# Verify both WASI forms, render their bundles, and compare process wall times.
use std/assert
def checked [program: string, args: list<string>] {
  let start = date now
  let result = (run-external $program ...$args | complete)
  let ms = ((date now) - $start) / 1ms
  if $result.exit_code != 0 {
    print $result.stdout
    print --stderr $result.stderr
    error make {msg: $'Failed: ($program) ($args | str join " ")'}
  }
  {ms: $ms, stdout: ($result.stdout | str trim)}
}

def main [] {
  let root = '/tmp/s6-esbuild'
  cd ($root | path join app)
  ^go version
  ^wasmtime --version
  let flags = ['app.tsx' '--bundle' '--minify' '--format=iife' '--platform=browser' '--jsx=automatic' '--jsx-import-source=preact' '--legal-comments=none' '--log-level=error']
  let variants = [
    {name: native, program: $'($root)/esbuild-native', prefix: []},
    {name: module, program: wasmtime, prefix: [run --dir .::/ $'($root)/esbuild.wasm']},
    {name: component, program: wasmtime, prefix: [run --dir .::/ $'($root)/esbuild.component.wasm']}
  ]
  for variant in $variants {
    let version = checked $variant.program ($variant.prefix | append '--version')
    assert equal $version.stdout '0.27.7'
    print $'PASS ($variant.name) version=($version.stdout) first_startup_ms=($version.ms)'
    let result = checked $variant.program ($variant.prefix | append $flags | append $'--outfile=($variant.name).js')
    print $'PASS ($variant.name) first_bundle_ms=($result.ms)'
    let render = checked node [check.mjs $'($variant.name).js']
    print $render.stdout
  }
  assert equal (open --raw native.js) (open --raw module.js)
  assert equal (open --raw native.js) (open --raw component.js)
  print $'PASS byte-identical native/module/component bundles: ((ls component.js).size.0)'
  for name in [esbuild-native esbuild.wasm esbuild.component.wasm] {
    let size = (ls ($root | path join $name)).size.0
    print $'SIZE ($name): ($size | into int) bytes'
  }
  # Precompiled artifacts model the host cache without including Cranelift compilation.
  for name in [module component] {
    let input = if $name == module { 'esbuild.wasm' } else { 'esbuild.component.wasm' }
    let compile = checked wasmtime [compile $'($root)/($input)' -o $'($root)/($name).cwasm']
    print $'COMPILE ($name): ($compile.ms) ms'
  }
  for variant in [
    {name: native, program: $'($root)/esbuild-native', prefix: []},
    {name: module-precompiled, program: wasmtime, prefix: [run --allow-precompiled --dir .::/ $'($root)/module.cwasm']},
    {name: component-precompiled, program: wasmtime, prefix: [run --allow-precompiled --dir .::/ $'($root)/component.cwasm']}
  ] {
    let startup = (1..5 | each { (checked $variant.program ($variant.prefix | append '--version')).ms })
    let bundle = (1..5 | each { (checked $variant.program ($variant.prefix | append $flags | append '--outfile=bench.js')).ms })
    print $'BENCH ($variant.name) median_ms n=5: startup=($startup | math median) bundle=($bundle | math median)'
  }
  print 'PASS all acceptance checks'
}