Add config migration script (#48)

migrate-config.js

@@ -0,0 +1,48 @@
+import "dotenv/config";
+import fs from "node:fs";
+import readline from "node:readline";
+
+function readConfigIfExists(filePath) {
+  if (fs.existsSync(filePath)) {
+    return JSON.parse(fs.readFileSync(filePath));
+  } else {
+    return [];
+  }
+}
+
+function runMigration(cron) {
+  const configObject = {
+    twitchLogin: process.env.BROADCASTER_LOGIN,
+    cron: cron,
+    timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
+    discordWebhook: process.env.DISCORD_WEBHOOK_URL,
+    pollingInterval: process.env.POLLING_INTERVAL,
+    suppressUntitled: process.env.SUPPRESS_UNTITLED.toLowerCase() == "true",
+    showCreatedDate: process.env.SHOW_CREATED_DATE.toLowerCase() == "true",
+  };
+
+  const config = readConfigIfExists(".config.json");
+
+  config.push(configObject);
+
+  fs.writeFileSync(".config.json", JSON.stringify(config, null, 2));
+  console.log(JSON.stringify(config, null, 2));
+
+  const newEnv = `TWITCH_CLIENT_ID=${process.env.TWITCH_CLIENT_ID ?? "[0-9a-z]"}\nTWITCH_CLIENT_SECRET=${process.env.TWITCH_CLIENT_SECRET ?? "[0-9a-z]"}`;
+
+  fs.writeFileSync(".env", newEnv);
+  console.log(newEnv);
+}
+
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout,
+});
+
+rl.question(
+  "Please enter the cron expression you want to have it run as:\n",
+  (cron) => {
+    rl.close();
+    runMigration(cron);
+  },
+);