# All files / src/clients/ep mepClient.ts

92.75% Statements 128/138
70.9% Branches 78/110
92.59% Functions 25/27
94.3% Lines 116/123

Press n or j to go to the next uncovered block, b, p or k for the previous block.

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
    163
    164
    165
    166
    167
    168
    169
    170
    171
    172
    173
    174
    175
    176
    177
    178
    179
    180
    181
    182
    183
    184
    185
    186
    187
    188
    189
    190
    191
    192
    193
    194
    195
    196
    197
    198
    199
    200
    201
    202
    203
    204
    205
    206
    207
    208
    209
    210
    211
    212
    213
    214
    215
    216
    217
    218
    219
    220
    221
    222
    223
    224
    225
    226
    227
    228
    229
    230
    231
    232
    233
    234
    235
    236
    237
    238
    239
    240
    241
    242
    243
    244
    245
    246
    247
    248
    249
    250
    251
    252
    253
    254
    255
    256
    257
    258
    259
    260
    261
    262
    263
    264
    265
    266
    267
    268
    269
    270
    271
    272
    273
    274
    275
    276
    277
    278
    279
    280
    281
    282
    283
    284
    285
    286
    287
    288
    289
    290
    291
    292
    293
    294
    295
    296
    297
    298
    299
    300
    301
    302
    303
    304
    305
    306
    307
    308
    309
    310
    311
    312
    313
    314
    315
    316
    317
    318
    319
    320
    321
    322
    323
    324
    325
    326
    327
    328
    329
    330
    331
    332
    333
    334
    335
    336
    337
    338
    339
    340
    341
    342
    343
    344
    345
    346
    347
    348
    349
    350
    351
    352
    353
    354
    355
    356
    357
    358
    359
    360
    361
    362
    363
    364
    365
    366
    367
    368
    369
    370
    371
    372
    373
    374
    375
    376
    377
    378
    379
    380
    381
    382
    383
    384
    385
    386
    387
    388
    389
    390
    391
    392
    393
    394
    395
    396
    397
    398
    399
    400
    401
    402
    403
    404
    405
    406
    407
    408
    409
    410
    411
    412
    413
    414
    415
    416
    417
    418
    419
    420
    421
    422
    423
    424
    425

    344x

    436x

    6x

    9x

    28x
    28x
    28x
    28x
    28x
    28x
    28x
    28x

    7x
    7x
    6x
    45x

    7x
    2x
    2x
    11x

    7x

    7x
    7x
    7x
    7x

    7x
    7x

    7x
    55x
    7x
    7x
    7x

    7x

    14x
    7x
    7x
    7x

    7x
    7x
    14x

    28x
    28x
    28x
    28x

    28x
    28x
    28x

    28x
    218x
    24x
    24x

    28x
    28x

    4x

    4x

    6x
    6x

    6x
    6x
    3x
    3x
    1x

    6x
    6x
    6x
    6x
    6x
    6x

    15x
    15x
    15x

    15x
    7x
    7x
    7x

    8x

    7x
    73x
    15x

    5x
    5x

    5x

    4x
    29x
    5x
    5x

    5x
    5x

    5x

    4x
    30x
    5x
    5x

    6x
    6x

    6x

    5x
    31x
    6x
    6x

    7x
    7x

    7x

    7x

    7x
    6x
    7x

    7x
    7x
    7x

    4x
    2x

    2x

    2x
    2x
    2x

     /**
     * @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';
    import { DEFAULT_TIMEOUTS } from '../../utils/timeout.js';

    /**
     * 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);
      }

      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);
      }

      /**
       * 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;
        if (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;
      }

      /** Apply optional client-side country and group filters to an MEP array. */
      private filterMEPs(
        meps: MEP[],
        country: string | undefined,
        group: string | undefined,
      ): MEP[] {
        let result = meps;
        if (country !== undefined) {
          const upper = country.toUpperCase();
          result = result.filter((m) => m.country.toUpperCase() === upper);
        }
        if (group !== undefined) {
          const normalizedGroup = group.trim().toLowerCase();
          result = result.filter(
            (m) => m.politicalGroup.trim().toLowerCase() === normalizedGroup,
          );
        }
        return result;
      }

      /** Fetch all current MEPs in paginated batches (max 100 per request). */
      private async fetchAllCurrentMEPs(): Promise<MEP[]> {
        const batchSize = 100;
        const allMeps: MEP[] = [];
        let fetchOffset = 0;
        let hasMore = true;

        while (hasMore) {
          const response = await this.get<JSONLDResponse>('meps/show-current', {
            format: 'application/ld+json',
            offset: fetchOffset,
            limit: batchSize,
          });
          const items = Array.isArray(response.data) ? response.data : [];
          const batch = items.map((item) => ({ ...this.transformMEP(item), active: true }));
          allMeps.push(...batch);
          hasMore = batch.length === batchSize;
          fetchOffset += batchSize;
        }

        return allMeps;
      }

      /** Build paginated result from filtered MEPs. */
      private paginateFiltered(
        meps: MEP[], limit: number, offset: number, filtered: boolean
      ): PaginatedResponse<MEP> {
        if (filtered) {
          const paged = meps.slice(offset, offset + limit);
          const hasMore = offset + paged.length < meps.length;
          return { data: paged, total: meps.length, limit, offset, hasMore };
        }
        const hasMore = meps.length === limit;
        const total = offset + meps.length + (hasMore ? 1 : 0);
        return { data: meps, total, limit, offset, hasMore };
      }

