src/proxy_app/launcher_tui.py

"""
Interactive TUI launcher for the LLM API Key Proxy.
Provides a beautiful Rich-based interface for configuration and execution.
"""

import json
import os
import sys
from pathlib import Path
from rich.console import Console
from rich.prompt import IntPrompt, Prompt
from rich.panel import Panel
from rich.text import Text
from dotenv import load_dotenv, set_key

console = Console()


def _get_env_file() -> Path:
    """
    Get .env file path (lightweight - no heavy imports).

    Returns:
        Path to .env file - EXE directory if frozen, else current working directory
    """
    if getattr(sys, "frozen", False):
        # Running as PyInstaller EXE - use EXE's directory
        return Path(sys.executable).parent / ".env"
    # Running as script - use current working directory
    return Path.cwd() / ".env"


def clear_screen(subtitle: str = ""):
    """
    Cross-platform terminal clear with optional header.

    Uses native OS commands instead of ANSI escape sequences:
    - Windows (conhost & Windows Terminal): cls
    - Unix-like systems (Linux, Mac): clear

    Args:
        subtitle: If provided, displays a header panel with this subtitle.
                  If empty/None, just clears the screen.
    """
    os.system("cls" if os.name == "nt" else "clear")
    if subtitle:
        console.print(
            Panel(
                f"[bold cyan]{subtitle}[/bold cyan]",
                title="--- API Key Proxy ---",
            )
        )


class LauncherConfig:
    """Manages launcher_config.json (host, port, logging only)"""

    def __init__(self, config_path: Path = Path("launcher_config.json")):
        self.config_path = config_path
        self.defaults = {
            "host": "127.0.0.1",
            "port": 8000,
            "enable_request_logging": False,
        }
        self.config = self.load()

    def load(self) -> dict:
        """Load config from file or create with defaults."""
        if self.config_path.exists():
            try:
                with open(self.config_path, "r") as f:
                    config = json.load(f)
                # Merge with defaults for any missing keys
                for key, value in self.defaults.items():
                    if key not in config:
                        config[key] = value
                return config
            except (json.JSONDecodeError, IOError):
                return self.defaults.copy()
        return self.defaults.copy()

    def save(self):
        """Save current config to file."""
        import datetime

        self.config["last_updated"] = datetime.datetime.now().isoformat()
        try:
            with open(self.config_path, "w") as f:
                json.dump(self.config, f, indent=2)
        except IOError as e:
            console.print(f"[red]Error saving config: {e}[/red]")

    def update(self, **kwargs):
        """Update config values."""
        self.config.update(kwargs)
        self.save()

    @staticmethod
    def update_proxy_api_key(new_key: str):
        """Update PROXY_API_KEY in .env only"""
        env_file = _get_env_file()
        set_key(str(env_file), "PROXY_API_KEY", new_key)
        load_dotenv(dotenv_path=env_file, override=True)


class SettingsDetector:
    """Detects settings from .env for display"""

    @staticmethod
    def _load_local_env() -> dict:
        """Load environment variables from local .env file only"""
        env_file = _get_env_file()
        env_dict = {}
        if not env_file.exists():
            return env_dict
        try:
            with open(env_file, "r", encoding="utf-8") as f:
                for line in f:
                    line = line.strip()
                    if not line or line.startswith("#"):
                        continue
                    if "=" in line:
                        key, _, value = line.partition("=")
                        key, value = key.strip(), value.strip()
                        if value and value[0] in ('"', "'") and value[-1] == value[0]:
                            value = value[1:-1]
                        env_dict[key] = value
        except (IOError, OSError):
            pass
        return env_dict

    @staticmethod
    def get_all_settings() -> dict:
        """Returns comprehensive settings overview (includes provider_settings which triggers heavy imports)"""
        return {
            "credentials": SettingsDetector.detect_credentials(),
            "custom_bases": SettingsDetector.detect_custom_api_bases(),
            "model_definitions": SettingsDetector.detect_model_definitions(),
            "concurrency_limits": SettingsDetector.detect_concurrency_limits(),
            "model_filters": SettingsDetector.detect_model_filters(),
            "provider_settings": SettingsDetector.detect_provider_settings(),
        }

