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* @fileoverview Committee sub-client for European Parliament API
*
* Handles committee (corporate body) information lookups including
* direct lookup, list search, and current corporate bodies.
*
* @module clients/ep/committeeClient
*/
import { auditLogger, toErrorMessage } from '../../utils/auditLogger.js';
import type {
Committee,
CommitteeMembership,
MEPMembership,
PaginatedResponse,
} from '../../types/europeanParliament.js';
import {
transformCorporateBody as _transformCorporateBody,
transformMEPMembership,
} from './transformers.js';
import {
BaseEPClient,
APIError,
type EPClientConfig,
type EPSharedResources,
type JSONLDResponse,
} from './baseClient.js';
import { DEFAULT_TIMEOUTS } from '../../utils/timeout.js';
interface MembershipRoleSummary {
member: boolean;
chair: boolean;
viceChair: boolean;
memberships: MEPMembership[];
}
interface MEPMembershipSummary extends MembershipRoleSummary {
mepId: string;
}
interface CommitteeMembershipSummary {
members: string[];
chair?: string;
viceChairs: string[];
memberships: CommitteeMembership[];
}
/**
* Sub-client for committee/corporate-body EP API endpoints.
*
* @extends BaseEPClient
* @public
*/
export class CommitteeClient extends BaseEPClient {
constructor(config: EPClientConfig = {}, shared?: EPSharedResources) {
super(config, shared);
}
private transformCorporateBody(apiData: Record<string, unknown>): Committee {
return _transformCorporateBody(apiData);
}
private extractReferenceValue(value: unknown): string {
Eif (typeof value === 'string') return value.trim();
if (Array.isArray(value)) {
for (const item of value) {
const extracted = this.extractReferenceValue(item);
if (extracted !== '') return extracted;
}
return '';
}
if (!this.isRecord(value)) return '';
for (const key of ['@id', 'id', 'identifier', 'body_id', 'value']) {
const extracted = this.extractReferenceValue(value[key]);
if (extracted !== '') return extracted;
}
return '';
}
private normalizeMEPId(mepId: unknown): string {
const normalized = this.extractReferenceValue(mepId);
if (normalized === '') return '';
if (normalized.startsWith('MEP-')) return `person/${normalized.substring(4)}`;
if (normalized.startsWith('person/')) return normalized;
if (normalized.includes('/')) {
const identifier = normalized.split('/').filter((segment) => segment !== '').pop() ?? '';
return identifier === '' ? '' : `person/${identifier}`;
}
return `person/${normalized}`;
}
private normalizeOrganizationId(value: unknown): string {
const trimmed = this.extractReferenceValue(value);
Iif (trimmed === '') return '';
const orgMarker = '/org/';
const markerIndex = trimmed.lastIndexOf(orgMarker);
Iif (markerIndex >= 0) return trimmed.substring(markerIndex + orgMarker.length);
return trimmed.startsWith('org/') ? trimmed.substring(4) : trimmed;
}
private isRecord(value: unknown): value is Record<string, unknown> {
return typeof value === 'object' && value !== null;
}
private getCommitteeFilterValue(committee: Committee): string {
const abbreviation = this.normalizeOrganizationId(committee.abbreviation);
if (abbreviation !== '' && /[A-Za-z]/.test(abbreviation)) {
return abbreviation;
}
const id = this.normalizeOrganizationId(committee.id);
if (id !== '' && /[A-Za-z]/.test(id)) {
return id;
}
return '';
}
private collectCommitteeOrganizationCandidates(
apiData: Record<string, unknown>,
committeeAbbreviation: string,
): string[] {
const candidates = new Set<string>();
const addCandidate = (value: unknown): void => {
const normalized = this.normalizeOrganizationId(value);
if (normalized !== '') candidates.add(normalized);
};
addCandidate(apiData['body_id'] ?? apiData['identifier'] ?? apiData['id']);
addCandidate(apiData['hasCurrentVersion']);
if (Array.isArray(apiData['inverse_isVersionOf'])) {
for (const item of apiData['inverse_isVersionOf']) {
addCandidate(item);
}
}
if (committeeAbbreviation !== '') addCandidate(committeeAbbreviation);
