runUninstallWizard.ps1

#Requires -Version 5.1
<#
.SYNOPSIS
    Graphical uninstall wizard for Data Entry Autonoma.

.DESCRIPTION
    Removes installed application files, optional user data, apply-state.ini,
    and Desktop / Start Menu shortcuts from a chosen install folder.
    Run from the project root, release zip, or install folder:
    .\runUninstallWizard.ps1
#>

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$ErrorActionPreference = "Stop"

# =============================================================================
# Constants
# =============================================================================

$APP_DISPLAY_NAME = "Data Entry Autonoma"
$APP_FOLDER_NAME = "DataEntryAutonoma"
$EXE_FILE_NAME = "DataEntryAutonoma.exe"
$SHORTCUT_FILE_NAME = "$APP_DISPLAY_NAME.lnk"
$LICENSE_FILE_NAME = "LICENSE"
$README_FILE_NAME = "README.md"
$CHANGELOG_FILE_NAME = "CHANGELOG.md"
$VERSION_FILE_NAME = "VERSION"
$INSTALL_WIZARD_PS1 = "runInstallWizard.ps1"
$INSTALL_WIZARD_BAT = "runInstallWizard.bat"
$APP_VERSION_FALLBACK = "1.3.0"
$APPLY_STATE_FILE_NAME = "apply-state.ini"
$RECORDINGS_FOLDER_NAME = "recordings"
$SAVED_INPUTS_FOLDER_NAME = "saved-inputs"
$CSV_BATCHES_FOLDER_NAME = "csv-batches"
$ASSETS_FOLDER_NAME = "assets"

$UNINSTALL_SCRIPT_NAME = "runUninstallWizard.ps1"
$UNINSTALL_BATCH_NAME = "runUninstallWizard.bat"

$DEFAULT_INSTALL_DIR = Join-Path (Join-Path $env:LOCALAPPDATA "Programs") $APP_FOLDER_NAME

$WIZARD_WIDTH = 520
$WIZARD_HEIGHT = 480
$CONTENT_WIDTH = 460

$COLOR_BG = [System.Drawing.Color]::FromArgb(248, 249, 250)
$COLOR_TEXT = [System.Drawing.Color]::FromArgb(26, 26, 26)
$COLOR_MUTED = [System.Drawing.Color]::FromArgb(107, 114, 128)
$COLOR_SUCCESS = [System.Drawing.Color]::FromArgb(6, 95, 70)
$COLOR_ERROR = [System.Drawing.Color]::FromArgb(185, 28, 28)
$COLOR_WARNING = [System.Drawing.Color]::FromArgb(180, 83, 9)

$SCRIPT_ROOT = $PSScriptRoot

# =============================================================================
# Uninstall helpers
# =============================================================================

# Returns true when the install folder contains the application exe.
function Test-InstallFolderValid {
    param([string]$InstallDir)

    if (-not $InstallDir) {
        return $false
    }

    if (-not (Test-Path $InstallDir)) {
        return $false
    }

    $exePath = Join-Path $InstallDir $EXE_FILE_NAME
    return Test-Path $exePath
}

# Returns true when this wizard is running from inside the install folder.
function Test-RunningFromInstallDir {
    param([string]$InstallDir)

    $scriptRoot = $SCRIPT_ROOT.TrimEnd('\')
    $installRoot = $InstallDir.TrimEnd('\')
    return ($scriptRoot -eq $installRoot)
}

# Returns the installed app version from VERSION in the install folder.
function Get-InstalledVersion {
    param([string]$InstallDir)

    if (-not $InstallDir) {
        return ""
    }

    $versionPath = Join-Path $InstallDir $VERSION_FILE_NAME
    if (Test-Path $versionPath) {
        return (Get-Content -LiteralPath $versionPath -Raw).Trim()
    }

    return ""
}

# Returns VERSION from the wizard script folder when not running from an install dir.
function Get-LocalWizardVersion {
    $versionPath = Join-Path $SCRIPT_ROOT $VERSION_FILE_NAME
    if (Test-Path $versionPath) {
        return (Get-Content -LiteralPath $versionPath -Raw).Trim()
    }

