1574 lines
47 KiB
Python
1574 lines
47 KiB
Python
"""Story business logic service."""
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import asyncio
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from dataclasses import dataclass
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from typing import Literal
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from fastapi import HTTPException
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from sqlalchemy import desc, select
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy.orm import joinedload
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from app.core.logging import get_logger
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from app.db.models import ChildProfile, Story, StoryUniverse
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from app.schemas.story_schemas import (
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AchievementItem,
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FullStoryResponse,
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GenerateRequest,
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GenerationRequest,
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GenerationResponse,
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StorybookPageResponse,
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StorybookRequest,
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StorybookResponse,
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)
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from app.services.adapters.storybook.primary import Storybook
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from app.services.adapters.text.models import StoryOutput
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from app.services.audio_storage import (
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audio_cache_exists,
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read_audio_cache,
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write_story_audio_cache,
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)
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from app.services.generation_jobs import (
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create_generation_job,
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finish_generation_job,
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record_generation_event,
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)
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from app.services.memory_service import build_enhanced_memory_context
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from app.services.provider_router import (
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generate_image,
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generate_story_content,
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generate_storybook,
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)
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from app.services.story_status import (
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StoryAssetStatus,
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sync_story_status,
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)
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from app.tasks.achievements import extract_story_achievements
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logger = get_logger(__name__)
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AssetCompletionKind = Literal["cover_image", "storybook_images", "audio"]
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@dataclass(frozen=True)
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class AssetCompletionResult:
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"""Service-level result for a generated asset completion attempt."""
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asset: AssetCompletionKind
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status: StoryAssetStatus
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value: str | bytes | None = None
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error: str | None = None
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blocks_main_result: bool = False
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@property
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def succeeded(self) -> bool:
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"""Whether the asset reached a usable ready state."""
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return self.status == StoryAssetStatus.READY and self.error is None
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async def _record_job_event_if_present(
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db: AsyncSession,
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*,
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job,
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event_type: str,
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status: str,
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story_id: int | None = None,
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message: str | None = None,
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metadata: dict | None = None,
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) -> None:
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"""Append a workflow event when the caller is running under a tracked job."""
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if job is None:
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return
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await record_generation_event(
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db,
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job=job,
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story_id=story_id,
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event_type=event_type,
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status=status,
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message=message,
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metadata=metadata,
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)
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def _asset_result_metadata(result: AssetCompletionResult) -> dict:
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"""Build JSON-safe metadata for asset workflow events."""
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return {
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"asset": result.asset,
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"status": result.status.value,
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"error": result.error,
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"blocks_main_result": result.blocks_main_result,
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}
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def _build_storybook_error_message(
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*,
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cover_failed: bool,
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failed_pages: list[int],
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) -> str | None:
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"""Summarize storybook image generation errors for the latest attempt."""
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parts: list[str] = []
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if cover_failed:
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parts.append("封面生成失败")
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if failed_pages:
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pages = "、".join(str(page) for page in sorted(failed_pages))
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parts.append(f"第 {pages} 页插图生成失败")
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return "；".join(parts) if parts else None
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def _resolve_storybook_image_status(
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*,
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generate_images: bool,
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cover_prompt: str | None,
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cover_url: str | None,
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pages_data: list[dict],
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) -> StoryAssetStatus:
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"""Resolve the persisted image status for a storybook."""
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if not generate_images:
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return StoryAssetStatus.NOT_REQUESTED
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expected_assets = 0
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ready_assets = 0
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if cover_prompt or cover_url:
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expected_assets += 1
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if cover_url:
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ready_assets += 1
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for page in pages_data:
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if not page.get("image_prompt") and not page.get("image_url"):
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continue
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expected_assets += 1
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if page.get("image_url"):
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ready_assets += 1
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if expected_assets == 0:
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return StoryAssetStatus.NOT_REQUESTED
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if ready_assets == expected_assets:
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return StoryAssetStatus.READY
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return StoryAssetStatus.FAILED
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async def _prepare_generation_context(
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*,
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profile_id: str | None,
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universe_id: str | None,
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user_id: str,
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db: AsyncSession,
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job=None,
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) -> tuple[str | None, str | None, str]:
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"""Validate ownership and build the shared generation context."""
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resolved_profile_id, resolved_universe_id = await validate_profile_and_universe(
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profile_id, universe_id, user_id, db
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)
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memory_context = await build_enhanced_memory_context(
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resolved_profile_id,
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resolved_universe_id,
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db,
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)
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await _record_job_event_if_present(
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db,
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job=job,
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event_type="context_prepared",
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status="succeeded",
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message="Profile, universe, and memory context were prepared.",
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metadata={
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"profile_id": resolved_profile_id,
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"universe_id": resolved_universe_id,
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"has_memory_context": bool(memory_context),
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},
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)
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return resolved_profile_id, resolved_universe_id, memory_context
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def _trigger_story_postprocessing(story: Story) -> None:
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"""Trigger non-blocking post-processing for a persisted story."""
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if story.universe_id:
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extract_story_achievements.delay(story.id, story.universe_id)
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async def _record_postprocessing_event_if_needed(
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db: AsyncSession,
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*,
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job,
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story: Story,
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) -> None:
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if not story.universe_id:
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return
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await record_generation_event(
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db,
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job=job,
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story_id=story.id,
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event_type="postprocessing_queued",
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status="queued",
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message="Achievement extraction queued after the main story record was saved.",
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metadata={"universe_id": story.universe_id},
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)
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async def _persist_text_story_result(
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*,
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result: StoryOutput,
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user_id: str,
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profile_id: str | None,
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universe_id: str | None,
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db: AsyncSession,
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job=None,
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) -> Story:
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"""Persist generated text content as the unified story record."""
