# All files / src/tools getOutgoingMEPs.ts

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     /**
     * MCP Tool: get_outgoing_meps
     *
     * Retrieve outgoing Members of European Parliament for the current parliamentary term.
     *
     * **Intelligence Perspective:** Enables tracking of departing MEPs, useful for
     * understanding political transitions and succession patterns.
     *
     * **Business Perspective:** Helps stakeholders prepare for political transitions
     * and identify outgoing MEPs for final engagement.
     *
     * **EP API Endpoint:** `GET /meps/show-outgoing`
     *
     * ISMS Policy: SC-002 (Input Validation), AC-003 (Least Privilege)
     */

    import { GetOutgoingMEPsSchema } from '../schemas/europeanParliament.js';
    import { epClient } from '../clients/europeanParliamentClient.js';
    import { buildToolResponse } from './shared/responseBuilder.js';
    import { ToolError } from './shared/errors.js';
    import { z } from 'zod';
    import type { ToolResult } from './shared/types.js';

    /**
     * Handles the get_outgoing_meps MCP tool request.
     *
     * Retrieves Members of European Parliament who are departing parliament during the current
     * parliamentary term. Useful for monitoring political transitions, succession analysis, and
     * identifying final-engagement opportunities with outgoing stakeholders.
     *
     * @param args - Raw tool arguments, validated against {@link GetOutgoingMEPsSchema}
     * @returns MCP tool result containing a paginated list of outgoing MEP records for the
     *   current parliamentary term
     * @throws - If `args` fails schema validation (e.g., limit out of range 1–100)
     * - If the European Parliament API is unreachable or returns an error response
     *
     * @example
     * ```typescript
     * const result = await handleGetOutgoingMEPs({ limit: 20, offset: 0 });
     * // Returns up to 20 MEPs who are leaving the current parliamentary term
     * ```
     *
     * @security - Input is validated with Zod before any API call.
     * - Personal data in responses is minimised per GDPR Article 5(1)(c).
     * - All requests are rate-limited and audit-logged per ISMS Policy AU-002.
     * @since 0.8.0
     * @see {@link getOutgoingMEPsToolMetadata} for MCP schema registration
     * @see {@link handleGetCurrentMEPs} for all currently active MEPs
     * @see {@link handleGetIncomingMEPs} for MEPs who are newly joining parliament
     */
    export async function handleGetOutgoingMEPs(args: unknown): Promise<ToolResult> {
      let params: ReturnType<typeof GetOutgoingMEPsSchema.parse>;
      try {
        params = GetOutgoingMEPsSchema.parse(args);
      } catch (error: unknown) {
        Eif (error instanceof z.ZodError) {
          const fieldErrors = error.issues.map((e) => `${e.path.join('.')}: ${e.message}`).join('; ');
          throw new ToolError({
            toolName: 'get_outgoing_meps',
            operation: 'validateInput',
            message: `Invalid parameters: ${fieldErrors}`,
            isRetryable: false,
            cause: error,
          });
        }
        throw error;
      }

      try {
        const result = await epClient.getOutgoingMEPs({
          limit: params.limit,
          offset: params.offset,
        });

        return buildToolResponse(result);
      } catch (error: unknown) {
        throw new ToolError({
          toolName: 'get_outgoing_meps',
          operation: 'fetchData',
          message: 'Failed to retrieve outgoing MEPs',
          isRetryable: true,
          cause: error,
        });
      }
    }
    /** Tool metadata for get_outgoing_meps */
    export const getOutgoingMEPsToolMetadata = {
      name: 'get_outgoing_meps',
      description:
        'Get outgoing Members of European Parliament for the current parliamentary term. Returns MEPs who are leaving parliament. Data source: European Parliament Open Data Portal.',
      inputSchema: {
        type: 'object' as const,
        properties: {
          limit: { type: 'number', description: 'Maximum results to return (1-100)', default: 50 },
          offset: { type: 'number', description: 'Pagination offset', default: 0 },
        },
      },
    };