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* @fileoverview MEP sub-client for European Parliament API
*
* Handles all Member of European Parliament API calls:
* current/incoming/outgoing/homonym MEP lists, MEP details,
* and MEP financial declarations.
*
* **GDPR:** Personal data access (declarations) is audit-logged per Article 30.
*
* @module clients/ep/mepClient
*/
import { auditLogger } from '../../utils/auditLogger.js';
import type {
MEP,
MEPDetails,
MEPDeclaration,
PaginatedResponse,
} from '../../types/europeanParliament.js';
import {
transformMEP as _transformMEP,
transformMEPDetails as _transformMEPDetails,
transformMEPDeclaration as _transformMEPDeclaration,
} from './transformers.js';
import {
BaseEPClient,
APIError,
type EPClientConfig,
type EPSharedResources,
type JSONLDResponse,
} from './baseClient.js';
// ─── MEP Client ───────────────────────────────────────────────────────────────
/**
* Sub-client for MEP-related European Parliament API endpoints.
*
* Handles all MEP data fetching: active lists, individual profiles,
* incoming/outgoing/homonym lists, and financial declarations.
*
* @extends BaseEPClient
* @public
*/
export class MEPClient extends BaseEPClient {
constructor(config: EPClientConfig = {}, shared?: EPSharedResources) {
super(config, shared);
}
// ─── Transform helpers ────────────────────────────────────────────────────
private transformMEP(apiData: Record<string, unknown>): MEP {
return _transformMEP(apiData);
}
private transformMEPDetails(apiData: Record<string, unknown>): MEPDetails {
return _transformMEPDetails(apiData);
}
private transformMEPDeclaration(apiData: Record<string, unknown>): MEPDeclaration {
return _transformMEPDeclaration(apiData);
}
// ─── Private helpers ─────────────────────────────────────────────────────
/**
* Maps getMEPs params to EP API query parameters.
* @private
*/
private buildMEPParams(params: {
country?: string;
group?: string;
committee?: string;
active?: boolean;
limit?: number;
offset?: number;
}): Record<string, unknown> {
const apiParams: Record<string, unknown> = {};
if (params.limit !== undefined) apiParams['limit'] = params.limit;
Iif (params.offset !== undefined) apiParams['offset'] = params.offset;
if (params.country !== undefined) apiParams['country-code'] = params.country;
Iif (params.group !== undefined) apiParams['political-group'] = params.group;
Iif (params.committee !== undefined) apiParams['committee'] = params.committee;
Iif (params.active !== undefined) apiParams['status'] = params.active ? 'current' : 'all';
return apiParams;
}
// ─── Public methods ───────────────────────────────────────────────────────
/**
* Retrieves Members of the European Parliament with filtering and pagination.
*
* @param params - Country, group, committee, active status, limit, offset
* @returns Paginated MEP list
* @security Personal data access logged per GDPR Article 30
*/
async getMEPs(params: {
country?: string;
group?: string;
committee?: string;
active?: boolean;
limit?: number;
offset?: number;
}): Promise<PaginatedResponse<MEP>> {
const action = 'get_meps';
try {
const apiParams = this.buildMEPParams(params);
const response = await this.get<JSONLDResponse>('meps', apiParams);
const meps = response.data.map((item) => this.transformMEP(item));
const result: PaginatedResponse<MEP> = {
data: meps,
total: (params.offset ?? 0) + meps.length,
limit: params.limit ?? 50,
offset: params.offset ?? 0,
hasMore: meps.length >= (params.limit ?? 50),
};
auditLogger.logDataAccess(action, params, result.data.length);
return result;
} catch (error) {
auditLogger.logError(
action,
params,
error instanceof Error ? error.message : 'Unknown error'
);
throw error;
}
}
/**
* Retrieves detailed information about a specific MEP.
*
* Supports numeric ID ("124936"), person URI ("person/124936"),
* or MEP-prefixed ID ("MEP-124936").
*
* @param id - MEP identifier in any supported format
* @returns Detailed MEP information
* @security Personal data access logged per GDPR Article 30
*/
async getMEPDetails(id: string): Promise<MEPDetails> {
const action = 'get_mep_details';
const params = { id };
let normalizedId = id;
if (id.startsWith('MEP-')) {
normalizedId = id.substring(4);
} else if (id.startsWith('person/')) {
normalizedId = id.substring(7);
}
try {
const response = await this.get<JSONLDResponse>(`meps/${normalizedId}`, {});
Eif (response.data.length > 0) {
const mepDetails = this.transformMEPDetails(response.data[0] ?? {});
auditLogger.logDataAccess(action, params, 1);
return mepDetails;
}
throw new APIError(`MEP with ID ${id} not found`, 404);
} catch (error) {
auditLogger.logError(
action,
params,
error instanceof Error ? error.message : 'Unknown error'
);
throw error;
}
}
/**
* Returns all currently active MEPs for today's date.