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story = Story(
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user_id=user_id,
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child_profile_id=profile_id,
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universe_id=universe_id,
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title=result.title,
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story_text=result.story_text,
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cover_prompt=result.cover_prompt_suggestion,
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mode=result.mode,
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)
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sync_story_status(
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story,
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image_status=StoryAssetStatus.NOT_REQUESTED,
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audio_status=StoryAssetStatus.NOT_REQUESTED,
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last_error=None,
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)
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db.add(story)
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await db.commit()
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await db.refresh(story)
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_trigger_story_postprocessing(story)
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await _record_job_event_if_present(
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db,
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job=job,
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story_id=story.id,
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event_type="story_saved",
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status="succeeded",
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message="Readable story record was saved.",
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metadata={
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"mode": story.mode,
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"generation_status": story.generation_status,
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"image_status": story.image_status,
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"audio_status": story.audio_status,
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},
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)
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return story
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def _storybook_pages_to_data(storybook: Storybook) -> list[dict]:
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"""Convert generated storybook pages to the persisted JSON shape."""
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return [
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{
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"page_number": page.page_number,
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"text": page.text,
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"image_prompt": page.image_prompt,
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"image_url": page.image_url,
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}
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for page in storybook.pages
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]
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def _storybook_pages_to_response(pages_data: list[dict]) -> list[StorybookPageResponse]:
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"""Convert persisted storybook page JSON to API response models."""
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return [
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StorybookPageResponse(
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page_number=page["page_number"],
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text=page["text"],
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image_prompt=page["image_prompt"],
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image_url=page.get("image_url"),
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)
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for page in pages_data
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]
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async def _generate_storybook_image_assets(
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storybook: Storybook,
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db: AsyncSession,
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*,
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user_id: str,
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job=None,
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) -> tuple[str | None, bool, list[int]]:
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"""Generate storybook cover and page images before persistence."""
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final_cover_url = storybook.cover_url
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cover_failed = False
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failed_pages: list[int] = []
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completed_pages: list[int] = []
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attempted_cover = bool(storybook.cover_prompt and not storybook.cover_url)
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attempted_pages = [
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page.page_number
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for page in storybook.pages
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if page.image_prompt and not page.image_url
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]
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logger.info("storybook_parallel_generation_start", page_count=len(storybook.pages))
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await _record_job_event_if_present(
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db,
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job=job,
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event_type="storybook_images_started",
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status="running",
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message="Storybook cover and page image generation started.",
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metadata={
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"attempted_cover": attempted_cover,
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"attempted_pages": attempted_pages,
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},
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)
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async def _gen_cover() -> str | None:
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nonlocal cover_failed
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if storybook.cover_prompt and not storybook.cover_url:
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try:
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return await generate_image(
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storybook.cover_prompt,
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db=db,
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user_id=user_id,
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generation_job=job,
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)
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except Exception as exc:
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cover_failed = True
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logger.warning("cover_gen_failed", error=str(exc))
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return storybook.cover_url
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async def _gen_page(page) -> None:
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if not page.image_prompt or page.image_url:
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return
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try:
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page.image_url = await generate_image(
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page.image_prompt,
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db=db,
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user_id=user_id,
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generation_job=job,
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)
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completed_pages.append(page.page_number)
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except Exception as exc:
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failed_pages.append(page.page_number)
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||
logger.warning("page_gen_failed", page=page.page_number, error=str(exc))
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results = await asyncio.gather(
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_gen_cover(),
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*(_gen_page(page) for page in storybook.pages),
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||
return_exceptions=True,
|
||
)
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||
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cover_result = results[0]
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if isinstance(cover_result, str):
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final_cover_url = cover_result
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||
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logger.info("storybook_parallel_generation_complete")
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if attempted_cover:
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await _record_job_event_if_present(
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db,
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job=job,
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event_type=(
|
||
"storybook_cover_image_failed"
|
||
if cover_failed
|
||
else "storybook_cover_image_succeeded"
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||
),
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||
status="failed" if cover_failed else "succeeded",
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||
message=(
|
||
"Storybook cover image generation failed."
|
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if cover_failed
|
||
else "Storybook cover image was generated."
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||
),
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metadata={"asset": "image", "scope": "cover"},
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||
)
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for page_number in sorted(completed_pages):
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await _record_job_event_if_present(
|
||
db,
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||
job=job,
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||
event_type="storybook_page_image_succeeded",
|
||
status="succeeded",
|
||
message="Storybook page image was generated.",
|
||
metadata={"asset": "image", "scope": "page", "page_number": page_number},
|
||
)
|
||
|
||
for page_number in sorted(failed_pages):
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
event_type="storybook_page_image_failed",
|
||
status="failed",
|
||
message="Storybook page image generation failed.",
|
||
metadata={"asset": "image", "scope": "page", "page_number": page_number},
|
||
)
|
||
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
event_type="storybook_images_completed",
|
||
status="failed" if cover_failed or failed_pages else "succeeded",
|
||
message="Storybook image generation finished.",
|
||
metadata={
|
||
"asset": "image",
|
||
"attempted_cover": attempted_cover,
|
||
"completed_pages": sorted(completed_pages),
|
||
"failed_pages": sorted(failed_pages),
|
||
},
|
||
)
|
||
return final_cover_url, cover_failed, failed_pages
|
||
|
||
|
||
async def _persist_storybook_result(
|
||
*,
|
||
storybook: Storybook,
|
||
user_id: str,
|
||
profile_id: str | None,
|
||
universe_id: str | None,
|
||
final_cover_url: str | None,
|
||
generate_images: bool,
|
||
cover_failed: bool,
|
||
failed_pages: list[int],
|
||
db: AsyncSession,
|
||
job=None,
|
||
) -> tuple[Story, list[dict]]:
|
||
"""Persist generated storybook content as the unified story record."""
