#!/usr/bin/env -S v -raw-vsh-tmp-prefix tmp

import os
import net.http

const github_job = os.getenv('GITHUB_JOB')

struct JQ {
    tag_name string
}

fn main() {
    root := os.real_path(os.dir(os.getenv_opt('VEXE') or { @VEXE }))
    os.chdir(root)! // make sure that the workfolder is stable

    tloc := os.join_path(root, 'thirdparty')
    loc := os.join_path(tloc, 'binaryen')

    if os.exists(loc) {
        eprintln('thirdparty/binaryen exists, will not overwrite')
        eprintln('delete the folder, and execute again')
        exit(1)
    }

    /*
    // TODO: add retries here, github requests can fail
    jq := http.get_text('https://api.github.com/repos/WebAssembly/binaryen/releases/latest')
    tag := json.decode(JQ, jq)!.tag_name
         if github_job != '' {
                 dump(jq)
                 dump(tag)
         }
    */
    tag := 'version_112'

    name := $if windows {
        'x86_64-windows'
    } $else $if macos {
        $if arm64 {
            'arm64-macos'
        } $else {
            'x86_64-macos'
        }
    } $else $if linux {
        'x86_64-linux'
    } $else {
        eprintln('A premade binary library is not available for your system.')
        eprintln('Build it from source, following the documentation here: https://github.com/WebAssembly/binaryen/#building')
        exit(1)
    }

    fname := 'binaryen-${tag}'
    url := 'https://github.com/WebAssembly/binaryen/releases/download/${tag}/${fname}-${name}.tar.gz'

    saveloc := os.join_path(tloc, '${fname}.tar.gz')
    if !os.exists(saveloc) {
        println('Downloading archive: ${saveloc}, from url: ${url} ...')
        http.download_file(url, saveloc)!
        // defer { os.rm(saveloc) or {}! }
    }

    println('Extracting `${tloc}/${fname}` to `${tloc}/binaryen` ...')
    cmd := 'tar -xvf ${saveloc} --directory ${tloc}'
    if os.system(cmd) != 0 {
        eprintln('`${cmd}` exited with a non zero exit code')
        exit(1)
    }

    println(cmd)
    println('Moving `${tloc}/${fname}` to `${tloc}/binaryen` ...')

    os.rename_dir('${tloc}/${fname}', loc)!
    println('Done. You can now use `v -b wasm file.v` .')
}