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

from app.core.response import ApiResponse, ok
from app.core.user_context import UserContext, get_user_context
from app.db.session import get_db
from app.schemas.case import (
    CaseDeletePreviewResponse,
    CaseDeleteRequest,
    CaseDeleteResponse,
    CaseDetailResponse,
    CaseListResponse,
)
from app.services.case_service import CaseService

router = APIRouter()


@router.get("", response_model=ApiResponse[CaseListResponse])
def list_cases(
    _: UserContext = Depends(get_user_context),
    db: Session = Depends(get_db),
    department_id: int | None = Query(default=None),
    training_type: str | None = Query(default=None),
    mode: str | None = Query(default=None),
):
    """病例列表：返回当前可用的激活病例，不暴露标准答案。"""
    return ok(CaseService(db).list_cases(department_id=department_id, training_type=training_type, mode=mode))


@router.get("/{case_id}", response_model=ApiResponse[CaseDetailResponse])
def get_case_detail(
    case_id: int,
    _: UserContext = Depends(get_user_context),
    db: Session = Depends(get_db),
):
    """病例详情：返回训练入口信息和可申请检查类型。"""
    return ok(CaseService(db).get_case_detail(case_id))


@router.get("/{case_id}/delete-preview", response_model=ApiResponse[CaseDeletePreviewResponse])
def get_case_delete_preview(
    case_id: int,
    _: UserContext = Depends(get_user_context),
    db: Session = Depends(get_db),
):
    """病例删除预览：返回删除该病例会影响的训练与病例数据数量。"""
    return ok(CaseService(db).get_delete_preview(case_id))


@router.delete("/{case_id}", response_model=ApiResponse[CaseDeleteResponse])
def delete_case(
    case_id: int,
    payload: CaseDeleteRequest,
    ctx: UserContext = Depends(get_user_context),
    db: Session = Depends(get_db),
):
    """病例删除：确认后级联删除病例、扩展表、评分规则、检查项和关联训练数据。"""
    return ok(CaseService(db).delete_case(case_id, payload, ctx))