// Maintainer-only build. The resulting two-binary bundle needs no extra host runtime.
import { spawnSync } from "node:child_process";
import { createHash } from "node:crypto";
import { mkdirSync, readFileSync, writeFileSync } from "node:fs";
import { dirname, join, resolve } from "node:path";
import { fileURLToPath } from "node:url";

const repository = process.env.THT_BUILD_SOURCE_ROOT ? resolve(process.env.THT_BUILD_SOURCE_ROOT) : resolve(dirname(fileURLToPath(import.meta.url)), "../..");
const backend = join(repository, "backend");
const native = `${process.platform === "win32" ? "windows" : process.platform}-${process.arch === "x64" ? "amd64" : process.arch}`;
const targets = {
  "windows-amd64": ["windows", "amd64", "bun-windows-x64"],
  "darwin-amd64": ["darwin", "amd64", "bun-darwin-x64"],
  "darwin-arm64": ["darwin", "arm64", "bun-darwin-arm64"],
  "linux-amd64": ["linux", "amd64", "bun-linux-x64"],
  "linux-arm64": ["linux", "arm64", "bun-linux-arm64"],
};
const requested = process.argv.slice(2);
const selected = requested.length === 1 && requested[0] === "--all" ? Object.keys(targets) : requested.length ? requested : [native];
if (selected.some((target) => !targets[target])) {
  console.error(`Usage: npm run build:workspace-tools -- [${Object.keys(targets).join("|")}|--all]`);
  process.exit(2);
}
function run(command, args, cwd = backend, env = process.env) {
  const result = spawnSync(command, args, { cwd, env, stdio: "inherit" });
  if (result.error || result.status !== 0) throw new Error(`Build failed: ${command}`);
}
const revision = spawnSync("git", ["rev-parse", "HEAD"], { cwd: repository, encoding: "utf8" });
if (revision.status !== 0) throw new Error("Cannot read build revision");
const commit = revision.stdout.trim();
const buildTime = process.env.THT_BUILD_TIME ?? new Date().toISOString();
const releaseVersion = process.env.THT_BUILD_VERSION ?? "0.0.0-dev";
if (!/^[0-9]+\.[0-9]+\.[0-9]+(?:-[A-Za-z0-9.-]+)?$/.test(releaseVersion) || !Number.isFinite(Date.parse(buildTime))) throw new Error("Invalid build identity");
const module = "github.com/aritmolab/thothii/tools/tht/internal/version";
const bunPackage = JSON.parse(readFileSync(join(backend, "node_modules", "bun", "package.json"), "utf8"));
const bun = join(backend, "node_modules", "bun", bunPackage.bin.bun);
for (const target of selected) {
  const [os, arch, bunTarget] = targets[target];
  const output = join(repository, "dist", "workspace-tools", target);
  mkdirSync(output, { recursive: true });
  const extension = os === "windows" ? ".exe" : "";
  const names = [`tht${extension}`, `tht-workspace-documents${extension}`];
  run(bun, ["build", "src/workspace-documents-cli.ts", "--compile", `--target=${bunTarget}`, "--outfile", join(output, names[1])]);
  run("go", ["build", "-trimpath", "-ldflags", `-s -w -X ${module}.semanticVersion=${releaseVersion} -X ${module}.commit=${commit} -X ${module}.buildTime=${buildTime}`, "-o", join(output, names[0]), "./cmd/tht"], join(repository, "tools", "tht"), { ...process.env, CGO_ENABLED: "0", GOOS: os, GOARCH: arch });
  const hashes = names.map((name) => `${createHash("sha256").update(readFileSync(join(output, name))).digest("hex")}  ${name}\n`).join("");
  writeFileSync(join(output, "SHA256SUMS"), hashes);
  writeFileSync(join(output, "build.json"), JSON.stringify({ version: releaseVersion, commit, buildTime, target, bun: JSON.parse(readFileSync(join(backend, "package.json"), "utf8")).devDependencies.bun }, null, 2) + "\n");
  console.log(output);
}