    @staticmethod
    def get_basic_settings() -> dict:
        """Returns basic settings overview without provider_settings (avoids heavy imports)"""
        return {
            "credentials": SettingsDetector.detect_credentials(),
            "custom_bases": SettingsDetector.detect_custom_api_bases(),
            "model_definitions": SettingsDetector.detect_model_definitions(),
            "concurrency_limits": SettingsDetector.detect_concurrency_limits(),
            "model_filters": SettingsDetector.detect_model_filters(),
        }

    @staticmethod
    def detect_credentials() -> dict:
        """Detect API keys and OAuth credentials"""
        from pathlib import Path

        providers = {}

        # Scan for API keys
        env_vars = SettingsDetector._load_local_env()
        for key, value in env_vars.items():
            if "_API_KEY" in key and key != "PROXY_API_KEY":
                provider = key.split("_API_KEY")[0].lower()
                if provider not in providers:
                    providers[provider] = {"api_keys": 0, "oauth": 0, "custom": False}
                providers[provider]["api_keys"] += 1

        # Scan for OAuth credentials
        oauth_dir = Path("oauth_credentials")
        if oauth_dir.exists():
            for file in oauth_dir.glob("*_oauth_*.json"):
                provider = file.name.split("_oauth_")[0]
                if provider not in providers:
                    providers[provider] = {"api_keys": 0, "oauth": 0, "custom": False}
                providers[provider]["oauth"] += 1

        # Mark custom providers (have API_BASE set)
        for provider in providers:
            if os.getenv(f"{provider.upper()}_API_BASE"):
                providers[provider]["custom"] = True

        return providers

    @staticmethod
    def detect_custom_api_bases() -> dict:
        """Detect custom API base URLs (not in hardcoded map)"""
        from proxy_app.provider_urls import PROVIDER_URL_MAP

        bases = {}
        env_vars = SettingsDetector._load_local_env()
        for key, value in env_vars.items():
            if key.endswith("_API_BASE"):
                provider = key.replace("_API_BASE", "").lower()
                # Only include if NOT in hardcoded map
                if provider not in PROVIDER_URL_MAP:
                    bases[provider] = value
        return bases

    @staticmethod
    def detect_model_definitions() -> dict:
        """Detect provider model definitions"""
        models = {}
        env_vars = SettingsDetector._load_local_env()
        for key, value in env_vars.items():
            if key.endswith("_MODELS"):
                provider = key.replace("_MODELS", "").lower()
                try:
                    parsed = json.loads(value)
                    if isinstance(parsed, dict):
                        models[provider] = len(parsed)
                    elif isinstance(parsed, list):
                        models[provider] = len(parsed)
                except (json.JSONDecodeError, ValueError):
                    pass
        return models

    @staticmethod
    def detect_concurrency_limits() -> dict:
        """Detect max concurrent requests per key"""
        limits = {}
        env_vars = SettingsDetector._load_local_env()
        for key, value in env_vars.items():
            if key.startswith("MAX_CONCURRENT_REQUESTS_PER_KEY_"):
                provider = key.replace("MAX_CONCURRENT_REQUESTS_PER_KEY_", "").lower()
                try:
                    limits[provider] = int(value)
                except (json.JSONDecodeError, ValueError):
                    pass
        return limits

    @staticmethod
    def detect_model_filters() -> dict:
        """Detect active model filters (basic info only: defined or not)"""
        filters = {}
        env_vars = SettingsDetector._load_local_env()
        for key, value in env_vars.items():
            if key.startswith("IGNORE_MODELS_") or key.startswith("WHITELIST_MODELS_"):
                filter_type = "ignore" if key.startswith("IGNORE") else "whitelist"
                provider = key.replace(f"{filter_type.upper()}_MODELS_", "").lower()
                if provider not in filters:
                    filters[provider] = {"has_ignore": False, "has_whitelist": False}
                if filter_type == "ignore":
                    filters[provider]["has_ignore"] = True
                else:
                    filters[provider]["has_whitelist"] = True
        return filters

