from core_domain import HumanTaskStatus, ServiceHealth
from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy import text
from sqlalchemy.orm import Session

from app.application.services import HumanApplicationService
from app.db.session import get_db
from app.domain.repositories import HumanTaskRepository
from app.schemas.human import (
    HumanTaskClaimRequest,
    HumanTaskCompleteRequest,
    HumanTaskCreateRequest,
    HumanTaskResponse,
)

router = APIRouter()


def get_human_application_service(db: Session = Depends(get_db)) -> HumanApplicationService:
    return HumanApplicationService(human_task_repository=HumanTaskRepository(db))


@router.get("/health", response_model=ServiceHealth)
def health_check(db: Session = Depends(get_db)) -> ServiceHealth:
    db.execute(text("SELECT 1"))
    return ServiceHealth(service="human-service", status="ok", database="ok")


@router.post("/tasks", response_model=HumanTaskResponse)
def create_human_task(
    payload: HumanTaskCreateRequest,
    service: HumanApplicationService = Depends(get_human_application_service)) -> HumanTaskResponse:
    return HumanTaskResponse.from_entity(service.create_task(payload))


@router.get("/tasks", response_model=list[HumanTaskResponse])
def list_human_tasks(
    status: HumanTaskStatus | None = Query(default=None),
    assigned_to: str | None = Query(default=None),
    run_id: str | None = Query(default=None),
    limit: int = Query(default=100, ge=1, le=500),
    service: HumanApplicationService = Depends(get_human_application_service)) -> list[HumanTaskResponse]:
    return [
        HumanTaskResponse.from_entity(item)
        for item in service.list_tasks(
            status=status,
            assigned_to=assigned_to,
            run_id=run_id,
            limit=limit)
    ]


@router.get("/tasks/{human_task_id}", response_model=HumanTaskResponse)
def get_human_task(
    human_task_id: str,
    service: HumanApplicationService = Depends(get_human_application_service)) -> HumanTaskResponse:
    entity = service.get_task(human_task_id=human_task_id)
    if entity is None:
        raise HTTPException(status_code=404, detail=f"human task not found: {human_task_id}")
    return HumanTaskResponse.from_entity(entity)


@router.post("/tasks/{human_task_id}/claim", response_model=HumanTaskResponse)
def claim_human_task(
    human_task_id: str,
    payload: HumanTaskClaimRequest,
    service: HumanApplicationService = Depends(get_human_application_service)) -> HumanTaskResponse:
    entity = service.claim_task(human_task_id=human_task_id, payload=payload)
    if entity is None:
        raise HTTPException(status_code=404, detail=f"human task not found: {human_task_id}")
    return HumanTaskResponse.from_entity(entity)


@router.post("/tasks/{human_task_id}/complete", response_model=HumanTaskResponse)
def complete_human_task(
    human_task_id: str,
    payload: HumanTaskCompleteRequest,
    service: HumanApplicationService = Depends(get_human_application_service)) -> HumanTaskResponse:
    entity = service.complete_task(human_task_id=human_task_id, payload=payload)
    if entity is None:
        raise HTTPException(status_code=404, detail=f"human task not found: {human_task_id}")
    return HumanTaskResponse.from_entity(entity)