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* @fileoverview European Parliament API Client – Facade
*
* Thin facade that delegates every public method to a bounded-context
* sub-client while keeping all public method signatures identical.
* All sub-clients share the same LRU cache and rate-limiter bucket.
*
* **Architecture:** Facade pattern over 8 domain sub-clients:
* MEPClient · PlenaryClient · VotingClient · CommitteeClient ·
* DocumentClient · LegislativeClient · QuestionClient · VocabularyClient
*
* **Intelligence Perspective:** Primary OSINT data collection interface—implements
* rate-limited, cached access to all EP datasets for intelligence product generation.
*
* **Business Perspective:** Core API client powering all data products—reliability,
* caching, and rate limiting directly impact SLA commitments and customer experience.
*
* **Marketing Perspective:** Client performance metrics (cache hit rate, response time)
* serve as key technical differentiators in developer marketing materials.
*
* **ISMS Policies:**
* - SC-002 (Secure Coding Standards)
* - PE-001 (Performance Standards)
* - AU-002 (Audit Logging and Monitoring)
* - DP-001 (Data Protection and GDPR Compliance)
*
* @see https://github.com/Hack23/ISMS-PUBLIC/blob/main/Secure_Development_Policy.md
* @module clients/europeanParliamentClient
*/
import { LRUCache } from 'lru-cache';
import { RateLimiter } from '../utils/rateLimiter.js';
import type {
MEP,
MEPDetails,
PlenarySession,
VotingRecord,
LegislativeDocument,
Committee,
ParliamentaryQuestion,
PaginatedResponse,
Speech,
Procedure,
AdoptedText,
EPEvent,
MeetingActivity,
MEPDeclaration,
} from '../types/europeanParliament.js';
// Re-export infrastructure types/constants so existing consumers keep working.
export {
APIError,
DEFAULT_EP_API_BASE_URL,
DEFAULT_REQUEST_TIMEOUT_MS,
DEFAULT_RETRY_ENABLED,
DEFAULT_MAX_RETRIES,
DEFAULT_RETRY_BASE_DELAY_MS,
DEFAULT_RETRY_MAX_DELAY_MS,
DEFAULT_CACHE_TTL_MS,
DEFAULT_MAX_CACHE_SIZE,
DEFAULT_RATE_LIMIT_TOKENS,
DEFAULT_RATE_LIMIT_INTERVAL,
DEFAULT_MAX_RESPONSE_BYTES,
} from './ep/baseClient.js';
export type { EPClientConfig } from './ep/baseClient.js';
import {
DEFAULT_EP_API_BASE_URL,
DEFAULT_REQUEST_TIMEOUT_MS,
DEFAULT_RETRY_ENABLED,
DEFAULT_MAX_RETRIES,
DEFAULT_CACHE_TTL_MS,
DEFAULT_MAX_CACHE_SIZE,
DEFAULT_RATE_LIMIT_TOKENS,
DEFAULT_RATE_LIMIT_INTERVAL,
DEFAULT_MAX_RESPONSE_BYTES,
validateApiUrl,
type EPClientConfig,
type EPSharedResources,
} from './ep/baseClient.js';
export { validateApiUrl };
import {
MEPClient,
PlenaryClient,
VotingClient,
CommitteeClient,
DocumentClient,
LegislativeClient,
QuestionClient,
VocabularyClient,
} from './ep/index.js';
// ─── Facade ───────────────────────────────────────────────────────────────────
/**
* European Parliament API Client.
*
* Provides type-safe, high-performance access to the European Parliament Open
* Data Portal with comprehensive caching, rate limiting, and GDPR-compliant
* audit logging.
*
* **Architecture Note:** This class is a thin facade; all logic lives in the
* bounded-context sub-clients under `src/clients/ep/`. The facade owns the
* shared LRU cache and rate-limiter and passes them to every sub-client so
* they all operate within the same resource budget.