    @staticmethod
    def detect_provider_settings() -> dict:
        """Detect provider-specific settings (Antigravity, Gemini CLI)"""
        try:
            from proxy_app.settings_tool import PROVIDER_SETTINGS_MAP
        except ImportError:
            # Fallback for direct execution or testing
            from .settings_tool import PROVIDER_SETTINGS_MAP

        provider_settings = {}
        env_vars = SettingsDetector._load_local_env()

        for provider, definitions in PROVIDER_SETTINGS_MAP.items():
            modified_count = 0
            for key, definition in definitions.items():
                env_value = env_vars.get(key)
                if env_value is not None:
                    # Check if value differs from default
                    default = definition.get("default")
                    setting_type = definition.get("type", "str")

                    try:
                        if setting_type == "bool":
                            current = env_value.lower() in ("true", "1", "yes")
                        elif setting_type == "int":
                            current = int(env_value)
                        else:
                            current = env_value

                        if current != default:
                            modified_count += 1
                    except (ValueError, AttributeError):
                        pass

            if modified_count > 0:
                provider_settings[provider] = modified_count

        return provider_settings


class LauncherTUI:
    """Main launcher interface"""

    def __init__(self):
        self.console = Console()
        self.config = LauncherConfig()
        self.running = True
        self.env_file = _get_env_file()
        # Load .env file to ensure environment variables are available
        load_dotenv(dotenv_path=self.env_file, override=True)

    def needs_onboarding(self) -> bool:
        """Check if onboarding is needed"""
        return not self.env_file.exists() or not os.getenv("PROXY_API_KEY")

    def run(self):
        """Main TUI loop"""
        while self.running:
            self.show_main_menu()

    def show_main_menu(self):
        """Display main menu and handle selection"""
        clear_screen()

        # Detect basic settings (excludes provider_settings to avoid heavy imports)
        settings = SettingsDetector.get_basic_settings()
        credentials = settings["credentials"]
        custom_bases = settings["custom_bases"]

        # Check if setup is needed
        show_warning = self.needs_onboarding()

        # Build title with GitHub link
        self.console.print(
            Panel.fit(
                "[bold cyan]🚀 LLM API Key Proxy - Interactive Launcher[/bold cyan]",
                border_style="cyan",
            )
        )
        self.console.print(
            "[dim]GitHub: [blue underline]https://github.com/Mirrowel/LLM-API-Key-Proxy[/blue underline][/dim]"
        )

        # Show warning if .env file doesn't exist
        if show_warning:
            self.console.print()
            self.console.print(
                Panel(
                    Text.from_markup(
                        "⚠️  [bold yellow]INITIAL SETUP REQUIRED[/bold yellow]\n\n"
                        "The proxy needs initial configuration:\n"
                        "  ❌ No .env file found\n\n"
                        "Why this matters:\n"
                        "  • The .env file stores your credentials and settings\n"
                        "  • PROXY_API_KEY protects your proxy from unauthorized access\n"
                        "  • Provider API keys enable LLM access\n\n"
                        "What to do:\n"
                        '  1. Select option "3. Manage Credentials" to launch the credential tool\n'
                        "  2. The tool will create .env and set up PROXY_API_KEY automatically\n"
                        "  3. You can add provider credentials (API keys or OAuth)\n\n"
                        "⚠️  Note: The credential tool adds PROXY_API_KEY by default.\n"
                        "   You can remove it later if you want an unsecured proxy."
                    ),
                    border_style="yellow",
                    expand=False,
                )
            )
        # Show security warning if PROXY_API_KEY is missing (but .env exists)
        elif not os.getenv("PROXY_API_KEY"):
            self.console.print()
            self.console.print(
                Panel(
                    Text.from_markup(
                        "⚠️  [bold red]SECURITY WARNING: PROXY_API_KEY Not Set[/bold red]\n\n"
                        "Your proxy is currently UNSECURED!\n"
                        "Anyone can access it without authentication.\n\n"
                        "This is a serious security risk if your proxy is accessible\n"
                        "from the internet or untrusted networks.\n\n"
                        "👉 [bold]Recommended:[/bold] Set PROXY_API_KEY in .env file\n"
                        '   Use option "2. Configure Proxy Settings" → "3. Set Proxy API Key"\n'
                        '   or option "3. Manage Credentials"'
                    ),
                    border_style="red",
                    expand=False,
                )
            )

        # Show config
        self.console.print()
        self.console.print("[bold]📋 Proxy Configuration[/bold]")
        self.console.print("━" * 70)
        self.console.print(f"   Host:                {self.config.config['host']}")
        self.console.print(f"   Port:                {self.config.config['port']}")
        self.console.print(
            f"   Request Logging:     {'✅ Enabled' if self.config.config['enable_request_logging'] else '❌ Disabled'}"
        )