return [...candidates];
}
private enrichCommitteeMembership(
committee: Committee,
apiData: Record<string, unknown>,
abortSignal?: AbortSignal,
): Promise<Committee> {
const committeeFilter = this.getCommitteeFilterValue(committee);
const organizationCandidates = this.collectCommitteeOrganizationCandidates(
apiData,
committeeFilter,
);
if (organizationCandidates.length === 0) return Promise.resolve(committee);
return this.loadCommitteeMemberships(organizationCandidates, abortSignal)
.then((membershipSummary) => this.applyCommitteeMemberships(committee, membershipSummary));
}
private async loadCommitteeMemberships(
organizationCandidates: string[],
abortSignal?: AbortSignal,
): Promise<CommitteeMembershipSummary> {
const memberIds = new Set<string>();
const viceChairIds = new Set<string>();
const memberships = new Map<string, CommitteeMembership>();
let chairId: string | undefined;
const batchSize = 100;
let fetchOffset = 0;
for (;;) {
const response = await this.get<JSONLDResponse>('meps/show-current', {
format: 'application/ld+json',
limit: batchSize,
offset: fetchOffset,
}, undefined, abortSignal);
const meps = Array.isArray(response.data) ? response.data : [];
if (meps.length === 0) {
break;
}
const batchMemberships = await this.collectMembershipsFromBatch(
meps,
organizationCandidates,
abortSignal,
);
batchMemberships.memberIds.forEach((mepId) => memberIds.add(mepId));
batchMemberships.viceChairIds.forEach((mepId) => viceChairIds.add(mepId));
for (const membership of batchMemberships.memberships) {
memberships.set(this.getMembershipKey(membership), membership);
}
if (batchMemberships.chairId !== undefined) {
chairId = batchMemberships.chairId;
}
if (meps.length < batchSize) {
break;
}
fetchOffset += batchSize;
}
const membershipSummary: CommitteeMembershipSummary = {
members: [...memberIds],
viceChairs: [...viceChairIds],
memberships: [...memberships.values()],
};
if (chairId !== undefined) {
membershipSummary.chair = chairId;
}
return membershipSummary;
}
private async collectMembershipsFromBatch(
meps: unknown[],
organizationCandidates: string[],
abortSignal?: AbortSignal,
): Promise<{
memberIds: Set<string>;
viceChairIds: Set<string>;
chairId?: string;
memberships: CommitteeMembership[];
}> {
const memberIds = new Set<string>();
const viceChairIds = new Set<string>();
const memberships: CommitteeMembership[] = [];
let chairId: string | undefined;
const concurrency = 10;
for (let index = 0; index < meps.length; index += concurrency) {
const batch = meps.slice(index, index + concurrency);
const membershipSummaries = await Promise.all(
batch.map(async (mep) => {
if (!this.isRecord(mep)) return null;
return this.getMEPMembershipSummary(
mep,
organizationCandidates,
abortSignal,
true,
);
}),
);
for (const membershipSummary of membershipSummaries) {
if (membershipSummary === null || membershipSummary.mepId === '') continue;
if (membershipSummary.member) {
memberIds.add(membershipSummary.mepId);
}
if (membershipSummary.chair) chairId = membershipSummary.mepId;
if (membershipSummary.viceChair) viceChairIds.add(membershipSummary.mepId);
memberships.push(...membershipSummary.memberships.map((membership) => ({
...membership,
member: membershipSummary.mepId,
})));
}
}
return chairId === undefined
? { memberIds, viceChairIds, memberships }
: { memberIds, viceChairIds, chairId, memberships };
}
private async getMEPMembershipSummary(
mep: Record<string, unknown>,
organizationCandidates: string[],
abortSignal?: AbortSignal,
inferMemberFromRoster = false,
): Promise<MEPMembershipSummary> {
const mepId = this.normalizeMEPId(mep['id'] ?? mep['identifier'] ?? mep['@id']);
if (mepId === '') {
return { mepId: '', member: false, chair: false, viceChair: false, memberships: [] };
}
const inlineMembershipSummary = this.extractMembershipSummary(mep, organizationCandidates);
if (this.hasMembershipSummary(inlineMembershipSummary)) {
return { mepId, ...inlineMembershipSummary };