|
||
|
||
pages_data = _storybook_pages_to_data(storybook)
|
||
story = Story(
|
||
user_id=user_id,
|
||
child_profile_id=profile_id,
|
||
universe_id=universe_id,
|
||
title=storybook.title,
|
||
mode="storybook",
|
||
pages=pages_data,
|
||
story_text=None,
|
||
cover_prompt=storybook.cover_prompt,
|
||
image_url=final_cover_url,
|
||
)
|
||
sync_story_status(
|
||
story,
|
||
image_status=_resolve_storybook_image_status(
|
||
generate_images=generate_images,
|
||
cover_prompt=storybook.cover_prompt,
|
||
cover_url=final_cover_url,
|
||
pages_data=pages_data,
|
||
),
|
||
audio_status=StoryAssetStatus.NOT_REQUESTED,
|
||
last_error=_build_storybook_error_message(
|
||
cover_failed=cover_failed,
|
||
failed_pages=failed_pages,
|
||
),
|
||
)
|
||
db.add(story)
|
||
await db.commit()
|
||
await db.refresh(story)
|
||
_trigger_story_postprocessing(story)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="story_saved",
|
||
status="succeeded",
|
||
message="Storybook record was saved.",
|
||
metadata={
|
||
"mode": story.mode,
|
||
"page_count": len(pages_data),
|
||
"generation_status": story.generation_status,
|
||
"image_status": story.image_status,
|
||
"audio_status": story.audio_status,
|
||
},
|
||
)
|
||
return story, pages_data
|
||
|
||
|
||
async def _complete_cover_image_asset(
|
||
story: Story,
|
||
db: AsyncSession,
|
||
*,
|
||
raise_on_failure: bool = False,
|
||
last_error_prefix: str | None = None,
|
||
log_event: str = "cover_asset_generation_failed",
|
||
job=None,
|
||
) -> AssetCompletionResult:
|
||
"""Generate or retry a text story cover through one asset workflow."""
|
||
|
||
if not story.cover_prompt:
|
||
raise HTTPException(status_code=400, detail="Story has no cover prompt")
|
||
|
||
sync_story_status(story, image_status=StoryAssetStatus.GENERATING)
|
||
await db.commit()
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="cover_image_started",
|
||
status="running",
|
||
message="Cover image generation started.",
|
||
metadata={"asset": "image", "cover_prompt_present": True},
|
||
)
|
||
|
||
try:
|
||
image_url = await generate_image(
|
||
story.cover_prompt,
|
||
db=db,
|
||
user_id=story.user_id,
|
||
generation_job=job,
|
||
story_id=story.id,
|
||
)
|
||
story.image_url = image_url
|
||
sync_story_status(story, image_status=StoryAssetStatus.READY)
|
||
await db.commit()
|
||
result = AssetCompletionResult(
|
||
asset="cover_image",
|
||
status=StoryAssetStatus.READY,
|
||
value=image_url,
|
||
blocks_main_result=raise_on_failure,
|
||
)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="cover_image_succeeded",
|
||
status="succeeded",
|
||
message="Cover image was generated.",
|
||
metadata=_asset_result_metadata(result),
|
||
)
|
||
return result
|
||
except Exception as exc:
|
||
provider_error = str(exc)
|
||
last_error = (
|
||
f"{last_error_prefix}: {provider_error}"
|
||
if last_error_prefix
|
||
else provider_error
|
||
)
|
||
sync_story_status(
|
||
story,
|
||
image_status=StoryAssetStatus.FAILED,
|
||
last_error=last_error,
|
||
)
|
||
await db.commit()
|
||
logger.warning(log_event, story_id=story.id, error=provider_error)
|
||
|
||
result = AssetCompletionResult(
|
||
asset="cover_image",
|
||
status=StoryAssetStatus.FAILED,
|
||
error=provider_error,
|
||
blocks_main_result=raise_on_failure,
|
||
)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="cover_image_failed",
|
||
status="failed",
|
||
message="Cover image generation failed.",
|
||
metadata=_asset_result_metadata(result),
|
||
)
|
||
if raise_on_failure:
|
||
raise HTTPException(
|
||
status_code=500,
|
||
detail=f"Image generation failed: {provider_error}",
|
||
) from exc
|
||
|
||
return result
|
||
|
||
|
||
def _get_storybook_pages_data(story: Story) -> list[dict]:
|
||
"""Return mutable storybook page data from the persisted JSON field."""
|
||
|
||
return [dict(page) for page in story.pages or [] if isinstance(page, dict)]
|
||
|
||
|
||
async def _complete_storybook_image_assets(
|
||
story: Story,
|
||
db: AsyncSession,
|
||
*,
|
||
job=None,
|
||
) -> AssetCompletionResult:
|
||
"""Complete missing cover/page images for a persisted storybook."""