        # Show actual API key value
        proxy_key = os.getenv("PROXY_API_KEY")
        if proxy_key:
            self.console.print(f"   Proxy API Key:       {proxy_key}")
        else:
            self.console.print("   Proxy API Key:       [red]Not Set (INSECURE!)[/red]")

        # Show status summary
        self.console.print()
        self.console.print("[bold]📊 Status Summary[/bold]")
        self.console.print("━" * 70)
        provider_count = len(credentials)
        custom_count = len(custom_bases)

        self.console.print(f"   Providers:           {provider_count} configured")
        self.console.print(f"   Custom Providers:    {custom_count} configured")
        # Note: provider_settings detection is deferred to avoid heavy imports on startup
        has_advanced = bool(
            settings["model_definitions"]
            or settings["concurrency_limits"]
            or settings["model_filters"]
        )
        self.console.print(
            f"   Advanced Settings:   {'Active (view in menu 4)' if has_advanced else 'None (view menu 4 for details)'}"
        )

        # Show menu
        self.console.print()
        self.console.print("━" * 70)
        self.console.print()
        self.console.print("[bold]🎯 Main Menu[/bold]")
        self.console.print()
        if show_warning:
            self.console.print("   1. ▶️  Run Proxy Server")
            self.console.print("   2. ⚙️  Configure Proxy Settings")
            self.console.print(
                "   3. 🔑 Manage Credentials            ⬅️  [bold yellow]Start here![/bold yellow]"
            )
        else:
            self.console.print("   1. ▶️  Run Proxy Server")
            self.console.print("   2. ⚙️  Configure Proxy Settings")
            self.console.print("   3. 🔑 Manage Credentials")

        self.console.print("   4. 📊 View Provider & Advanced Settings")
        self.console.print("   5. 📈 View Quota & Usage Stats (Alpha)")
        self.console.print("   6. 🔄 Reload Configuration")
        self.console.print("   7. ℹ️  About")
        self.console.print("   8. 🚪 Exit")

        self.console.print()
        self.console.print("━" * 70)
        self.console.print()

        choice = Prompt.ask(
            "Select option",
            choices=["1", "2", "3", "4", "5", "6", "7", "8"],
            show_choices=False,
        )

        if choice == "1":
            self.run_proxy()
        elif choice == "2":
            self.show_config_menu()
        elif choice == "3":
            self.launch_credential_tool()
        elif choice == "4":
            self.show_provider_settings_menu()
        elif choice == "5":
            self.launch_quota_viewer()
        elif choice == "6":
            load_dotenv(dotenv_path=_get_env_file(), override=True)
            self.config = LauncherConfig()  # Reload config
            self.console.print("\n[green]✅ Configuration reloaded![/green]")
        elif choice == "7":
            self.show_about()
        elif choice == "8":
            self.running = False
            sys.exit(0)

    def confirm_setting_change(self, setting_name: str, warning_lines: list) -> bool:
        """
        Display a warning and require Y/N (case-sensitive) confirmation.
        Re-prompts until user enters exactly 'Y' or 'N'.
        Returns True only if user enters 'Y'.
        """
        clear_screen()
        self.console.print()
        self.console.print(
            Panel(
                Text.from_markup(
                    f"[bold yellow]⚠️  WARNING: You are about to change the {setting_name}[/bold yellow]\n\n"
                    + "\n".join(warning_lines)
                    + "\n\n[bold]If you are not sure about changing this - don't.[/bold]"
                ),
                border_style="yellow",
                expand=False,
            )
        )

        while True:
            response = Prompt.ask(
                "Enter [bold]Y[/bold] to confirm, [bold]N[/bold] to cancel (case-sensitive)"
            )
            if response == "Y":
                return True
            elif response == "N":
                self.console.print("\n[dim]Operation cancelled.[/dim]")
                return False
            else:
                self.console.print(
                    "[red]Please enter exactly 'Y' or 'N' (case-sensitive)[/red]"
                )

    def show_config_menu(self):
        """Display configuration sub-menu"""
        while True:
            clear_screen()

