#!/usr/bin/env node
"use strict";

const fs = require("fs");
const path = require("path");
const { spawnSync } = require("child_process");
const { STAGES, resolveStages, canonicalStages } = require("./lib/build-stages");

const repoRoot = path.resolve(__dirname, "..");

function areaConfigs() {
  return fs.readdirSync(path.join(repoRoot, "config", "areas"))
    .filter((file) => file.endsWith(".json"))
    .sort()
    .map((file) => path.join(repoRoot, "config", "areas", file));
}

function requireTty(input = process.stdin, output = process.stdout) {
  if (!input.isTTY || !output.isTTY) throw new Error("Interactive build requires a TTY. Use npm run build:area -- --config <area> --stages <stages> instead.");
}

async function main() {
  requireTty();
  const configs = areaConfigs();
  if (!configs.length) throw new Error("No area configs found in config/areas.");
  const { select, checkbox } = await import("@inquirer/prompts");
  const config = await select({
    message: "Choose an area",
    choices: configs.map((file) => ({ name: path.basename(file, ".json"), value: file })),
  });
  const chosen = await checkbox({
    message: "Choose build stages",
    choices: STAGES.map((stage) => ({ name: `${stage.id} - ${stage.description}`, value: stage.id })),
    required: true,
  });
  if (!chosen.length) throw new Error("Choose at least one build stage.");
  const stages = canonicalStages(resolveStages({}, chosen));
  console.log(`Area: ${path.basename(config)}`);
  console.log(`Stages: ${stages.join(", ")}`);
  const result = spawnSync(process.execPath, [path.join(__dirname, "build-area.js"), "--config", config, "--stages", stages.join(",")], { stdio: "inherit" });
  if (result.error) throw result.error;
  process.exitCode = result.status || 0;
}

if (require.main === module) main().catch((error) => {
  if (error.name !== "ExitPromptError") console.error(`Error: ${error.message}`);
  process.exitCode = error.name === "ExitPromptError" ? 0 : 1;
});
module.exports = { areaConfigs, requireTty };