*
* **Performance Targets:**
* - P50 latency: <100ms (cached responses)
* - P95 latency: <200ms (cached responses)
* - P99 latency: <2000ms (uncached API calls)
*
* **Features:**
* - LRU caching with 15-minute TTL (500 entry max)
* - Token bucket rate limiting (100 requests/minute)
* - GDPR Article 30 compliant audit logging
* - Automatic JSON-LD to internal format transformation
* - Type-safe API with branded types
*
* **ISMS Policy Compliance:**
* - SC-002: Secure coding with input validation and error handling
* - PE-001: Performance monitoring and optimization (<200ms P95)
* - AU-002: Comprehensive audit logging for GDPR compliance
* - DP-001: Data protection and privacy by design
*
* @example
* ```typescript
* const client = new EuropeanParliamentClient();
* const meps = await client.getMEPs({ country: 'SE', limit: 20 });
* console.log(`Found ${meps.total} Swedish MEPs`);
* ```
*
* @security
* - All personal data access is audit logged per GDPR Article 30
* - Rate limiting prevents API abuse and DoS attacks
* - No credentials stored (EP API is public)
* - Cache entries sanitized to prevent injection attacks
* - TLS 1.3 enforced for all API communications
*
* @class
* @public
* @see https://data.europarl.europa.eu/api/v2/ - EP Open Data Portal API
* @see https://github.com/Hack23/ISMS-PUBLIC/blob/main/Secure_Development_Policy.md
* @see https://gdpr-info.eu/art-30-gdpr/ - GDPR Article 30
*/
export class EuropeanParliamentClient {
// ─── Sub-clients (package-private for testability) ──────────────────────
private readonly mepClient: MEPClient;
private readonly plenaryClient: PlenaryClient;
private readonly votingClient: VotingClient;
private readonly committeeClient: CommitteeClient;
private readonly documentClient: DocumentClient;
private readonly legislativeClient: LegislativeClient;
private readonly questionClient: QuestionClient;
private readonly vocabularyClient: VocabularyClient;
/**
* Creates a new European Parliament API client.
*
* Builds shared LRU cache and rate-limiter, then wires all sub-clients
* to use them so the whole facade operates within one resource budget.
*
* @param config - Optional client configuration
*/
constructor(config: EPClientConfig = {}) {
const shared = EuropeanParliamentClient.buildShared(config);
this.mepClient = new MEPClient({}, shared);
this.plenaryClient = new PlenaryClient({}, shared);
this.votingClient = new VotingClient({}, shared);
this.committeeClient = new CommitteeClient({}, shared);
this.documentClient = new DocumentClient({}, shared);
this.legislativeClient = new LegislativeClient({}, shared);
this.questionClient = new QuestionClient({}, shared);
this.vocabularyClient = new VocabularyClient({}, shared);
}
/**
* Builds the shared resources object that is passed to all sub-clients.
* Extracted to keep the constructor complexity within ESLint limits.
*
* @param config - Client configuration options
* @returns Shared resources for all EP sub-clients
* @private
*/
private static buildShared(config: EPClientConfig): EPSharedResources {
const sharedCache = new LRUCache<string, Record<string, unknown>>({
max: config.maxCacheSize ?? DEFAULT_MAX_CACHE_SIZE,
ttl: config.cacheTTL ?? DEFAULT_CACHE_TTL_MS,
allowStale: false,
updateAgeOnGet: true,
});
const sharedRateLimiter =
config.rateLimiter ??
new RateLimiter({
tokensPerInterval: DEFAULT_RATE_LIMIT_TOKENS,
interval: DEFAULT_RATE_LIMIT_INTERVAL,
});
const rawBaseURL = config.baseURL ?? DEFAULT_EP_API_BASE_URL;
// Validate baseURL to prevent SSRF (same rules as EP_API_URL env var)
validateApiUrl(rawBaseURL, 'config.baseURL');
// Ensure baseURL always ends with '/' so relative endpoints resolve correctly
const baseURL = rawBaseURL.endsWith('/') ? rawBaseURL : `${rawBaseURL}/`;
return {
cache: sharedCache,
rateLimiter: sharedRateLimiter,
baseURL,
timeoutMs: config.timeoutMs ?? DEFAULT_REQUEST_TIMEOUT_MS,
enableRetry: config.enableRetry ?? DEFAULT_RETRY_ENABLED,
maxRetries: config.maxRetries ?? DEFAULT_MAX_RETRIES,
maxResponseBytes: config.maxResponseBytes ?? DEFAULT_MAX_RESPONSE_BYTES,
cacheCounters: { hits: 0, misses: 0 },
};
}
// ─── Cache management ────────────────────────────────────────────────────
/**
* Clears all entries from the LRU cache.