            self.console.print(
                Panel.fit(
                    "[bold cyan]⚙️  Proxy Configuration[/bold cyan]", border_style="cyan"
                )
            )

            self.console.print()
            self.console.print("[bold]📋 Current Settings[/bold]")
            self.console.print("━" * 70)
            self.console.print(f"   Host:                {self.config.config['host']}")
            self.console.print(f"   Port:                {self.config.config['port']}")
            self.console.print(
                f"   Request Logging:     {'✅ Enabled' if self.config.config['enable_request_logging'] else '❌ Disabled'}"
            )
            self.console.print(
                f"   Proxy API Key:       {'✅ Set' if os.getenv('PROXY_API_KEY') else '❌ Not Set'}"
            )

            self.console.print()
            self.console.print("━" * 70)
            self.console.print()
            self.console.print("[bold]⚙️  Configuration Options[/bold]")
            self.console.print()
            self.console.print("   1. 🌐 Set Host IP")
            self.console.print("   2. 🔌 Set Port")
            self.console.print("   3. 🔑 Set Proxy API Key")
            self.console.print("   4. 📝 Toggle Request Logging")
            self.console.print("   5. 🔄 Reset to Default Settings")
            self.console.print("   6. ↩️  Back to Main Menu")

            self.console.print()
            self.console.print("━" * 70)
            self.console.print()

            choice = Prompt.ask(
                "Select option",
                choices=["1", "2", "3", "4", "5", "6"],
                show_choices=False,
            )

            if choice == "1":
                # Show warning and require confirmation
                confirmed = self.confirm_setting_change(
                    "Host IP",
                    [
                        "Changing the host IP affects which network interfaces the proxy listens on:",
                        "  • [cyan]127.0.0.1[/cyan] = Local access only (recommended for development)",
                        "  • [cyan]0.0.0.0[/cyan] = Accessible from all network interfaces",
                        "",
                        "Applications configured to connect to the old host may fail to connect.",
                    ],
                )
                if not confirmed:
                    continue

                new_host = Prompt.ask(
                    "Enter new host IP", default=self.config.config["host"]
                )
                self.config.update(host=new_host)
                self.console.print(f"\n[green]✅ Host updated to: {new_host}[/green]")
            elif choice == "2":
                # Show warning and require confirmation
                confirmed = self.confirm_setting_change(
                    "Port",
                    [
                        "Changing the port will affect all applications currently configured",
                        "to connect to your proxy on the existing port.",
                        "",
                        "Applications using the old port will fail to connect.",
                    ],
                )
                if not confirmed:
                    continue

                new_port = IntPrompt.ask(
                    "Enter new port", default=self.config.config["port"]
                )
                if 1 <= new_port <= 65535:
                    self.config.update(port=new_port)
                    self.console.print(
                        f"\n[green]✅ Port updated to: {new_port}[/green]"
                    )
                else:
                    self.console.print("\n[red]❌ Port must be between 1-65535[/red]")
            elif choice == "3":
                # Show warning and require confirmation
                confirmed = self.confirm_setting_change(
                    "Proxy API Key",
                    [
                        "This is the authentication key that applications use to access your proxy.",
                        "",
                        "[bold red]⚠️  Changing this will BREAK all applications currently configured",
                        "   with the existing API key![/bold red]",
                        "",
                        "[bold cyan]💡 If you want to add provider API keys (OpenAI, Gemini, etc.),",
                        '   go to "3. 🔑 Manage Credentials" in the main menu instead.[/bold cyan]',
                    ],
                )
                if not confirmed:
                    continue

                current = os.getenv("PROXY_API_KEY", "")
                new_key = Prompt.ask(
                    "Enter new Proxy API Key (leave empty to disable authentication)",
                    default=current,
                )

                if new_key != current:
                    # If setting to empty, show additional warning
                    if not new_key:
                        self.console.print(
                            "\n[bold red]⚠️  Authentication will be DISABLED - anyone can access your proxy![/bold red]"
                        )
                        Prompt.ask("Press Enter to continue", default="")

