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

from core_domain import ServiceHealth

from app.application.services import SkillApplicationService
from app.db.session import get_db
from app.domain.repositories import (
    SkillDefinitionRepository,
    SkillInstallationRepository,
    SkillRunRepository,
    SkillVersionRepository,
)
from app.schemas.skill import (
    SkillCreateRequest,
    SkillInstallRequest,
    SkillInstallationResponse,
    SkillInstallationStatusUpdateRequest,
    SkillResponse,
    SkillRunCreateRequest,
    SkillRunExecuteRequest,
    SkillRunResponse,
    SkillStatusUpdateRequest,
    SkillVersionCreateRequest,
    SkillVersionResponse,
)

router = APIRouter()


def get_skill_application_service(db: Session = Depends(get_db)) -> SkillApplicationService:
    return SkillApplicationService(
        skill_repository=SkillDefinitionRepository(db),
        skill_version_repository=SkillVersionRepository(db),
        installation_repository=SkillInstallationRepository(db),
        skill_run_repository=SkillRunRepository(db),
    )


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


@router.post("", response_model=SkillResponse)
def create_skill(
    payload: SkillCreateRequest,
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> SkillResponse:
    return SkillResponse.from_entity(service.create_skill(payload))


@router.get("", response_model=list[SkillResponse])
def list_skills(
    tenant_id: str = Query(...),
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> list[SkillResponse]:
    return [SkillResponse.from_entity(item) for item in service.list_skills(tenant_id=tenant_id)]


@router.patch("/{skill_id}/status", response_model=SkillResponse)
def update_skill_status(
    skill_id: str,
    payload: SkillStatusUpdateRequest,
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> SkillResponse:
    entity = service.update_skill_status(skill_id=skill_id, payload=payload)
    if entity is None:
        raise HTTPException(status_code=404, detail=f"skill not found: {skill_id}")
    return SkillResponse.from_entity(entity)


@router.post("/versions", response_model=SkillVersionResponse)
def create_skill_version(
    payload: SkillVersionCreateRequest,
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> SkillVersionResponse:
    try:
        return SkillVersionResponse.from_entity(service.create_skill_version(payload))
    except ValueError as exc:
        raise HTTPException(status_code=422, detail=str(exc)) from exc


@router.get("/versions", response_model=list[SkillVersionResponse])
def list_skill_versions(
    tenant_id: str = Query(...),
    skill_id: str = Query(...),
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> list[SkillVersionResponse]:
    return [
        SkillVersionResponse.from_entity(item)
        for item in service.list_skill_versions(tenant_id=tenant_id, skill_id=skill_id)
    ]


@router.post("/installations", response_model=SkillInstallationResponse)
def install_skill(
    payload: SkillInstallRequest,
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> SkillInstallationResponse:
    try:
        return SkillInstallationResponse.from_entity(service.install_skill(payload))
    except ValueError as exc:
        raise HTTPException(status_code=422, detail=str(exc)) from exc


@router.get("/installations", response_model=list[SkillInstallationResponse])
def list_installations(
    tenant_id: str = Query(...),
    install_scope: str | None = Query(default=None),
    scope_id: str | None = Query(default=None),
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> list[SkillInstallationResponse]:
    return [
        SkillInstallationResponse.from_entity(item)
        for item in service.list_installations(
            tenant_id=tenant_id,
            install_scope=install_scope,
            scope_id=scope_id,
        )
    ]


@router.patch("/installations/{installation_id}/status", response_model=SkillInstallationResponse)
def update_installation_status(
    installation_id: str,
    payload: SkillInstallationStatusUpdateRequest,
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> SkillInstallationResponse:
    entity = service.update_installation_status(installation_id=installation_id, payload=payload)
    if entity is None:
        raise HTTPException(status_code=404, detail=f"skill installation not found: {installation_id}")
    return SkillInstallationResponse.from_entity(entity)


@router.post("/runs", response_model=SkillRunResponse)
def create_skill_run(
    payload: SkillRunCreateRequest,
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> SkillRunResponse:
    try:
        return SkillRunResponse.from_entity(service.create_skill_run(payload))
    except ValueError as exc:
        raise HTTPException(status_code=422, detail=str(exc)) from exc


@router.post("/runs/{skill_run_id}/execute", response_model=SkillRunResponse)
def execute_skill_run(
    skill_run_id: str,
    payload: SkillRunExecuteRequest,
    service: SkillApplicationService = Depends(get_skill_application_service),
) -> SkillRunResponse:
    entity = service.execute_skill_run(skill_run_id=skill_run_id, payload=payload)
    if entity is None:
        raise HTTPException(status_code=404, detail=f"skill_run not found: {skill_run_id}")
    return SkillRunResponse.from_entity(entity)