    return $APP_VERSION_FALLBACK
}

# Returns the uninstall wizard window title with the active version label.
function Get-UninstallWizardFormTitle {
    param([string]$Version = $script:WizardAppVersion)

    if ($Version) {
        return "$APP_DISPLAY_NAME Uninstall v$Version"
    }

    return "$APP_DISPLAY_NAME Uninstall"
}

# Updates the uninstall wizard form title from the current version label.
function Update-UninstallWizardFormTitle {
    param([string]$Version = $script:WizardAppVersion)

    if ($form) {
        $form.Text = Get-UninstallWizardFormTitle -Version $Version
    }
}

# Removes a file or folder when it exists.
function Remove-IfExists {
    param([string]$Path)

    if (-not (Test-Path $Path)) {
        return
    }

    Remove-Item -LiteralPath $Path -Recurse -Force
}

# Removes Desktop and/or Start Menu shortcuts for the app.
function Remove-InstallShortcuts {
    param(
        [bool]$RemoveDesktopShortcut,
        [bool]$RemoveStartMenuShortcut
    )

    if ($RemoveDesktopShortcut) {
        Remove-IfExists (Join-Path ([Environment]::GetFolderPath("Desktop")) $SHORTCUT_FILE_NAME)
    }

    if ($RemoveStartMenuShortcut) {
        $programsDir = Join-Path $env:APPDATA "Microsoft\Windows\Start Menu\Programs"
        Remove-IfExists (Join-Path $programsDir $SHORTCUT_FILE_NAME)
    }
}

# Schedules deletion of uninstaller scripts and optionally the install folder after this wizard exits.
function Schedule-PostUninstallCleanup {
    param(
        [string]$InstallDir,
        [bool]$RemoveEntireFolder
    )

    $uninstallScriptPath = Join-Path $InstallDir $UNINSTALL_SCRIPT_NAME
    $uninstallBatchPath = Join-Path $InstallDir $UNINSTALL_BATCH_NAME
    $cleanupBatchPath = Join-Path $env:TEMP ("DataEntryAutonoma_cleanup_{0}.bat" -f ([guid]::NewGuid().ToString("N")))

    if ($RemoveEntireFolder) {
        $batchContent = @"
@echo off
ping 127.0.0.1 -n 3 > nul
rd /s /q "$InstallDir"
del /f /q "%~f0"
"@
    } else {
        $batchContent = @"
@echo off
ping 127.0.0.1 -n 3 > nul
del /f /q "$uninstallScriptPath" 2>nul
del /f /q "$uninstallBatchPath" 2>nul
del /f /q "%~f0"
"@
    }

    Set-Content -LiteralPath $cleanupBatchPath -Value $batchContent -Encoding ASCII
    Start-Process -FilePath $cleanupBatchPath -WindowStyle Hidden
}

# Performs the selected uninstall actions.
function Invoke-UninstallApplication {
    param(
        [string]$InstallDir,
        [bool]$RemoveAppFiles,
        [bool]$RemoveUserData,
        [bool]$RemoveApplyState,
        [bool]$RemoveDesktopShortcut,
        [bool]$RemoveStartMenuShortcut
    )

    $runningFromInstallDir = Test-RunningFromInstallDir -InstallDir $InstallDir
    $removedItems = New-Object System.Collections.Generic.List[string]

    Remove-InstallShortcuts `
        -RemoveDesktopShortcut $RemoveDesktopShortcut `
        -RemoveStartMenuShortcut $RemoveStartMenuShortcut

    if ($RemoveDesktopShortcut) {
        $removedItems.Add("Desktop shortcut") | Out-Null
    }
    if ($RemoveStartMenuShortcut) {
        $removedItems.Add("Start Menu shortcut") | Out-Null
    }

    if ($RemoveApplyState) {
        $applyStatePath = Join-Path $InstallDir $APPLY_STATE_FILE_NAME
        if (Test-Path $applyStatePath) {
            Remove-IfExists $applyStatePath
            $removedItems.Add($APPLY_STATE_FILE_NAME) | Out-Null
        }
    }

