#!/usr/bin/env node

require('dotenv').config({ path: '.env.local' });
const AWS = require('aws-sdk');

// Configure AWS
AWS.config.update({
  region: process.env.AWS_REGION || 'eu-central-1'
});

const dynamodb = new AWS.DynamoDB.DocumentClient();
const TABLE_NAME = process.env.DYNAMODB_TABLE_NAME || 'filamenteka-filaments';

async function clearTable() {
  console.log(`Clearing all items from ${TABLE_NAME}...`);
  
  try {
    // First, scan to get all items
    const scanParams = {
      TableName: TABLE_NAME,
      ProjectionExpression: 'id'
    };
    
    const items = [];
    let lastEvaluatedKey = null;
    
    do {
      if (lastEvaluatedKey) {
        scanParams.ExclusiveStartKey = lastEvaluatedKey;
      }
      
      const result = await dynamodb.scan(scanParams).promise();
      items.push(...result.Items);
      lastEvaluatedKey = result.LastEvaluatedKey;
    } while (lastEvaluatedKey);
    
    console.log(`Found ${items.length} items to delete`);
    
    // Delete in batches of 25
    const chunks = [];
    for (let i = 0; i < items.length; i += 25) {
      chunks.push(items.slice(i, i + 25));
    }
    
    for (const chunk of chunks) {
      const params = {
        RequestItems: {
          [TABLE_NAME]: chunk.map(item => ({
            DeleteRequest: { Key: { id: item.id } }
          }))
        }
      };
      
      await dynamodb.batchWrite(params).promise();
      console.log(`Deleted ${chunk.length} items`);
    }
    
    console.log('Table cleared successfully!');
  } catch (error) {
    console.error('Error clearing table:', error);
    process.exit(1);
  }
}

// Run if called directly
if (require.main === module) {
  clearTable();
}