# Build Prisma Lambda Layer
# Run this script before deploying to ensure the layer has the generated client

$layerPath = "layers\prisma\nodejs"

Write-Host "Building Prisma Lambda Layer..." -ForegroundColor Cyan

# 1. Clean existing node_modules in layer
Write-Host "Cleaning layer node_modules..."
if (Test-Path "$layerPath\node_modules") {
    Remove-Item -Recurse -Force "$layerPath\node_modules"
}

# 2. Install dependencies in layer
Write-Host "Installing layer dependencies..."
Push-Location $layerPath
npm install --omit=dev
Pop-Location

# 3. Generate Prisma client into the layer
Write-Host "Generating Prisma client into layer..."
# Set the output directory for Prisma client
$env:PRISMA_GENERATE_DATAPROXY = "false"

# Generate client - this creates .prisma/client
npx prisma generate

# 4. Copy .prisma/client to layer
Write-Host "Copying generated Prisma client to layer..."
$sourcePrisma = "node_modules\.prisma"
$destPrisma = "$layerPath\node_modules\.prisma"

if (Test-Path $sourcePrisma) {
    if (Test-Path $destPrisma) {
        Remove-Item -Recurse -Force $destPrisma
    }
    Copy-Item -Recurse $sourcePrisma $destPrisma
    Write-Host "Copied .prisma/client successfully!" -ForegroundColor Green
} else {
    Write-Host "ERROR: .prisma folder not found. Run 'npx prisma generate' first." -ForegroundColor Red
    exit 1
}

# 5. Show layer size
Write-Host "`nLayer contents:"
Get-ChildItem "$layerPath\node_modules" -Directory | Select-Object Name
$layerSize = (Get-ChildItem "$layerPath\node_modules" -Recurse | Measure-Object -Property Length -Sum).Sum / 1MB
Write-Host "`nTotal layer size: $([math]::Round($layerSize, 2)) MB" -ForegroundColor Yellow

Write-Host "`nPrisma layer built successfully!" -ForegroundColor Green
Write-Host "Run 'serverless deploy' to deploy with the updated layer."