    if ($RemoveUserData) {
        $recordingsPath = Join-Path $InstallDir $RECORDINGS_FOLDER_NAME
        $savedInputsPath = Join-Path $InstallDir $SAVED_INPUTS_FOLDER_NAME
        $csvBatchesPath = Join-Path $InstallDir $CSV_BATCHES_FOLDER_NAME

        if (Test-Path $recordingsPath) {
            Remove-IfExists $recordingsPath
            $removedItems.Add("$RECORDINGS_FOLDER_NAME\ folder") | Out-Null
        }
        if (Test-Path $savedInputsPath) {
            Remove-IfExists $savedInputsPath
            $removedItems.Add("$SAVED_INPUTS_FOLDER_NAME\ folder") | Out-Null
        }
        if (Test-Path $csvBatchesPath) {
            Remove-IfExists $csvBatchesPath
            $removedItems.Add("$CSV_BATCHES_FOLDER_NAME\ folder") | Out-Null
        }
    }

    if ($RemoveAppFiles) {
        $appPaths = @(
            (Join-Path $InstallDir $EXE_FILE_NAME),
            (Join-Path $InstallDir $LICENSE_FILE_NAME),
            (Join-Path $InstallDir $README_FILE_NAME),
            (Join-Path $InstallDir $CHANGELOG_FILE_NAME),
            (Join-Path $InstallDir $VERSION_FILE_NAME),
            (Join-Path $InstallDir $INSTALL_WIZARD_PS1),
            (Join-Path $InstallDir $INSTALL_WIZARD_BAT),
            (Join-Path $InstallDir $ASSETS_FOLDER_NAME)
        )

        foreach ($path in $appPaths) {
            if (Test-Path $path) {
                Remove-IfExists $path
            }
        }

        $removedItems.Add("Application files ($EXE_FILE_NAME, docs, wizards, $ASSETS_FOLDER_NAME\)") | Out-Null

        if ($runningFromInstallDir) {
            $remainingItems = @(Get-ChildItem -LiteralPath $InstallDir -Force -ErrorAction SilentlyContinue | Where-Object {
                $_.Name -ne $UNINSTALL_SCRIPT_NAME -and $_.Name -ne $UNINSTALL_BATCH_NAME
            })
            $removeEntireFolder = ($remainingItems.Count -eq 0)
            Schedule-PostUninstallCleanup -InstallDir $InstallDir -RemoveEntireFolder $removeEntireFolder

            if ($removeEntireFolder) {
                $removedItems.Add("Remaining install folder (scheduled after wizard closes)") | Out-Null
            } else {
                $removedItems.Add("Uninstaller scripts (scheduled after wizard closes)") | Out-Null
            }
        } else {
            Remove-IfExists (Join-Path $InstallDir $UNINSTALL_SCRIPT_NAME)
            Remove-IfExists (Join-Path $InstallDir $UNINSTALL_BATCH_NAME)

            $remainingItems = @(Get-ChildItem -LiteralPath $InstallDir -Force -ErrorAction SilentlyContinue)
            if ($remainingItems.Count -eq 0) {
                Remove-IfExists $InstallDir
                $removedItems.Add("Install folder") | Out-Null
            }
        }
    }

    return $removedItems
}

# Builds a summary string for the confirmation step.
function Get-UninstallSummaryText {
    param(
        [string]$InstallDir,
        [bool]$RemoveAppFiles,
        [bool]$RemoveUserData,
        [bool]$RemoveApplyState,
        [bool]$RemoveDesktopShortcut,
        [bool]$RemoveStartMenuShortcut
    )

