import { NextResponse } from "next/server";
import { auth } from "@/app/(auth)/auth";
import { getSystemSetting } from "@/lib/db/queries";
import {
  AI_WASH_CONFIG_KEY,
  normalizeAiWashConfig,
  sanitizeAiWashConfigForClient,
} from "@/lib/ai-wash/config";
import {
  findStyleProImageModelByRef,
  getStyleProImageModelEntries,
  toPublicStyleProModelOption,
} from "@/lib/style-pro/model-options";
import { createLogger } from "@/lib/observability/logger";

const logger = createLogger("ai-wash-config-api");

export async function GET() {
  try {
    const session = await auth();
    if (!session?.user?.id) {
      return NextResponse.json({ error: "未授权，请先登录" }, { status: 401 });
    }

    const setting = await getSystemSetting({ key: AI_WASH_CONFIG_KEY });
    const config = normalizeAiWashConfig(setting?.value);
    const lockedModelRefs = Array.from(
      new Set(
        config.presets
          .flatMap((preset) => [
            preset.modelId,
            ...preset.controls.flatMap((control) =>
              control.levels.map((level) => level.modelId)
            ),
          ])
          .map((item) => String(item || "").trim())
          .filter(Boolean)
      )
    );
    const modelEntries =
      lockedModelRefs.length > 0
        ? await getStyleProImageModelEntries({ includeHidden: true })
        : [];
    const lockedModels = lockedModelRefs
      .map((modelRef) => findStyleProImageModelByRef(modelEntries, modelRef))
      .filter(Boolean)
      .map((entry) => toPublicStyleProModelOption(entry!));

    return NextResponse.json({
      success: true,
      config: sanitizeAiWashConfigForClient(config),
      lockedModels,
    });
  } catch (error) {
    logger.error("config_fetch_failed", error);
    return NextResponse.json({ error: "获取 AI洗图 配置失败" }, { status: 500 });
  }
}