export default defineEventHandler(async (event) => {
  const query = getQuery(event)
  const { source = 'EUR', target = 'CAD' } = query
  
  // Get API token from environment variables (use Jennie's token by default)
  const apiToken = process.env.WISE_API_KEY_JENNIE
  
  if (!apiToken) {
    throw createError({
      statusCode: 400,
      statusMessage: 'Wise API token not configured'
    })
  }

  try {
    // First get the profile ID
    const profileResponse = await fetch('https://api.wise.com/v1/profiles', {
      headers: {
        'Authorization': `Bearer ${apiToken}`,
        'Content-Type': 'application/json'
      }
    })

    if (!profileResponse.ok) {
      throw new Error(`Profile fetch failed: ${profileResponse.statusText}`)
    }

    const profiles = await profileResponse.json()
    const personalProfile = profiles.find(p => p.type === 'personal')
    
    if (!personalProfile) {
      throw new Error('Personal profile not found')
    }

    // Get exchange rates
    const ratesResponse = await fetch(`https://api.wise.com/v1/rates?source=${source}&target=${target}`, {
      headers: {
        'Authorization': `Bearer ${apiToken}`,
        'Content-Type': 'application/json'
      }
    })

    if (!ratesResponse.ok) {
      throw new Error(`Exchange rates fetch failed: ${ratesResponse.statusText}`)
    }

    const rates = await ratesResponse.json()
    
    // Return the rate and timestamp
    return {
      source,
      target,
      rate: rates[0]?.rate || null,
      timestamp: new Date().toISOString(),
      rateType: rates[0]?.type || 'unknown'
    }
    
  } catch (error) {
    console.error(`Wise exchange rate API error:`, error)
    
    // Fallback to hardcoded rate if API fails
    const fallbackRates = {
      'EUR-CAD': 1.45,
      'USD-CAD': 1.35,
      'GBP-CAD': 1.65
    }
    
    const fallbackKey = `${source}-${target}`
    const fallbackRate = fallbackRates[fallbackKey] || 1.0
    
    return {
      source,
      target,
      rate: fallbackRate,
      timestamp: new Date().toISOString(),
      rateType: 'fallback',
      error: 'Using fallback rate due to API error'
    }
  }
})