fairnesscoop / permacoop

import * as pathlib from 'path';

import { Inject, Injectable } from '@nestjs/common';

import { Packer } from 'docx';

import { IDocxService } from 'src/Application/IDocxService';

import {

  DocxOptions,

  DocxFunction,

  DOCX_OPTIONS_TOKEN

} from '../docx.interfaces';

@Injectable()

export class DocxAdapter implements IDocxService {

  constructor(

    @Inject(DOCX_OPTIONS_TOKEN)

    private readonly options: DocxOptions

  ) {}

  public async toBuffer(

    name: string,

    locals: Record<string, any> = {}

  ): Promise<Buffer> {

    // Dynamically load docx generator function from:

    // {root}/{name}/docx.ts

    const path = pathlib.join(this.options.root, name, 'docx');

    const mod: any = await import(path);

    const fn: DocxFunction = mod.fn;

    const doc = fn(locals);

    return Packer.toBuffer(doc);

  }

}