import { build } from "esbuild"
import { readdir } from "node:fs/promises"
import { dirname, resolve } from "node:path"
import { fileURLToPath } from "node:url"

const bridgeRoot = dirname(fileURLToPath(import.meta.url))
const webPanelRoot = resolve(bridgeRoot, "..")
const distRoot = resolve(webPanelRoot, "dist")
const bridgeEntryPoint = resolve(bridgeRoot, "source.cjs")
const bridgeOutfile = resolve(distRoot, "bridge.cjs")
const rendererScriptsRoot = resolve(bridgeRoot, "scripts", "default")
const rendererScriptsOutdir = resolve(distRoot, "renderer-scripts")

await build({
  banner: {
    js: "// Generated by bridge/build.mjs. Do not edit this bundle by hand.",
  },
  bundle: true,
  entryPoints: [bridgeEntryPoint],
  format: "cjs",
  legalComments: "none",
  minify: true,
  outfile: bridgeOutfile,
  platform: "node",
  target: "node16",
})

const rendererEntries = (
  await readdir(rendererScriptsRoot, { withFileTypes: true })
)
  .filter((entry) => entry.isFile() && entry.name.endsWith(".js"))
  .map((entry) => resolve(rendererScriptsRoot, entry.name))

if (rendererEntries.length === 0) {
  throw new Error(`No renderer script entries found in ${rendererScriptsRoot}`)
}

await build({
  banner: {
    js: "// Generated by bridge/build.mjs. Do not edit this bundle by hand.",
  },
  bundle: true,
  entryNames: "[name]",
  entryPoints: rendererEntries,
  format: "iife",
  legalComments: "none",
  minify: true,
  outdir: rendererScriptsOutdir,
  platform: "browser",
  target: "es2020",
})

console.log(`Built ${bridgeOutfile}`)
console.log(
  `Built ${rendererEntries.length} renderer script(s) in ${rendererScriptsOutdir}`
)