#!/usr/bin/env python3
"""Example demonstrating how to use plugins with Claude Code SDK.

Plugins allow you to extend Claude Code with custom commands, agents, skills,
and hooks. This example shows how to load a local plugin and verify it's
loaded by checking the system message.

The demo plugin is located in examples/plugins/demo-plugin/ and provides
a custom /greet command.
"""

from pathlib import Path

import anyio

from claude_agent_sdk import (
    ClaudeAgentOptions,
    SystemMessage,
    query,
)


async def plugin_example():
    """Example showing plugins being loaded in the system message."""
    print("=== Plugin Example ===\n")

    # Get the path to the demo plugin
    # In production, you can use any path to your plugin directory
    plugin_path = Path(__file__).parent / "plugins" / "demo-plugin"

    options = ClaudeAgentOptions(
        plugins=[
            {
                "type": "local",
                "path": str(plugin_path),
            }
        ],
        max_turns=1,  # Limit to one turn for quick demo
    )

    print(f"Loading plugin from: {plugin_path}\n")

    found_plugins = False
    async for message in query(prompt="Hello!", options=options):
        if isinstance(message, SystemMessage) and message.subtype == "init":
            print("System initialized!")
            print(f"System message data keys: {list(message.data.keys())}\n")

            # Check for plugins in the system message
            plugins_data = message.data.get("plugins", [])
            if plugins_data:
                print("Plugins loaded:")
                for plugin in plugins_data:
                    print(f"  - {plugin.get('name')} (path: {plugin.get('path')})")
                found_plugins = True
            else:
                print("Note: Plugin was passed via CLI but may not appear in system message.")
                print(f"Plugin path configured: {plugin_path}")
                found_plugins = True

    if found_plugins:
        print("\nPlugin successfully configured!\n")


async def main():
    """Run all plugin examples."""
    await plugin_example()


if __name__ == "__main__":
    anyio.run(main)