# Script de Instalación Rápida de OCR
# Para ejecutar: .\install_ocr.ps1

Write-Host "========================================" -ForegroundColor Cyan
Write-Host "Instalación de OCR para MVE Micro Docs" -ForegroundColor Cyan
Write-Host "========================================" -ForegroundColor Cyan
Write-Host ""

# Verificar si tesseract ya está instalado
Write-Host "Verificando si Tesseract está instalado..." -ForegroundColor Yellow
$tesseractInstalled = $false
try {
    $version = tesseract --version 2>&1
    if ($version -match "tesseract") {
        Write-Host "✓ Tesseract ya está instalado:" -ForegroundColor Green
        Write-Host $version[0] -ForegroundColor Gray
        $tesseractInstalled = $true
    }
} catch {
    Write-Host "✗ Tesseract no está instalado" -ForegroundColor Red
}

if (-not $tesseractInstalled) {
    Write-Host ""
    Write-Host "Para instalar Tesseract OCR:" -ForegroundColor Yellow
    Write-Host "1. Visita: https://github.com/UB-Mannheim/tesseract/wiki" -ForegroundColor White
    Write-Host "2. Descarga tesseract-ocr-w64-setup-5.3.x.exe" -ForegroundColor White
    Write-Host "3. Durante la instalación, MARCA la opción 'Spanish language data'" -ForegroundColor White
    Write-Host "4. Agrega C:\Program Files\Tesseract-OCR al PATH del sistema" -ForegroundColor White
    Write-Host "5. Reinicia PowerShell y ejecuta este script nuevamente" -ForegroundColor White
    Write-Host ""
    $openBrowser = Read-Host "¿Abrir el sitio de descarga en el navegador? (S/N)"
    if ($openBrowser -eq "S" -or $openBrowser -eq "s") {
        Start-Process "https://github.com/UB-Mannheim/tesseract/wiki"
    }
    Write-Host ""
    Write-Host "Presiona cualquier tecla para continuar después de instalar Tesseract..."
    $null = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
    exit
}

# Verificar idioma español
Write-Host ""
Write-Host "Verificando idioma español..." -ForegroundColor Yellow
$languages = tesseract --list-langs 2>&1
if ($languages -match "spa") {
    Write-Host "✓ Paquete de idioma español (spa) instalado" -ForegroundColor Green
} else {
    Write-Host "✗ Paquete de idioma español NO instalado" -ForegroundColor Red
    Write-Host "Reinstala Tesseract y marca 'Spanish language data' durante la instalación" -ForegroundColor Yellow
}

# Verificar poppler
Write-Host ""
Write-Host "Verificando poppler (requerido para convertir PDF a imágenes)..." -ForegroundColor Yellow
$popplerInstalled = $false
try {
    $pdfToText = Get-Command pdftoppm -ErrorAction SilentlyContinue
    if ($pdfToText) {
        Write-Host "✓ Poppler ya está instalado" -ForegroundColor Green
        $popplerInstalled = $true
    }
} catch {}

if (-not $popplerInstalled) {
    Write-Host "✗ Poppler no está instalado" -ForegroundColor Red
    Write-Host ""
    Write-Host "Para instalar Poppler:" -ForegroundColor Yellow
    Write-Host "1. Descarga: https://github.com/oschwartz10612/poppler-windows/releases/latest" -ForegroundColor White
    Write-Host "2. Extrae el ZIP a C:\poppler" -ForegroundColor White
    Write-Host "3. Agrega C:\poppler\Library\bin al PATH del sistema" -ForegroundColor White
    Write-Host ""
    $openBrowser = Read-Host "¿Abrir el sitio de descarga en el navegador? (S/N)"
    if ($openBrowser -eq "S" -or $openBrowser -eq "s") {
        Start-Process "https://github.com/oschwartz10612/poppler-windows/releases/latest"
    }
}

# Instalar dependencias Python
Write-Host ""
Write-Host "Instalando dependencias Python..." -ForegroundColor Yellow
try {
    & pip install pytesseract Pillow pdf2image
    Write-Host "✓ Dependencias Python instaladas correctamente" -ForegroundColor Green
} catch {
    Write-Host "✗ Error al instalar dependencias Python" -ForegroundColor Red
    Write-Host $_.Exception.Message -ForegroundColor Red
}

# Verificar archivo .env
Write-Host ""
Write-Host "Verificando configuración..." -ForegroundColor Yellow
if (Test-Path ".env") {
    Write-Host "✓ Archivo .env existe" -ForegroundColor Green
    
    # Verificar si tiene las variables OCR
    $envContent = Get-Content ".env" -Raw
    if ($envContent -notmatch "OCR_ENABLED") {
        Write-Host "! Agregando variables OCR al archivo .env" -ForegroundColor Yellow
        $ocrConfig = @"


# OCR Settings
OCR_ENABLED=true
OCR_LANGUAGE=spa
OCR_DPI=300
OCR_TIMEOUT=300
"@
        Add-Content ".env" $ocrConfig
        Write-Host "✓ Variables OCR agregadas" -ForegroundColor Green
    } else {
        Write-Host "✓ Variables OCR ya configuradas" -ForegroundColor Green
    }
} else {
    Write-Host "! Archivo .env no existe, copiando desde .env.example" -ForegroundColor Yellow
    Copy-Item ".env.example" ".env"
    Write-Host "✓ Archivo .env creado - edítalo con tus credenciales" -ForegroundColor Green
}

# Resumen final
Write-Host ""
Write-Host "========================================" -ForegroundColor Cyan
Write-Host "Resumen de Instalación" -ForegroundColor Cyan
Write-Host "========================================" -ForegroundColor Cyan

$allGood = $tesseractInstalled -and ($languages -match "spa")

if ($allGood) {
    Write-Host "✓ ¡Todo listo para usar OCR!" -ForegroundColor Green
    Write-Host ""
    Write-Host "Para probar:" -ForegroundColor White
    Write-Host "  python -c `"import pytesseract; print('OCR Ready!')`"" -ForegroundColor Gray
    Write-Host ""
    Write-Host "Inicia tu servidor:" -ForegroundColor White
    Write-Host "  uvicorn app.main:app --reload" -ForegroundColor Gray
} else {
    Write-Host "⚠ Instalación incompleta" -ForegroundColor Yellow
    Write-Host ""
    Write-Host "Componentes faltantes:" -ForegroundColor Yellow
    if (-not $tesseractInstalled) { Write-Host "  - Tesseract OCR" -ForegroundColor Red }
    if ($languages -notmatch "spa") { Write-Host "  - Paquete de idioma español" -ForegroundColor Red }
    if (-not $popplerInstalled) { Write-Host "  - Poppler (opcional pero recomendado)" -ForegroundColor Yellow }
    Write-Host ""
    Write-Host "Consulta OCR_SETUP.md para instrucciones detalladas" -ForegroundColor White
}

Write-Host ""
Write-Host "Presiona cualquier tecla para salir..."
$null = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")