                    LauncherConfig.update_proxy_api_key(new_key)

                    if new_key:
                        self.console.print(
                            "\n[green]✅ Proxy API Key updated successfully![/green]"
                        )
                        self.console.print("   Updated in .env file")
                    else:
                        self.console.print(
                            "\n[yellow]⚠️  Proxy API Key cleared - authentication disabled![/yellow]"
                        )
                        self.console.print("   Updated in .env file")
                else:
                    self.console.print("\n[yellow]No changes made[/yellow]")
            elif choice == "4":
                current = self.config.config["enable_request_logging"]
                self.config.update(enable_request_logging=not current)
                self.console.print(
                    f"\n[green]✅ Request Logging {'enabled' if not current else 'disabled'}![/green]"
                )
            elif choice == "5":
                # Reset to Default Settings
                # Define defaults
                default_host = "127.0.0.1"
                default_port = 8000
                default_logging = False
                default_api_key = "VerysecretKey"

                # Get current values
                current_host = self.config.config["host"]
                current_port = self.config.config["port"]
                current_logging = self.config.config["enable_request_logging"]
                current_api_key = os.getenv("PROXY_API_KEY", "")

                # Build comparison table
                warning_lines = [
                    "This will reset ALL proxy settings to their defaults:",
                    "",
                    "[bold]   Setting              Current Value         →  Default Value[/bold]",
                    "   " + "─" * 62,
                    f"   Host IP              {current_host:20} →  {default_host}",
                    f"   Port                 {str(current_port):20} →  {default_port}",
                    f"   Request Logging      {'Enabled':20} →  Disabled"
                    if current_logging
                    else f"   Request Logging      {'Disabled':20} →  Disabled",
                    f"   Proxy API Key        {current_api_key[:20]:20} →  {default_api_key}",
                    "",
                    "[bold red]⚠️  This may break applications configured with current settings![/bold red]",
                ]

                confirmed = self.confirm_setting_change(
                    "Settings (Reset to Defaults)", warning_lines
                )
                if not confirmed:
                    continue

                # Apply defaults
                self.config.update(
                    host=default_host,
                    port=default_port,
                    enable_request_logging=default_logging,
                )
                LauncherConfig.update_proxy_api_key(default_api_key)

                self.console.print(
                    "\n[green]✅ All settings have been reset to defaults![/green]"
                )
                self.console.print(f"   Host:             {default_host}")
                self.console.print(f"   Port:             {default_port}")
                self.console.print(f"   Request Logging:  Disabled")
                self.console.print(f"   Proxy API Key:    {default_api_key}")
            elif choice == "6":
                break

    def show_provider_settings_menu(self):
        """Display provider/advanced settings (read-only + launch tool)"""
        clear_screen()

        # Use basic settings to avoid heavy imports - provider_settings deferred to Settings Tool
        settings = SettingsDetector.get_basic_settings()

        credentials = settings["credentials"]
        custom_bases = settings["custom_bases"]
        model_defs = settings["model_definitions"]
        concurrency = settings["concurrency_limits"]
        filters = settings["model_filters"]

        self.console.print(
            Panel.fit(
                "[bold cyan]📊 Provider & Advanced Settings[/bold cyan]",
                border_style="cyan",
            )
        )

        # Configured Providers
        self.console.print()
        self.console.print("[bold]📊 Configured Providers[/bold]")
        self.console.print("━" * 70)
        if credentials:
            for provider, info in credentials.items():
                provider_name = provider.title()
                parts = []
                if info["api_keys"] > 0:
                    parts.append(
                        f"{info['api_keys']} API key{'s' if info['api_keys'] > 1 else ''}"
                    )
                if info["oauth"] > 0:
                    parts.append(
                        f"{info['oauth']} OAuth credential{'s' if info['oauth'] > 1 else ''}"
                    )

                display = " + ".join(parts)
                if info["custom"]:
                    display += " (Custom)"

                self.console.print(f"   ✅ {provider_name:20} {display}")
        else:
            self.console.print("   [dim]No providers configured[/dim]")

        # Custom API Bases
        if custom_bases:
            self.console.print()
            self.console.print("[bold]🌐 Custom API Bases[/bold]")
            self.console.print("━" * 70)
            for provider, base in custom_bases.items():
                self.console.print(f"   • {provider:15} {base}")

        # Model Definitions
        if model_defs:
            self.console.print()
            self.console.print("[bold]📦 Provider Model Definitions[/bold]")
            self.console.print("━" * 70)
            for provider, count in model_defs.items():
                self.console.print(
                    f"   • {provider:15} {count} model{'s' if count > 1 else ''} configured"
                )

