import type Database from "bun:sqlite";

import type { RuntimeMode } from "../shared/api";
import type { Logger } from "./logger";
import type { StaticAssets } from "./static";

import { createApiError, jsonResponse } from "./helpers";
import { withErrorHandler } from "./middleware";
import { handleMeta } from "./routes/meta";
import { serveStaticAsset } from "./static";
import { readAppVersion } from "./version";

export interface StartServerOptions {
  config: { host: string; port: number };
  db: Database;
  logger: Logger;
  mode: RuntimeMode;
  staticAssets?: StaticAssets;
  version?: string;
}

export function startServer(options: StartServerOptions) {
  const { config, db, logger, mode, staticAssets, version } = options;

  const resolveVersion = (): Promise<string> => {
    if (version) return Promise.resolve(version);
    return readAppVersion();
  };

  const server = Bun.serve({
    fetch(req) {
      if (staticAssets) {
        return serveStaticAsset(new URL(req.url).pathname, staticAssets);
      }
      return new Response("Frontend is served by Vite dev server on :5173", { status: 404 });
    },
    hostname: config.host,
    port: config.port,
    routes: {
      "/api/*": () => jsonResponse(createApiError("API route not found", 404), { mode, status: 404 }),
      "/api/meta": {
        GET: withErrorHandler(
          async () => {
            const resolvedVersion = await resolveVersion();
            return handleMeta(mode, resolvedVersion, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/models": {
        GET: withErrorHandler(
          async (req) => {
            const { handleListModels } = await import("./routes/models/list");
            return handleListModels(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        POST: withErrorHandler(
          async (req) => {
            const { handleCreateModel } = await import("./routes/models/create");
            return handleCreateModel(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/models/:id": {
        DELETE: withErrorHandler(
          async (req) => {
            const { handleDeleteModel } = await import("./routes/models/delete");
            return handleDeleteModel(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        GET: withErrorHandler(
          async (req) => {
            const { handleGetModel } = await import("./routes/models/get");
            return handleGetModel(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        PATCH: withErrorHandler(
          async (req) => {
            const { handleUpdateModel } = await import("./routes/models/update");
            return handleUpdateModel(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/models/test": {
        POST: withErrorHandler(
          async (req) => {
            const { handleTestModelConfig } = await import("./routes/models/test");
            return handleTestModelConfig(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects": {
        GET: withErrorHandler(
          async (req) => {
            const { handleListProjects } = await import("./routes/projects/list");
            return handleListProjects(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        POST: withErrorHandler(
          async (req) => {
            const { handleCreateProject } = await import("./routes/projects/create");
            return handleCreateProject(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects/:id": {
        DELETE: withErrorHandler(
          async (req) => {
            const { handleDeleteProject } = await import("./routes/projects/delete");
            return handleDeleteProject(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        GET: withErrorHandler(
          async (req) => {
            const { handleGetProject } = await import("./routes/projects/get");
            return handleGetProject(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        PATCH: withErrorHandler(
          async (req) => {
            const { handleUpdateProject } = await import("./routes/projects/update");
            return handleUpdateProject(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects/:id/archive": {
        POST: withErrorHandler(
          async (req) => {
            const { handleArchiveProject } = await import("./routes/projects/archive");
            return handleArchiveProject(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects/:id/chat": {
        POST: withErrorHandler(
          async (req) => {
            const { handleSendChat } = await import("./routes/chat/send");
            return handleSendChat(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects/:id/conversations": {
        GET: withErrorHandler(
          async (req) => {
            const { handleListConversations } = await import("./routes/chat/list");
            return handleListConversations(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        POST: withErrorHandler(
          async (req) => {
            const { handleCreateConversation } = await import("./routes/chat/create");
            return handleCreateConversation(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects/:id/conversations/:cid": {
        DELETE: withErrorHandler(
          async (req) => {
            const { handleDeleteConversation } = await import("./routes/chat/delete");
            return handleDeleteConversation(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        GET: withErrorHandler(
          async (req) => {
            const { handleGetConversation } = await import("./routes/chat/get");
            return handleGetConversation(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        PATCH: withErrorHandler(
          async (req) => {
            const { handleUpdateConversation } = await import("./routes/chat/update");
            return handleUpdateConversation(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects/:id/conversations/:cid/messages": {
        GET: withErrorHandler(
          async (req) => {
            const { handleListMessages } = await import("./routes/chat/messages");
            return handleListMessages(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects/:id/materials": {
        GET: withErrorHandler(
          async (req) => {
            const { handleListMaterials } = await import("./routes/materials/list");
            return handleListMaterials(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        POST: withErrorHandler(
          async (req) => {
            const { handleCreateMaterial } = await import("./routes/materials/create");
            return handleCreateMaterial(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects/:id/materials/:mid": {
        DELETE: withErrorHandler(
          async (req) => {
            const { handleDeleteMaterial } = await import("./routes/materials/delete");
            return handleDeleteMaterial(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        GET: withErrorHandler(
          async (req) => {
            const { handleGetMaterial } = await import("./routes/materials/get");
            return handleGetMaterial(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/projects/:id/restore": {
        POST: withErrorHandler(
          async (req) => {
            const { handleRestoreProject } = await import("./routes/projects/restore");
            return handleRestoreProject(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/providers": {
        GET: withErrorHandler(
          async (req) => {
            const { handleListProviders } = await import("./routes/providers/list");
            return handleListProviders(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        POST: withErrorHandler(
          async (req) => {
            const { handleCreateProvider } = await import("./routes/providers/create");
            return handleCreateProvider(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/providers/:id": {
        DELETE: withErrorHandler(
          async (req) => {
            const { handleDeleteProvider } = await import("./routes/providers/delete");
            return handleDeleteProvider(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        GET: withErrorHandler(
          async (req) => {
            const { handleGetProvider } = await import("./routes/providers/get");
            return handleGetProvider(req, db, mode, logger);
          },
          mode,
          logger,
        ),
        PATCH: withErrorHandler(
          async (req) => {
            const { handleUpdateProvider } = await import("./routes/providers/update");
            return handleUpdateProvider(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/providers/options": {
        GET: withErrorHandler(
          async () => {
            const { handleListProviderOptions } = await import("./routes/providers/options");
            return handleListProviderOptions(db, mode, logger);
          },
          mode,
          logger,
        ),
      },
      "/api/providers/test": {
        POST: withErrorHandler(
          async (req) => {
            const { handleTestProviderConfig } = await import("./routes/providers/test");
            return handleTestProviderConfig(req, db, mode, logger);
          },
          mode,
          logger,
        ),
      },
    },
  });

  logger.info({ host: config.host, port: config.port, url: server.url.toString() }, "服务启动");

  return server;
}