import type { Plan } from "../types/plan";

/**
 * Prepare DLT execution (2PC prepare phase)
 * Reserves collateral and locks amounts
 */
export async function prepareDLTExecution(plan: Plan): Promise<boolean> {
  // Mock: In real implementation, this would call the handler contract's prepare() function
  // For now, simulate preparation
  console.log(`[DLT] Preparing execution for plan ${plan.plan_id}`);
  
  // Simulate async preparation
  await new Promise((resolve) => setTimeout(resolve, 100));
  
  return true;
}

/**
 * Commit DLT execution (2PC commit phase)
 * Executes all DLT steps atomically
 */
export async function commitDLTExecution(plan: Plan): Promise<{
  success: boolean;
  txHash?: string;
  error?: string;
}> {
  console.log(`[DLT] Committing execution for plan ${plan.plan_id}`);
  
  try {
    // Mock: In real implementation, this would:
    // 1. Call handler contract's executeCombo() function
    // 2. Wait for transaction confirmation
    // 3. Return transaction hash
    
    const txHash = `0x${Math.random().toString(16).substr(2, 64)}`;
    
    // Simulate execution delay
    await new Promise((resolve) => setTimeout(resolve, 500));
    
    return {
      success: true,
      txHash,
    };
  } catch (error: any) {
    return {
      success: false,
      error: error.message,
    };
  }
}

/**
 * Abort DLT execution (2PC abort phase)
 * Releases reserved collateral and unlocks amounts
 */
export async function abortDLTExecution(planId: string): Promise<void> {
  console.log(`[DLT] Aborting execution for plan ${planId}`);
  
  // Mock: In real implementation, this would call handler contract's abort() function
  // to release any reserved resources
  await new Promise((resolve) => setTimeout(resolve, 100));
}

/**
 * Get DLT execution status
 */
export async function getDLTStatus(planId: string): Promise<{
  status: string;
  txHash?: string;
  blockNumber?: number;
}> {
  // Mock implementation
  return {
    status: "pending",
  };
}