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

// Load the vendored CLI bundle without running main(), then call the
// in-bundle getSevenGovernorsChart(date, location, options) that the CLI
// itself never forwards flags into.
process.env.VITEST = "1";

const fs = require("fs");
const path = require("path");
const Module = require("module");

const cliPath = path.resolve(__dirname, "..", "vendor", "stem-branch", "dist", "cli.cjs");
if (!fs.existsSync(cliPath)) {
  process.stderr.write("vendored seven-governors CLI is missing\n");
  process.exit(2);
}

const source = fs.readFileSync(cliPath, "utf8").replace(
  "if (!process.env?.VITEST) {\n  main();\n}",
  "module.exports.getSevenGovernorsChart = getSevenGovernorsChart;\nif (!process.env?.VITEST) {\n  main();\n}",
);
const loaded = new Module(cliPath);
loaded.filename = cliPath;
loaded.paths = Module._nodeModulePaths(path.dirname(cliPath));
loaded._compile(source, cliPath);
const getSevenGovernorsChart = loaded.exports.getSevenGovernorsChart;
if (typeof getSevenGovernorsChart !== "function") {
  process.stderr.write("getSevenGovernorsChart is not available from the vendored CLI\n");
  process.exit(2);
}

const input = JSON.parse(fs.readFileSync(0, "utf8"));
const date = new Date(input.date);
if (Number.isNaN(date.getTime())) {
  process.stderr.write("invalid date\n");
  process.exit(2);
}
const chart = getSevenGovernorsChart(
  date,
  { lat: Number(input.lat), lon: Number(input.lng) },
  {
    ketuMode: input.ketuMode || "apogee",
    siderealMode: input.siderealMode || { type: "modern" },
  },
);
process.stdout.write(JSON.stringify({ sevenGovernors: chart }));