// src/cli/commands/registry.ts
// Registry of available CLI commands

type CommandHandler = (args: string[]) => Promise<string> | string;

interface Command {
  desc: string;
  handler: CommandHandler;
  hidden?: boolean; // Hidden commands don't show in autocomplete but still work
}

export const commands: Record<string, Command> = {
  "/model": {
    desc: "Switch model",
    handler: () => {
      return "Opening model selector...";
    },
  },
  "/stream": {
    desc: "Toggle token streaming on/off",
    hidden: true,
    handler: () => {
      // Handled specially in App.tsx for live toggling
      return "Toggling token streaming...";
    },
  },
  "/exit": {
    desc: "Exit this session",
    handler: () => {
      // Handled specially in App.tsx
      return "Exiting...";
    },
  },
  "/clear": {
    desc: "Clear conversation history",
    handler: () => {
      // Handled specially in App.tsx to access client and agent ID
      return "Clearing messages...";
    },
  },
  "/compact": {
    desc: "Summarize conversation history (compaction)",
    hidden: true,
    handler: () => {
      // Handled specially in App.tsx to access client and agent ID
      return "Compacting conversation...";
    },
  },
  "/logout": {
    desc: "Clear credentials and exit",
    handler: () => {
      // Handled specially in App.tsx to access settings manager
      return "Clearing credentials...";
    },
  },
  "/rename": {
    desc: "Rename the current agent (/rename <name>)",
    handler: () => {
      // Handled specially in App.tsx to access agent ID and client
      return "Renaming agent...";
    },
  },
  "/description": {
    desc: "Update the current agent's description (/description <text>)",
    handler: () => {
      // Handled specially in App.tsx to access agent ID and client
      return "Updating description...";
    },
  },
  "/link": {
    desc: "Attach all Letta Code tools to agent (deprecated, use /toolset instead)",
    hidden: true,
    handler: () => {
      // Handled specially in App.tsx to access agent ID and client
      return "Linking tools...";
    },
  },
  "/unlink": {
    desc: "Remove all Letta Code tools from agent (deprecated, use /toolset instead)",
    hidden: true,
    handler: () => {
      // Handled specially in App.tsx to access agent ID and client
      return "Unlinking tools...";
    },
  },
  "/toolset": {
    desc: "Switch toolset (replaces /link and /unlink)",
    handler: () => {
      // Handled specially in App.tsx to access agent ID and client
      return "Opening toolset selector...";
    },
  },
  "/system": {
    desc: "Switch system prompt",
    handler: () => {
      // Handled specially in App.tsx to open system prompt selector
      return "Opening system prompt selector...";
    },
  },
  "/download": {
    desc: "Download AgentFile (.af)",
    handler: () => {
      // Handled specially in App.tsx to access agent ID and client
      return "Downloading agent file...";
    },
  },
  "/bg": {
    desc: "Show background shell processes",
    handler: () => {
      // Handled specially in App.tsx to show background processes
      return "Showing background processes...";
    },
  },
  "/init": {
    desc: "Initialize agent memory for this project",
    handler: () => {
      // Handled specially in App.tsx to send initialization prompt
      return "Initializing memory...";
    },
  },
  "/skill": {
    desc: "Enter skill creation mode (/skill [description])",
    handler: () => {
      // Handled specially in App.tsx to trigger skill-creation workflow
      return "Starting skill creation...";
    },
  },
  "/remember": {
    desc: "Remember something from the conversation (/remember [instructions])",
    handler: () => {
      // Handled specially in App.tsx to trigger memory update
      return "Processing memory request...";
    },
  },
  "/resume": {
    desc: "Browse and switch to another agent",
    handler: () => {
      // Handled specially in App.tsx to show agent selector
      return "Opening agent selector...";
    },
  },
  "/search": {
    desc: "Search messages across all agents",
    handler: () => {
      // Handled specially in App.tsx to show message search
      return "Opening message search...";
    },
  },
  "/pin": {
    desc: "Pin current agent globally, or use -l for local only",
    handler: () => {
      // Handled specially in App.tsx
      return "Pinning agent...";
    },
  },
  "/unpin": {
    desc: "Unpin current agent globally, or use -l for local only",
    handler: () => {
      // Handled specially in App.tsx
      return "Unpinning agent...";
    },
  },
  "/pinned": {
    desc: "Show pinned agents",
    handler: () => {
      // Handled specially in App.tsx to open pinned agents selector
      return "Opening pinned agents...";
    },
  },
  "/subagents": {
    desc: "Manage custom subagents",
    handler: () => {
      // Handled specially in App.tsx to open SubagentManager component
      return "Opening subagent manager...";
    },
  },
  "/feedback": {
    desc: "Send feedback to the Letta team",
    handler: () => {
      // Handled specially in App.tsx to send feedback request
      return "Sending feedback...";
    },
  },
  "/memory": {
    desc: "View agent memory blocks",
    handler: () => {
      // Handled specially in App.tsx to open memory viewer
      return "Opening memory viewer...";
    },
  },
  "/usage": {
    desc: "Show session usage statistics and balance",
    handler: () => {
      // Handled specially in App.tsx to display usage stats
      return "Fetching usage statistics...";
    },
  },
  "/help": {
    desc: "Show available commands",
    handler: () => {
      // Handled specially in App.tsx to open help dialog
      return "Opening help...";
    },
  },
};

/**
 * Execute a command and return the result
 */
export async function executeCommand(
  input: string,
): Promise<{ success: boolean; output: string }> {
  const [command, ...args] = input.trim().split(/\s+/);

  if (!command) {
    return {
      success: false,
      output: "No command found",
    };
  }

  const handler = commands[command];
  if (!handler) {
    return {
      success: false,
      output: `Unknown command: ${command}`,
    };
  }

  try {
    const output = await handler.handler(args);
    return { success: true, output };
  } catch (error) {
    return {
      success: false,
      output: `Error executing ${command}: ${error instanceof Error ? error.message : String(error)}`,
    };
  }
}