"""Hybrid Grant Intelligence System — admin dashboard, rekomendacje, research."""
from __future__ import annotations

import logging
import os
from typing import Any, Dict, List, Optional

from fastapi import APIRouter, Depends, Query
from pydantic import BaseModel, Field

from core.subscription.db import SessionLocal

logger = logging.getLogger(__name__)


def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()

router = APIRouter(prefix="/intelligence", tags=["grant-intelligence"])


class CompanyProfileRequest(BaseModel):
    name: Optional[str] = ""
    size: str = "mikro"
    region: Optional[str] = None
    voivodeship: Optional[str] = None
    pkd: List[str] = Field(default_factory=list)
    pkd_codes: List[str] = Field(default_factory=list)
    entity_type: str = "przedsiębiorca"
    industry: Optional[str] = None


class HybridSearchRequest(BaseModel):
    query: str = ""
    filters: Dict[str, Any] = Field(default_factory=dict)
    limit: int = 50
    trusted_only: bool = False


class GrantResearchRequest(BaseModel):
    grant_id: str
    company_profile: Optional[CompanyProfileRequest] = None
    changes: List[Dict[str, Any]] = Field(default_factory=list)


class ResolveVerificationRequest(BaseModel):
    resolution_note: str = ""
    status: str = "approved"


@router.get("/dashboard")
async def intelligence_dashboard(db=Depends(get_db)):
    """Dashboard administracyjny: research, kompletność, kolejka weryfikacji."""
    from core.grants.catalog_service import get_catalog_stats
    from core.grants.human_verification import hvq_stats, list_pending_verifications
    from core.grants.live_research import research_source_state
    from core.grants.versioning import get_recent_versions

    return {
        "status": "ok",
        "layers": {
            "curated_kb": get_catalog_stats(db),
            "live_research": research_source_state(db),
            "human_verification": hvq_stats(db),
            "recent_changes": get_recent_versions(db, limit=15),
            "pending_verifications": list_pending_verifications(db, limit=20),
        },
        "feature_flags": {
            "ENABLE_LIVE_RESEARCH": os.environ.get("ENABLE_LIVE_RESEARCH", "true"),
            "ENABLE_GRANT_RESEARCH_AGENT": os.environ.get("ENABLE_GRANT_RESEARCH_AGENT", "true"),
            "ENABLE_HYBRID_SEARCH": os.environ.get("ENABLE_HYBRID_SEARCH", "true"),
            "ENABLE_PINECONE_SEMANTIC": os.environ.get("ENABLE_PINECONE_SEMANTIC", "true"),
            "HUMAN_VERIF_QUEUE": os.environ.get("HUMAN_VERIF_QUEUE", "true"),
        },
        "hybrid_search_status": __import__(
            "core.grants.hybrid_search_status", fromlist=["get_hybrid_search_status"]
        ).get_hybrid_search_status(),
    }


@router.post("/recommendations")
async def company_recommendations(request: CompanyProfileRequest, db=Depends(get_db)):
    """Rekomendacje dla firmy z relevance score i wyjaśnieniem."""
    from core.grants.recommendations import recommend_grants_for_company

    company = request.model_dump()
    if company.get("voivodeship") and not company.get("region"):
        company["region"] = company["voivodeship"]
    if company.get("pkd_codes") and not company.get("pkd"):
        company["pkd"] = company["pkd_codes"]
    return recommend_grants_for_company(db, company, limit=15)


@router.post("/hybrid-search")
async def hybrid_search_endpoint(request: HybridSearchRequest, db=Depends(get_db)):
    """Hybrydowe wyszukiwanie PostgreSQL FTS + Pinecone semantic."""
    from core.grants.hybrid_search import hybrid_search_catalog

    results = hybrid_search_catalog(
        db,
        query=request.query,
        filters=request.filters,
        limit=request.limit,
        trusted_only=request.trusted_only,
    )
    return {"status": "ok", "count": len(results), "grants": results}


@router.post("/research/run-cycle")
async def run_research_cycle(db=Depends(get_db)):
    """Uruchamia cykl Live Research (detection + job queue)."""
    from core.grants.live_research import run_live_research_cycle

    return {"status": "ok", **run_live_research_cycle(db)}


@router.get("/research/jobs")
async def list_jobs(
    status: Optional[str] = Query(None),
    limit: int = Query(50, ge=1, le=200),
    db=Depends(get_db),
):
    from core.grants.live_research import list_research_jobs

    return {"status": "ok", "jobs": list_research_jobs(db, status=status, limit=limit)}


@router.post("/agent/run")
async def run_research_agent(request: GrantResearchRequest, db=Depends(get_db)):
    """Ręczne uruchomienie grant_research_agent LangGraph."""
    from agents.grant_research_agent import run_grant_research_agent
    from core.grants.completeness import grant_dict_from_row
    from core.grants.models import Grant

    row = db.query(Grant).filter(Grant.source_id == request.grant_id).first()
    if not row:
        return {"status": "error", "detail": "grant_not_found"}
    grant_data = grant_dict_from_row(row)
    company = request.company_profile.model_dump() if request.company_profile else {}
    result = run_grant_research_agent(
        grant_data,
        changes=request.changes,
        company_profile=company,
    )
    return {"status": "ok", "result": result}


@router.get("/verification/queue")
async def verification_queue(
    status: str = Query("pending"),
    limit: int = Query(50, ge=1, le=200),
    db=Depends(get_db),
):
    from core.grants.human_verification import list_pending_verifications

    return {
        "status": "ok",
        "items": list_pending_verifications(db, status=status, limit=limit),
    }


@router.post("/verification/{item_id}/resolve")
async def resolve_verification_item(
    item_id: str,
    request: ResolveVerificationRequest,
    db=Depends(get_db),
):
    from core.grants.human_verification import resolve_verification

    return resolve_verification(
        db,
        item_id,
        resolution_note=request.resolution_note,
        new_status=request.status,
    )


@router.get("/versions")
async def grant_versions(
    grant_id: Optional[str] = Query(None),
    limit: int = Query(50, ge=1, le=200),
    db=Depends(get_db),
):
    from core.grants.versioning import get_recent_versions

    return {
        "status": "ok",
        "versions": get_recent_versions(db, grant_source_id=grant_id, limit=limit),
    }


def register_intelligence_routes(app) -> None:
    """Montuje router na aplikacji FastAPI."""
    app.include_router(router)
    logger.info("[GrantIntelligence] endpoints registered at /api/grants/intelligence")