#!/usr/bin/env node

import { Octokit } from "@octokit/core"
import fs from "fs"
import path from "path"
import { fileURLToPath } from "url"

const shouldExpire = process.argv.indexOf("--expire") !== -1
const octokit = new Octokit({
  auth: process.env.GH_TOKEN,
})

async function main() {
  let announcement = {}

  if (shouldExpire) {
    //check if the file was last updated 6 days ago
    try {
      const commitResponse = await octokit.request(
        "GET /repos/{owner}/{repo}/commits",
        {
          owner: "medusajs",
          repo: "medusa",
          path: path.join("www", "apps", "docs", "announcement.json"),
          per_page: 1,
        }
      )

      if (
        commitResponse.data.length &&
        commitResponse.data[0].commit.committer?.date &&
        dateDiffInDays(
          new Date(commitResponse.data[0].commit.committer.date),
          new Date()
        ) < 6
      ) {
        console.log("File was edited less than 6 days ago. Expiry canceled.")
        return
      }
    } catch (e) {
      //continue as if file doesn't exist
    }
  } else {
    //retrieve the latest release
    const response = await octokit.request(
      "GET /repos/{owner}/{repo}/releases/latest",
      {
        owner: "medusajs",
        repo: "medusa",
      }
    )

    const version = response.data.tag_name

    //add new announcement
    announcement = {
      id: response.data.html_url,
      content: `${version} is out`,
      isCloseable: true,
    }
  }

  const __filename = fileURLToPath(import.meta.url)
  const __dirname = path.dirname(__filename)

  //write new config file
  fs.writeFileSync(
    path.join(
      __dirname,
      "..",
      "..",
      "..",
      "www",
      "apps",
      "docs",
      "announcement.json"
    ),
    JSON.stringify(announcement)
  )
  console.log(`Announcement Bar has been ${shouldExpire ? "removed" : "added"}`)
}

const _MS_PER_DAY = 1000 * 60 * 60 * 24

// a and b are javascript Date objects
function dateDiffInDays(a: Date, b: Date) {
  // Discard the time and time-zone information.
  const utc1 = Date.UTC(a.getFullYear(), a.getMonth(), a.getDate())
  const utc2 = Date.UTC(b.getFullYear(), b.getMonth(), b.getDate())

  return Math.floor((utc2 - utc1) / _MS_PER_DAY)
}

void main()