refactor(cli): improve terminal clearing in interactive menu

index.ts

@@ -27,9 +27,10 @@ function showHelp() {
 ${BOLD}gai${RESET} — AI-powered git commit message generator
 
 ${BOLD}Usage:${RESET}
-  gai                Generate commit message for staged/changed files
-  gai --auto         Auto-stage all changed files
-  gai --dry-run      Generate message without committing
+  gai                Open interactive menu
+  gai commit         Generate commit message for staged/changed files
+  gai commit --auto  Auto-stage all changed files
+  gai commit -d      Generate message without committing
   gai config         Configure API settings
   gai --help         Show this help message
   gai --version      Show version
@@ -38,7 +39,7 @@ ${BOLD}Configuration:${RESET}
   Set via ${CYAN}gai config${RESET} or environment variables:
     GAI_API_KEY      OpenAI-compatible API key
     GAI_API_BASE     API base URL (default: https://api.deepseek.com/v1)
-    GAI_MODEL        Model name (default: deepseek-v4-flash)
+    GAI_MODEL        Model name (default: deepseek-chat)
     GAI_MAX_TOKENS   Max tokens (default: 500)
     GAI_TEMPERATURE  Temperature (default: 0.7)
 `);
@@ -119,11 +120,6 @@ async function editMessage(current: string): Promise<string | null> {
   const ENTER = "\r";
   const CTRL_C = "\x03";
   const BACKSPACE = "\x7f";
-  const DELETE = "\x1b[3~";
-  const LEFT = "\x1b[D";
-  const RIGHT = "\x1b[C";
-  const HOME = "\x1b[H" /* or \x01 */;
-  const END = "\x1b[F" /* or \x05 */;
 
   function render() {
     process.stdout.write("\x1b[2K\r  > " + buffer);
@@ -253,25 +249,151 @@ async function editMessage(current: string): Promise<string | null> {
   });
 }
 
-async function main() {
-  if (args.includes("--help") || args.includes("-h")) {
-    showHelp();
-    return;
+function printCommitResult(
+  result: { branch: string; hash: string; files: number; insertions: number; deletions: number },
+  msg: string,
+) {
+  console.log(`\n  ${GREEN}${BOLD}✔ Committed successfully!${RESET}`);
+
+  const id = result.branch && result.hash
+    ? `${YELLOW}[${result.branch} ${result.hash}]${RESET}`
+    : result.hash
+      ? `${YELLOW}${result.hash}${RESET}`
+      : "";
+  console.log(`    ${id}  ${msg}`);
+
+  const parts: string[] = [];
+  if (result.files > 0) parts.push(`${YELLOW}${result.files} file${result.files > 1 ? "s" : ""} changed${RESET}`);
+  if (result.insertions > 0) parts.push(`${GREEN}${result.insertions} insertion${result.insertions > 1 ? "s" : ""}(+)${RESET}`);
+  if (result.deletions > 0) parts.push(`${RED}${result.deletions} deletion${result.deletions > 1 ? "s" : ""}(-)${RESET}`);
+  if (parts.length > 0) console.log(`    ${parts.join(", ")}`);
+}
+
+interface MenuAction {
+  key: string;
+  label: string;
+  description: string;
+}
+
+const MENU_ACTIONS: MenuAction[] = [
+  { key: "commit", label: "commit", description: "Generate AI commit message" },
+];
+
+async function showMenu(): Promise<void> {
+  const actions = MENU_ACTIONS;
+  let cursor = 0;
+
+  const headerLines = 4;
+
+  process.stdout.write(`\n  ${BOLD}gai${RESET}\n`);
+  process.stdout.write(`  ${DIM}↑/↓ navigate, space/enter select${RESET}\n\n`);
+
+  const totalLines = headerLines + actions.length;
+
+  function render() {
+    for (let i = 0; i < actions.length; i++) {
+      process.stdout.write("\x1b[2K\r");
+      const a = actions[i]!;
+      const pointer = i === cursor ? `${CYAN}❯${RESET} ` : "  ";
+      const dot = i === cursor ? `${GREEN}◉${RESET}` : `${DIM}○${RESET}`;
+      const name = i === cursor ? `${BOLD}${a.label}${RESET}` : a.label;
+      const desc = i === cursor ? a.description : `${DIM}${a.description}${RESET}`;
+      process.stdout.write(`${pointer} ${dot} ${name}${" ".repeat(Math.max(1, 14 - a.label.length))}${desc}\n`);
+    }
+    process.stdout.write(`\x1b[${actions.length}A`);
   }
 
-  if (args.includes("--version") || args.includes("-v")) {
-    console.log("gai v0.1.0");
-    return;
+  function clearMenu() {
+    process.stdout.write(`\x1b[${totalLines}A`);
+    for (let i = 0; i < totalLines; i++) {
+      process.stdout.write("\x1b[2K\x1b[1B");
+    }
+    process.stdout.write(`\x1b[${totalLines}A`);
   }
 
