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

import { TranslateService } from '@ngx-translate/core';

import { CsvExportService, CsvColumnDefinitionProperty } from 'app/core/services/csv-export.service';
import { ViewStatuteParagraph } from '../models/view-statute-paragraph';
import { FileExportService } from 'app/core/services/file-export.service';

/**
 * Exports CSVs for statute paragraphs.
 */
@Injectable({
    providedIn: 'root'
})
export class StatuteCsvExportService {
    /**
     * Does nothing.
     *
     * @param csvExport CsvExportService
     * @param translate TranslateService
     * @param fileExport FileExportService
     */
    public constructor(
        private csvExport: CsvExportService,
        private translate: TranslateService,
        private fileExport: FileExportService
    ) {}

    /**
     * Export all statute paragraphs as CSV
     *
     * @param statute statute PParagraphs to export
     */
    public exportStatutes(statutes: ViewStatuteParagraph[]): void {
        const exportProperties: CsvColumnDefinitionProperty<ViewStatuteParagraph>[] = [
            { property: 'title' },
            { property: 'text' }
        ];
        this.csvExport.export(statutes, exportProperties, this.translate.instant('Statutes') + '.csv');
    }

    /**
     * Exports a short example file
     */
    public exportDummyCSV(): void {
        const headerRow = ['Title', 'Text'].map(item => this.translate.instant(item)).join(',');
        const rows = [
            headerRow,
            '§1,"This is the first section"',
            '"§1, A 3", "This is another important aspect"',
            '§2,Yet another'
        ];
        this.fileExport.saveFile(
            rows.join('\n'),
            `${this.translate.instant('Statutes')} - ${this.translate.instant('example')}.csv`
        );
    }
}