    $installedVersion = Get-InstalledVersion -InstallDir $InstallDir
    $lines = New-Object System.Collections.Generic.List[string]
    if ($installedVersion) {
        $lines.Add("Installed version: v$installedVersion") | Out-Null
        $lines.Add("") | Out-Null
    }
    $lines.Add("Install folder:") | Out-Null
    $lines.Add($InstallDir) | Out-Null
    $lines.Add("") | Out-Null
    $lines.Add("The following will be removed:") | Out-Null

    if ($RemoveAppFiles) {
        $lines.Add("  - Application files ($EXE_FILE_NAME, $VERSION_FILE_NAME, $CHANGELOG_FILE_NAME, wizards, $ASSETS_FOLDER_NAME\)") | Out-Null
    }
    if ($RemoveUserData) {
        $lines.Add("  - User data ($RECORDINGS_FOLDER_NAME\, $SAVED_INPUTS_FOLDER_NAME\, and $CSV_BATCHES_FOLDER_NAME\)") | Out-Null
    }
    if ($RemoveApplyState) {
        $lines.Add("  - $APPLY_STATE_FILE_NAME") | Out-Null
    }
    if ($RemoveDesktopShortcut) {
        $lines.Add("  - Desktop shortcut") | Out-Null
    }
    if ($RemoveStartMenuShortcut) {
        $lines.Add("  - Start Menu shortcut") | Out-Null
    }

    $selectedCount = 0
    if ($RemoveAppFiles) { $selectedCount++ }
    if ($RemoveUserData) { $selectedCount++ }
    if ($RemoveApplyState) { $selectedCount++ }
    if ($RemoveDesktopShortcut) { $selectedCount++ }
    if ($RemoveStartMenuShortcut) { $selectedCount++ }

    if ($selectedCount -eq 0) {
        $lines.Add("  - Nothing selected") | Out-Null
    }

    if (Test-RunningFromInstallDir -InstallDir $InstallDir) {
        $lines.Add("") | Out-Null
        $lines.Add("Note: The uninstaller is running from the install folder.") | Out-Null
        $lines.Add("Any remaining files will be deleted after this wizard closes.") | Out-Null
    }

    return ($lines -join "`r`n")
}

# =============================================================================
# Wizard UI
# =============================================================================

[System.Windows.Forms.Application]::EnableVisualStyles()
[System.Windows.Forms.Application]::SetUnhandledExceptionMode([System.Windows.Forms.UnhandledExceptionMode]::CatchException)
[System.Windows.Forms.Application]::add_ThreadException({
    param($sender, $eventArgs)

    [System.Windows.Forms.MessageBox]::Show(
        "Uninstall error:`r`n$($eventArgs.Exception.Message)",
        $APP_DISPLAY_NAME,
        [System.Windows.Forms.MessageBoxButtons]::OK,
        [System.Windows.Forms.MessageBoxIcon]::Error
    ) | Out-Null
    $eventArgs.ExceptionHandled = $true
})

$script:CurrentStep = 0
$script:InstallDir = $DEFAULT_INSTALL_DIR
$script:WizardAppVersion = Get-InstalledVersion -InstallDir $DEFAULT_INSTALL_DIR
if (-not $script:WizardAppVersion) {
    $script:WizardAppVersion = Get-LocalWizardVersion
}
$script:RemoveAppFiles = $true
$script:RemoveUserData = $true
$script:RemoveApplyState = $true
$script:RemoveDesktopShortcut = $true
$script:RemoveStartMenuShortcut = $true
$script:LastUninstallResult = $null
$script:Step4_Failed = $false

$form = New-Object System.Windows.Forms.Form
$form.Text = Get-UninstallWizardFormTitle -Version $script:WizardAppVersion
$form.ClientSize = New-Object System.Drawing.Size($WIZARD_WIDTH, $WIZARD_HEIGHT)
$form.FormBorderStyle = "FixedDialog"
$form.MaximizeBox = $false
$form.MinimizeBox = $false
$form.StartPosition = "CenterScreen"
$form.BackColor = $COLOR_BG
$form.Font = New-Object System.Drawing.Font("Segoe UI", 10)

$contentPanel = New-Object System.Windows.Forms.Panel
$contentPanel.Location = New-Object System.Drawing.Point(30, 20)
$contentPanel.Size = New-Object System.Drawing.Size($CONTENT_WIDTH, 320)
$contentPanel.BackColor = $COLOR_BG
$form.Controls.Add($contentPanel)

$btnBack = New-Object System.Windows.Forms.Button
$btnBack.Text = "< Back"
$btnBack.Size = New-Object System.Drawing.Size(90, 32)
$btnBack.Location = New-Object System.Drawing.Point(230, 370)
$form.Controls.Add($btnBack)

