#!/usr/bin/env node

import { readFileSync } from "fs";
import { parseArgs } from "util";
import { getCredential } from "../src/azure.js";

let config = {};

async function main() {
  // Parse command line arguments to determine which credential type to use
  const args = parseArgs({
    options: {
      help: { type: "boolean", short: "h" },
      "credential-type": { type: "string", short: "t", default: "default" },
      "config": { type: "string", short: "c", default: "app-config.json" },
      "tenant-id": { type: "string", default: process.env.AZURE_TENANT_ID || "" },
      "client-id": { type: "string", default: process.env.AZURE_CLIENT_ID || "" },
      "client-secret": { type: "string", default: process.env.AZURE_CLIENT_SECRET || "" },
      "client-secret-file": { type: "string", default: process.env.AZURE_CLIENT_SECRET_FILE || "" },
    },
  });

  if (args.values.help) {
    console.log("Usage: login.mjs [options]");
    console.log("Options:");
    console.log("  -h, --help                Show this help message");
    console.log("  -c, --config              Path to the configuration file (default: config.js)");
    console.log("  --tenant-id               Azure Tenant ID");
    console.log("  --client-id               Azure Client ID");
    console.log("  --client-secret           Azure Client Secret");
    console.log("  --client-secret-file      Path to file containing Azure Client Secret");
    console.log("  -t, --credential-type     Specify the credential type to use (default: default)");
    process.exit(0);
  }

  // First, check if configuration file is spefiedd
  const configPath = args.values.config;
  if (configPath) {
    // Load the JSON configuration file using readFileSync
    const configFile = readFileSync(configPath, "utf-8");
    config = JSON.parse(configFile);
  }

  // Process command line overrides
  if (args.values["tenant-id"]) {
    config.tenantId = args.values["tenant-id"];
  }
  if (args.values["client-id"]) {
    config.clientId = args.values["client-id"];
  }
  if (args.values["client-secret"]) {
    config.clientSecret = args.values["client-secret"];
  } else if (args.values["client-secret-file"]) {
    // Read client secret from file
    config.clientSecret = readFileSync(args.values["client-secret-file"], "utf-8").trim();
  }

  // Create the appropriate credential based on the specified type
  const credential = await getCredential(args.values["credential-type"], config);

  console.log("Successfully obtained credential:", credential);
}

main().catch((error) => {
  console.error("An error occurred:", error);
  process.exit(1);
});