$path = 'app\src\main\kotlin\com\bodycamera\twentyfoulabs\camera\M530CameraActivity.kt'

$lines = Get-Content $path
$result = New-Object System.Collections.Generic.List[string]

$addedVariable = $false
$addedButtonDeclaration = $false
$addedButtonUi = $false
$replacedSelector = $false
$replacedState = $false

foreach ($line in $lines) {

    # ---------------------------------------------------------
    # 1. Variable para saber que camara usa el preview
    # ---------------------------------------------------------
    if (-not $addedVariable -and
        $line -match 'private var lastTouchActionMs = 0L') {

        $result.Add($line)
        $result.Add('    private var frontPreviewUsesFrontCamera = true')
        $addedVariable = $true
        continue
    }

    # ---------------------------------------------------------
    # 2. Declaracion del boton
    # ---------------------------------------------------------
    if (-not $addedButtonDeclaration -and
        $line -match 'private lateinit var closeButton: Button') {

        $result.Add($line)
        $result.Add('    private lateinit var switchCameraButton: Button')
        $addedButtonDeclaration = $true
        continue
    }

    # ---------------------------------------------------------
    # 3. Insertar boton antes de captureButton
    # ---------------------------------------------------------
    if (-not $addedButtonUi -and
        $line -match '^\s*captureButton = Button\(this\)\.apply') {

        $result.Add('        switchCameraButton = Button(this).apply {')
        $result.Add('            text = "CAMBIAR"')
        $result.Add('            setTextColor(Color.WHITE)')
        $result.Add('            textSize = 12f')
        $result.Add('            setTypeface(typeface, Typeface.BOLD)')
        $result.Add('            gravity = Gravity.CENTER')
        $result.Add('            minWidth = 0')
        $result.Add('            minHeight = 0')
        $result.Add('            setPadding(dp(8), 0, dp(8), 0)')
        $result.Add('            background = circleDrawable(0xB0000000.toInt(), Color.WHITE, dp(1))')
        $result.Add('            visibility = if (mode == MODE_FRONT_PREVIEW) View.VISIBLE else View.GONE')
        $result.Add('            elevation = dp(12).toFloat()')
        $result.Add('')
        $result.Add('            setOnClickListener {')
        $result.Add('                if (mode == MODE_FRONT_PREVIEW) {')
        $result.Add('                    frontPreviewUsesFrontCamera = !frontPreviewUsesFrontCamera')
        $result.Add('                    startCamera()')
        $result.Add('                }')
        $result.Add('            }')
        $result.Add('        }')
        $result.Add('')
        $result.Add('        root.addView(')
        $result.Add('            switchCameraButton,')
        $result.Add('            FrameLayout.LayoutParams(dp(110), dp(48), Gravity.BOTTOM or Gravity.CENTER_HORIZONTAL).apply {')
        $result.Add('                bottomMargin = dp(76)')
        $result.Add('            }')
        $result.Add('        )')
        $result.Add('')

        $result.Add($line)
        $addedButtonUi = $true
        continue
    }

    # ---------------------------------------------------------
    # 4. Selector dinamico frontal/posterior SOLO para preview
    # ---------------------------------------------------------
    if (-not $replacedSelector -and
        $line -match 'CameraSelector\.DEFAULT_FRONT_CAMERA') {

        $result.Add('                        if (frontPreviewUsesFrontCamera)')
        $result.Add('                            CameraSelector.DEFAULT_FRONT_CAMERA')
        $result.Add('                        else')
        $result.Add('                            CameraSelector.DEFAULT_BACK_CAMERA,')
        $replacedSelector = $true
        continue
    }

    # ---------------------------------------------------------
    # 5. Cambiar mensaje segun camara
    # ---------------------------------------------------------
    if (-not $replacedState -and
        $line -match 'stateText\.text = "Camara frontal lista"') {

        $result.Add('                    stateText.text = if (frontPreviewUsesFrontCamera)')
        $result.Add('                        "Camara frontal lista"')
        $result.Add('                    else')
        $result.Add('                        "Camara posterior lista"')
        $replacedState = $true
        continue
    }

    $result.Add($line)
}

Set-Content -Path $path -Value $result -Encoding UTF8

Write-Host ""
Write-Host "=========================================="
Write-Host "CAMBIO DE CAMARA AGREGADO"
Write-Host "=========================================="
Write-Host "Variable: $addedVariable"
Write-Host "Declaracion boton: $addedButtonDeclaration"
Write-Host "UI boton: $addedButtonUi"
Write-Host "Selector: $replacedSelector"
Write-Host "Estado: $replacedState"
Write-Host ""