import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { messagingApi } from "@line/bot-sdk";
import {
  createErrorResponse,
  createSuccessResponse,
} from "../common/response.js";
import { AbstractTool } from "./AbstractTool.js";
import { textMessageSchema } from "../common/schema/textMessage.js";

export default class BroadcastTextMessage extends AbstractTool {
  private client: messagingApi.MessagingApiClient;

  constructor(client: messagingApi.MessagingApiClient) {
    super();
    this.client = client;
  }

  register(server: McpServer) {
    server.registerTool(
      "broadcast_text_message",
      {
        title: "Broadcast Text Message",
        description:
          "Broadcast a simple text message via LINE to all users who have followed your LINE Official Account. Use this for sending " +
          "plain text messages without formatting. Please be aware that this message will be sent to all users.",
        inputSchema: {
          message: textMessageSchema,
        },
        annotations: {
          destructiveHint: true,
        },
      },
      async ({ message }) => {
        try {
          const response = await this.client.broadcast({
            messages: [message as unknown as messagingApi.Message],
          });
          return createSuccessResponse(response);
        } catch (error: unknown) {
          return createErrorResponse(
            `Failed to broadcast message: ${error instanceof Error ? error.message : String(error)}`,
          );
        }
      },
    );
  }
}
