from __future__ import annotations

from .shared import *
from .helpers import _resolve_tenant_id
from .. import rag_ask_contract
from ...services.ai_pmo.ai_pmo_kernel import AIPMOKernelService

@router.post("/ask")
async def rag_ask(
    request: RAGAskRequest,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id),
):
    service = AIPMOKernelService(
        db,
        tenant_id=rag_ask_contract.resolve_effective_tenant_id(current_user, tenant_id),
    )
    ingress_result = await service.process_ingress(
        **rag_ask_contract.build_kernel_ingress_kwargs(
            request=request,
            current_user=current_user,
        )
    )
    if not bool(ingress_result.get("handled")):
        raise HTTPException(
            status_code=400,
            detail=str(ingress_result.get("reason") or "ai_pmo_kernel_not_handled"),
        )
    return success_response(
        rag_ask_contract.build_rag_response_payload(ingress_result=ingress_result),
    )

@router.get("/manifest")
async def rag_manifest(
    project_id: int | None = Query(default=None),
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id),
):
    service = AdaptiveRAGService(db, tenant_id=_resolve_tenant_id(current_user, tenant_id))
    data = await service.get_project_manifest(project_id=project_id)
    return success_response(data)

@router.get("/features/catalog")
async def rag_feature_catalog(
    query: str | None = Query(default=None),
    limit: int = Query(default=20, ge=1, le=200),
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id),
):
    service = AdaptiveRAGService(db, tenant_id=_resolve_tenant_id(current_user, tenant_id))
    data = await service.get_feature_catalog(query=query, limit=limit)
    return success_response(data)

@router.post("/entity-resolution")
async def rag_entity_resolution(
    request: EntityResolutionRequest,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id),
):
    service = AdaptiveRAGService(db, tenant_id=_resolve_tenant_id(current_user, tenant_id))
    data = await service.entity_resolution(
        question=request.question,
        project_id=request.project_id,
        limit=request.limit,
    )
    return success_response(data)

@router.post("/multi-step-search")
async def rag_multi_step_search(
    request: MultiStepSearchRequest,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id),
):
    service = AdaptiveRAGService(db, tenant_id=_resolve_tenant_id(current_user, tenant_id))
    data = await service.multi_step_search(
        question=request.question,
        project_id=request.project_id,
        source_chat_id=request.source_chat_id,
        session_state=None,
    )
    return success_response(data)

@router.post("/symbols/sync")
async def rag_symbols_sync(
    request: SymbolSyncRequest,
    current_user: User = Depends(require_roles("ADMIN", "BOSS")),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id),
):
    service = SymbolIndexService(db, tenant_id=_resolve_tenant_id(current_user, tenant_id))
    data = await service.sync_codebase_symbols(
        base_dir=request.base_dir,
        max_files=request.max_files,
        force_reindex=request.force_reindex,
    )
    return success_response(data)

@router.post("/symbols/search")
async def rag_symbols_search(
    request: SymbolSearchRequest,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id),
):
    service = SymbolIndexService(db, tenant_id=_resolve_tenant_id(current_user, tenant_id))
    data = await service.search_symbols(
        query=request.query,
        language=request.language,
        symbol_type=request.symbol_type,
        limit=request.limit,
    )
    return success_response(data)

@router.get("/symbols/overview")
async def rag_symbols_overview(
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id),
):
    service = SymbolIndexService(db, tenant_id=_resolve_tenant_id(current_user, tenant_id))
    data = await service.get_overview(top_n_files=10, auto_sync_if_empty=False)
    return success_response(data)

@router.get("/symbols/{symbol_id}")
async def rag_symbol_detail(
    symbol_id: int,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id),
):
    service = SymbolIndexService(db, tenant_id=_resolve_tenant_id(current_user, tenant_id))
    try:
        data = await service.get_symbol_detail(symbol_id=symbol_id)
    except ValueError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc
    return success_response(data)