import { getCollection } from '../../utils/db.js'

export default defineEventHandler(async (event) => {
  try {
    const id = getRouterParam(event, 'id')
    const body = await readBody(event)
    const collection = await getCollection('transactions')
    
    // Update document
    const updateData = {
      ...body,
      _id: id,
      id: undefined,
      updatedAt: new Date()
    }
    
    const result = await collection.replaceOne(
      { _id: id },
      updateData
    )
    
    if (result.matchedCount === 0) {
      throw createError({
        statusCode: 404,
        statusMessage: 'Transaction not found'
      })
    }
    
    return {
      success: true,
      modifiedCount: result.modifiedCount
    }
  } catch (error) {
    console.error('Error updating transaction:', error)
    throw createError({
      statusCode: 500,
      statusMessage: 'Failed to update transaction'
    })
  }
})