|
||
|
||
pages_data = _get_storybook_pages_data(story)
|
||
has_image_prompt = bool(story.cover_prompt) or any(
|
||
page.get("image_prompt") for page in pages_data
|
||
)
|
||
if not has_image_prompt:
|
||
raise HTTPException(status_code=400, detail="Storybook has no image prompts")
|
||
|
||
sync_story_status(story, image_status=StoryAssetStatus.GENERATING)
|
||
await db.commit()
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="storybook_images_started",
|
||
status="running",
|
||
message="Storybook missing image completion started.",
|
||
metadata={"asset": "image"},
|
||
)
|
||
|
||
cover_failed = False
|
||
failed_pages: list[int] = []
|
||
completed_pages: list[int] = []
|
||
|
||
if story.cover_prompt and not story.image_url:
|
||
try:
|
||
story.image_url = await generate_image(
|
||
story.cover_prompt,
|
||
db=db,
|
||
user_id=story.user_id,
|
||
generation_job=job,
|
||
story_id=story.id,
|
||
)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="storybook_cover_image_succeeded",
|
||
status="succeeded",
|
||
message="Storybook cover image was generated.",
|
||
metadata={"asset": "image", "scope": "cover"},
|
||
)
|
||
except Exception as exc:
|
||
cover_failed = True
|
||
logger.warning(
|
||
"storybook_cover_asset_completion_failed",
|
||
story_id=story.id,
|
||
error=str(exc),
|
||
)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="storybook_cover_image_failed",
|
||
status="failed",
|
||
message="Storybook cover image generation failed.",
|
||
metadata={"asset": "image", "scope": "cover", "error": str(exc)},
|
||
)
|
||
|
||
for page in pages_data:
|
||
if not page.get("image_prompt") or page.get("image_url"):
|
||
continue
|
||
|
||
try:
|
||
page["image_url"] = await generate_image(
|
||
page["image_prompt"],
|
||
db=db,
|
||
user_id=story.user_id,
|
||
generation_job=job,
|
||
story_id=story.id,
|
||
)
|
||
page_number = page.get("page_number")
|
||
if isinstance(page_number, int):
|
||
completed_pages.append(page_number)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="storybook_page_image_succeeded",
|
||
status="succeeded",
|
||
message="Storybook page image was generated.",
|
||
metadata={"asset": "image", "scope": "page", "page_number": page_number},
|
||
)
|
||
except Exception as exc:
|
||
page_number = page.get("page_number")
|
||
if isinstance(page_number, int):
|
||
failed_pages.append(page_number)
|
||
logger.warning(
|
||
"storybook_page_asset_completion_failed",
|
||
story_id=story.id,
|
||
page=page_number,
|
||
error=str(exc),
|
||
)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="storybook_page_image_failed",
|
||
status="failed",
|
||
message="Storybook page image generation failed.",
|
||
metadata={
|
||
"asset": "image",
|
||
"scope": "page",
|
||
"page_number": page_number,
|
||
"error": str(exc),
|
||
},
|
||
)
|
||
|
||
story.pages = pages_data
|
||
error_message = _build_storybook_error_message(
|
||
cover_failed=cover_failed,
|
||
failed_pages=failed_pages,
|
||
)
|
||
image_status = _resolve_storybook_image_status(
|
||
generate_images=True,
|
||
cover_prompt=story.cover_prompt,
|
||
cover_url=story.image_url,
|
||
pages_data=pages_data,
|
||
)
|
||
sync_story_status(
|
||
story,
|
||
image_status=image_status,
|
||
last_error=error_message,
|
||
)
|
||
await db.commit()
|
||
result = AssetCompletionResult(
|
||
asset="storybook_images",
|
||
status=image_status,
|
||
value=story.image_url,
|
||
error=error_message,
|
||
)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="storybook_images_completed",
|
||
status="failed" if error_message else "succeeded",
|
||
message="Storybook image completion finished.",
|
||
metadata={
|
||
**_asset_result_metadata(result),
|
||
"completed_pages": sorted(completed_pages),
|
||
"failed_pages": sorted(failed_pages),
|
||
},
|
||
)
|
||
return result
|
||
|
||
|
||
async def _read_cached_audio_asset(story: Story, db: AsyncSession) -> bytes | None:
|
||
"""Read cached audio or repair stale audio cache metadata."""
|
||
|
||
if story.audio_path and audio_cache_exists(story.audio_path):
|
||
if story.audio_status != StoryAssetStatus.READY.value:
|
||
sync_story_status(story, audio_status=StoryAssetStatus.READY)
|
||
await db.commit()
|
||
return read_audio_cache(story.audio_path)
|
||
|
||
if story.audio_path and not audio_cache_exists(story.audio_path):
|
||
logger.warning(
|
||
"story_audio_cache_missing",
|
||
story_id=story.id,
|
||
audio_path=story.audio_path,
|
||
)
|
||
story.audio_path = None
|
||
if story.audio_status == StoryAssetStatus.READY.value:
|
||
sync_story_status(story, audio_status=StoryAssetStatus.NOT_REQUESTED)
|
||
await db.commit()
|
||
|
||
return None
|
||
|
||
|
||
async def _complete_audio_asset(
|
||
story: Story,
|
||
db: AsyncSession,
|
||
*,
|
||
raise_on_failure: bool = True,
|
||
job=None,
|
||
) -> AssetCompletionResult:
|
||
"""Complete TTS audio generation through one asset workflow."""
|
||
|
||
if not story.story_text:
|
||
raise HTTPException(status_code=400, detail="Story has no text")
|
||
|
||
cached_audio = await _read_cached_audio_asset(story, db)
|
||
if cached_audio is not None:
|
||
result = AssetCompletionResult(
|
||
asset="audio",
|
||
status=StoryAssetStatus.READY,
|
||
value=cached_audio,
|
||
blocks_main_result=raise_on_failure,
|
||
)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="audio_cache_hit",
|
||
status="succeeded",
|
||
message="Cached story audio was reused.",
|
||
metadata=_asset_result_metadata(result),
|
||
)
|
||
return result
|
||
|
||
from app.services.provider_router import text_to_speech
|
||
|
||
sync_story_status(story, audio_status=StoryAssetStatus.GENERATING)
|
||
await db.commit()
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="audio_started",
|
||
status="running",
|
||
message="Story audio generation started.",
|
||
metadata={"asset": "audio"},
|
||
)
|
||
|
||
try:
|
||
audio_data = await text_to_speech(
|
||
story.story_text,
|
||
db=db,
|
||
user_id=story.user_id,
|
||
generation_job=job,
|
||
story_id=story.id,
|
||
)
|
||
story.audio_path = write_story_audio_cache(story.id, audio_data)
|
||
sync_story_status(
|
||
story,
|
||
audio_status=StoryAssetStatus.READY,
|
||
)
|
||
await db.commit()
|
||
result = AssetCompletionResult(
|
||
asset="audio",
|
||
status=StoryAssetStatus.READY,
|
||
value=audio_data,
|
||
blocks_main_result=raise_on_failure,
|
||
)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="audio_succeeded",
|
||
status="succeeded",
|
||
message="Story audio was generated and cached.",
|
||
metadata=_asset_result_metadata(result),
|
||
)
|
||
return result
|
||
except Exception as exc:
|
||
provider_error = str(exc)
|
||
story.audio_path = None
|
||
sync_story_status(
|
||
story,
|
||
audio_status=StoryAssetStatus.FAILED,
|
||
last_error=provider_error,
|
||
)
|
||
await db.commit()
|
||
logger.error("audio_generation_failed", story_id=story.id, error=provider_error)
|
||
|
||
result = AssetCompletionResult(
|
||
asset="audio",
|
||
status=StoryAssetStatus.FAILED,
|
||
error=provider_error,
|
||
blocks_main_result=raise_on_failure,
|
||
)
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="audio_failed",
|
||
status="failed",
|
||
message="Story audio generation failed.",
|
||
metadata=_asset_result_metadata(result),
|
||
)
|
||
if raise_on_failure:
|
||
raise HTTPException(
|
||
status_code=500,
|
||
detail=f"Audio generation failed: {provider_error}",
|
||
) from exc
|
||
|
||
return result
|
||
|
||
|
||
async def validate_profile_and_universe(
|
||
profile_id: str | None,
|
||
universe_id: str | None,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
) -> tuple[str | None, str | None]:
|
||
"""Validate child profile and universe ownership/relationship."""
