/**
 * Sanctions Screening Service
 * Integrates with ComplyAdvantage or equivalent for sanctions and PEP screening
 */

export interface SanctionsProviderConfig {
  apiKey: string;
  apiUrl: string;
}

export interface SanctionsScreeningRequest {
  applicantId: string;
  givenName: string;
  familyName: string;
  dateOfBirth?: string;
  nationality?: string;
  address?: {
    street?: string;
    city?: string;
    region?: string;
    postalCode?: string;
    country?: string;
  };
}

export interface SanctionsScreeningResult {
  applicantId: string;
  screenedAt: string;
  sanctionsMatch: boolean;
  pepMatch: boolean;
  riskScore: number;
  matches: Array<{
    type: 'sanctions' | 'pep' | 'adverse_media';
    list: string;
    matchScore: number;
    details: string;
  }>;
  requiresEDD: boolean;
}

/**
 * ComplyAdvantage Sanctions Provider
 */
export class ComplyAdvantageSanctionsProvider {
  // @ts-expect-error - Config will be used when implementing ComplyAdvantage API integration
  private _config: SanctionsProviderConfig;
  
  constructor(config: SanctionsProviderConfig) {
    this._config = config;
  }

  /**
   * Perform sanctions screening
   */
  async screenApplicant(request: SanctionsScreeningRequest): Promise<SanctionsScreeningResult> {
    // TODO: Implement ComplyAdvantage API integration
    // const response = await fetch(`${this.config.apiUrl}/searches`, {
    //   method: 'POST',
    //   headers: {
    //     'Authorization': `Token ${this.config.apiKey}`,
    //     'Content-Type': 'application/json',
    //   },
    //   body: JSON.stringify({
    //     search_profile: 'dsb_eresidency',
    //     name: `${request.givenName} ${request.familyName}`,
    //     dob: request.dateOfBirth,
    //     country: request.nationality,
    //   }),
    // });
    // const data = await response.json();
    // return this.processScreeningResult(request.applicantId, data);

    // Placeholder implementation
    return {
      applicantId: request.applicantId,
      screenedAt: new Date().toISOString(),
      sanctionsMatch: false,
      pepMatch: false,
      riskScore: 0.1,
      matches: [],
      requiresEDD: false,
    };
  }

  /**
   * Process screening result
   * Note: This method is currently unused but will be used when implementing ComplyAdvantage API integration
   */
  // @ts-expect-error - Method will be used when implementing ComplyAdvantage API integration
  private _processScreeningResult(applicantId: string, _data: unknown): SanctionsScreeningResult {
    // TODO: Process ComplyAdvantage response
    // const result = data as ComplyAdvantageResponse;
    // return {
    //   applicantId,
    //   screenedAt: new Date().toISOString(),
    //   sanctionsMatch: result.hits.some(hit => hit.match_types.includes('sanctions')),
    //   pepMatch: result.hits.some(hit => hit.match_types.includes('pep')),
    //   riskScore: result.risk_score,
    //   matches: result.hits.map(hit => ({
    //     type: hit.match_types[0],
    //     list: hit.list,
    //     matchScore: hit.match_score,
    //     details: hit.match_details,
    //   })),
    //   requiresEDD: result.risk_score > 0.7,
    // };

    // Placeholder
    return {
      applicantId,
      screenedAt: new Date().toISOString(),
      sanctionsMatch: false,
      pepMatch: false,
      riskScore: 0.1,
      matches: [],
      requiresEDD: false,
    };
  }
}