*
* @example
* ```typescript
* client.clearCache();
* const freshData = await client.getMEPs({ country: 'SE' });
* ```
* @public
*/
clearCache(): void {
// Delegating to any sub-client clears the shared cache
this.mepClient.clearCache();
}
/**
* Returns cache statistics for monitoring and debugging.
*
* @returns `{ size, maxSize, hitRate, hits, misses }`
* @public
*/
getCacheStats(): { size: number; maxSize: number; hitRate: number; hits: number; misses: number } {
return this.mepClient.getCacheStats();
}
// ─── MEP endpoints ────────────────────────────────────────────────────────
/**
* Retrieves Members of the European Parliament with filtering and pagination.
*
* @param params - country, group, committee, active, limit, offset
* @returns Paginated MEP list
* @security Personal data access logged per GDPR Article 30
* @performance Cached: <100ms P50, <200ms P95. Uncached: <2s P99
* @see https://data.europarl.europa.eu/api/v2/meps
*/
async getMEPs(params: {
country?: string;
group?: string;
committee?: string;
active?: boolean;
limit?: number;
offset?: number;
}): Promise<PaginatedResponse<MEP>> {
return this.mepClient.getMEPs(params);
}
/**
* 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
* @performance Cached: <100ms P50, <200ms P95. Uncached: <2s P99
* @see https://data.europarl.europa.eu/api/v2/meps/{id}
*/
async getMEPDetails(id: string): Promise<MEPDetails> {
return this.mepClient.getMEPDetails(id);
}
/**
* 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>> {
return this.mepClient.getCurrentMEPs(params);
}
/**
* 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>> {
return this.mepClient.getIncomingMEPs(params);
}
/**
* 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>> {
return this.mepClient.getOutgoingMEPs(params);
}
/**
* 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>> {
return this.mepClient.getHomonymMEPs(params);
}
/**
* 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>> {
return this.mepClient.getMEPDeclarations(params);
}
/**
* 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> {
return this.mepClient.getMEPDeclarationById(docId);
}
// ─── Plenary / meeting endpoints ─────────────────────────────────────────
/**
* Retrieves plenary sessions with date and location filtering.
*
* @param params - dateFrom, dateTo, location, limit, offset
* @returns Paginated plenary session list
* @performance Cached: <100ms P50, <200ms P95. Uncached: <2s P99
* @see https://data.europarl.europa.eu/api/v2/meetings
*/
async getPlenarySessions(params: {
dateFrom?: string;
dateTo?: string;
location?: string;
limit?: number;
offset?: number;
}): Promise<PaginatedResponse<PlenarySession>> {
return this.plenaryClient.getPlenarySessions(params);
}
/**
* Returns activities linked to a specific meeting (plenary sitting).
* **EP API Endpoint:** `GET /meetings/{sitting-id}/activities`
*/
async getMeetingActivities(
sittingId: string,
params: { limit?: number; offset?: number } = {}
): Promise<PaginatedResponse<MeetingActivity>> {
return this.plenaryClient.getMeetingActivities(sittingId, params);
}
/**
* Returns decisions made in a specific meeting (plenary sitting).
* **EP API Endpoint:** `GET /meetings/{sitting-id}/decisions`
*/
async getMeetingDecisions(
sittingId: string,
params: { limit?: number; offset?: number } = {}
): Promise<PaginatedResponse<LegislativeDocument>> {
return this.plenaryClient.getMeetingDecisions(sittingId, params);
}
/**
* Returns foreseen activities linked to a specific meeting.
* **EP API Endpoint:** `GET /meetings/{sitting-id}/foreseen-activities`
*/
async getMeetingForeseenActivities(
sittingId: string,
params: { limit?: number; offset?: number } = {}
): Promise<PaginatedResponse<MeetingActivity>> {
return this.plenaryClient.getMeetingForeseenActivities(sittingId, params);
}
/**
* Returns plenary session documents for a specific meeting.
