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import io.github.mcp.client.McpClient;
import io.github.mcp.client.transport.HttpTransport;
import io.github.mcp.client.transport.TransportConfig;
import io.github.mcp.types.CallToolRequest;
import io.github.mcp.types.Tool;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;

public class McpExample {
    public static void main(String[] args) throws Exception {
        // Configure HTTP transport for Agentsfera
        Map<String, String> headers = new HashMap<>();
        headers.put("Authorization", "Bearer sk-7aefcd76-44c0-4687-a0a9-43599d050fdd");
        headers.put("Content-Type", "application/json");
        // Optional: Unique identifier for your user across MCP sessions
        // Use the same ID to maintain session continuity across reconnects
        headers.put("user-session-id", "your-user-unique-id");
        
        TransportConfig config = TransportConfig.builder()
            .baseUrl("https://api.agentsfera.ai")
            .headers(headers)
            .build();
        
        HttpTransport transport = new HttpTransport(config);
        
        // Create and initialize the MCP client
        try (McpClient client = new McpClient(transport)) {
            // Initialize connection
            client.initialize().get();
            
            // List available tools from all enabled integrations
            CompletableFuture<List<Tool>> toolsFuture = client.listTools();
            List<Tool> tools = toolsFuture.get();
            
            System.out.println("Available tools: " + 
                tools.stream()
                    .map(Tool::getName)
                    .reduce((a, b) -> a + ", " + b)
                    .orElse("none"));
            
            // Example: Call a tool (adjust based on your enabled integrations)
            Map<String, Object> arguments = new HashMap<>();
            arguments.put("query", "project update");
            arguments.put("max_results", 10);
            
            CallToolRequest request = CallToolRequest.builder()
                .name("gmail-search-emails")  // Gmail integration example
                .arguments(arguments)
                .build();
            
            CompletableFuture<Object> resultFuture = client.callTool(request);
            Object result = resultFuture.get();
            
            System.out.println("Tool result: " + result);
            
            // Tool result will contain a redirect URL to Google OAuth2 login page.
            // You can customize the redirect URL to your application/agent.
            // After that your application/agent will repeat the tool call.
        }
    }
}