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life-echo/api/app/agents/image_prompt/orchestrator.py
2026-03-19 10:43:34 +08:00

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"""
ImagePromptOrchestrator图片提示词生成编排器。
根据调用方(封面/正文)选择 build_prompt 或 build_cover_prompt
统一异常处理和回退;内部委托 PromptGenerationAgent。
"""
from __future__ import annotations
from typing import Any, Optional
from app.features.memoir.memoir_images.settings import MemoirImageSettings
from app.agents.image_prompt.prompt_agent import PromptGenerationAgent
class ImagePromptOrchestrator:
"""
图片提示词编排器。
区分封面 vs 正文配图,统一调用 PromptGenerationAgent
异常与回退由 PromptGenerationAgent底层 MemoirImagePromptService处理。
"""
def __init__(self, llm: Optional[Any], settings: MemoirImageSettings) -> None:
self._agent = PromptGenerationAgent(llm=llm, settings=settings)
def build_prompt(
self,
chapter_title: str,
chapter_category: str,
description: str,
context_excerpt: str,
) -> dict[str, str]:
"""
生成正文配图的 prompt。
委托 PromptGenerationAgent已含 LLM 调用失败时的 fallback 逻辑。
"""
return self._agent.build_prompt(
chapter_title=chapter_title,
chapter_category=chapter_category,
description=description,
context_excerpt=context_excerpt,
)
def build_cover_prompt(
self,
chapter_title: str,
chapter_category: str,
context_excerpt: str,
) -> dict[str, str]:
"""
生成章节封面的 prompt。
委托 PromptGenerationAgent已含 LLM 调用失败时的 fallback 逻辑。
"""
return self._agent.build_cover_prompt(
chapter_title=chapter_title,
chapter_category=chapter_category,
context_excerpt=context_excerpt,
)