@webilix/nestjs-helper

import { Inject, Injectable } from '@nestjs/common'; import * as docx from 'docx'; import * as fs from 'fs'; import { Helper } from '@webilix/helper-library'; import { JalaliDateTime } from '@webilix/jalali-date-time'; import { IExportConfig, IExportHeader, IExportOptions, IExportTable } from '../export.interface'; import { ExportColumn, ExportColumnEnum } from '../export.type'; @Injectable() export class ExportWordService { constructor(@Inject('EXPORT_CONFIG') private readonly config: IExportConfig) {} private noBorder: docx.ITableCellBorders = { top: { style: docx.BorderStyle.NONE }, left: { style: docx.BorderStyle.NONE }, right: { style: docx.BorderStyle.NONE }, bottom: { style: docx.BorderStyle.NONE }, }; private getTextRun = ( text: string, config?: Partial<{ color: string; font: string; size: number; bold: boolean; newLine: boolean }>, ): docx.TextRun => new docx.TextRun({ text, color: config?.color || this.config.textColor, font: config?.font || this.config.fontFA, size: config?.size || 20, bold: config?.bold || false, boldComplexScript: config?.bold || false, break: config?.newLine ? 1 : 0, }); private getParagraph = ( alignment: (typeof docx.AlignmentType)[keyof typeof docx.AlignmentType], children: docx.ParagraphChild[], ): docx.Paragraph => new docx.Paragraph({ alignment, bidirectional: true, children }); private getTH = (text: string): docx.TableCell => new docx.TableCell({ shading: { color: this.config.backgroundColor, type: docx.ShadingType.SOLID }, verticalAlign: docx.VerticalAlign.CENTER, borders: { top: { style: docx.BorderStyle.SINGLE, size: 1, color: this.config.backgroundColor }, right: { style: docx.BorderStyle.SINGLE, size: 1, color: this.config.backgroundColor }, bottom: { style: docx.BorderStyle.SINGLE, size: 1, color: this.config.backgroundColor }, left: { style: docx.BorderStyle.SINGLE, size: 1, color: this.config.backgroundColor }, }, margins: { top: 100, right: 100, bottom: 100, left: 100 }, children: [ this.getParagraph('left', [this.getTextRun(text, { bold: true, color: this.config.foregroundColor })]), ], }); private getTD = (text: string, column: ExportColumn): docx.TableCell => { const english: boolean = ExportColumnEnum[column.type].docx.english(column); return new docx.TableCell({ verticalAlign: docx.VerticalAlign.TOP, borders: { top: { style: docx.BorderStyle.SINGLE, size: 1, color: this.config.backgroundColor }, right: { style: docx.BorderStyle.SINGLE, size: 1, color: this.config.backgroundColor }, bottom: { style: docx.BorderStyle.SINGLE, size: 1, color: this.config.backgroundColor }, left: { style: docx.BorderStyle.SINGLE, size: 1, color: this.config.backgroundColor }, }, margins: { top: 50, right: 100, bottom: 50, left: 100 }, children: [ this.getParagraph( english ? 'right' : 'left', text.split('\n').map((line: string, index: number) => this.getTextRun(line, { size: 18, newLine: index !== 0, font: english ? this.config.fontEN : this.config.fontFA, }), ), ), ], }); }; private getLogo = (image?: string): docx.TableCell | undefined => Helper.IS.empty(image) ? undefined : new docx.TableCell({ verticalAlign: docx.VerticalAlign.CENTER, borders: { ...this.noBorder }, margins: { top: 0, right: 0, bottom: 100, left: 0 }, children: [ this.getParagraph('center', [ new docx.ImageRun({ type: 'png', data: fs.readFileSync(image || ''), transformation: { width: 50, height: 50 }, }), ]), ], }); private getDescription = (description?: string): docx.Paragraph | undefined => !description ? undefined : this.getParagraph('left', [ this.getTextRun(description, { bold: true, color: this.config.backgroundColor, }), ]); private getHeader = (headers: IExportHeader[] = []): docx.Table | undefined => headers.length === 0 ? undefined : new docx.Table({ visuallyRightToLeft: true, width: { size: 100, type: docx.WidthType.PERCENTAGE }, rows: headers.map( (h) => new docx.TableRow({ children: [ new docx.TableCell({ borders: { ...this.noBorder }, margins: { top: 0, right: 0, bottom: 0, left: 0 }, children: [ this.getParagraph('left', [ this.getTextRun(`${h.title}: `, { bold: true, color: this.config.backgroundColor, }), this.getTextRun(h.value, { color: this.config.backgroundColor, font: h.english ? this.config.fontEN : this.config.fontFA, }), ]), ], }), ], }), ), }); private getWidth = (table: IExportTable): number[] => { const size: number[] = table.columns.map((c) => c.title.length); table.columns.map((c, index: number) => { table.rows.forEach((r) => { const length: number = ExportColumnEnum[c.type].width(r[c.id], c); if (length > size[index]) size[index] = length; }); }); const sum: number = size.reduce((sum: number, s) => sum + s, 0); const width: number[] = size.map((s) => 5 + Math.floor((s / sum) * 95)); while (width.reduce((sum: number, w) => sum + w, 0) > 100) width[width.indexOf(Math.max(...width))]--; while (width.reduce((sum: number, w) => sum + w, 0) < 100) width[width.indexOf(Math.min(...width))]++; return width; }; export(path: string, table: IExportTable, options?: IExportOptions): Promise<void> { return new Promise<void>(async (resolve, reject) => { try { const styles: docx.IStylesOptions = { default: { document: { paragraph: { spacing: { before: 0, after: 0 } }, run: { font: this.config.fontFA, rightToLeft: true, size: 20 }, }, }, }; const th: docx.TableRow = new docx.TableRow({ children: table.columns.map((c) => this.getTH(c.title)), tableHeader: true, }); const td: docx.TableRow[] = table.rows.map((r) => { return new docx.TableRow({ children: table.columns.map((c) => this.getTD(ExportColumnEnum[c.type].docx.value(r[c.id], c), c)), cantSplit: true, }); }); const header: docx.Header = new docx.Header({ children: [ new docx.Table({ visuallyRightToLeft: true, width: { size: 100, type: docx.WidthType.PERCENTAGE }, columnWidths: this.config.logo ? [7, 70, 23] : [70, 30], rows: [ new docx.TableRow({ children: ( [ this.getLogo(this.config.logo), new docx.TableCell({ verticalAlign: docx.VerticalAlign.CENTER, borders: { ...this.noBorder }, margins: { top: 0, right: 0, bottom: 100, left: 0 }, children: ( [ this.getParagraph('left', [ this.getTextRun(table.title, { size: 28, bold: true, color: this.config.backgroundColor, }), ]), this.getDescription(table.description), this.getHeader(table.headers), ] as (docx.Paragraph | docx.Table)[] ).filter((c) => c !== undefined), }), new docx.TableCell({ verticalAlign: docx.VerticalAlign.BOTTOM, borders: { ...this.noBorder }, margins: { top: 0, right: 0, bottom: 100, left: 0 }, children: options?.hideDate ? [] : [ this.getParagraph('right', [ this.getTextRun( JalaliDateTime().toTitle(new Date(), { format: 'W، d N Y', }), ), ]), ], }), ] as docx.TableCell[] ).filter((c) => c !== undefined), }), ], }), ], }); const footer: docx.Footer = new docx.Footer({ children: [ this.getParagraph('right', [ new docx.TextRun({ children: [docx.PageNumber.CURRENT, ' / ', docx.PageNumber.TOTAL_PAGES], }), ]), ], }); const doc = new docx.Document({ styles, sections: [ { properties: { page: { size: { orientation: docx.PageOrientation.LANDSCAPE } } }, headers: { default: header }, footers: { default: footer }, children: [ new docx.Table({ visuallyRightToLeft: true, width: { size: 100, type: docx.WidthType.PERCENTAGE }, columnWidths: this.getWidth(table), rows: [th, ...td], }), ], }, ], }); fs.writeFileSync(path, Buffer.from(await docx.Packer.toBuffer(doc))); resolve(); } catch (e) { reject(); } }); } }