}
if (inferMemberFromRoster && !this.hasMembershipDetails(mep)) {
return this.resolveRosterMembershipSummary(mepId, organizationCandidates, abortSignal);
}
return this.resolveDetailMembershipSummary(mepId, organizationCandidates, abortSignal);
}
private async resolveRosterMembershipSummary(
mepId: string,
organizationCandidates: string[],
abortSignal?: AbortSignal,
): Promise<MEPMembershipSummary> {
const detailsMembershipSummary = await this.loadMEPMembershipSummaryFromDetails(
mepId,
organizationCandidates,
abortSignal,
);
if (this.hasMembershipSummary(detailsMembershipSummary)) {
return { mepId, ...detailsMembershipSummary };
}
return { mepId, member: false, chair: false, viceChair: false, memberships: [] };
}
private async resolveDetailMembershipSummary(
mepId: string,
organizationCandidates: string[],
abortSignal?: AbortSignal,
): Promise<MEPMembershipSummary> {
const detailsMembershipSummary = await this.loadMEPMembershipSummaryFromDetails(
mepId,
organizationCandidates,
abortSignal,
);
return { mepId, ...detailsMembershipSummary };
}
private async loadMEPMembershipSummaryFromDetails(
mepId: string,
organizationCandidates: string[],
abortSignal?: AbortSignal,
): Promise<MembershipRoleSummary> {
try {
const mepIdentifier = mepId.split('/').filter((segment) => segment !== '').pop() ?? mepId;
const mepDetailsResponse = await this.get<JSONLDResponse>(`meps/${mepIdentifier}`, {
format: 'application/ld+json',
}, undefined, abortSignal);
const details = Array.isArray(mepDetailsResponse.data) ? mepDetailsResponse.data[0] : undefined;
if (!this.isRecord(details)) {
return { member: false, chair: false, viceChair: false, memberships: [] };
}
return this.extractMembershipSummary(details, organizationCandidates);
} catch {
return { member: false, chair: false, viceChair: false, memberships: [] };
}
}
private hasMembershipDetails(details: Record<string, unknown>): boolean {
const memberships = Array.isArray(details['hasMembership']) ? details['hasMembership'] : [];
return memberships.length > 0;
}
private hasMembershipSummary(summary: MembershipRoleSummary): boolean {
return summary.member || summary.chair || summary.viceChair || summary.memberships.length > 0;
}
private extractMembershipSummary(
details: Record<string, unknown>,
organizationCandidates: string[],
): MembershipRoleSummary {
const memberships = Array.isArray(details['hasMembership']) ? details['hasMembership'] : [];
const summary: MembershipRoleSummary = {
member: false,
chair: false,
viceChair: false,
memberships: [],
};
for (const membership of memberships) {
if (!this.isRecord(membership)) continue;
const normalizedMembership = {
...membership,
organization: this.extractReferenceValue(membership['organization']),
role: this.extractReferenceValue(membership['role']),
membershipClassification: this.extractReferenceValue([
membership['membershipClassification'],
membership['classification'],
]),
};
if (!this.matchesCommitteeOrganization(normalizedMembership, organizationCandidates)) continue;
if (!this.isCurrentMembership(membership)) continue;
const transformedMembership = transformMEPMembership(normalizedMembership);
if (transformedMembership !== undefined) summary.memberships.push(transformedMembership);
this.applyMembershipRole(summary, this.getMembershipRoleCode(normalizedMembership));
}
return summary;
}
private applyMembershipRole(summary: MembershipRoleSummary, roleCode: string): void {
if (roleCode === 'MEMBER') {
summary.member = true;
} else if (roleCode === 'CHAIR') {
summary.member = true;
summary.chair = true;
} else if (roleCode === 'CHAIR_VICE' || roleCode === 'VICE_CHAIR') {
summary.member = true;
summary.viceChair = true;
}
}
private getMembershipKey(membership: CommitteeMembership): string {
return [
membership.member,
membership.id ?? membership.identifier ?? '',
membership.organization ?? '',
membership.role ?? '',
].join('|');
}
