web-font/src/app.controller.ts

import {
  Controller,
  Get,
  Param,
  Query,
  Response,
  Res,
  Req,
} from '@nestjs/common';
import { AppService } from './app.service';
import { join } from 'path';
import { promises as fs } from 'fs';
import { Request } from 'express';
import { Stream } from 'stream';
@Controller()
export class AppController {
  constructor(private readonly appService: AppService) {}

  /** 压缩字体 */
  @Get('fontmin')
  font_min(@Query('text') text, @Query('font') font) {
    return this.appService.font_min(text, font);
  }

  /** 返回字体列表 */
  @Get('font_list')
  font_list() {
    const font_dir = join(__dirname, '../../src/font');
    return fs.readdir(font_dir);
  }

  /** 压缩字体 */
  @Get('generate_fonts_dynamically*')
  async generate_fonts_dynamically(
    @Req() req: Request,
    @Res() res,
    @Query('text') text: string,
    @Query('font') font: string,
    @Query('temp') temp: string,
  ) {
    console.time()
    const type = req.url.match(/\.(.*)\?/)[1];
    const file = await this.appService.generate_fonts_dynamically(
      text,
      font,
      temp,
      type,
    );
    res.set({
      'Content-Type': `font/${type}`,
    });
    const bufferStream = new Stream.PassThrough();
    bufferStream.end(file);
    bufferStream.pipe(res);
    console.timeEnd()

  }
}