$btnNext = New-Object System.Windows.Forms.Button
$btnNext.Text = "Next >"
$btnNext.Size = New-Object System.Drawing.Size(90, 32)
$btnNext.Location = New-Object System.Drawing.Point(330, 370)
$form.Controls.Add($btnNext)

$btnCancel = New-Object System.Windows.Forms.Button
$btnCancel.Text = "Cancel"
$btnCancel.Size = New-Object System.Drawing.Size(90, 32)
$btnCancel.Location = New-Object System.Drawing.Point(420, 370)
$form.Controls.Add($btnCancel)

function Clear-ContentPanel {
    $contentPanel.Controls.Clear()
}

function New-TitleLabel {
    param([string]$Text)

    $label = New-Object System.Windows.Forms.Label
    $label.Text = $Text
    $label.AutoSize = $false
    $label.Size = New-Object System.Drawing.Size($CONTENT_WIDTH, 32)
    $label.Font = New-Object System.Drawing.Font("Segoe UI", 14, [System.Drawing.FontStyle]::Bold)
    $label.ForeColor = $COLOR_TEXT
    return $label
}

function New-BodyLabel {
    param(
        [string]$Text,
        [int]$Height = 120
    )

    $label = New-Object System.Windows.Forms.Label
    $label.Text = $Text
    $label.AutoSize = $false
    $label.Size = New-Object System.Drawing.Size($CONTENT_WIDTH, $Height)
    $label.ForeColor = $COLOR_MUTED
    return $label
}

function Show-WizardStep {
    Clear-ContentPanel

    switch ($script:CurrentStep) {
        0 {
            $btnBack.Enabled = $false
            $btnNext.Text = "Next >"
            $btnCancel.Enabled = $true

            $title = New-TitleLabel "Welcome"
            $title.Location = New-Object System.Drawing.Point(0, 0)
            $contentPanel.Controls.Add($title)

            $welcomeText = @"
This wizard removes $APP_DISPLAY_NAME from your computer.

You can choose which files, user data, and shortcuts to remove. Recordings, saved presets, and CSV bulk inputs in csv-batches can be deleted permanently if you select that option.
"@
            if ($script:WizardAppVersion) {
                $welcomeText += "`r`n`r`nInstalled version: v$($script:WizardAppVersion)"
            }
            $welcomeText += "`r`n`r`nReinstall later with runInstallWizard.bat from a release zip.`r`n`r`nClick Next to choose the install folder and select what to remove."
            $body = New-BodyLabel $welcomeText $(if ($script:WizardAppVersion) { 260 } else { 240 })
            $body.Location = New-Object System.Drawing.Point(0, 44)
            $contentPanel.Controls.Add($body)
        }

        1 {
            $btnBack.Enabled = $true
            $btnNext.Text = "Next >"
            $btnCancel.Enabled = $true

            $title = New-TitleLabel "Install location"
            $title.Location = New-Object System.Drawing.Point(0, 0)
            $contentPanel.Controls.Add($title)

            $body = New-BodyLabel "Choose the folder where $APP_DISPLAY_NAME is installed." 40
            $body.Location = New-Object System.Drawing.Point(0, 44)
            $contentPanel.Controls.Add($body)

            $pathBox = New-Object System.Windows.Forms.TextBox
            $pathBox.Text = $script:InstallDir
            $pathBox.Size = New-Object System.Drawing.Size(350, 28)
            $pathBox.Location = New-Object System.Drawing.Point(0, 92)
            $contentPanel.Controls.Add($pathBox)

            $btnBrowse = New-Object System.Windows.Forms.Button
            $btnBrowse.Text = "Browse..."
            $btnBrowse.Size = New-Object System.Drawing.Size(90, 28)
            $btnBrowse.Location = New-Object System.Drawing.Point(360, 90)
            $contentPanel.Controls.Add($btnBrowse)