* **EP API Endpoint:** `GET /meetings/{sitting-id}/plenary-session-documents`
*/
async getMeetingPlenarySessionDocuments(
sittingId: string,
params: { limit?: number; offset?: number } = {}
): Promise<PaginatedResponse<LegislativeDocument>> {
return this.plenaryClient.getMeetingPlenarySessionDocuments(sittingId, params);
}
/**
* Returns plenary session document items for a specific meeting.
* **EP API Endpoint:** `GET /meetings/{sitting-id}/plenary-session-document-items`
*/
async getMeetingPlenarySessionDocumentItems(
sittingId: string,
params: { limit?: number; offset?: number } = {}
): Promise<PaginatedResponse<LegislativeDocument>> {
return this.plenaryClient.getMeetingPlenarySessionDocumentItems(sittingId, params);
}
/**
* Returns a single EP meeting by ID.
* **EP API Endpoint:** `GET /meetings/{event-id}`
*/
async getMeetingById(eventId: string): Promise<PlenarySession> {
return this.plenaryClient.getMeetingById(eventId);
}
/**
* Returns EP events (hearings, conferences, etc.).
* **EP API Endpoint:** `GET /events`
*/
async getEvents(params: {
dateFrom?: string;
dateTo?: string;
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<EPEvent>> {
return this.plenaryClient.getEvents(params);
}
/**
* Returns a single EP event by ID.
* **EP API Endpoint:** `GET /events/{event-id}`
*/
async getEventById(eventId: string): Promise<EPEvent> {
return this.plenaryClient.getEventById(eventId);
}
// ─── Voting / speech endpoints ────────────────────────────────────────────
/**
* Retrieves voting records with filtering by session, topic, and date.
*
* @param params - sessionId, topic, dateFrom, dateTo, limit, offset
* @param params.mepId - **Deprecated / ignored.** The EP API returns only aggregate
* vote counts; per-MEP vote positions are not available from this endpoint.
* @returns Paginated voting records list
* @security Audit logged per GDPR Article 30
* @performance Cached: <100ms P50, <200ms P95. Uncached: <2s P99
* @see https://data.europarl.europa.eu/api/v2/meetings/{sitting-id}/vote-results
*/
async getVotingRecords(params: {
sessionId?: string;
/** @deprecated Ignored; this endpoint only returns aggregate vote counts, not per-MEP positions. */
mepId?: string;
topic?: string;
dateFrom?: string;
dateTo?: string;
limit?: number;
offset?: number;
}): Promise<PaginatedResponse<VotingRecord>> {
return this.votingClient.getVotingRecords(params);
}
/**
* Returns plenary speeches.
* **EP API Endpoint:** `GET /speeches`
*/
async getSpeeches(params: {
dateFrom?: string;
dateTo?: string;
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<Speech>> {
return this.votingClient.getSpeeches(params);
}
/**
* Returns a single speech by ID.
* **EP API Endpoint:** `GET /speeches/{speech-id}`
*/
async getSpeechById(speechId: string): Promise<Speech> {
return this.votingClient.getSpeechById(speechId);
}
// ─── Committee endpoints ──────────────────────────────────────────────────
/**
* Retrieves committee (corporate body) information by ID or abbreviation.
*
* @param params - id or abbreviation
* @returns Committee information
* @security Audit logged per GDPR Article 30
* @performance Cached: <100ms P50, <200ms P95. Uncached: <2s P99
* @see https://data.europarl.europa.eu/api/v2/corporate-bodies
*/
async getCommitteeInfo(params: {
id?: string;
abbreviation?: string;
}): Promise<Committee> {
return this.committeeClient.getCommitteeInfo(params);
}
/**
* Returns the list of all current EP Corporate Bodies for today's date.
* **EP API Endpoint:** `GET /corporate-bodies/show-current`
*/
async getCurrentCorporateBodies(params: {
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<Committee>> {
return this.committeeClient.getCurrentCorporateBodies(params);
}
// ─── Document endpoints ───────────────────────────────────────────────────
/**
* Searches legislative documents by keyword, type, date, and committee.
