#!/usr/bin/env ruby
# frozen_string_literal: true

# ==========================================================
# adn/tools/cli/drones/dasuten_download_drive-dasu-sql4.rb
# ==========================================================
# Dron: Download desde Google Drive a dasu-sql4
# Flujo: Google Drive → F:\BACKUP\sysdasuten_compressed_ADN.bak
# Usa: Invoke-WebRequest (sin rclone)
# ==========================================================

require 'time'
require 'json'
require 'optparse'
require_relative 'lib/dasu_executor'

opciones = {
  test_file: nil,
  file_id: nil
}

OptionParser.new do |opts|
  opts.banner = "Uso: dron lanzar --nota 'Download' --nodo dasu-sql4 -- ruby dasuten_download_drive.rb [opciones]"
  opts.on("--test-file ARCHIVO", "Archivo específico para test (ej: test_Backup.bak)") { |f| opciones[:test_file] = f }
  opts.on("--file-id ID", "Google Drive file ID") { |id| opciones[:file_id] = id }
end.parse!(ARGV)

BACKUP_DIR_WINDOWS = "F:\\BACKUP"
BACKUP_NAME_DEFAULT = "sysdasuten_compressed_ADN.bak"
JSON_PATH = "C:\temp\dron_download_output.json"

# Determinar archivo a descargar
if opciones[:test_file]
  puts "[*] Dron: Download desde Google Drive"
  puts "    Nodo: dasu-sql4"
  puts "    🧪 MODO TEST: Descargando archivo específico"
  file_id = opciones[:file_id] || "1P0cioDV9kZNXhIJhhdRMhWWjIRsVGcxQ"
  download_url = "https://drive.google.com/uc?export=download&id=#{file_id}"
  backup_name = opciones[:test_file]
  puts "    File ID: #{file_id}"
  puts "    Destino: #{BACKUP_DIR_WINDOWS}\\#{backup_name}"
elsif opciones[:file_id]
  puts "[*] Dron: Download desde Google Drive"
  puts "    Nodo: dasu-sql4"
  puts "    Download por file ID"
  download_url = "https://drive.google.com/uc?export=download&id=#{opciones[:file_id]}"
  backup_name = File.basename(opciones[:file_id])
  puts "    File ID: #{opciones[:file_id]}"
  puts "    Destino: #{BACKUP_DIR_WINDOWS}\\#{backup_name}"
else
  UPLOAD_OUTPUT = '/tmp/dron_upload_output.json'
  if File.exist?(UPLOAD_OUTPUT)
    upload_data = JSON.parse(File.read(UPLOAD_OUTPUT))
    drive_ruta = upload_data['drive_ruta']
    file_id = File.basename(drive_ruta)
    backup_name = File.basename(drive_ruta)
    download_url = "https://drive.google.com/uc?export=download&id=#{file_id}"
    puts "[*] Dron: Download desde Google Drive"
    puts "    Nodo: dasu-sql4"
    puts "    Drive ruta: #{drive_ruta}"
    puts "    File ID: #{file_id}"
    puts "    Destino: #{BACKUP_DIR_WINDOWS}\\#{backup_name}"
  else
    puts "[!] Error: Se requiere --test-file o --file-id"
    exit 1
  end
end

# PowerShell script para download
ps_script = <<~PSCMD.strip
  $ErrorActionPreference = "Stop"
  $BACKUP_DIR = "F:\\BACKUP"
  $DOWNLOAD_URL = "#{download_url}"
  $BACKUP_NAME = "#{backup_name}"
  $LOCAL_BACKUP = "$BACKUP_DIR\\$BACKUP_NAME"
  $JSON_PATH = "C:\\temp\\dron_download_output.json"

  $null = New-Item -ItemType Directory -Force -Path "C:\\temp"
  $null = New-Item -ItemType Directory -Force -Path $BACKUP_DIR

  Write-Host "[1/3] Iniciando descarga..."
  Write-Host "    URL: $DOWNLOAD_URL"

  Write-Host "[2/3] Descargando..."
  $start = Get-Date
  try {
    $response = Invoke-WebRequest -Uri $DOWNLOAD_URL -UseBasicParsing -Headers @{
      "User-Agent" = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"
    }

    $html = $response.Content
    $fileId = ""
    $uuid = ""
    $confirm = "t"
    if ($html -match 'name="id" value="([^"]+)"') { $fileId = $matches[1] }
    if ($html -match 'name="uuid" value="([^"]+)"') { $uuid = $matches[1] }
    if ($html -match 'name="confirm" value="([^"]+)"') { $confirm = $matches[1] }

    Write-Host "    File ID: $fileId"
    Write-Host "    UUID: $uuid"

    $downloadConfirmUrl = "https://drive.usercontent.google.com/download?id=$fileId&export=download&confirm=$confirm&uuid=$uuid"
    Write-Host "    URL confirmada: $downloadConfirmUrl"

    $finalResponse = Invoke-WebRequest -Uri $downloadConfirmUrl -UseBasicParsing -Headers @{
      "User-Agent" = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"
    }

    [System.IO.File]::WriteAllBytes($LOCAL_BACKUP, $finalResponse.Content)

    $dur = (New-TimeSpan -Start $start -End (Get-Date)).TotalSeconds
    Write-Host "[+] Descarga en $([math]::Round($dur, 2))s"
  } catch {
    Write-Host "[!] Error: $_"
    exit 1
  }

  Write-Host "[3/3] Verificando..."
  if (Test-Path $LOCAL_BACKUP) {
    $tam = (Get-Item $LOCAL_BACKUP).Length
    Write-Host "    Tamano: $([math]::Round($tam / 1MB, 2)) MB"
    if ($tam -eq 0) {
      Write-Host "[!] Archivo vacío"
      exit 1
    }
  } else {
    Write-Host "[!] No existe"
    exit 1
  }

  $res = @{
    paso = "download_complete"
    backup_local = $LOCAL_BACKUP
    drive_origen = "Google Drive"
    nodo = "dasu-sql4"
    duracion = [math]::Round($dur, 2)
    timestamp = (Get-Date -Format "o")
    siguiente_paso = "restaurar_backup"
  }
  $res | ConvertTo-Json | Out-File -FilePath $JSON_PATH -Encoding utf8
  Write-Host "    Output: $($res | ConvertTo-Json -Compress)"
PSCMD

puts "\n[1/2] Ejecutando download en dasu-sql4..."
DasuExecutor.execute_ps_on_dasu(ps_script, output_path: JSON_PATH)

puts "\n[2/2] Leyendo output JSON..."
resultado = DasuExecutor.read_json_from_dasu(JSON_PATH)

puts "   Output: #{resultado.to_json}"

puts "\n✅ Download completado"
puts "    Backup: #{resultado['backup_local']}"
puts "    Duración: #{resultado['duracion']}s"

File.write('/tmp/dron_download_output.json', resultado.to_json)
puts "    JSON guardado en: /tmp/dron_download_output.json"