Refactor SRP : decoupage de main.py (Brain) en routers et du SettingsComponent (web)
Brain : main.py (1496 l.) reduit a l'assemblage (~95 l.) ; un router par responsabilite (generation, chat, tables, imports, notebooks, settings, models), factories DI dans api/deps.py, DTOs chat + mapping anti-corruption separes, auto-pull embeddings deplace en infrastructure. Chemins HTTP inchanges. Web : SettingsComponent (729 l.) recentre sur le formulaire (~330 l.) ; sous-composants standalone updates-section (MAJ + licence Patreon + switch canal) et ollama-model-manager (liste/pull/suppression de modeles). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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137
brain/app/api/routers/generation.py
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137
brain/app/api/routers/generation.py
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"""Endpoints de génération « simple » : prompt libre, page de Lore, auto-titre."""
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from typing import Annotated, Literal
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from fastapi import APIRouter, Depends, HTTPException
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from pydantic import BaseModel, Field
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from app.api.deps import get_generate_page_use_case, get_llm_provider
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from app.application.generate_page import GeneratePageUseCase
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from app.core.config import Settings, get_settings
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from app.domain.models import PageGenerationContext
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from app.domain.ports import LLMProvider, LLMProviderError
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router = APIRouter()
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class GenerateRequest(BaseModel):
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prompt: str
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class GenerateResponse(BaseModel):
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model: str
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response: str
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@router.post("/generate", response_model=GenerateResponse)
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async def generate(
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body: GenerateRequest,
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settings: Annotated[Settings, Depends(get_settings)],
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llm: Annotated[LLMProvider, Depends(get_llm_provider)],
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) -> GenerateResponse:
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"""Endpoint libre : prompt → texte brut. Utile pour debug et exploration."""
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try:
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text = await llm.generate(body.prompt)
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except LLMProviderError as exc:
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raise HTTPException(status_code=502, detail=str(exc)) from exc
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return GenerateResponse(model=settings.llm_model, response=text)
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class GeneratePageRequestDTO(BaseModel):
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"""Contexte envoyé par le Core Java pour remplir une page via le LLM."""
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lore_name: str
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folder_name: str
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template_name: str
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template_fields: list[str] = Field(min_length=1)
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page_title: str
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lore_description: str | None = None
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class GeneratePageResponseDTO(BaseModel):
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"""Retour : une valeur textuelle par champ du template (clé = field name)."""
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values: dict[str, str]
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@router.post("/generate-page", response_model=GeneratePageResponseDTO)
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async def generate_page(
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body: GeneratePageRequestDTO,
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use_case: Annotated[
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GeneratePageUseCase, Depends(get_generate_page_use_case)
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],
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) -> GeneratePageResponseDTO:
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"""Endpoint métier : contexte LoreMind → valeurs structurées par champ.
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Branche tout le use case `GeneratePageUseCase`. Ce controller ne fait
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que le mapping DTO ↔ dataclass et la traduction d'erreur domaine → HTTP.
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"""
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context = PageGenerationContext(
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lore_name=body.lore_name,
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lore_description=body.lore_description,
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folder_name=body.folder_name,
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template_name=body.template_name,
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template_fields=body.template_fields,
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page_title=body.page_title,
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)
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try:
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result = await use_case.execute(context)
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except LLMProviderError as exc:
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raise HTTPException(status_code=502, detail=str(exc)) from exc
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return GeneratePageResponseDTO(values=result.values)
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# --- Auto-titre d'une conversation persistee --------------------------------
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class SummarizeTitleMessageDTO(BaseModel):
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role: Literal["user", "assistant", "system"]
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content: str
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class SummarizeTitleRequestDTO(BaseModel):
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"""Premiers messages d'une conversation pour auto-generer un titre court."""
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messages: list[SummarizeTitleMessageDTO] = Field(default_factory=list)
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class SummarizeTitleResponseDTO(BaseModel):
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title: str
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_TITLE_SYSTEM_PROMPT = (
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"Tu generes un titre court (4 a 7 mots max) qui resume le sujet de la "
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"conversation ci-dessous. Reponds UNIQUEMENT par le titre, sans guillemets, "
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"sans ponctuation finale, sans prefixe type 'Titre :'. Le titre doit etre "
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"en francais et capturer le sujet metier (pas 'Conversation IA')."
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)
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@router.post("/summarize/conversation-title", response_model=SummarizeTitleResponseDTO)
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async def summarize_conversation_title(
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body: SummarizeTitleRequestDTO,
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llm: Annotated[LLMProvider, Depends(get_llm_provider)],
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) -> SummarizeTitleResponseDTO:
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"""Genere un titre court a partir des premiers echanges de la conversation.
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Appele par le core apres le 1er couple user/assistant, pour remplacer le
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titre provisoire "Nouvelle conversation" par quelque chose de parlant.
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"""
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if not body.messages:
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raise HTTPException(status_code=422, detail="Au moins un message requis")
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transcript = "\n".join(f"{m.role.upper()}: {m.content}" for m in body.messages[:6])
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prompt = f"{_TITLE_SYSTEM_PROMPT}\n\nConversation :\n{transcript}\n\nTitre :"
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try:
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raw = await llm.generate(prompt)
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except LLMProviderError as exc:
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raise HTTPException(status_code=502, detail=str(exc)) from exc
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title = raw.strip().splitlines()[0].strip().strip('"').strip("'").rstrip(".")
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if len(title) > 80:
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title = title[:80].rstrip()
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if not title:
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title = "Nouvelle conversation"
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return SummarizeTitleResponseDTO(title=title)
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