|
||
if not profile_id and not universe_id:
|
||
return None, None
|
||
|
||
if profile_id:
|
||
result = await db.execute(
|
||
select(ChildProfile).where(
|
||
ChildProfile.id == profile_id,
|
||
ChildProfile.user_id == user_id,
|
||
)
|
||
)
|
||
profile = result.scalar_one_or_none()
|
||
if not profile:
|
||
raise HTTPException(status_code=404, detail="孩子档案不存在")
|
||
|
||
if universe_id:
|
||
result = await db.execute(
|
||
select(StoryUniverse)
|
||
.join(ChildProfile, StoryUniverse.child_profile_id == ChildProfile.id)
|
||
.where(
|
||
StoryUniverse.id == universe_id,
|
||
ChildProfile.user_id == user_id,
|
||
)
|
||
)
|
||
universe = result.scalar_one_or_none()
|
||
if not universe:
|
||
raise HTTPException(status_code=404, detail="故事宇宙不存在")
|
||
if profile_id and universe.child_profile_id != profile_id:
|
||
raise HTTPException(status_code=400, detail="故事宇宙与孩子档案不匹配")
|
||
if not profile_id:
|
||
profile_id = universe.child_profile_id
|
||
|
||
return profile_id, universe_id
|
||
|
||
|
||
async def generate_and_save_story(
|
||
request: GenerateRequest,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
*,
|
||
job=None,
|
||
) -> Story:
|
||
"""Generate generic story content and save to DB."""
|
||
profile_id, universe_id, memory_context = await _prepare_generation_context(
|
||
profile_id=request.child_profile_id,
|
||
universe_id=request.universe_id,
|
||
user_id=user_id,
|
||
db=db,
|
||
job=job,
|
||
)
|
||
|
||
try:
|
||
result = await generate_story_content(
|
||
input_type=request.type,
|
||
data=request.data,
|
||
education_theme=request.education_theme,
|
||
memory_context=memory_context,
|
||
db=db,
|
||
user_id=user_id,
|
||
generation_job=job,
|
||
)
|
||
except Exception as exc:
|
||
raise HTTPException(
|
||
status_code=502,
|
||
detail="Story generation failed, please try again.",
|
||
) from exc
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
event_type="narrative_generated",
|
||
status="succeeded",
|
||
message="Story narrative was generated.",
|
||
metadata={"mode": result.mode, "title": result.title},
|
||
)
|
||
|
||
return await _persist_text_story_result(
|
||
result=result,
|
||
user_id=user_id,
|
||
profile_id=profile_id,
|
||
universe_id=universe_id,
|
||
db=db,
|
||
job=job,
|
||
)
|
||
|
||
|
||
async def generate_full_story_service(
|
||
request: GenerateRequest,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
*,
|
||
job=None,
|
||
) -> FullStoryResponse:
|
||
"""Generate story with parallel image generation."""
|
||
story = await generate_and_save_story(request, user_id, db, job=job)
|
||
image_url: str | None = None
|
||
errors: dict[str, str | None] = {}
|
||
|
||
if story.cover_prompt:
|
||
image_result = await _complete_cover_image_asset(
|
||
story,
|
||
db,
|
||
log_event="image_generation_failed",
|
||
job=job,
|
||
)
|
||
if image_result.succeeded and isinstance(image_result.value, str):
|
||
image_url = image_result.value
|
||
if image_result.error:
|
||
errors["image"] = image_result.error
|
||
|
||
return FullStoryResponse(
|
||
id=story.id,
|
||
title=story.title,
|
||
story_text=story.story_text,
|
||
cover_prompt=story.cover_prompt,
|
||
image_url=image_url,
|
||
audio_ready=False,
|
||
mode=story.mode,
|
||
errors=errors,
|
||
child_profile_id=story.child_profile_id,
|
||
universe_id=story.universe_id,
|
||
generation_status=story.generation_status,
|
||
text_status=story.text_status,
|
||
image_status=story.image_status,
|
||
audio_status=story.audio_status,
|
||
last_error=story.last_error,
|
||
retryable_assets=story.retryable_assets,
|
||
)
|
||
|
||
|
||
async def generate_storybook_service(
|
||
request: StorybookRequest,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
*,
|
||
job=None,
|
||
) -> StorybookResponse:
|
||
"""Generate storybook with parallel image generation for pages."""