      /**
       * 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 limit = params.limit ?? 50;
          const offset = params.offset ?? 0;

          const apiParams = this.buildMEPParams(params);
          apiParams['limit'] = limit;
          apiParams['offset'] = offset;

          const response = await this.get<JSONLDResponse>('meps', apiParams);
          const meps = response.data.map((item) => this.transformMEP(item));
          const hasMore = meps.length === limit;
          const result: PaginatedResponse<MEP> = {
            data: meps,
            total: offset + meps.length + (hasMore ? 1 : 0),
            limit,
            offset,
            hasMore,
          };

          auditLogger.logDataAccess(action, params, result.data.length);
          return result;
        } catch (error: unknown) {
          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: unknown) {
          auditLogger.logError(
            action,
            params,
            error instanceof Error ? error.message : 'Unknown error'
          );
          throw error;
        }
      }

      /**
       * Returns all currently active MEPs for today's date.
       *
       * Unlike `getMEPs()`, this uses `GET /meps/show-current` which returns
       * `api:country-of-representation` and `api:political-group` in responses.
       * Optional `country` and `group` filters are applied client-side after fetch.
       *
       * **EP API Endpoint:** `GET /meps/show-current`
       *
       * @param params - Optional filters and pagination
       * @param params.country - ISO 3166-1 alpha-2 country code for client-side filtering
       * @param params.group - Political group identifier for client-side filtering
       * @param params.limit - Maximum results to return (default 50)
       * @param params.offset - Pagination offset (default 0)
       */
      async getCurrentMEPs(params: {
        country?: string;
        group?: string;
        limit?: number;
        offset?: number;
      } = {}): Promise<PaginatedResponse<MEP>> {
        const limit = params.limit ?? 50;
        const offset = params.offset ?? 0;
        const needsFiltering = params.country !== undefined || params.group !== undefined;

        if (needsFiltering) {
          const allMeps = await this.fetchAllCurrentMEPs();
          const filtered = this.filterMEPs(allMeps, params.country, params.group);
          return this.paginateFiltered(filtered, limit, offset, true);
        }

        const response = await this.get<JSONLDResponse>('meps/show-current', {
          format: 'application/ld+json',
          offset,
          limit,
        });

        const items = Array.isArray(response.data) ? response.data : [];
        const allMeps = items.map((item) => ({ ...this.transformMEP(item), active: true }));
        return this.paginateFiltered(allMeps, limit, offset, false);
      }

      /**
       * 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));
        const hasMore = meps.length === limit;
        return { data: meps, total: meps.length + offset + (hasMore ? 1 : 0), limit, offset, hasMore };
      }

      /**
       * 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));
        const hasMore = meps.length === limit;
        return { data: meps, total: meps.length + offset + (hasMore ? 1 : 0), limit, offset, hasMore };
      }

      /**
       * 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));
        const hasMore = meps.length === limit;
        return { data: meps, total: meps.length + offset + (hasMore ? 1 : 0), limit, offset, hasMore };
      }

      /**
       * 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);
        const hasMore = declarations.length === limit;
        return { data: declarations, total: declarations.length + offset + (hasMore ? 1 : 0), limit, offset, hasMore };
      }

      /**
       * Retrieves recently updated MEPs via the feed endpoint.
       * **EP API Endpoint:** `GET /meps/feed`
       *
       * Configurable-window feed.  Extended timeout applied for `one-month`.
       */
      async getMEPsFeed(params: {
        timeframe?: string;
        startDate?: string;
      } = {}): Promise<JSONLDResponse> {
        const minimumTimeout = params.timeframe === 'one-month'
          ? DEFAULT_TIMEOUTS.EP_FEED_SLOW_REQUEST_MS
          : undefined;
        return this.get<JSONLDResponse>('meps/feed', {
          format: 'application/ld+json',
          ...(params.timeframe !== undefined ? { timeframe: params.timeframe } : {}),
          ...(params.startDate !== undefined ? { 'start-date': params.startDate } : {}),
        }, minimumTimeout);
      }

      /**
       * Retrieves recently updated MEP declarations via the feed endpoint.
       * **EP API Endpoint:** `GET /meps-declarations/feed`
       *
       * Configurable-window feed.  Extended timeout applied for `one-month`.
       */
      async getMEPDeclarationsFeed(params: {
        timeframe?: string;
        startDate?: string;
        workType?: string;
      } = {}): Promise<JSONLDResponse> {
        const minimumTimeout = params.timeframe === 'one-month'
          ? DEFAULT_TIMEOUTS.EP_FEED_SLOW_REQUEST_MS
          : undefined;
        return this.get<JSONLDResponse>('meps-declarations/feed', {
          format: 'application/ld+json',
          ...(params.timeframe !== undefined ? { timeframe: params.timeframe } : {}),
          ...(params.startDate !== undefined ? { 'start-date': params.startDate } : {}),
          ...(params.workType !== undefined ? { 'work-type': params.workType } : {}),
        }, minimumTimeout);
      }

      /**
       * 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;
      }
    }