from fastapi import APIRouter, Depends, HTTPException
from pydantic import ValidationError

from app.auth.project_dependencies import ProjectContext, get_metadata_repository, get_project_context
from app.infra.db.metadb.repositories.metadata_repository import MetadataRepository
from app.domain.schemas.project_map_config import PlaceSearchConfig, ProjectMapConfig

from app.domain.schemas.place_search import PlaceSearchItem, PlaceSearchRequest, PlaceSearchResponse, ReverseGeocodingRequest
from app.services.place_search import PlaceSearchError, search_tianditu_places
from app.services.reverse_geocoding import reverse_geocode_tianditu

router = APIRouter()


async def get_place_search_config(
    ctx: ProjectContext = Depends(get_project_context),
    metadata_repo: MetadataRepository = Depends(get_metadata_repository),
) -> PlaceSearchConfig:
    project = await metadata_repo.get_project_by_id(ctx.project_id)
    if project is None:
        raise HTTPException(status_code=404, detail="Project not found")
    try:
        config = ProjectMapConfig.model_validate(project.map_config or {}).place_search
    except ValidationError:
        raise HTTPException(status_code=503, detail="当前项目地名搜索配置无效") from None
    if config is None or not config.enabled:
        raise HTTPException(status_code=503, detail="当前项目暂未配置地名搜索")
    return config


@router.post(
    "/place-search-requests",
    response_model=PlaceSearchResponse,
    summary="Search project places",
    description="调用天地图地名搜索，按当前项目 map_config.place_search 的行政区范围，只返回前 10 个可定位候选，不提供分页。",
)
async def tianditu_place_search(
    request: PlaceSearchRequest,
    config: PlaceSearchConfig = Depends(get_place_search_config),
) -> PlaceSearchResponse:
    try:
        return await search_tianditu_places(request, config=config)
    except PlaceSearchError as exc:
        raise HTTPException(status_code=exc.status_code, detail=exc.detail) from exc


@router.post(
    "/reverse-geocoding-requests",
    response_model=PlaceSearchItem,
    summary="Reverse geocode a project map point",
    description="查询 EPSG:4326 地图取点的地名和地址，复用当前项目的地名搜索配置并保留输入坐标。",
)
async def tianditu_reverse_geocode(
    request: ReverseGeocodingRequest,
    config: PlaceSearchConfig = Depends(get_place_search_config),
) -> PlaceSearchItem:
    try:
        return await reverse_geocode_tianditu(request, config=config)
    except PlaceSearchError as exc:
        raise HTTPException(status_code=exc.status_code, detail=exc.detail) from exc