/**
 * VibeWork Proof-of-Execution Sandbox
 * 
 * In a real production environment, this would integrate with E2B, Firecracker microVMs, 
 * or Docker-in-Docker to securely execute untrusted Agent-submitted code.
 * 
 * This module simulates the Sandbox Provisioning and Execution process, 
 * generating deterministic Proof-of-Execution logs based on the PR content.
 */

export interface SandboxExecutionResult {
  vm_id: string;
  status: "SUCCESS" | "FAILED" | "TIMEOUT";
  execution_time_ms: number;
  stdout: string;
  stderr: string;
  test_pass_rate: number;
}

export interface SandboxExecutionRequest {
  task_id: string;
  agent_id: string;
  pull_request_url?: string;
  code_snippet?: string;
  test_command?: string;
}

export async function runInSandbox(request: SandboxExecutionRequest): Promise<SandboxExecutionResult> {
  console.log(`[Sandbox] Provisioning secure microVM for Agent ${request.agent_id} on Task ${request.task_id}...`);
  
  // Simulate VM boot time
  await new Promise(resolve => setTimeout(resolve, 1500));

  const vmId = `vm-` + Math.random().toString(36).substring(2, 10);
  console.log(`[Sandbox] microVM ${vmId} provisioned. Executing tests...`);

  // Simulate test execution time
  const executionTime = Math.floor(Math.random() * 3000) + 500;
  await new Promise(resolve => setTimeout(resolve, executionTime));

  // Deterministic-like evaluation based on string length (just for simulation variance)
  const codeContent = request.code_snippet || request.pull_request_url || "";
  
  // If the agent submitted something that looks like an error or incomplete, fail it
  const isFailure = codeContent.includes("TODO") || codeContent.includes("FIXME") || Math.random() < 0.2;

  if (isFailure) {
    console.log(`[Sandbox] microVM ${vmId} execution FAILED.`);
    return {
      vm_id: vmId,
      status: "FAILED",
      execution_time_ms: executionTime,
      stdout: "Running test suite...\nTest 1: Passed\nTest 2: FAILED\nExpected output to be 'true' but got 'undefined'.",
      stderr: "Error: Unhandled exception in runner.js:42",
      test_pass_rate: 0.5,
    };
  }

  console.log(`[Sandbox] microVM ${vmId} execution SUCCESS.`);
  return {
    vm_id: vmId,
    status: "SUCCESS",
    execution_time_ms: executionTime,
    stdout: "Running test suite...\nTest 1: Passed\nTest 2: Passed\nTest 3: Passed\nAll 3 tests passed successfully.",
    stderr: "",
    test_pass_rate: 1.0,
  };
}

export async function runSubmissionInSandbox(submissionId: string, _deliverables: unknown, _testFileContent?: unknown) {
  void _deliverables;
  void _testFileContent;
  // Mock function for backwards compatibility
  console.log(`[Sandbox] Running submission ${submissionId}`);
  return {
    success: true,
    logs: "Test passed.",
    pass_rate: 1.0,
    overall_result: "PASS",
    tests: [],
    artifacts: {},
    error_classification: "NONE",
    resource_usage: {
      cpu_ms: 150,
      memory_bytes: 1024 * 1024 * 10, // 10MB
      wall_time_ms: 200
    }
  };
}
