from typing import Any

from fastapi import APIRouter, Depends, HTTPException
from starlette.requests import Request
from app.api.dependencies import verify_api_key
from app.api.limiter import limiter
from app.core.logger import get_logger
from app.core.metrics import metrics
from app.models.report import EngineeringReport
from app.models.repository import RepositoryRequest, RepositoryResponse
from app.models.job import JobStatus, JobStatusResponse, JobSubmitResponse
from app.worker.tasks import analyze_repository_task
from app.services.analysis_service import run_full_analysis
from app.agents import repo_analysis_agent
from app.models.review import ReviewFeedback
from app.tools.github_tool import clone_repository, delete_repository
from app.api.limiter import LIMIT_SYNC_ANALYZE, LIMIT_ASYNC_SUBMIT, LIMIT_JOB_POLL
from celery.result import AsyncResult


router = APIRouter()

logger = get_logger(__name__)


@router.get("/health")
def health_check() -> dict[str, str]:
    return {"status": "ok", "message": "AI Code Review Agent is running"}

# REPLACE the body of analyze_repository with:
@router.post(
    "/analyze", response_model=EngineeringReport, dependencies=[Depends(verify_api_key)]
)
@limiter.limit(LIMIT_SYNC_ANALYZE)
async def analyze_repository(
    request: Request, body: RepositoryRequest
) -> EngineeringReport:
    """
    Full pipeline with Redis cache:
    1. Check cache by HEAD SHA
    2. If miss: clone, run agents, store result
    3. Return engineering report
    """
    try:
        return await run_full_analysis(body.github_url, body.base_sha)
    except HTTPException:
        raise
    except Exception as exc:
        logger.exception(
            "Pipeline failed", extra={"url": body.github_url, "error": str(exc)}
        )
        raise HTTPException(
            status_code=500, detail="Internal server error. Check server logs."
        )

@router.post(
    "/analyze/async",
    response_model=JobSubmitResponse,
    status_code=202,
    dependencies=[Depends(verify_api_key)],
)
@limiter.limit(LIMIT_ASYNC_SUBMIT)
async def analyze_repository_async(
    request: Request, body: RepositoryRequest
) -> JobSubmitResponse:
    """
    Enqueue a full analysis pipeline run on a Celery worker and return
    immediately with a job ID. Poll GET /jobs/{job_id} for status/result.
    """
    task = analyze_repository_task.delay(body.github_url, body.base_sha)
    return JobSubmitResponse(job_id=task.id, status=JobStatus.PENDING)


@router.get(
    "/jobs/{job_id}",
    response_model=JobStatusResponse,
    dependencies=[Depends(verify_api_key)],
)
@limiter.limit(LIMIT_JOB_POLL)
def get_job_status(request: Request, job_id: str) -> JobStatusResponse:
    """Poll the status/result of an async analysis job."""
    result = AsyncResult(job_id)

    status_map = {
        "PENDING": JobStatus.PENDING,
        "STARTED": JobStatus.STARTED,
        "SUCCESS": JobStatus.SUCCESS,
        "FAILURE": JobStatus.FAILURE,
        "RETRY": JobStatus.STARTED,
    }
    status = status_map.get(result.status, JobStatus.PENDING)

    if status == JobStatus.SUCCESS:
        return JobStatusResponse(job_id=job_id, status=status, result=result.result)
    if status == JobStatus.FAILURE:
        return JobStatusResponse(job_id=job_id, status=status, error=str(result.result))
    return JobStatusResponse(job_id=job_id, status=status)


@router.post(
    "/quick-analyze",
    response_model=RepositoryResponse,
    dependencies=[Depends(verify_api_key)],
)
@limiter.limit("10/minute")
async def quick_analyze(
    request: Request, body: RepositoryRequest
) -> RepositoryResponse:
    """
    Only run repository analysis agent.
    Faster, for testing purposes.
    """
    local_path = None

    try:
        local_path = clone_repository(body.github_url)
        metadata = await repo_analysis_agent.run(body.github_url, local_path)

        return RepositoryResponse(
            success=True, message="Repository analyzed successfully", data=metadata
        )
    except HTTPException:
        raise
    except Exception as exc:
        logger.exception(
            "Quick analyze failed", extra={"url": body.github_url, "error": str(exc)}
        )
        raise HTTPException(
            status_code=500, detail="Internal server error. Check server logs."
        )

    finally:
        if local_path:
            delete_repository(local_path)


@router.get("/metrics", dependencies=[Depends(verify_api_key)])
def get_metrics() -> dict[str, Any]:
    """Observability endpoint: agent run counts, error rates, latencies."""
    return metrics.snapshot()


_feedback_store: list[dict] = []


def _clear_feedback_store() -> None:  # test helper only
    _feedback_store.clear()


@router.post("/feedback", dependencies=[Depends(verify_api_key)])
async def submit_feedback(body: ReviewFeedback) -> dict[str, str]:
    _feedback_store.append(body.model_dump())
    logger.info(
        "Feedback received", extra={"useful": body.useful, "finding": body.finding[:50]}
    )
    return {"status": "recorded"}


@router.get("/feedback/summary", dependencies=[Depends(verify_api_key)])
def feedback_summary() -> dict[str, int]:
    useful = sum(1 for f in _feedback_store if f["useful"])
    not_useful = len(_feedback_store) - useful
    return {"useful": useful, "not_useful": not_useful, "total": len(_feedback_store)}