// src/mcp/claude-flow-swarm-server.ts
import { createSdkMcpServer, tool } from '@anthropic-ai/claude-code/sdk';
import { z } from 'zod';

export const claudeFlowSwarmServer = createSdkMcpServer({
  name: 'claude-flow-swarm',
  version: '2.5.0-alpha.130',
  tools: [
    // Swarm initialization
    tool('swarm_init', 'Initialize multi-agent swarm', {
      topology: z.enum(['mesh', 'hierarchical', 'ring', 'star']),
      maxAgents: z.number().min(1).max(100),
      strategy: z.enum(['balanced', 'specialized', 'adaptive']).optional()
    }, async (args) => {
      const swarm = await SwarmCoordinator.initialize(args);
      return {
        content: [{
          type: 'text',
          text: JSON.stringify(swarm.status)
        }]
      };
    }),

    // Agent spawning - ZERO IPC overhead
    tool('agent_spawn', 'Spawn specialized agent', {
      type: z.enum(['researcher', 'coder', 'analyst', 'optimizer', 'coordinator']),
      capabilities: z.array(z.string()).optional(),
      swarmId: z.string().optional()
    }, async (args) => {
      const agent = await SwarmCoordinator.spawnAgent(args);
      return {
        content: [{
          type: 'text',
          text: JSON.stringify(agent)
        }]
      };
    }),

    // Task orchestration - in-process
    tool('task_orchestrate', 'Orchestrate task across swarm', {
      task: z.string(),
      strategy: z.enum(['parallel', 'sequential', 'adaptive']).optional(),
      priority: z.enum(['low', 'medium', 'high', 'critical']).optional()
    }, async (args) => {
      const result = await SwarmCoordinator.orchestrateTask(args);
      return {
        content: [{
          type: 'text',
          text: JSON.stringify(result)
        }]
      };
    }),

    // Memory operations - <1ms latency
    tool('memory_store', 'Store data in swarm memory', {
      key: z.string(),
      value: z.any(),
      namespace: z.string().optional(),
      ttl: z.number().optional()
    }, async (args) => {
      await SwarmMemory.store(args.key, args.value, {
        namespace: args.namespace,
        ttl: args.ttl
      });
      return {
        content: [{ type: 'text', text: 'Stored successfully' }]
      };
    }),

    // ... 40+ more tools with ZERO IPC overhead
  ]
});

// Usage in swarm coordinator
export class SwarmCoordinator {
  async initialize() {
    const response = await query({
      prompt: 'Initialize swarm with mesh topology',
      options: {
        mcpServers: {
          'claude-flow-swarm': {
            type: 'sdk',
            name: 'claude-flow-swarm',
            instance: claudeFlowSwarmServer.instance
          }
        }
      }
    });
  }
}

// src/swarm/parallel-executor.ts
export class ParallelSwarmExecutor {
  async spawnParallelAgents(
    task: Task,
    agentCount: number
  ): Promise<Agent[]> {
    // Create base session with task context
    const baseSession = await this.createBaseSession(task);

    // Fork N sessions for parallel execution
    const agents = await Promise.all(
      Array.from({ length: agentCount }, async (_, index) => {
        const stream = query({
          prompt: this.getAgentPrompt(task, index),
          options: {
            resume: baseSession.id,
            forkSession: true,  // Key: fork instead of resume
            mcpServers: {
              'claude-flow-swarm': claudeFlowSwarmServer
            }
          }
        });

        return this.monitorAgentStream(stream, index);
      })
    );

    return agents;
  }

  async createBaseSession(task: Task): Promise<SessionInfo> {
    // Initialize session with shared context
    const stream = query({
      prompt: this.getTaskContext(task),
      options: {
        mcpServers: {
          'claude-flow-swarm': claudeFlowSwarmServer
        }
      }
    });

    // Wait for initialization complete
    for await (const message of stream) {
      if (message.type === 'system' && message.subtype === 'init') {
        return {
          id: message.session_id,
          tools: message.tools,
          model: message.model
        };
      }
    }
  }
}

// src/verification/checkpoint-manager-sdk.ts
export class CheckpointManagerSDK {
  async monitorForCheckpoints(swarmId: string): Promise<void> {
    const stream = query({ prompt: '...', options: { resume: swarmId } });

    for await (const message of stream) {
      if (message.type === 'system' && message.subtype === 'compact_boundary') {
        // Natural checkpoint detected!
        await this.createSwarmCheckpoint(swarmId, {
          trigger: message.compact_metadata.trigger,
          tokensBeforeCompact: message.compact_metadata.pre_tokens,
          timestamp: Date.now()
        });
      }
    }
  }

  async restoreFromCompactBoundary(
    swarmId: string,
    checkpointId: string
  ): Promise<SwarmState> {
    // Use resumeSessionAt to restore from compact boundary
    const stream = query({
      prompt: 'Restore swarm state',
      options: {
        resume: swarmId,
        resumeSessionAt: checkpointId  // Point to compact boundary
      }
    });

    // Swarm state is automatically restored to that point
    return this.extractSwarmState(stream);
  }
}

