from fastapi import APIRouter, Depends, Form
from sqlalchemy.orm import Session
from datetime import datetime
from typing import Optional
from database import get_db
import models
from auth import require_admin

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

# 이미지 설정 기본값
IMAGE_DEFAULTS = {
    "image_compress_enabled": "true",
    "image_max_px":           "1024",
    "image_quality":          "85",
}

def upsert(db, key, value):
    s = db.query(models.SystemSetting).filter_by(key=key).first()
    if s:
        s.value      = value
        s.updated_at = datetime.now()
    else:
        db.add(models.SystemSetting(key=key, value=value))

# ── 공개 엔드포인트: 이미지 설정만 반환 (인증 불필요 — 신고 페이지에서 사용)
@router.get("/public")
def get_public_settings(db: Session = Depends(get_db)):
    rows = db.query(models.SystemSetting).filter(
        models.SystemSetting.key.in_(IMAGE_DEFAULTS.keys())
    ).all()
    result = dict(IMAGE_DEFAULTS)          # 기본값으로 채운 뒤
    for r in rows:
        result[r.key] = r.value            # DB 값으로 덮어쓰기
    return {
        "image_compress_enabled": result["image_compress_enabled"] == "true",
        "image_max_px":           int(result["image_max_px"]),
        "image_quality":          int(result["image_quality"]),
    }

# ── 관리자 전체 설정 조회
@router.get("")
def get_settings(db: Session = Depends(get_db), _=Depends(require_admin)):
    rows = db.query(models.SystemSetting).all()
    result = dict(IMAGE_DEFAULTS)
    for r in rows:
        result[r.key] = r.value
    return result

# ── 관리자 설정 저장 (신고공개정책 + 이미지설정 통합)
@router.put("")
def update_settings(
    report_visibility_policy: str         = Form(...),
    image_compress_enabled:   str         = Form("true"),
    image_max_px:             str         = Form("1024"),
    image_quality:            str         = Form("85"),
    db: Session                           = Depends(get_db),
    _                                     = Depends(require_admin)
):
    pairs = [
        ("report_visibility_policy", report_visibility_policy),
        ("image_compress_enabled",   image_compress_enabled),
        ("image_max_px",             image_max_px),
        ("image_quality",            image_quality),
    ]
    for key, val in pairs:
        upsert(db, key, val)
    db.commit()
    return {"ok": True}