        # Concurrency Limits
        if concurrency:
            self.console.print()
            self.console.print("[bold]⚡ Concurrency Limits[/bold]")
            self.console.print("━" * 70)
            for provider, limit in concurrency.items():
                self.console.print(f"   • {provider:15} {limit} requests/key")
            self.console.print("   • Default:        1 request/key (all others)")

        # Model Filters (basic info only)
        if filters:
            self.console.print()
            self.console.print("[bold]🎯 Model Filters[/bold]")
            self.console.print("━" * 70)
            for provider, filter_info in filters.items():
                status_parts = []
                if filter_info["has_whitelist"]:
                    status_parts.append("Whitelist")
                if filter_info["has_ignore"]:
                    status_parts.append("Ignore list")
                status = " + ".join(status_parts) if status_parts else "None"
                self.console.print(f"   • {provider:15} ✅ {status}")

        # Provider-Specific Settings (deferred to Settings Tool to avoid heavy imports)
        self.console.print()
        self.console.print("[bold]🔬 Provider-Specific Settings[/bold]")
        self.console.print("━" * 70)
        self.console.print(
            "   [dim]Launch Settings Tool to view/configure provider-specific settings[/dim]"
        )

        # Actions
        self.console.print()
        self.console.print("━" * 70)
        self.console.print()
        self.console.print("[bold]💡 Actions[/bold]")
        self.console.print()
        self.console.print(
            "   1. 🔧 Launch Settings Tool      (configure advanced settings)"
        )
        self.console.print("   2. ↩️  Back to Main Menu")

        self.console.print()
        self.console.print("━" * 70)
        self.console.print(
            "[dim]ℹ️  Advanced settings are stored in .env file.\n   Use the Settings Tool to configure them interactively.[/dim]"
        )
        self.console.print()
        self.console.print(
            "[dim]⚠️  Note: Settings Tool supports only common configuration types.\n   For complex settings, edit .env directly.[/dim]"
        )
        self.console.print()

        choice = Prompt.ask("Select option", choices=["1", "2"], show_choices=False)

        if choice == "1":
            self.launch_settings_tool()
        # choice == "2" returns to main menu

    def launch_credential_tool(self):
        """Launch credential management tool"""
        import time

        # CRITICAL: Show full loading UI to replace the 6-7 second blank wait
        clear_screen()

        _start_time = time.time()

        # Show the same header as standalone mode
        self.console.print("━" * 70)
        self.console.print("Interactive Credential Setup Tool")
        self.console.print("GitHub: https://github.com/Mirrowel/LLM-API-Key-Proxy")
        self.console.print("━" * 70)
        self.console.print("Loading credential management components...")

        # Now import with spinner (this is where the 6-7 second delay happens)
        with self.console.status("Initializing credential tool...", spinner="dots"):
            from rotator_library.credential_tool import (
                run_credential_tool,
                _ensure_providers_loaded,
            )

            _, PROVIDER_PLUGINS = _ensure_providers_loaded()
        self.console.print("✓ Credential tool initialized")

        _elapsed = time.time() - _start_time
        self.console.print(
            f"✓ Tool ready in {_elapsed:.2f}s ({len(PROVIDER_PLUGINS)} providers available)"
        )

        # Small delay to let user see the ready message
        time.sleep(0.5)

        # Run the tool with from_launcher=True to skip duplicate loading screen
        run_credential_tool(from_launcher=True)
        # Reload environment after credential tool
        load_dotenv(dotenv_path=_get_env_file(), override=True)

    def launch_settings_tool(self):
        """Launch settings configuration tool"""
        import time

        clear_screen()

        self.console.print("━" * 70)
        self.console.print("Advanced Settings Configuration Tool")
        self.console.print("━" * 70)

        _start_time = time.time()

        with self.console.status("Initializing settings tool...", spinner="dots"):
            from proxy_app.settings_tool import run_settings_tool

        _elapsed = time.time() - _start_time
        self.console.print(f"✓ Settings tool ready in {_elapsed:.2f}s")

        time.sleep(0.3)

        run_settings_tool()
        # Reload environment after settings tool
        load_dotenv(dotenv_path=_get_env_file(), override=True)

    def launch_quota_viewer(self):
        """Launch the quota stats viewer"""
        clear_screen()

        self.console.print("━" * 70)
        self.console.print("Quota & Usage Statistics Viewer")
        self.console.print("━" * 70)
        self.console.print()

