import __ from "https://deno.land/x/dirname@1.1.2/mod.ts";
import { resolve } from "https://deno.land/std@0.105.0/path/mod.ts";
const { __dirname } = __(import.meta);

// deno run -A build.ts debug
// deno run -A build.ts release
// deno run -A build.ts release web
// deno run -A build.ts release nodejs
let profile = "dev";
if (Deno.args[0] == "release") {
  profile = "release";
}
const TARGETS = ["bundler", "web", "nodejs"];
const startTime = performance.now();
const LoroWasmDir = resolve(__dirname, "..");

console.log(LoroWasmDir);
async function build() {
  await cargoBuild();
  if (Deno.args[1] != null) {
    if (!TARGETS.includes(Deno.args[1])) {
      throw new Error(`Invalid target ${Deno.args[1]}`);
    }

    buildTarget(Deno.args[1]);
    return;
  }

  await Promise.all(TARGETS.map((target) => {
    return buildTarget(target);
  }));

  console.log(
    "✅",
    "Build complete in",
    (performance.now() - startTime) / 1000,
    "s",
  );
}

async function cargoBuild() {
  const cmd  = `cargo build --target wasm32-unknown-unknown --profile ${profile}`;
  console.log(cmd);
  const status = await Deno.run({
    cmd: cmd.split(" "),
    cwd: LoroWasmDir,
  }).status();
  if (!status.success) {
    console.log(
      "❌",
      "Build failed in",
      (performance.now() - startTime) / 1000,
      "s",
    );
    Deno.exit(status.code);
  }
}

async function buildTarget(target: string) {
  console.log("🏗️  Building target", `[${target}]`);
  const targetDirPath = resolve(LoroWasmDir, target);
  try {
    await Deno.remove(targetDirPath, { recursive: true });
    console.log("Clear directory " + targetDirPath);
  } catch (e) {}

  for (const cmd of genCommands(target)) {
    console.log(">", cmd);
    await Deno.run({ cmd: cmd.split(" "), cwd: LoroWasmDir }).status();
  }
  console.log();
}

function genCommands(target: string): string[] {
  return [
    `wasm-bindgen --weak-refs --target ${target} --out-dir ${target} ../../target/wasm32-unknown-unknown/${profile}/loro_wasm.wasm`,
    ...(profile == "dev" ? [] : [
      `wasm-opt -O4 ${target}/loro_wasm_bg.wasm -o ${target}/loro_wasm_bg.wasm`,
    ]),
  ];
}

build();