from __future__ import annotations

import json
from typing import Any

from fastapi import APIRouter, Depends, Query
from sqlalchemy.ext.asyncio import AsyncSession

from app.dependencies import get_admin_user, get_db
from app.models.user import User
from app.schemas.private_portrait import (
    PrivatePortraitAdminConfigUpdate,
    PrivatePortraitAssetListOut,
    PrivatePortraitConfigOut,
    PrivatePortraitProjectListOut,
)
from app.services.operation_log import log_operation
from app.services.private_portrait.asset_service import (
    asset_to_out,
    get_user_private_portrait_config,
    list_assets,
    set_user_private_portrait_limit,
)
from app.services.private_portrait.project_service import list_projects, project_to_out

router = APIRouter(prefix="/admin/private-portrait", tags=["admin-private-portrait"])


def _json_detail(data: dict[str, Any]) -> str:
    return json.dumps(data, ensure_ascii=False, default=str)


@router.get("/users/{user_id}/config", response_model=PrivatePortraitConfigOut)
async def admin_get_private_portrait_config(
    user_id: str,
    admin: User = Depends(get_admin_user),
    db: AsyncSession = Depends(get_db),
):
    config = await get_user_private_portrait_config(db, user_id=user_id)
    await log_operation(
        db,
        admin.id,
        admin.username,
        "查看真人素材库配置",
        "GET",
        f"/admin/private-portrait/users/{user_id}/config",
        detail=_json_detail({"target_user_id": user_id, "config": config.model_dump(mode="json")}),
    )
    return config


@router.put("/users/{user_id}/config", response_model=PrivatePortraitConfigOut)
async def admin_update_private_portrait_config(
    user_id: str,
    payload: PrivatePortraitAdminConfigUpdate,
    admin: User = Depends(get_admin_user),
    db: AsyncSession = Depends(get_db),
):
    before = await get_user_private_portrait_config(db, user_id=user_id)
    await set_user_private_portrait_limit(db, user_id=user_id, limit=payload.private_portrait_image_limit)
    after = await get_user_private_portrait_config(db, user_id=user_id)
    await log_operation(
        db,
        admin.id,
        admin.username,
        f"设置真人素材库数量限制：{before.image_limit} -> {after.image_limit}",
        "PUT",
        f"/admin/private-portrait/users/{user_id}/config",
        detail=_json_detail(
            {
                "target_user_id": user_id,
                "before": before.model_dump(mode="json"),
                "after": after.model_dump(mode="json"),
            }
        ),
    )
    return after


@router.get("/projects", response_model=PrivatePortraitProjectListOut)
async def admin_list_private_portrait_projects(
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=100),
    user_id: str | None = Query(None),
    keyword: str | None = Query(None),
    status: str | None = Query(None),
    admin: User = Depends(get_admin_user),
    db: AsyncSession = Depends(get_db),
):
    items, total = await list_projects(db, user_id=user_id, page=page, page_size=page_size, keyword=keyword, status=status)
    await log_operation(
        db,
        admin.id,
        admin.username,
        "查看真人素材项目列表",
        "GET",
        "/admin/private-portrait/projects",
        detail=_json_detail(
            {
                "filters": {"user_id": user_id, "keyword": keyword, "status": status, "page": page, "page_size": page_size},
                "total": total,
                "returned_count": len(items),
            }
        ),
    )
    return PrivatePortraitProjectListOut(items=[project_to_out(item, include_user=True) for item in items], total=total, page=page, page_size=page_size)


@router.get("/assets", response_model=PrivatePortraitAssetListOut)
async def admin_list_private_portrait_assets(
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=100),
    user_id: str | None = Query(None),
    project_id: str | None = Query(None),
    keyword: str | None = Query(None),
    status: str | None = Query(None),
    admin: User = Depends(get_admin_user),
    db: AsyncSession = Depends(get_db),
):
    assets, total, project_name_map = await list_assets(db, user_id=user_id, project_id=project_id, status=status, keyword=keyword, page=page, page_size=page_size)
    await log_operation(
        db,
        admin.id,
        admin.username,
        "查看真人素材列表",
        "GET",
        "/admin/private-portrait/assets",
        detail=_json_detail(
            {
                "filters": {"user_id": user_id, "project_id": project_id, "keyword": keyword, "status": status, "page": page, "page_size": page_size},
                "total": total,
                "returned_count": len(assets),
            }
        ),
    )
    return PrivatePortraitAssetListOut(items=[asset_to_out(asset, project_name=project_name_map.get(asset.project_id), include_user=True) for asset in assets], total=total, page=page, page_size=page_size)