-  if (args[0] === "config") {
-    await handleConfig();
-    return;
+  if (!process.stdin.isTTY) {
+    console.error(`  ${RED}Error: Interactive menu requires a TTY.${RESET}`);
+    process.exit(1);
   }
 
-  const autoMode = args.includes("--auto") || args.includes("-a");
-  const dryRun = args.includes("--dry-run") || args.includes("-d");
+  const savedRaw = process.stdin.isRaw;
+  process.stdin.setRawMode(true);
+  process.stdin.resume();
+  process.stdout.write("\x1b[?25l");
 
+  render();
+
+  return new Promise((resolve) => {
+    let escapeBuf = "";
+
+    function handleSeq(seq: string) {
+      if (seq === "\x1b[A" || seq === "\x1bOA") {
+        if (cursor > 0) {
+          cursor--;
+          render();
+        }
+      } else if (seq === "\x1b[B" || seq === "\x1bOB") {
+        if (cursor < actions.length - 1) {
+          cursor++;
+          render();
+        }
+      }
+    }
+
+    process.stdin.on("data", (data: Buffer) => {
+      const key = data.toString();
+
+      if (key === "\x03") {
+        process.stdin.setRawMode(savedRaw === true);
+        process.stdin.pause();
+        process.stdin.removeAllListeners("data");
+        clearMenu();
+        process.stdout.write("\x1b[?25h");
+        resolve();
+        return;
+      }
+
+      if (key === "\x1b" || key.startsWith("\x1b[")) {
+        escapeBuf = key;
+        if (key.length >= 3) {
+          handleSeq(key);
+          escapeBuf = "";
+        }
+        return;
+      }
+
+      if (escapeBuf) {
+        escapeBuf += key;
+        if (/^[A-Za-z~]$/.test(key)) {
+          handleSeq(escapeBuf);
+          escapeBuf = "";
+        } else if (escapeBuf.length > 8) {
+          escapeBuf = "";
+        }
+        return;
+      }
+
+      if (key === " " || key === "\r") {
+        const selected = actions[cursor]!;
+        process.stdin.setRawMode(savedRaw === true);
+        process.stdin.pause();
+        process.stdin.removeAllListeners("data");
+
+        clearMenu();
+        process.stdout.write("\x1b[?25h");
+
+        if (selected.key === "commit") {
+          handleCommit(false, false).then(resolve);
+        } else {
+          resolve();
+        }
+        return;
+      }
+    });
+  });
+}
+
+async function handleCommit(autoMode: boolean, dryRun: boolean): Promise<void> {
   const config = await loadConfig();
 
   if (!config.apiKey) {
@@ -355,26 +477,6 @@ async function main() {
     return;
   }
 
-function printCommitResult(
-  result: { branch: string; hash: string; files: number; insertions: number; deletions: number },
-  msg: string,
-) {
-  console.log(`\n  ${GREEN}${BOLD}✔ Committed successfully!${RESET}`);
-
-  const id = result.branch && result.hash
-    ? `${YELLOW}[${result.branch} ${result.hash}]${RESET}`
-    : result.hash
-      ? `${YELLOW}${result.hash}${RESET}`
-      : "";
-  console.log(`    ${id}  ${msg}`);
-
-  const parts: string[] = [];
-  if (result.files > 0) parts.push(`${YELLOW}${result.files} file${result.files > 1 ? "s" : ""} changed${RESET}`);
-  if (result.insertions > 0) parts.push(`${GREEN}${result.insertions} insertion${result.insertions > 1 ? "s" : ""}(+)${RESET}`);
-  if (result.deletions > 0) parts.push(`${RED}${result.deletions} deletion${result.deletions > 1 ? "s" : ""}(-)${RESET}`);
-  if (parts.length > 0) console.log(`    ${parts.join(", ")}`);
-}
-
   const action = await confirmCommit(message);
 
   if (action === "y") {
@@ -412,6 +514,41 @@ function printCommitResult(
   }
 }
 
+async function main() {
+  if (args.includes("--help") || args.includes("-h")) {
+    showHelp();
+    return;
+  }
+
+  if (args.includes("--version") || args.includes("-v")) {
+    console.log("gai v0.1.0");
+    return;
+  }
+
+  const subcommand = args[0];
+
+  if (subcommand === "config") {
+    await handleConfig();
+    return;
+  }
+
+  if (subcommand === "commit") {
+    const autoMode = args.includes("--auto") || args.includes("-a");
+    const dryRun = args.includes("--dry-run") || args.includes("-d");
+    await handleCommit(autoMode, dryRun);
+    return;
+  }
+
+  if (!subcommand) {
+    await showMenu();
+    return;
+  }
+
+  console.error(`  ${RED}Unknown command: ${subcommand}${RESET}`);
+  showHelp();
+  process.exit(1);
+}
+
 main().catch((err) => {
   console.error(`  ${RED}Unexpected error: ${err}${RESET}`);
   process.exit(1);