import { z } from "zod";
import { requireAdmin } from "@/lib/middleware/admin";
import {
  getAllStorageConfigs,
  getStorageConfigById,
  createStorageConfig,
  updateStorageConfig,
  deleteStorageConfig,
} from "@/lib/db/queries";
import { ChatSDKError } from "@/lib/errors";

const createStorageSchema = z.object({
  name: z.string().min(1).max(128),
  type: z.enum(["s3", "local"]),
  endpoint: z.string().optional(),
  region: z.string().max(64).optional(),
  bucket: z.string().max(128).optional(),
  accessKeyId: z.string().optional(),
  secretAccessKey: z.string().optional(),
  publicUrl: z.string().optional(),
  isDefault: z.boolean().optional(),
  isEnabled: z.boolean().optional(),
});

const updateStorageSchema = z.object({
  id: z.string().uuid(),
  name: z.string().min(1).max(128).optional(),
  type: z.enum(["s3", "local"]).optional(),
  endpoint: z.string().optional(),
  region: z.string().max(64).optional(),
  bucket: z.string().max(128).optional(),
  accessKeyId: z.string().optional(),
  secretAccessKey: z.string().optional(),
  publicUrl: z.string().optional(),
  isDefault: z.boolean().optional(),
  isEnabled: z.boolean().optional(),
});

export async function GET(request: Request) {
  try {
    await requireAdmin();

    const { searchParams } = new URL(request.url);
    const id = searchParams.get("id");

    if (id) {
      const config = await getStorageConfigById({ id });
      if (!config) {
        return new ChatSDKError("bad_request:api", "Storage config not found").toResponse();
      }
      // 隐藏敏感信息
      return Response.json({
        config: {
          ...config,
          accessKeyId: config.accessKeyId
            ? config.accessKeyId.slice(0, 4) + "****"
            : null,
          secretAccessKey: config.secretAccessKey ? "****" : null,
        },
      });
    }

    const configs = await getAllStorageConfigs();
    // 隐藏敏感信息
    return Response.json({
      configs: configs.map((c) => ({
        ...c,
        accessKeyId: c.accessKeyId ? c.accessKeyId.slice(0, 4) + "****" : null,
        secretAccessKey: c.secretAccessKey ? "****" : null,
      })),
    });
  } catch (error) {
    if (error instanceof ChatSDKError) {
      return error.toResponse();
    }
    return new ChatSDKError("offline:admin").toResponse();
  }
}

export async function POST(request: Request) {
  try {
    const session = await requireAdmin();

    const body = await request.json();
    const data = createStorageSchema.parse(body);

    const config = await createStorageConfig({
      ...data,
      updatedBy: session.user.id,
    });

    return Response.json({ config: config[0] });
  } catch (error) {
    if (error instanceof ChatSDKError) {
      return error.toResponse();
    }
    if (error instanceof z.ZodError) {
      return new ChatSDKError("bad_request:api", error.message).toResponse();
    }
    return new ChatSDKError("offline:admin").toResponse();
  }
}

export async function PUT(request: Request) {
  try {
    const session = await requireAdmin();

    const body = await request.json();
    const data = updateStorageSchema.parse(body);

    const config = await updateStorageConfig({
      ...data,
      updatedBy: session.user.id,
    });

    if (config.length === 0) {
      return new ChatSDKError("bad_request:api", "Storage config not found").toResponse();
    }

    return Response.json({ config: config[0] });
  } catch (error) {
    if (error instanceof ChatSDKError) {
      return error.toResponse();
    }
    if (error instanceof z.ZodError) {
      return new ChatSDKError("bad_request:api", error.message).toResponse();
    }
    return new ChatSDKError("offline:admin").toResponse();
  }
}

export async function DELETE(request: Request) {
  try {
    await requireAdmin();

    const { searchParams } = new URL(request.url);
    const id = searchParams.get("id");

    if (!id) {
      return new ChatSDKError("bad_request:api", "Storage config ID is required").toResponse();
    }

    await deleteStorageConfig({ id });

    return Response.json({ success: true });
  } catch (error) {
    if (error instanceof ChatSDKError) {
      return error.toResponse();
    }
    return new ChatSDKError("offline:admin").toResponse();
  }
}