|
||
profile_id, universe_id, memory_context = await _prepare_generation_context(
|
||
profile_id=request.child_profile_id,
|
||
universe_id=request.universe_id,
|
||
user_id=user_id,
|
||
db=db,
|
||
job=job,
|
||
)
|
||
|
||
logger.info(
|
||
"storybook_request",
|
||
user_id=user_id,
|
||
keywords=request.keywords,
|
||
page_count=request.page_count,
|
||
profile_id=profile_id,
|
||
universe_id=universe_id,
|
||
)
|
||
|
||
try:
|
||
storybook = await generate_storybook(
|
||
keywords=request.keywords,
|
||
page_count=request.page_count,
|
||
education_theme=request.education_theme,
|
||
memory_context=memory_context,
|
||
db=db,
|
||
user_id=user_id,
|
||
generation_job=job,
|
||
)
|
||
except Exception as e:
|
||
logger.error("storybook_generation_failed", error=str(e))
|
||
raise HTTPException(status_code=500, detail=f"故事书生成失败: {e}")
|
||
await _record_job_event_if_present(
|
||
db,
|
||
job=job,
|
||
event_type="narrative_generated",
|
||
status="succeeded",
|
||
message="Storybook narrative and page plan were generated.",
|
||
metadata={
|
||
"mode": "storybook",
|
||
"title": storybook.title,
|
||
"page_count": len(storybook.pages),
|
||
},
|
||
)
|
||
|
||
final_cover_url = storybook.cover_url
|
||
cover_failed = False
|
||
failed_pages: list[int] = []
|
||
|
||
if request.generate_images:
|
||
(
|
||
final_cover_url,
|
||
cover_failed,
|
||
failed_pages,
|
||
) = await _generate_storybook_image_assets(
|
||
storybook,
|
||
db,
|
||
user_id=user_id,
|
||
job=job,
|
||
)
|
||
|
||
story, pages_data = await _persist_storybook_result(
|
||
storybook=storybook,
|
||
user_id=user_id,
|
||
profile_id=profile_id,
|
||
universe_id=universe_id,
|
||
final_cover_url=final_cover_url,
|
||
generate_images=request.generate_images,
|
||
cover_failed=cover_failed,
|
||
failed_pages=failed_pages,
|
||
db=db,
|
||
job=job,
|
||
)
|
||
|
||
response_pages = _storybook_pages_to_response(pages_data)
|
||
|
||
return StorybookResponse(
|
||
id=story.id,
|
||
title=storybook.title,
|
||
main_character=storybook.main_character,
|
||
art_style=storybook.art_style,
|
||
pages=response_pages,
|
||
cover_prompt=storybook.cover_prompt,
|
||
cover_url=final_cover_url,
|
||
generation_status=story.generation_status,
|
||
text_status=story.text_status,
|
||
image_status=story.image_status,
|
||
audio_status=story.audio_status,
|
||
last_error=story.last_error,
|
||
retryable_assets=story.retryable_assets,
|
||
)
|
||
|
||
|
||
async def generate_generation_service(
|
||
request: GenerationRequest,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
) -> GenerationResponse:
|
||
"""Unified generation workflow entry point for stories and storybooks."""
|
||
|
||
job = await create_generation_job(
|
||
db,
|
||
user_id=user_id,
|
||
output_mode=request.output_mode,
|
||
input_type=request.type,
|
||
request_payload=request.model_dump(mode="json"),
|
||
)
|
||
|
||
try:
|
||
response = await _generate_generation_service_with_job(request, user_id, db, job=job)
|
||
except HTTPException as exc:
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=None,
|
||
status="failed",
|
||
current_step="generation_failed",
|
||
error_message=str(exc.detail),
|
||
message="Generation failed before a durable story result was available.",
|
||
)
|
||
raise
|
||
except Exception as exc:
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=None,
|
||
status="failed",
|
||
current_step="generation_failed",
|
||
error_message=str(exc),
|
||
message="Generation failed before a durable story result was available.",
|
||
)
|
||
raise
|
||
|
||
return response
|
||
|
||
|
||
async def _generate_generation_service_with_job(
|
||
request: GenerationRequest,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
*,
|
||
job,
|
||
) -> GenerationResponse:
|
||
"""Run the unified generation workflow after the tracking job has been created."""
|
||
|
||
if request.output_mode == "storybook":
|
||
storybook = await generate_storybook_service(
|
||
StorybookRequest(
|
||
keywords=request.data,
|
||
page_count=request.page_count,
|
||
education_theme=request.education_theme,
|
||
generate_images=request.generate_images,
|
||
child_profile_id=request.child_profile_id,
|
||
universe_id=request.universe_id,
|
||
),
|
||
user_id,
|
||
db,
|
||
job=job,
|
||
)
|
||
if storybook.id is None:
|
||
raise HTTPException(status_code=500, detail="Storybook generation did not persist.")
