package fr.tiogars.chat.domains.mcp.services;
   
   import fr.tiogars.chat.domains.mcp.models.McpActionRequest;
   import fr.tiogars.chat.domains.mcp.models.McpActionResponse;
   import fr.tiogars.chat.domains.mcp.models.McpResource;
   import fr.tiogars.chat.domains.mcp.models.McpServiceConfig;
   import org.springframework.stereotype.Service;
   
   import java.time.Duration;
  import java.time.Instant;
  import java.util.List;
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  /**
   * Service for managing MCP services and executing actions.
   */
  @Service
  public class McpService {
  
      private final Map<String, McpServiceConfig> serviceConfigs = new ConcurrentHashMap<>();
  
      public McpService() {
          // Initialize with some default MCP services
          registerDefaultServices();
      }
  
      private void registerDefaultServices() {
          // Filesystem MCP server
          McpServiceConfig filesystemConfig = new McpServiceConfig(
                  "filesystem",
                  "File System Access",
                  "Access to local file system operations",
                  "npx @modelcontextprotocol/server-filesystem",
                  Map.of(),
                  true,
                  30
          );
          serviceConfigs.put(filesystemConfig.id(), filesystemConfig);
  
          // Process MCP server
          McpServiceConfig processConfig = new McpServiceConfig(
                  "process",
                  "Process Management",
                  "Execute system processes and commands",
                  "npx @modelcontextprotocol/server-process",
                  Map.of(),
                  true,
                  30
          );
          serviceConfigs.put(processConfig.id(), processConfig);
  
          // HTTP MCP server
          McpServiceConfig httpConfig = new McpServiceConfig(
                  "http",
                  "HTTP Requests",
                  "Make HTTP requests to external services",
                  "npx @modelcontextprotocol/server-http",
                  Map.of(),
                  true,
                  60
          );
          serviceConfigs.put(httpConfig.id(), httpConfig);
      }
  
      /**
       * Get all registered MCP service configurations.
       *
       * @return list of all MCP service configs
       */
      public List<McpServiceConfig> getAllServices() {
          return serviceConfigs.values().stream().toList();
      }
  
      /**
       * Get a specific MCP service configuration by ID.
       *
       * @param serviceId the service ID
       * @return the service configuration or null if not found
       */
      public McpServiceConfig getService(String serviceId) {
          return serviceConfigs.get(serviceId);
      }
  
      /**
       * Register a new MCP service.
       *
       * @param config the service configuration
       * @return the registered configuration
       */
      public McpServiceConfig registerService(McpServiceConfig config) {
          serviceConfigs.put(config.id(), config);
          return config;
      }
  
      /**
       * Execute an action on an MCP service.
       * This is a simplified implementation that simulates MCP calls.
       * In a real implementation, this would connect to the actual MCP server.
      *
      * @param request the action request
      * @return the action response
      */
     public McpActionResponse executeAction(McpActionRequest request) {
         Instant start = Instant.now();
         McpServiceConfig config = serviceConfigs.get(request.serviceId());
 
         if (config == null || !config.enabled()) {
             Instant end = Instant.now();
             return new McpActionResponse(
                     false,
                     Map.of(),
                     List.of(),
                     "Service not found or disabled: " + request.serviceId(),
                     Duration.between(start, end).toMillis()
             );
         }
 
         // Simulate action execution based on service type
         McpActionResponse response = switch (request.serviceId()) {
             case "filesystem" -> executeFilesystemAction(request);
             case "process" -> executeProcessAction(request);
             case "http" -> executeHttpAction(request);
             default -> executeGenericAction(request, config);
         };
 
         Instant end = Instant.now();
         return new McpActionResponse(
                 response.success(),
                 response.data(),
                 response.resources(),
                 response.error(),
                 Duration.between(start, end).toMillis()
         );
     }
 
     private McpActionResponse executeFilesystemAction(McpActionRequest request) {
         String action = request.action();
         Map<String, Object> params = request.parameters() != null ? request.parameters() : Map.of();
 
         if ("list_resources".equals(action)) {
             String path = (String) params.getOrDefault("path", ".");
             // Simulate listing files
             McpResource resource1 = new McpResource(
                     "file://" + path + "/file1.txt",
                     "file1.txt",
                     "file",
                     "text/plain",
                     1024L
             );
             McpResource resource2 = new McpResource(
                     "file://" + path + "/file2.txt",
                     "file2.txt",
                     "file",
                     "text/plain",
                     2048L
             );
             return new McpActionResponse(true, Map.of("path", path), List.of(resource1, resource2), null, 0);
         } else if ("read_resource".equals(action)) {
             String uri = (String) params.get("uri");
             if (uri != null) {
                 return new McpActionResponse(
                         true,
                         Map.of("uri", uri, "content", "Sample content from " + uri),
                         List.of(),
                         null,
                         0
                 );
             }
         }
 
         return new McpActionResponse(false, Map.of(), List.of(), "Unknown action: " + action, 0);
     }
 
     private McpActionResponse executeProcessAction(McpActionRequest request) {
         String action = request.action();
         if ("list_processes".equals(action)) {
             return new McpActionResponse(
                     true,
                     Map.of("count", 3),
                     List.of(),
                     null,
                     0
             );
         }
         return new McpActionResponse(false, Map.of(), List.of(), "Unknown action: " + action, 0);
     }
 
     private McpActionResponse executeHttpAction(McpActionRequest request) {
         String action = request.action();
         if ("get".equals(action)) {
             String url = (String) request.parameters().get("url");
             return new McpActionResponse(
                     true,
                     Map.of("url", url, "status", 200, "body", "Sample response"),
                     List.of(),
                     null,
                     0
             );
         }
         return new McpActionResponse(false, Map.of(), List.of(), "Unknown action: " + action, 0);
     }
 
     private McpActionResponse executeGenericAction(McpActionRequest request, McpServiceConfig config) {
         return new McpActionResponse(
                 true,
                 Map.of("service", config.name(), "action", request.action()),
                 List.of(),
                 null,
                 0
         );
     }
 }