private isCurrentMembership(membership: Record<string, unknown>): boolean {
const period = this.isRecord(membership['memberDuring'])
? membership['memberDuring']
: undefined;
if (period === undefined) return true;
const today = new Date().toISOString().slice(0, 10);
const startDate = typeof period['startDate'] === 'string' ? period['startDate'] : undefined;
const endDate = typeof period['endDate'] === 'string' ? period['endDate'] : undefined;
return (startDate === undefined || startDate <= today)
&& (endDate === undefined || endDate >= today);
}
private matchesCommitteeOrganization(
membership: Record<string, unknown>,
organizationCandidates: string[],
): boolean {
const organization = this.extractReferenceValue(membership['organization']);
if (organization === '') return false;
const membershipClassification = this.extractReferenceValue([
membership['membershipClassification'],
membership['classification'],
]);
const normalizedClassification = this.normalizeMembershipClassificationCode(membershipClassification);
if (normalizedClassification !== '' && normalizedClassification !== 'COMMITTEE_PARLIAMENTARY_STANDING') {
return false;
}
return organizationCandidates.includes(this.normalizeOrganizationId(organization));
}
private normalizeMembershipClassificationCode(value: string): string {
const trimmed = value.trim();
if (trimmed === '') return '';
return trimmed.split('/').pop()?.toUpperCase() ?? '';
}
private getMembershipRoleCode(membership: Record<string, unknown>): string {
const role = this.extractReferenceValue(membership['role']);
return role.split('/').pop()?.toUpperCase() ?? '';
}
private applyCommitteeMemberships(
committee: Committee,
membershipSummary: CommitteeMembershipSummary,
): Committee {
const enrichedCommittee: Committee = {
...committee,
members: membershipSummary.members.length > 0 ? membershipSummary.members : committee.members,
memberships: membershipSummary.memberships,
};
if (membershipSummary.chair !== undefined) {
enrichedCommittee.chair = membershipSummary.chair;
} else if (committee.chair !== undefined) {
enrichedCommittee.chair = committee.chair;
}
if (membershipSummary.viceChairs.length > 0) {
enrichedCommittee.viceChairs = membershipSummary.viceChairs;
} else if (committee.viceChairs !== undefined) {
enrichedCommittee.viceChairs = committee.viceChairs;
} else {
enrichedCommittee.viceChairs = [];
}
return enrichedCommittee;
}
/**
* Resolves a committee by trying direct lookup then list search.
* @throws {APIError} If committee not found
* @private
*/
private async resolveCommittee(
searchTerm: string,
abortSignal?: AbortSignal,
includeMemberships = true,
): Promise<Committee> {
Eif (searchTerm !== '') {
const directResult = await this.fetchCommitteeDirectly(searchTerm, abortSignal, includeMemberships);
if (directResult !== null) return directResult;
}
const found = await this.searchCommitteeInList(searchTerm, abortSignal, includeMemberships);
if (found !== null) return found;
throw new APIError(`Committee not found: ${searchTerm || 'unknown'}`, 404);
}
/**
* Attempts a direct corporate-body lookup by ID.
* @private
*/
private async fetchCommitteeDirectly(
bodyId: string,
abortSignal?: AbortSignal,
includeMemberships = true,
): Promise<Committee | null> {
try {
const normalizedBodyId = this.normalizeOrganizationId(bodyId);
const response = await this.get<JSONLDResponse>(
`corporate-bodies/${normalizedBodyId}`,
{},
undefined,
abortSignal,
);
Eif (response.data.length > 0) {
const committee = this.transformCorporateBody(response.data[0] ?? {});
return includeMemberships
? await this.enrichCommitteeMembership(committee, response.data[0] ?? {}, abortSignal)
: committee;
}
} catch (error: unknown) {
if (error instanceof APIError && error.statusCode === 404) {
return null;
}
auditLogger.logError('get_committee_info.fetch_direct', { bodyId }, toErrorMessage(error));
throw error;
}
return null;
}
/**
* Searches the corporate-bodies list for a matching committee.