|
||
|
||
saved_story = await get_story_detail(storybook.id, user_id, db)
|
||
await _record_postprocessing_event_if_needed(db, job=job, story=saved_story)
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=saved_story,
|
||
current_step="generation_completed",
|
||
message="Storybook generation completed with persisted text and current asset states.",
|
||
)
|
||
return GenerationResponse(
|
||
id=storybook.id,
|
||
generation_job_id=job.id,
|
||
title=storybook.title,
|
||
mode="storybook",
|
||
pages=storybook.pages,
|
||
cover_prompt=storybook.cover_prompt,
|
||
image_url=storybook.cover_url,
|
||
cover_url=storybook.cover_url,
|
||
main_character=storybook.main_character,
|
||
art_style=storybook.art_style,
|
||
generation_status=storybook.generation_status,
|
||
text_status=saved_story.text_status,
|
||
image_status=storybook.image_status,
|
||
audio_status=storybook.audio_status,
|
||
last_error=storybook.last_error,
|
||
child_profile_id=saved_story.child_profile_id,
|
||
universe_id=saved_story.universe_id,
|
||
retryable_assets=saved_story.retryable_assets,
|
||
)
|
||
|
||
generate_request = GenerateRequest(
|
||
type=request.type,
|
||
data=request.data,
|
||
education_theme=request.education_theme,
|
||
child_profile_id=request.child_profile_id,
|
||
universe_id=request.universe_id,
|
||
)
|
||
|
||
if request.generate_images:
|
||
story = await generate_full_story_service(generate_request, user_id, db, job=job)
|
||
saved_story = await get_story_detail(story.id, user_id, db)
|
||
await _record_postprocessing_event_if_needed(db, job=job, story=saved_story)
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=saved_story,
|
||
current_step="generation_completed",
|
||
message="Story generation completed with persisted text and current asset states.",
|
||
)
|
||
return GenerationResponse(
|
||
id=story.id,
|
||
generation_job_id=job.id,
|
||
title=story.title,
|
||
mode=story.mode,
|
||
story_text=story.story_text,
|
||
cover_prompt=story.cover_prompt,
|
||
image_url=story.image_url,
|
||
cover_url=story.image_url,
|
||
audio_ready=story.audio_ready,
|
||
errors=story.errors,
|
||
generation_status=story.generation_status,
|
||
text_status=saved_story.text_status,
|
||
image_status=story.image_status,
|
||
audio_status=story.audio_status,
|
||
last_error=story.last_error,
|
||
child_profile_id=story.child_profile_id,
|
||
universe_id=story.universe_id,
|
||
retryable_assets=saved_story.retryable_assets,
|
||
)
|
||
|
||
story = await generate_and_save_story(generate_request, user_id, db, job=job)
|
||
await _record_postprocessing_event_if_needed(db, job=job, story=story)
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=story,
|
||
current_step="generation_completed",
|
||
message="Story generation completed with a persisted readable narrative.",
|
||
)
|
||
return GenerationResponse(
|
||
id=story.id,
|
||
generation_job_id=job.id,
|
||
title=story.title,
|
||
mode=story.mode,
|
||
story_text=story.story_text,
|
||
cover_prompt=story.cover_prompt,
|
||
image_url=story.image_url,
|
||
cover_url=story.image_url,
|
||
generation_status=story.generation_status,
|
||
text_status=story.text_status,
|
||
image_status=story.image_status,
|
||
audio_status=story.audio_status,
|
||
last_error=story.last_error,
|
||
child_profile_id=story.child_profile_id,
|
||
universe_id=story.universe_id,
|
||
retryable_assets=story.retryable_assets,
|
||
)
|
||
|
||
|
||
async def list_stories(
|
||
user_id: str,
|
||
limit: int,
|
||
offset: int,
|
||
db: AsyncSession,
|
||
) -> list[Story]:
|
||
"""List stories for user."""
|
||
result = await db.execute(
|
||
select(Story)
|
||
.where(Story.user_id == user_id)
|
||
.order_by(desc(Story.created_at))
|
||
.offset(offset)
|
||
.limit(limit)
|
||
)
|
||
return result.scalars().all()
|
||
|
||
|
||
async def get_story_detail(
|
||
story_id: int,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
) -> Story:
|
||
"""Get story detail."""
|
||
result = await db.execute(
|
||
select(Story).where(Story.id == story_id, Story.user_id == user_id)
|
||
)
|
||
story = result.scalar_one_or_none()
|
||
if not story:
|
||
raise HTTPException(status_code=404, detail="Story not found")
|
||
return story
|
||
|
||
|
||
async def delete_story(
|
||
story_id: int,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
) -> None:
|
||
"""Delete a story."""
|
||
story = await get_story_detail(story_id, user_id, db)
|
||
await db.delete(story)
|
||
await db.commit()
|
||
|
||
|
||
async def create_story_from_result(
|
||
result: StoryOutput,
|
||
user_id: str,
|
||
profile_id: str | None,
|
||
universe_id: str | None,
|
||
db: AsyncSession,
|
||
) -> Story:
|
||
"""Save a generated story to DB (helper for stream endpoint)."""
|
||
return await _persist_text_story_result(
|
||
result=result,
|
||
user_id=user_id,
|
||
profile_id=profile_id,
|
||
universe_id=universe_id,
|
||
db=db,
|
||
)
|
||
|
||
|
||
async def _retry_cover_image_asset(story: Story, db: AsyncSession, *, job=None) -> None:
|
||
"""Retry cover generation for a text story."""
|
||
|
||
await _complete_cover_image_asset(
|
||
story,
|
||
db,
|
||
last_error_prefix="封面生成失败",
|
||
log_event="cover_asset_retry_failed",
|
||
job=job,
|
||
)
|
||
|
||
|
||
async def _retry_storybook_image_assets(
|
||
story: Story,
|
||
db: AsyncSession,
|
||
*,
|
||
job=None,
|
||
) -> None:
|
||
"""Retry missing storybook cover/page images."""
|
||
|
||
await _complete_storybook_image_assets(story, db, job=job)
|
||
|
||
|
||
async def _retry_audio_asset(story: Story, db: AsyncSession, *, job=None) -> None:
|
||
"""Retry audio generation while preserving persisted status on provider failure."""
|
||
|
||
await _complete_audio_asset(story, db, raise_on_failure=False, job=job)
|
||
|
||
|
||
async def retry_story_assets(
|
||
story_id: int,
|
||
user_id: str,
|
||
assets: list[str],
|
||
db: AsyncSession,
|
||
) -> Story:
|
||
"""Retry selected assets through one workflow-level endpoint."""