* **EP API Endpoint:** `GET /meps/show-current`
*/
async getCurrentMEPs(params: {
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<MEP>> {
const limit = params.limit ?? 50;
const offset = params.offset ?? 0;
const response = await this.get<JSONLDResponse>('meps/show-current', {
format: 'application/ld+json',
offset,
limit,
});
const items = Array.isArray(response.data) ? response.data : [];
const meps = items.map((item) => this.transformMEP(item));
return { data: meps, total: meps.length + offset, limit, offset, hasMore: meps.length === limit };
}
/**
* Returns all incoming MEPs for the current parliamentary term.
* **EP API Endpoint:** `GET /meps/show-incoming`
*/
async getIncomingMEPs(params: {
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<MEP>> {
const limit = params.limit ?? 50;
const offset = params.offset ?? 0;
const response = await this.get<JSONLDResponse>('meps/show-incoming', {
format: 'application/ld+json',
offset,
limit,
});
const items = Array.isArray(response.data) ? response.data : [];
const meps = items.map((item) => this.transformMEP(item));
return { data: meps, total: meps.length + offset, limit, offset, hasMore: meps.length === limit };
}
/**
* Returns all outgoing MEPs for the current parliamentary term.
* **EP API Endpoint:** `GET /meps/show-outgoing`
*/
async getOutgoingMEPs(params: {
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<MEP>> {
const limit = params.limit ?? 50;
const offset = params.offset ?? 0;
const response = await this.get<JSONLDResponse>('meps/show-outgoing', {
format: 'application/ld+json',
offset,
limit,
});
const items = Array.isArray(response.data) ? response.data : [];
const meps = items.map((item) => this.transformMEP(item));
return { data: meps, total: meps.length + offset, limit, offset, hasMore: meps.length === limit };
}
/**
* Returns homonym MEPs for the current parliamentary term.
* **EP API Endpoint:** `GET /meps/show-homonyms`
*/
async getHomonymMEPs(params: {
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<MEP>> {
const limit = params.limit ?? 50;
const offset = params.offset ?? 0;
const response = await this.get<JSONLDResponse>('meps/show-homonyms', {
format: 'application/ld+json',
offset,
limit,
});
const items = Array.isArray(response.data) ? response.data : [];
const meps = items.map((item) => this.transformMEP(item));
return { data: meps, total: meps.length + offset, limit, offset, hasMore: meps.length === limit };
}
/**
* Returns MEP declarations of financial interests.
* **EP API Endpoint:** `GET /meps-declarations`
* @gdpr Declarations contain personal financial data – access is audit-logged
*/
async getMEPDeclarations(params: {
year?: number;
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<MEPDeclaration>> {
const limit = params.limit ?? 50;
const offset = params.offset ?? 0;
const apiParams: Record<string, unknown> = {
format: 'application/ld+json',
offset,
limit,
};
if (params.year !== undefined) apiParams['year'] = params.year;
const response = await this.get<JSONLDResponse>('meps-declarations', apiParams);
const items = Array.isArray(response.data) ? response.data : [];
const declarations = items.map((item) => this.transformMEPDeclaration(item));
auditLogger.logDataAccess('getMEPDeclarations', apiParams, declarations.length);
return { data: declarations, total: declarations.length + offset, limit, offset, hasMore: declarations.length === limit };
}
/**
* Returns a single MEP declaration by document ID.
* **EP API Endpoint:** `GET /meps-declarations/{doc-id}`
* @gdpr Declarations contain personal financial data – access is audit-logged
*/
async getMEPDeclarationById(docId: string): Promise<MEPDeclaration> {
if (docId.trim() === '') {
throw new APIError('Document ID is required', 400);
}
const response = await this.get<Record<string, unknown>>(
`meps-declarations/${docId}`,
{ format: 'application/ld+json' }
);
const declaration = this.transformMEPDeclaration(response);
auditLogger.logDataAccess('getMEPDeclarationById', { docId }, 1);
return declaration;
}
}
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