browser/angular/src/services/validation.service.ts

import { Injectable } from '@angular/core';

import { I18nService } from 'jslib-common/abstractions/i18n.service';
import { PlatformUtilsService } from 'jslib-common/abstractions/platformUtils.service';

import { ErrorResponse } from 'jslib-common/models/response/errorResponse';

@Injectable()
export class ValidationService {
    constructor(private i18nService: I18nService, private platformUtilsService: PlatformUtilsService) { }

    showError(data: any): string[] {
        const defaultErrorMessage = this.i18nService.t('unexpectedError');
        let errors: string[] = [];

        if (data != null && typeof data === 'string') {
            errors.push(data);
        } else if (data == null || typeof data !== 'object') {
            errors.push(defaultErrorMessage);
        } else if (data.validationErrors != null) {
            errors = errors.concat((data as ErrorResponse).getAllMessages());
        } else {
            errors.push(data.message ? data.message : defaultErrorMessage);
        }

        if (errors.length === 1) {
            this.platformUtilsService.showToast('error', this.i18nService.t('errorOccurred'), errors[0]);
        } else if (errors.length > 1) {
            this.platformUtilsService.showToast('error', this.i18nService.t('errorOccurred'), errors, {
                timeout: 5000 * errors.length,
            });
        }

        return errors;
    }
}