        # Import the lightweight viewer (no heavy imports)
        from proxy_app.quota_viewer import run_quota_viewer

        run_quota_viewer()

    def show_about(self):
        """Display About page with project information"""
        clear_screen()

        self.console.print(
            Panel.fit(
                "[bold cyan]ℹ️  About LLM API Key Proxy[/bold cyan]", border_style="cyan"
            )
        )

        self.console.print()
        self.console.print("[bold]📦 Project Information[/bold]")
        self.console.print("━" * 70)
        self.console.print("   [bold cyan]LLM API Key Proxy[/bold cyan]")
        self.console.print(
            "   A lightweight, high-performance proxy server for managing"
        )
        self.console.print("   LLM API keys with automatic rotation and OAuth support")
        self.console.print()
        self.console.print(
            "   [dim]GitHub:[/dim] [blue underline]https://github.com/Mirrowel/LLM-API-Key-Proxy[/blue underline]"
        )

        self.console.print()
        self.console.print("[bold]✨ Key Features[/bold]")
        self.console.print("━" * 70)
        self.console.print(
            "   • [green]Smart Key Rotation[/green] - Automatic rotation across multiple API keys"
        )
        self.console.print(
            "   • [green]OAuth Support[/green] - Automated OAuth flows for supported providers"
        )
        self.console.print(
            "   • [green]Multiple Providers[/green] - Support for 10+ LLM providers"
        )
        self.console.print(
            "   • [green]Custom Providers[/green] - Easy integration of custom OpenAI-compatible APIs"
        )
        self.console.print(
            "   • [green]Advanced Filtering[/green] - Model whitelists and ignore lists per provider"
        )
        self.console.print(
            "   • [green]Concurrency Control[/green] - Per-key rate limiting and request management"
        )
        self.console.print(
            "   • [green]Cost Tracking[/green] - Track usage and costs across all providers"
        )
        self.console.print(
            "   • [green]Interactive TUI[/green] - Beautiful terminal interface for easy configuration"
        )

        self.console.print()
        self.console.print("[bold]📝 License & Credits[/bold]")
        self.console.print("━" * 70)
        self.console.print("   Made with ❤️  by the community")
        self.console.print("   Open source - contributions welcome!")

        self.console.print()
        self.console.print("━" * 70)
        self.console.print()

        Prompt.ask("Press Enter to return to main menu", default="")

    def run_proxy(self):
        """Prepare and launch proxy in same window"""
        # Check if forced onboarding needed
        if self.needs_onboarding():
            clear_screen()
            self.console.print(
                Panel(
                    Text.from_markup(
                        "⚠️  [bold yellow]Setup Required[/bold yellow]\n\n"
                        "Cannot start without .env.\n"
                        "Launching credential tool..."
                    ),
                    border_style="yellow",
                )
            )

            # Force credential tool
            from rotator_library.credential_tool import (
                ensure_env_defaults,
                run_credential_tool,
            )

            ensure_env_defaults()
            load_dotenv(dotenv_path=_get_env_file(), override=True)
            run_credential_tool()
            load_dotenv(dotenv_path=_get_env_file(), override=True)

            # Check again after credential tool
            if not os.getenv("PROXY_API_KEY"):
                self.console.print(
                    "\n[red]❌ PROXY_API_KEY still not set. Cannot start proxy.[/red]"
                )
                return

        # Clear console and modify sys.argv
        clear_screen()
        self.console.print(
            f"\n[bold green]🚀 Starting proxy on {self.config.config['host']}:{self.config.config['port']}...[/bold green]\n"
        )

        # Brief pause so user sees the message before main.py takes over
        import time

        time.sleep(0.5)

        # Reconstruct sys.argv for main.py
        sys.argv = [
            "main.py",
            "--host",
            self.config.config["host"],
            "--port",
            str(self.config.config["port"]),
        ]
        if self.config.config["enable_request_logging"]:
            sys.argv.append("--enable-request-logging")

        # Exit TUI - main.py will continue execution
        self.running = False


def run_launcher_tui():
    """Entry point for launcher TUI"""
    tui = LauncherTUI()
    tui.run()