import express from "express"
export const convertTemplateRoute = express.Router()
import { mimeToExtension } from "./report-template"
import { LibreOfficeFileConverter } from "libreoffice-file-converter"

/** javascript-obfuscator:disable
 * @swagger
 * tags:
 *   name: office-convert
 *   description: ใช้แปลงไฟล์จากเอกสารที่ libreoffice แปลงได้ เช่น docx เป็น pdf
 */

/** javascript-obfuscator:disable
 * @swagger
 * /api/v1/report-template/convert:
 *   post:
 *     summary: แปลงฟอร์แม็ตเอกสารเช่นจาก docx เป็น pdf ให้ตั้งค่า Media type เป็นชนิดไฟล์ที่ต้องการ
 *     tags: [office-convert]
 *     parameters:
 *       - name: report-name
 *         in: header
 *         description: ชื่อไฟล์ที่ต้องการหลังแปลง
 *         required: true
 *         schema:
 *           type: string
 *           example: report
 *     requestBody:
 *       required: true
 *       content:
 *          application/octet-stream:
 *           schema:
 *             type: string
 *             format: binary
 *     responses:
 *       201:
 *         description: file was converted.
 *         content:
 *           application/pdf:
 *             schema:
 *               type: string
 *               format: binary
 *           application/vnd.oasis.opendocument.text:
 *             schema:
 *               type: string
 *               format: binary
 *           application/vnd.openxmlformats-officedocument.wordprocessingml.document:
 *             schema:
 *               type: string
 *               format: binary
 *           application/msword:
 *             schema:
 *               type: string
 *               format: binary
 *           image/png:
 *             schema:
 *               type: string
 *               format: binary
 *           image/jpeg:
 *             schema:
 *               type: string
 *               format: binary
 *       400:
 *         description: Invalid format
 *       500:
 *         description: Server error
 *
 */
convertTemplateRoute.post("/", async function (req, res) {
  try {
    if (
      !req.headers["content-type"] ||
      !req.headers["accept"] ||
      !req.headers["report-name"] ||
      req.headers["content-type"] !== "application/octet-stream"
    ) {
      res.statusCode = 400
      res.statusMessage =
        "Require header: content-type(application/octet-stream) accept, report-name"
      res.end(res.statusMessage)
      console.log(
        req.headers["content-type"],
        req.headers["accept"],
        req.headers["report-name"]
      )
      return
    }
    let outputMediaType = mimeToExtension(req.headers["accept"])
    let reportName = req.headers["report-name"]
    console.log("convert output: " + outputMediaType)
    const libreOfficeFileConverter = new LibreOfficeFileConverter({
      childProcessOptions: {
        timeout: 60 * 1000,
      },
    })
    //const buffer = await libreOfficeFileConverter.convertBuffer(req.body, outputMediaType);
    const buffer = await libreOfficeFileConverter.convert({
      buffer: Buffer.from(req.body),
      format: outputMediaType,
      input: "buffer",
      output: "buffer",
    })
    res.statusCode = 201
    res.setHeader("Content-Type", req.headers["accept"])
    res.setHeader(
      "Content-Disposition",
      `attachment;filename=${reportName}.${outputMediaType}`
    )
    res.setHeader("Content-Length", buffer.length)
    res.end(buffer)
  } catch (ex) {
    if (ex instanceof SyntaxError) {
      res.statusCode = 400
      res.statusMessage = ex.message
      res.end(res.statusMessage)
      console.error("report-template/convert: ", ex)
    } else {
      res.statusCode = 500
      res.statusMessage =
        "Internal Server Error during POST report-template/convert"
      res.end(res.statusMessage)
      console.error("report-template/html: ", ex)
    }
  }
})