*
* @param params - keyword, documentType, dateFrom, dateTo, committee, limit, offset
* @returns Paginated legislative documents list
* @security Audit logged per GDPR Article 30
* @performance Cached: <100ms P50, <200ms P95. Uncached: <2s P99
* @see https://data.europarl.europa.eu/api/v2/documents
*/
async searchDocuments(params: {
keyword: string;
documentType?: string;
dateFrom?: string;
dateTo?: string;
committee?: string;
limit?: number;
offset?: number;
}): Promise<PaginatedResponse<LegislativeDocument>> {
return this.documentClient.searchDocuments(params);
}
/**
* Returns plenary documents.
* **EP API Endpoint:** `GET /plenary-documents`
*/
async getPlenaryDocuments(params: {
year?: number;
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<LegislativeDocument>> {
return this.documentClient.getPlenaryDocuments(params);
}
/**
* Returns committee documents.
* **EP API Endpoint:** `GET /committee-documents`
*/
async getCommitteeDocuments(params: {
year?: number;
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<LegislativeDocument>> {
return this.documentClient.getCommitteeDocuments(params);
}
/**
* Returns plenary session documents.
* **EP API Endpoint:** `GET /plenary-session-documents`
*/
async getPlenarySessionDocuments(params: {
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<LegislativeDocument>> {
return this.documentClient.getPlenarySessionDocuments(params);
}
/**
* Returns all Plenary Session Document Items.
* **EP API Endpoint:** `GET /plenary-session-documents-items`
*/
async getPlenarySessionDocumentItems(params: {
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<LegislativeDocument>> {
return this.documentClient.getPlenarySessionDocumentItems(params);
}
/**
* Returns all External Documents.
* **EP API Endpoint:** `GET /external-documents`
*/
async getExternalDocuments(params: {
year?: number;
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<LegislativeDocument>> {
return this.documentClient.getExternalDocuments(params);
}
/**
* Returns a single document by ID.
* **EP API Endpoint:** `GET /documents/{doc-id}`
*/
async getDocumentById(docId: string): Promise<LegislativeDocument> {
return this.documentClient.getDocumentById(docId);
}
/**
* Returns a single plenary document by ID.
* **EP API Endpoint:** `GET /plenary-documents/{doc-id}`
*/
async getPlenaryDocumentById(docId: string): Promise<LegislativeDocument> {
return this.documentClient.getPlenaryDocumentById(docId);
}
/**
* Returns a single plenary session document by ID.
* **EP API Endpoint:** `GET /plenary-session-documents/{doc-id}`
*/
async getPlenarySessionDocumentById(docId: string): Promise<LegislativeDocument> {
return this.documentClient.getPlenarySessionDocumentById(docId);
}
/**
* Returns a single committee document by ID.
* **EP API Endpoint:** `GET /committee-documents/{doc-id}`
*/
async getCommitteeDocumentById(docId: string): Promise<LegislativeDocument> {
return this.documentClient.getCommitteeDocumentById(docId);
}
/**
* Returns a single external document by ID.
* **EP API Endpoint:** `GET /external-documents/{doc-id}`
*/
async getExternalDocumentById(docId: string): Promise<LegislativeDocument> {
return this.documentClient.getExternalDocumentById(docId);
}
// ─── Legislative endpoints ────────────────────────────────────────────────
/**
* Returns legislative procedures.
* **EP API Endpoint:** `GET /procedures`
*/
async getProcedures(params: {
year?: number;
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<Procedure>> {
return this.legislativeClient.getProcedures(params);
}
/**
* Returns a single procedure by ID.
* **EP API Endpoint:** `GET /procedures/{process-id}`
* @throws {APIError} When the procedure is not found (404)
*/
async getProcedureById(processId: string): Promise<Procedure> {
return this.legislativeClient.getProcedureById(processId);
}
/**
* Returns events linked to a procedure.
