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// SPDX-License-Identifier: Apache-2.0
/**
* @module Utils/ValidateEPAPI
* @description Validates that the European Parliament v2 API returns real data
* for committee endpoints. Can be run standalone as a pre-flight check or
* imported as a library for integration tests.
*
* Usage:
* npx tsx src/utils/validate-ep-api.ts
* npx tsx src/utils/validate-ep-api.ts --committees=ENVI,ECON
*/
import { resolve } from 'node:path';
import { pathToFileURL } from 'node:url';
/** Base URL for the EP Open Data Portal v2 API */
const EP_API_V2_BASE = 'https://data.europarl.europa.eu/api/v2';
/** Default timeout for API requests (ms) */
const REQUEST_TIMEOUT_MS = 20_000;
/** Default committees to validate */
const DEFAULT_COMMITTEES = ['ENVI', 'ECON', 'AFET', 'LIBE', 'AGRI'] as const;
/** Shape of a corporate body item from the EP v2 API */
interface EPCorporateBodyItem {
id?: string;
label?: string;
prefLabel?: Record<string, string>;
altLabel?: Record<string, string>;
classification?: string;
}
/** Result of validating a single committee endpoint */
export interface CommitteeValidationResult {
/** Committee abbreviation code (e.g. `"ENVI"`) */
abbreviation: string;
/** Whether the endpoint returned usable real data */
success: boolean;
/** Whether a human-readable name was found */
hasName: boolean;
/** Whether a label/abbreviation code was found */
hasLabel: boolean;
/** Whether the classification identifies a standing committee */
hasClassification: boolean;
/** English name of the committee, or null when unavailable */
name: string | null;
/** Error message when the request failed, or null on success */
error: string | null;
/** Round-trip time in milliseconds */
responseTimeMs: number;
}
/** Overall validation summary for a batch of committee checks */
export interface EPAPIValidationSummary {
/** ISO 8601 timestamp when validation was performed */
timestamp: string;
/** Base URL of the EP API that was validated */
apiBase: string;
/** Number of committees checked */
totalChecked: number;
/** Number of committees that returned valid data */
totalPassed: number;
/** Number of committees that failed validation */
totalFailed: number;
/** Per-committee validation results */
results: CommitteeValidationResult[];
/** Whether all checked committees passed validation */
allValid: boolean;
}
/**
* Validate a single committee endpoint on the EP v2 API.
*
* @param abbreviation - Committee code (e.g. `"ENVI"`)
* @returns Validation result
*/
export async function validateCommitteeEndpoint(
abbreviation: string
): Promise<CommitteeValidationResult> {
const url = `${EP_API_V2_BASE}/corporate-bodies/${encodeURIComponent(abbreviation)}?format=application%2Fld%2Bjson`;
const start = Date.now();
try {
const controller = new AbortController();
const timer = setTimeout(() => controller.abort(), REQUEST_TIMEOUT_MS);
let response: Response;
try {
response = await fetch(url, {
signal: controller.signal,
headers: { Accept: 'application/ld+json' },
});
} finally {
clearTimeout(timer);
}
const responseTimeMs = Date.now() - start;
if (!response.ok) {
return {
abbreviation,
success: false,
hasName: false,
hasLabel: false,
hasClassification: false,
name: null,
error: `HTTP ${String(response.status)}`,
responseTimeMs,
};
}
const body = (await response.json()) as { data?: EPCorporateBodyItem[] };
const items = body.data;
if (!Array.isArray(items) || items.length === 0) {
return {
abbreviation,
success: false,
hasName: false,
hasLabel: false,
hasClassification: false,
name: null,
error: 'No data items in response',
responseTimeMs,
};
}
const item = items[0];
const name = item?.prefLabel?.['en'] ?? item?.altLabel?.['en'] ?? null;
const label = item?.label ?? null;
const classification = item?.classification ?? null;
const hasName = name !== null && name.length > 0;
const hasLabel = label !== null && label.length > 0;
const hasClassification = classification?.includes('COMMITTEE') ?? false;
return {
abbreviation,
success: hasName && hasLabel && hasClassification,
hasName,
hasLabel,
hasClassification,
name,
error: null,
responseTimeMs,
};
} catch (err) {
return {
abbreviation,
success: false,
hasName: false,
hasLabel: false,
hasClassification: false,
name: null,
error: err instanceof Error ? err.message : String(err),
responseTimeMs: Date.now() - start,
};
}
}
/**
* Validate all specified committee endpoints and return a summary.
*
* @param committees - Array of committee abbreviations to validate
* @returns Validation summary
*/
export async function validateEPAPI(
committees: readonly string[] = DEFAULT_COMMITTEES
): Promise<EPAPIValidationSummary> {
const results = await Promise.all(committees.map((abbr) => validateCommitteeEndpoint(abbr)));
const totalPassed = results.filter((r) => r.success).length;
return {
timestamp: new Date().toISOString(),
apiBase: EP_API_V2_BASE,
totalChecked: results.length,
totalPassed,
totalFailed: results.length - totalPassed,
results,
allValid: totalPassed === results.length,
};
}
// ─── CLI entry point ────────────────────────────────────────────────────────
/* c8 ignore start */
async function main(): Promise<void> {
const args = process.argv.slice(2);
const committeesArg = args.find((a) => a.startsWith('--committees='));
const parsedCommittees = committeesArg
? committeesArg
.replace('--committees=', '')
.split(',')
.map((committee) => committee.trim())
.filter((committee) => committee.length > 0)
: [];
const committees = parsedCommittees.length > 0 ? parsedCommittees : [...DEFAULT_COMMITTEES];
console.log(`\n🔍 Validating EP v2 API for committees: ${committees.join(', ')}\n`);
const summary = await validateEPAPI(committees);
for (const r of summary.results) {
const icon = r.success ? '✅' : '❌';
const detail = r.success
? `${r.name} (${String(r.responseTimeMs)}ms)`
: `Error: ${r.error ?? 'unknown'} (${String(r.responseTimeMs)}ms)`;
console.log(` ${icon} ${r.abbreviation}: ${detail}`);
}
console.log(
`\n📊 Summary: ${String(summary.totalPassed)}/${String(summary.totalChecked)} passed`
);
if (!summary.allValid) {
console.error('\n❌ EP v2 API validation failed — some endpoints returned no real data');
process.exitCode = 1;
} else {
console.log('\n✅ All EP v2 API committee endpoints returned real data');
}
}
// Only run if executed directly (not imported)
if (process.argv[1] && import.meta.url === pathToFileURL(resolve(process.argv[1])).href) {
main().catch((err: unknown) => {
const message = err instanceof Error ? err.message : String(err);
console.error('Fatal error:', message);
process.exitCode = 1;
});
}
/* c8 ignore stop */
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