/**
 * Erreurs metier typees pour le bridge.
 * Chaque erreur a un code stable + statut HTTP + details serializables.
 */

export type ErrorCode =
  | 'AUTH_REQUIRED'
  | 'AUTH_INVALID'
  | 'FORBIDDEN'
  | 'FORBIDDEN_SCOPE'
  | 'NOT_FOUND'
  | 'VALIDATION_ERROR'
  | 'RG_VIOLATION'
  | 'CONFLICT'
  | 'RATE_LIMITED'
  | 'BASEROW_UNAVAILABLE'
  | 'DOCMOST_UNAVAILABLE'
  | 'INTERNAL';

export class BridgeError extends Error {
  constructor(
    public readonly code: ErrorCode,
    public readonly status: number,
    message: string,
    public readonly details?: Record<string, unknown>,
  ) {
    super(message);
    this.name = 'BridgeError';
  }

  toJSON() {
    return {
      error: {
        code: this.code,
        message: this.message,
        ...(this.details ? { details: this.details } : {}),
      },
    };
  }
}

export const errors = {
  authRequired: () => new BridgeError('AUTH_REQUIRED', 401, 'Token absent'),
  authInvalid: () => new BridgeError('AUTH_INVALID', 401, 'Token invalide'),
  forbidden: (scope: string) =>
    new BridgeError('FORBIDDEN_SCOPE', 403, `Scope requis : ${scope}`, { scope }),
  forbiddenIdentity: (reason: string, details?: Record<string, unknown>) =>
    new BridgeError('FORBIDDEN', 403, reason, details),
  notFound: (entity: string, id: string | number) =>
    new BridgeError('NOT_FOUND', 404, `${entity} introuvable`, { entity, id }),
  validation: (issues: unknown) =>
    new BridgeError('VALIDATION_ERROR', 400, 'Body invalide', { issues }),
  rgViolation: (rule: string, message: string, details?: Record<string, unknown>) =>
    new BridgeError('RG_VIOLATION', 422, message, { rule, ...details }),
  conflict: (message: string, details?: Record<string, unknown>) =>
    new BridgeError('CONFLICT', 409, message, details),
  rateLimited: (retryAfter: number) =>
    new BridgeError('RATE_LIMITED', 429, 'Too many requests', { retry_after: retryAfter }),
  baserowDown: () => new BridgeError('BASEROW_UNAVAILABLE', 502, 'Baserow API unreachable'),
  docmostDown: () => new BridgeError('DOCMOST_UNAVAILABLE', 502, 'Docmost API unreachable'),
  internal: (message: string) => new BridgeError('INTERNAL', 500, message),
};