from datetime import datetime

from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy.orm import Session

from ..database import get_db
from ..models import Consumer, Event, ParseJob
from ..schemas import (
    AnalyticsSummary,
    ConsumerCreate,
    ConsumerRead,
    ConsumerUpdate,
    EventListResponse,
    EventRead,
    ParseJobCreate,
    ParseJobRead,
    TimelinePoint,
    TopItem,
)
from ..services.analytics import (
    get_analytics_summary,
    get_timeline,
    get_top_localities,
    get_top_regions,
)
from ..services.events_query import build_events_query
from ..services.filtering import (
    consumer_to_read,
    create_consumer,
    list_consumers,
    rotate_consumer_key,
    update_consumer,
)
from ..services.jobs import enqueue_job

router = APIRouter(prefix="/admin", tags=["admin"])


@router.post("/jobs", response_model=ParseJobRead, status_code=201)
def create_parse_job(payload: ParseJobCreate, db: Session = Depends(get_db)):
    job = ParseJob(
        source_type=payload.source_type,
        source_config=payload.source_config,
        schedule=payload.schedule,
        status="queued",
    )
    db.add(job)
    db.commit()
    db.refresh(job)

    enqueue_job(job.id, job.source_type, job.source_config)
    return job


@router.get("/jobs", response_model=list[ParseJobRead])
def list_parse_jobs(db: Session = Depends(get_db)):
    return db.query(ParseJob).order_by(ParseJob.id.desc()).all()


@router.get("/jobs/{job_id}", response_model=ParseJobRead)
def get_parse_job(job_id: int, db: Session = Depends(get_db)):
    job = db.query(ParseJob).filter(ParseJob.id == job_id).first()
    if not job:
        raise HTTPException(status_code=404, detail="Job not found")
    return job


@router.post("/jobs/{job_id}/retry", response_model=ParseJobRead)
def retry_parse_job(job_id: int, db: Session = Depends(get_db)):
    job = db.query(ParseJob).filter(ParseJob.id == job_id).first()
    if not job:
        raise HTTPException(status_code=404, detail="Job not found")

    job.status = "queued"
    job.last_error = None
    db.commit()
    db.refresh(job)

    enqueue_job(job.id, job.source_type, job.source_config)
    return job


@router.get("/events", response_model=EventListResponse)
def list_events(
    limit: int = Query(default=50, ge=1, le=1000),
    offset: int = Query(default=0, ge=0),
    source_type: str | None = None,
    region: str | None = None,
    topic: str | None = None,
    locality: str | None = None,
    date_from: datetime | None = None,
    date_to: datetime | None = None,
    search: str | None = None,
    db: Session = Depends(get_db),
):
    query = build_events_query(
        db,
        source_type=source_type,
        region=region,
        topic=topic,
        locality=locality,
        date_from=date_from,
        date_to=date_to,
        search=search,
    )
    total = query.count()
    items = query.offset(offset).limit(limit).all()
    return EventListResponse(items=items, total=total)


@router.get("/analytics/summary", response_model=AnalyticsSummary)
def analytics_summary(db: Session = Depends(get_db)):
    return get_analytics_summary(db)


@router.get("/analytics/timeline", response_model=list[TimelinePoint])
def analytics_timeline(
    days: int = Query(default=30, ge=1, le=365),
    db: Session = Depends(get_db),
):
    return get_timeline(db, days=days)


@router.get("/analytics/top-localities", response_model=list[TopItem])
def analytics_top_localities(
    limit: int = Query(default=10, ge=1, le=100),
    db: Session = Depends(get_db),
):
    return get_top_localities(db, limit=limit)


@router.get("/analytics/top-regions", response_model=list[TopItem])
def analytics_top_regions(
    limit: int = Query(default=10, ge=1, le=100),
    db: Session = Depends(get_db),
):
    return get_top_regions(db, limit=limit)


@router.get("/consumers", response_model=list[ConsumerRead])
def list_pi_consumers(db: Session = Depends(get_db)):
    return [consumer_to_read(c) for c in list_consumers(db)]


@router.post("/consumers", response_model=ConsumerRead, status_code=201)
def create_pi_consumer(payload: ConsumerCreate, db: Session = Depends(get_db)):
    consumer, api_key = create_consumer(
        db,
        name=payload.name,
        regions=payload.regions,
        topics=payload.topics,
        date_from=payload.date_from,
    )
    return consumer_to_read(consumer, api_key=api_key)


@router.patch("/consumers/{consumer_id}", response_model=ConsumerRead)
def patch_pi_consumer(
    consumer_id: int,
    payload: ConsumerUpdate,
    db: Session = Depends(get_db),
):
    consumer = db.query(Consumer).filter(Consumer.id == consumer_id).first()
    if not consumer:
        raise HTTPException(status_code=404, detail="Consumer not found")

    consumer = update_consumer(
        db,
        consumer,
        name=payload.name,
        is_active=payload.is_active,
        regions=payload.regions,
        topics=payload.topics,
        date_from=payload.date_from,
    )
    return consumer_to_read(consumer)


@router.post("/consumers/{consumer_id}/rotate-key", response_model=ConsumerRead)
def rotate_pi_consumer_key(consumer_id: int, db: Session = Depends(get_db)):
    consumer = db.query(Consumer).filter(Consumer.id == consumer_id).first()
    if not consumer:
        raise HTTPException(status_code=404, detail="Consumer not found")

    consumer, api_key = rotate_consumer_key(db, consumer)
    return consumer_to_read(consumer, api_key=api_key)