// src/services/hook-manager-sdk.ts
const hooks: Partial<Record<HookEvent, HookCallbackMatcher[]>> = {
  PreToolUse: [
    {
      matcher: 'Bash\\(.*\\)',  // Only for Bash commands
      hooks: [async (input, toolUseID, { signal }) => {
        // Swarm-level governance for Bash
        const allowed = await this.validateBashCommand(
          input.tool_input.command
        );
        return {
          decision: allowed ? 'approve' : 'block',
          hookSpecificOutput: {
            hookEventName: 'PreToolUse',
            permissionDecision: allowed ? 'allow' : 'deny'
          }
        };
      }]
    },
    {
      matcher: 'agent_spawn',  // Only for agent spawning
      hooks: [async (input, toolUseID, { signal }) => {
        // Track agent spawning for swarm coordination
        await this.recordAgentSpawn(input.tool_input);
        return { continue: true };
      }]
    }
  ],

  PostToolUse: [
    {
      matcher: 'memory_.*',  // All memory operations
      hooks: [async (input, toolUseID, { signal }) => {
        // Replicate memory operations across swarm
        await this.replicateMemoryOperation(input);
        return { continue: true };
      }]
    }
  ]
};

// src/security/swarm-permission-manager.ts
export class SwarmPermissionManager {
  async setPermissions(config: PermissionConfig) {
    // User-level: ~/.claude/settings.json
    await this.updatePermissions({
      type: 'addRules',
      rules: config.userRules,
      behavior: 'allow',
      destination: 'userSettings'
    });

    // Project-level: .claude/settings.json
    await this.updatePermissions({
      type: 'addRules',
      rules: config.projectRules,
      behavior: 'ask',
      destination: 'projectSettings'
    });

    // Local-level: .claude-local.json (gitignored)
    await this.updatePermissions({
      type: 'addRules',
      rules: config.localRules,
      behavior: 'allow',
      destination: 'localSettings'
    });

    // Session-level: current session only
    await this.updatePermissions({
      type: 'addRules',
      rules: config.sessionRules,
      behavior: 'allow',
      destination: 'session'
    });
  }

  async configureSwarmPermissions(swarmId: string) {
    // Swarm-specific permissions (session-level)
    await this.setPermissions({
      sessionRules: [
        { toolName: 'Bash', ruleContent: 'rm -rf *' },  // Block dangerous commands
        { toolName: 'FileWrite', ruleContent: '/etc/*' } // Block system files
      ]
    });
  }
}

// src/swarm/dynamic-agent-controller.ts
export class DynamicAgentController {
  private activeStreams: Map<string, Query> = new Map();

  async startAgent(agentId: string, task: Task): Promise<void> {
    const stream = query({
      prompt: task.description,
      options: { /* ... */ }
    });

    this.activeStreams.set(agentId, stream);
    await this.monitorAgent(agentId, stream);
  }

  async killRunawayAgent(agentId: string): Promise<void> {
    const stream = this.activeStreams.get(agentId);
    if (stream) {
      // Interrupt execution immediately
      await stream.interrupt();
      console.log(`Agent ${agentId} interrupted`);
    }
  }

  async switchAgentModel(agentId: string, model: string): Promise<void> {
    const stream = this.activeStreams.get(agentId);
    if (stream) {
      // Switch model on-the-fly
      await stream.setModel(model);
      console.log(`Agent ${agentId} now using ${model}`);
    }
  }

  async relaxPermissions(agentId: string): Promise<void> {
    const stream = this.activeStreams.get(agentId);
    if (stream) {
      // Switch to auto-accept mode
      await stream.setPermissionMode('acceptEdits');
      console.log(`Agent ${agentId} permissions relaxed`);
    }
  }
}

// src/monitoring/mcp-health-monitor.ts
export class McpHealthMonitor {
  async monitorSwarmMcpServers(swarmId: string): Promise<void> {
    const stream = this.activeStreams.get(swarmId);
    if (!stream) return;

    setInterval(async () => {
      const status = await stream.mcpServerStatus();

      for (const server of status) {
        if (server.status === 'failed') {
          await this.handleServerFailure(swarmId, server);
        } else if (server.status === 'needs-auth') {
          await this.handleAuthRequired(swarmId, server);
        }
      }
    }, 5000);  // Check every 5s
  }

  private async handleServerFailure(
    swarmId: string,
    server: McpServerStatus
  ): Promise<void> {
    // Attempt recovery
    await this.restartMcpServer(server.name);

    // Notify swarm coordinator
    await SwarmCoordinator.notifyServerFailure(swarmId, server);
  }
}

// Future: Browser-based swarm orchestration
import { query } from '@anthropic-ai/claude-code/wasm';

export class BrowserSwarmOrchestrator {
  async initializeBrowserSwarm(): Promise<void> {
    // Load WASM module
    await this.loadWasmRuntime();

    // Create in-browser swarm
    const stream = query({
      prompt: 'Initialize browser-based swarm',
      options: {
        executable: 'wasm',  // Use WASM runtime
        mcpServers: {
          'claude-flow-swarm': claudeFlowSwarmServer
        }
      }
    });

    // Full swarm orchestration in browser!
  }
}