#!/usr/bin/env node

const fs = require("fs/promises")
const os = require("os")
const path = require("path")
const execa = require("execa")

const isDryRun = process.argv.indexOf("--dry-run") !== -1
const withFullFile = process.argv.indexOf("--with-full-file") !== -1
const v2 = process.argv.indexOf("--v2") !== -1
const basePath = path.resolve(__dirname, `../`)
const repoRootPath = path.resolve(basePath, `../../../`)
const docsApiPath = v2 ? path.resolve(repoRootPath, "www/apps/api-reference/specs-v2") : 
  path.resolve(repoRootPath, "www/apps/api-reference/specs")

const run = async () => {
  const oasOutDir = isDryRun ? await getTmpDirectory() : docsApiPath
  for (const apiType of ["store", "admin"]) {
    await generateOASSource(oasOutDir, apiType)
    const oasSrcFile = path.resolve(oasOutDir, `${apiType}.oas.json`)
    const docsOutDir = path.resolve(oasOutDir, apiType)
    await generateDocs(oasSrcFile, docsOutDir, isDryRun)
  }
}

const generateOASSource = async (outDir, apiType) => {
  const commandParams = ["oas", `--type=${apiType}`, `--out-dir=${outDir}`]
  if (v2) {
    commandParams.push(`--v2`)
  }
  const { all: logs } = await execa(
    "medusa-oas",
    commandParams,
    { cwd: basePath, all: true }
  )
  console.log(logs)
}

const generateDocs = async (srcFile, outDir, isDryRun) => {
  let params = [
    "docs",
    `--src-file=${srcFile}`,
    `--out-dir=${outDir}`,
    `--clean`,
    `--split`,
  ]
  if (isDryRun) {
    params.push("--dry-run")
  }
  await runMedusaOasCommand(params)
  if (withFullFile && !isDryRun) {
    console.log("Generating full file...")
    params = [
      "docs",
      `--src-file=${srcFile}`,
      `--out-dir=${outDir}`,
      `--main-file-name=openapi.full.yaml`
    ]
    await runMedusaOasCommand(params)
    console.log("Finished generating full file.")
  }
}

const runMedusaOasCommand = async (params) => {
  const { all: logs } = await execa("medusa-oas", params, {
    cwd: basePath,
    all: true,
  })
  console.log(logs)
}

const getTmpDirectory = async () => {
  /**
   * RUNNER_TEMP: GitHub action, the path to a temporary directory on the runner.
   */
  const tmpDir = process.env["RUNNER_TEMP"] ?? os.tmpdir()
  return await fs.mkdtemp(tmpDir)
}

void (async () => {
  try {
    await run()
  } catch (err) {
    console.log(err)
    process.exit(1)
  }
})()