* **EP API Endpoint:** `GET /procedures/{process-id}/events`
*/
async getProcedureEvents(
processId: string,
params: { limit?: number; offset?: number } = {}
): Promise<PaginatedResponse<EPEvent>> {
return this.legislativeClient.getProcedureEvents(processId, params);
}
/**
* Returns adopted texts.
* **EP API Endpoint:** `GET /adopted-texts`
*/
async getAdoptedTexts(params: {
year?: number;
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<AdoptedText>> {
return this.legislativeClient.getAdoptedTexts(params);
}
/**
* Returns a single adopted text by document ID.
* **EP API Endpoint:** `GET /adopted-texts/{doc-id}`
*/
async getAdoptedTextById(docId: string): Promise<AdoptedText> {
return this.legislativeClient.getAdoptedTextById(docId);
}
// ─── Parliamentary question endpoints ────────────────────────────────────
/**
* Retrieves parliamentary questions with filtering by type, author, and status.
*
* @param params - type, author, topic, status, dateFrom, dateTo, limit, offset
* @returns Paginated parliamentary questions list
* @security Audit logged per GDPR Article 30
* @performance Cached: <100ms P50, <200ms P95. Uncached: <2s P99
* @see https://data.europarl.europa.eu/api/v2/parliamentary-questions
*/
async getParliamentaryQuestions(params: {
type?: 'WRITTEN' | 'ORAL';
author?: string;
topic?: string;
status?: 'PENDING' | 'ANSWERED';
dateFrom?: string;
dateTo?: string;
limit?: number;
offset?: number;
}): Promise<PaginatedResponse<ParliamentaryQuestion>> {
return this.questionClient.getParliamentaryQuestions(params);
}
/**
* Returns a single parliamentary question by document ID.
* **EP API Endpoint:** `GET /parliamentary-questions/{doc-id}`
*/
async getParliamentaryQuestionById(
docId: string
): Promise<ParliamentaryQuestion> {
return this.questionClient.getParliamentaryQuestionById(docId);
}
// ─── Vocabulary endpoints ─────────────────────────────────────────────────
/**
* Returns EP controlled vocabularies.
* **EP API Endpoint:** `GET /controlled-vocabularies`
*/
async getControlledVocabularies(params: {
limit?: number;
offset?: number;
} = {}): Promise<PaginatedResponse<Record<string, unknown>>> {
return this.vocabularyClient.getControlledVocabularies(params);
}
/**
* Returns a single EP Controlled Vocabulary by ID.
* **EP API Endpoint:** `GET /controlled-vocabularies/{voc-id}`
*/
async getControlledVocabularyById(
vocId: string
): Promise<Record<string, unknown>> {
return this.vocabularyClient.getControlledVocabularyById(vocId);
}
}
// ─── Singleton ────────────────────────────────────────────────────────────────
/**
* Singleton instance of European Parliament API client for global use.
*
* Pre-configured with defaults (15 min cache, 100 req/min rate limit).
* Recommended for most use cases to share cache and rate limiter across
* the application.
*
* **Environment Variables:**
* - `EP_API_URL`: Override base API URL
* - `EP_REQUEST_TIMEOUT_MS`: Override request timeout in milliseconds (default: 10000)
*
* @example
* ```typescript
* import { epClient } from './clients/europeanParliamentClient.js';
* const meps = await epClient.getMEPs({ country: 'SE' });
* ```
*
* @public
* @see {@link EuropeanParliamentClient}
*/
export const epClient = new EuropeanParliamentClient({
baseURL: ((): string => {
const raw = process.env['EP_API_URL'];
Iif (typeof raw === 'string') {
const trimmed = raw.trim();
if (trimmed.length > 0) {
const withSlash = trimmed.endsWith('/') ? trimmed : `${trimmed}/`;
return validateApiUrl(withSlash);
}
}
return DEFAULT_EP_API_BASE_URL;
})(),
timeoutMs: ((): number => {
const raw = process.env['EP_REQUEST_TIMEOUT_MS'];
Iif (typeof raw === 'string' && raw.trim().length > 0) {
const parsed = Number.parseInt(raw, 10);
if (Number.isFinite(parsed) && parsed > 0) return parsed;
}
return DEFAULT_REQUEST_TIMEOUT_MS;
})(),
});
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