// lib/errors.ts
export type ValidationIssue = {
  path: string;
  message: string;
};

export type AppError =
  | {
      type: 'validation';
      message: string;
      issues?: ValidationIssue[];
    }
  | {
      type: 'not_found';
      message: string;
    }
  | {
      type: 'conflict';
      message: string;
    }
  | {
      type: 'unauthorized';
      message: string;
    }
  | {
      type: 'forbidden';
      message: string;
    }
  | {
      type: 'unexpected';
      message: string;
    };

export const Errors = {
  validation(message: string, issues?: ValidationIssue[]): AppError {
    return { type: 'validation', message, issues };
  },

  notFound(message = 'Resource not found'): AppError {
    return { type: 'not_found', message };
  },

  conflict(message: string): AppError {
    return { type: 'conflict', message };
  },

  unauthorized(message = 'Unauthorized'): AppError {
    return { type: 'unauthorized', message };
  },

  forbidden(message = 'Forbidden'): AppError {
    return { type: 'forbidden', message };
  },

  unexpected(message = 'Unexpected error'): AppError {
    return { type: 'unexpected', message };
  },
};