* @private
*/
private async searchCommitteeInList(
searchTerm: string,
abortSignal?: AbortSignal,
includeMemberships = true,
): Promise<Committee | null> {
const listParams: Record<string, unknown> = {
'body-classification': 'COMMITTEE_PARLIAMENTARY_STANDING',
limit: 100,
};
const response = await this.get<JSONLDResponse>('corporate-bodies', listParams, undefined, abortSignal);
for (const item of response.data) {
const committee = this.transformCorporateBody(item);
if (committee.abbreviation === searchTerm || committee.id === searchTerm) {
return includeMemberships
? await this.enrichCommitteeMembership(committee, item, abortSignal)
: committee;
}
}
return null;
}
/**
* Retrieves committee (corporate body) information by ID or abbreviation.
*
* **EP API Endpoint:** `GET /corporate-bodies/{body-id}` or `GET /corporate-bodies`
*
* @param params - id or abbreviation of the committee, with optional `abortSignal`
* @returns Committee information
* @security Audit logged per GDPR Article 30
*/
async getCommitteeInfo(params: {
id?: string;
abbreviation?: string;
abortSignal?: AbortSignal;
includeMemberships?: boolean;
}): Promise<Committee> {
const action = 'get_committee_info';
// Audit params exclude `abortSignal` (not a property we want in audit logs).
const auditParams = { id: params.id, abbreviation: params.abbreviation };
try {
const searchTerm = params.abbreviation ?? params.id ?? '';
const includeMemberships = params.includeMemberships ?? true;
const committee = await this.resolveCommittee(searchTerm, params.abortSignal, includeMemberships);
auditLogger.logDataAccess(action, auditParams, 1);
return committee;
} catch (error: unknown) {
auditLogger.logError(
action,
auditParams,
error instanceof Error ? error.message : 'Unknown error'
);
throw error;
}
}
/**
* Returns the list of all EP Corporate Bodies.
* **EP API Endpoint:** `GET /corporate-bodies`
*/
async getCorporateBodies(params: {
limit?: number;
offset?: number;
abortSignal?: AbortSignal;
} = {}): Promise<PaginatedResponse<Committee>> {
const limit = params.limit ?? 50;
const offset = params.offset ?? 0;
const response = await this.get<JSONLDResponse>(
'corporate-bodies',
{ format: 'application/ld+json', offset, limit },
undefined,
params.abortSignal,
);
const items = Array.isArray(response.data) ? response.data : [];
const bodies = items.map((item) => this.transformCorporateBody(item));
const hasMore = bodies.length === limit;
return { data: bodies, total: bodies.length + offset + (hasMore ? 1 : 0), limit, offset, hasMore };
}
/**
* Returns a single EP Corporate Body by ID.
* **EP API Endpoint:** `GET /corporate-bodies/{body-id}`
*/
async getCorporateBodyById(
bodyId: string,
options: { abortSignal?: AbortSignal; includeMemberships?: boolean } = {},
): Promise<Committee> {
const committee = await this.fetchCommitteeDirectly(
bodyId,
options.abortSignal,
options.includeMemberships ?? true,
);
if (committee === null) {
throw new APIError(`Corporate body not found: ${bodyId}`, 404);
}
return committee;
}
/**
* Retrieves recently updated corporate bodies via the feed endpoint.
* **EP API Endpoint:** `GET /corporate-bodies/feed`
*
* Fixed-window feed — no `timeframe` parameter per OpenAPI spec.
* Extended timeout applied (120 s minimum).
*/
async getCorporateBodiesFeed(options: { abortSignal?: AbortSignal } = {}): Promise<JSONLDResponse> {
return this.get<JSONLDResponse>('corporate-bodies/feed', {
format: 'application/ld+json',
}, DEFAULT_TIMEOUTS.EP_FEED_SLOW_REQUEST_MS, options.abortSignal);
}
/**
* 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;
abortSignal?: AbortSignal;
} = {}): Promise<PaginatedResponse<Committee>> {
const limit = params.limit ?? 50;
const offset = params.offset ?? 0;
const response = await this.get<JSONLDResponse>(
'corporate-bodies/show-current',
{ format: 'application/ld+json', offset, limit },
undefined,
params.abortSignal,
);
const items = Array.isArray(response.data) ? response.data : [];
const bodies = items.map((item) => this.transformCorporateBody(item));
const hasMore = bodies.length === limit;
return { data: bodies, total: bodies.length + offset + (hasMore ? 1 : 0), limit, offset, hasMore };
}
}
|