"""카카오 지도 JS 키 · 좌표 → 주소 공용 길(529-2 · 591-1) — B08 거리이정표 · D 예정노선이 씀.

GET /api/map/kakao-key   {key} — 공개용(도메인 등록으로 막힘) · .env KAKAO_JS_KEY · 없으면 null
GET /api/map/address     {address, region, source} — VWorld(B08 과 같은 길) · 지번 먼저 · 없음 null
GET /api/map/search?q=   {items: [{kind address|place, title, address, lon, lat}], source} — 594-4 ·
                         등록(D01) · 예정노선 위치 칸이 같이 씀 · VWorld 주소 + 장소
"""

from __future__ import annotations

import asyncio
import os
from typing import Any

from fastapi import APIRouter, Query

from B01_Dashboard.B01_Dashboard_Map import reverse_place, search_address, search_place

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

KAKAO_JS = "KAKAO_JS_KEY"
ADDRESS_SOURCE = "VWorld"


@router.get("/kakao-key")
async def kakao_map_key() -> dict[str, Any]:
    """없으면 null = 화면 안내 한 줄."""
    return {"key": os.environ.get(KAKAO_JS, "").strip() or None}


@router.get("/address")
async def map_address(
    lon: float = Query(..., ge=120, le=135), lat: float = Query(..., ge=30, le=45)
) -> dict[str, Any]:
    """좌표 → 주소 · 「시군구 읍면」(사업 지역 채움) · 출처."""
    return {**await reverse_place(lon, lat), "source": ADDRESS_SOURCE}


@router.get("/search")
async def map_search(
    q: str = Query(..., min_length=1, max_length=100), size: int = Query(10, ge=1, le=30)
) -> dict[str, Any]:
    """주소 · 장소 찾기(594-4) — 주소(도로명 → 지번) 먼저 · 장소 뒤 · 같은 줄 하나 · 키는 서버."""
    query = q.strip()
    if not query:
        return {"items": [], "source": ADDRESS_SOURCE}
    addresses, places = await asyncio.gather(search_address(query, size), search_place(query, size))
    items = [
        {
            "kind": "address",
            "title": hit[hit["category"]] or hit["road"] or hit["parcel"],
            "address": hit["parcel"] if hit["category"] == "road" else hit["road"],
            "lon": hit["lon"],
            "lat": hit["lat"],
        }
        for hit in addresses
    ] + [
        {
            "kind": "place",
            "title": hit["title"],
            "address": hit["road"] or hit["parcel"],
            "lon": hit["lon"],
            "lat": hit["lat"],
        }
        for hit in places
    ]
    unique = {(item["title"], item["address"]): item for item in items}  # 같은 줄 하나(차례 그대로)
    return {"items": list(unique.values()), "source": ADDRESS_SOURCE}