import { execFileSync } from "node:child_process";
import {
  copyFileSync,
  mkdirSync,
  readFileSync,
  writeFileSync,
} from "node:fs";
import { createHash } from "node:crypto";
import { dirname, resolve } from "node:path";
import { fileURLToPath } from "node:url";

const repository = resolve(dirname(fileURLToPath(import.meta.url)), "..");
const core = resolve(repository, "crypto-core");
const generated = resolve(core, "generated");
const destination = resolve(repository, "src/shared/noise-core-wasm");
const wasm = resolve(generated, "peach_noise_core_bg.wasm");

function run(command, args) {
  execFileSync(command, args, { cwd: core, stdio: "inherit" });
}

run("cargo", ["fmt", "--check"]);
run("cargo", ["test", "--locked"]);
run("cargo", [
  "build",
  "--locked",
  "--target",
  "wasm32-unknown-unknown",
  "--release",
]);
run("wasm-bindgen", [
  "--target",
  "web",
  "--out-dir",
  generated,
  resolve(
    core,
    "target/wasm32-unknown-unknown/release/peach_noise_core.wasm",
  ),
]);

mkdirSync(destination, { recursive: true });
for (const file of [
  "peach_noise_core.js",
  "peach_noise_core.d.ts",
  "peach_noise_core_bg.wasm",
  "peach_noise_core_bg.wasm.d.ts",
]) {
  copyFileSync(resolve(generated, file), resolve(destination, file));
}

const bytes = readFileSync(wasm);
const base64 = bytes.toString("base64");
const chunks = base64.match(/.{1,120}/g) ?? [];
writeFileSync(
  resolve(destination, "peach_noise_core_bytes.ts"),
  [
    "// Generated by scripts/build-noise-core.mjs. Do not edit.",
    "export const PEACH_NOISE_CORE_WASM_BASE64 = [",
    ...chunks.map((chunk) => `  "${chunk}",`),
    '].join("");',
    "",
  ].join("\n"),
);

const digest = createHash("sha256").update(bytes).digest("hex");
console.log(`Peach Noise WASM SHA-256: ${digest}`);