import type { IncomingMessage, ServerResponse } from 'node:http';

import type { ConnectionService } from '../../features/connection/index.js';

interface ServerApplyRouteDependencies {
  connection: Pick<ConnectionService, 'apply'>;
  readBody(req: IncomingMessage): Promise<Record<string, unknown>>;
  withOperation<T>(
    kind: string,
    operation: (operationRevision: number) => Promise<T>,
    options?: { expectedRevision?: unknown; profileId?: unknown; serverId?: unknown },
  ): Promise<T>;
  sendState(res: ServerResponse, extra: { profileId: string; serverId: string; selectedTag: string }): Promise<void>;
}

export function createServerApplyRoute(dependencies: ServerApplyRouteDependencies) {
  return {
    async handle(req: IncomingMessage, res: ServerResponse) {
      if (req.method !== 'POST' || req.url !== '/api/apply') return false;
      const {
        profileId = '',
        serverId = '',
        selectedTag = '',
        expectedRevision,
      } = await dependencies.readBody(req);
      const result = await dependencies.withOperation(
        'apply-server',
        (operationRevision) => dependencies.connection.apply(
          profileId,
          serverId,
          selectedTag,
          operationRevision,
        ),
        { expectedRevision, profileId, serverId },
      );
      await dependencies.sendState(res, result);
      return true;
    },
  };
}