|
||
requested_assets = list(dict.fromkeys(assets))
|
||
job = await create_generation_job(
|
||
db,
|
||
user_id=user_id,
|
||
output_mode="asset_retry",
|
||
input_type=",".join(requested_assets),
|
||
request_payload={"story_id": story_id, "assets": requested_assets},
|
||
story_id=story_id,
|
||
)
|
||
story: Story | None = None
|
||
|
||
try:
|
||
story = await get_story_detail(story_id, user_id, db)
|
||
await record_generation_event(
|
||
db,
|
||
job=job,
|
||
story_id=story.id,
|
||
event_type="asset_retry_started",
|
||
status="running",
|
||
message="Asset retry started.",
|
||
metadata={"assets": requested_assets},
|
||
)
|
||
|
||
if "image" in requested_assets:
|
||
if story.mode == "storybook":
|
||
await _retry_storybook_image_assets(story, db, job=job)
|
||
else:
|
||
await _retry_cover_image_asset(story, db, job=job)
|
||
|
||
if "audio" in requested_assets:
|
||
await _retry_audio_asset(story, db, job=job)
|
||
|
||
story = await get_story_detail(story_id, user_id, db)
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=story,
|
||
current_step="asset_retry_completed",
|
||
message="Asset retry completed with persisted status updates.",
|
||
metadata={"assets": requested_assets},
|
||
)
|
||
return story
|
||
except HTTPException as exc:
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=story,
|
||
status="failed",
|
||
current_step="asset_retry_failed",
|
||
error_message=str(exc.detail),
|
||
message="Asset retry failed.",
|
||
metadata={"assets": requested_assets},
|
||
)
|
||
raise
|
||
except Exception as exc:
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=story,
|
||
status="failed",
|
||
current_step="asset_retry_failed",
|
||
error_message=str(exc),
|
||
message="Asset retry failed.",
|
||
metadata={"assets": requested_assets},
|
||
)
|
||
raise
|
||
|
||
|
||
async def generate_story_cover(
|
||
story_id: int,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
) -> str:
|
||
"""Generate cover image for an existing story."""
|
||
job = await create_generation_job(
|
||
db,
|
||
user_id=user_id,
|
||
output_mode="asset_generation",
|
||
input_type="image",
|
||
request_payload={"story_id": story_id, "assets": ["image"]},
|
||
story_id=story_id,
|
||
)
|
||
story: Story | None = None
|
||
|
||
try:
|
||
story = await get_story_detail(story_id, user_id, db)
|
||
image_result = await _complete_cover_image_asset(
|
||
story,
|
||
db,
|
||
raise_on_failure=True,
|
||
log_event="cover_generation_failed",
|
||
job=job,
|
||
)
|
||
story = await get_story_detail(story_id, user_id, db)
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=story,
|
||
current_step="asset_generation_completed",
|
||
message="Cover image generation completed.",
|
||
metadata={"assets": ["image"]},
|
||
)
|
||
if image_result.succeeded and isinstance(image_result.value, str):
|
||
return image_result.value
|
||
except HTTPException as exc:
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=story,
|
||
status="failed",
|
||
current_step="asset_generation_failed",
|
||
error_message=str(exc.detail),
|
||
message="Cover image generation failed.",
|
||
metadata={"assets": ["image"]},
|
||
)
|
||
raise
|
||
|
||
raise HTTPException(status_code=500, detail="Image generation failed")
|
||
|
||
|
||
async def generate_story_audio(
|
||
story_id: int,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
) -> bytes:
|
||
"""Generate audio for a story."""
|
||
job = await create_generation_job(
|
||
db,
|
||
user_id=user_id,
|
||
output_mode="asset_generation",
|
||
input_type="audio",
|
||
request_payload={"story_id": story_id, "assets": ["audio"]},
|
||
story_id=story_id,
|
||
)
|
||
story: Story | None = None
|
||
|
||
try:
|
||
story = await get_story_detail(story_id, user_id, db)
|
||
audio_result = await _complete_audio_asset(
|
||
story,
|
||
db,
|
||
raise_on_failure=True,
|
||
job=job,
|
||
)
|
||
story = await get_story_detail(story_id, user_id, db)
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=story,
|
||
current_step="asset_generation_completed",
|
||
message="Story audio generation completed.",
|
||
metadata={"assets": ["audio"]},
|
||
)
|
||
if audio_result.succeeded and isinstance(audio_result.value, bytes):
|
||
return audio_result.value
|
||
except HTTPException as exc:
|
||
await finish_generation_job(
|
||
db,
|
||
job=job,
|
||
story=story,
|
||
status="failed",
|
||
current_step="asset_generation_failed",
|
||
error_message=str(exc.detail),
|
||
message="Story audio generation failed.",
|
||
metadata={"assets": ["audio"]},
|
||
)
|
||
raise
|
||
|
||
raise HTTPException(status_code=500, detail="Audio generation failed")
|
||
|
||
|
||
async def get_story_achievements(
|
||
story_id: int,
|
||
user_id: str,
|
||
db: AsyncSession,
|
||
) -> list[AchievementItem]:
|
||
"""Get achievements unlocked by a specific story."""
|
||
result = await db.execute(
|
||
select(Story)
|
||
.options(joinedload(Story.story_universe))
|
||
.where(Story.id == story_id, Story.user_id == user_id)
|
||
)
|
||
story = result.scalar_one_or_none()
|
||
|
||
if not story:
|
||
raise HTTPException(status_code=404, detail="Story not found")
|
||
|
||
if not story.universe_id or not story.story_universe:
|
||
return []
|
||
|
||
universe = story.story_universe
|
||
if not universe.achievements:
|
||
return []
|
||
|
||
results = []
|
||
for ach in universe.achievements:
|
||
if isinstance(ach, dict) and ach.get("source_story_id") == story_id:
|
||
results.append(AchievementItem(
|
||
type=ach.get("type", "Unknown"),
|
||
description=ach.get("description", ""),
|
||
obtained_at=ach.get("obtained_at")
|
||
))
|
||
return results
|
||
|