            $hint = New-BodyLabel "Default location: $DEFAULT_INSTALL_DIR`r`nThe folder must contain $EXE_FILE_NAME." 72
            $hint.Location = New-Object System.Drawing.Point(0, 130)
            $contentPanel.Controls.Add($hint)

            $btnBrowse.Add_Click({
                $dialog = New-Object System.Windows.Forms.FolderBrowserDialog
                $dialog.Description = "Select install folder"
                if (Test-Path $pathBox.Text) {
                    $dialog.SelectedPath = $pathBox.Text
                } else {
                    $dialog.SelectedPath = $DEFAULT_INSTALL_DIR
                }
                if ($dialog.ShowDialog() -eq [System.Windows.Forms.DialogResult]::OK) {
                    $pathBox.Text = $dialog.SelectedPath
                }
            })

            $script:Step1_PathBox = $pathBox
        }

        2 {
            $btnBack.Enabled = $true
            $btnNext.Text = "Next >"
            $btnCancel.Enabled = $true

            $title = New-TitleLabel "Removal options"
            $title.Location = New-Object System.Drawing.Point(0, 0)
            $contentPanel.Controls.Add($title)

            $chkAppFiles = New-Object System.Windows.Forms.CheckBox
            $chkAppFiles.Text = "Remove application files ($EXE_FILE_NAME, $VERSION_FILE_NAME, $CHANGELOG_FILE_NAME, wizards, $ASSETS_FOLDER_NAME\)"
            $chkAppFiles.AutoSize = $true
            $chkAppFiles.Location = New-Object System.Drawing.Point(0, 44)
            $chkAppFiles.Checked = $script:RemoveAppFiles
            $contentPanel.Controls.Add($chkAppFiles)

            $chkUserData = New-Object System.Windows.Forms.CheckBox
            $chkUserData.Text = "Remove recordings, saved presets, and CSV bulk inputs (deletes your user data permanently)"
            $chkUserData.AutoSize = $true
            $chkUserData.Location = New-Object System.Drawing.Point(0, 74)
            $chkUserData.Checked = $script:RemoveUserData
            $contentPanel.Controls.Add($chkUserData)

            $chkApplyState = New-Object System.Windows.Forms.CheckBox
            $chkApplyState.Text = "Remove $APPLY_STATE_FILE_NAME (last selected recording, preset, and CSV)"
            $chkApplyState.AutoSize = $true
            $chkApplyState.Location = New-Object System.Drawing.Point(0, 104)
            $chkApplyState.Checked = $script:RemoveApplyState
            $contentPanel.Controls.Add($chkApplyState)

            $chkDesktop = New-Object System.Windows.Forms.CheckBox
            $chkDesktop.Text = "Remove Desktop shortcut"
            $chkDesktop.AutoSize = $true
            $chkDesktop.Location = New-Object System.Drawing.Point(0, 134)
            $chkDesktop.Checked = $script:RemoveDesktopShortcut
            $contentPanel.Controls.Add($chkDesktop)

            $chkStart = New-Object System.Windows.Forms.CheckBox
            $chkStart.Text = "Remove Start Menu shortcut"
            $chkStart.AutoSize = $true
            $chkStart.Location = New-Object System.Drawing.Point(0, 164)
            $chkStart.Checked = $script:RemoveStartMenuShortcut
            $contentPanel.Controls.Add($chkStart)

            $warn = New-BodyLabel "Warning: Removing recordings, presets, and CSV files cannot be undone. You will be asked to confirm on the next step." 56
            $warn.ForeColor = $COLOR_WARNING
            $warn.Location = New-Object System.Drawing.Point(0, 200)
            $contentPanel.Controls.Add($warn)

            $script:Step2_AppFiles = $chkAppFiles
            $script:Step2_UserData = $chkUserData
            $script:Step2_ApplyState = $chkApplyState
            $script:Step2_Desktop = $chkDesktop
            $script:Step2_Start = $chkStart
        }

        3 {
            $btnBack.Enabled = $true
            $btnNext.Text = "Uninstall"
            $btnCancel.Enabled = $true

            $title = New-TitleLabel "Confirm removal"
            $title.Location = New-Object System.Drawing.Point(0, 0)
            $contentPanel.Controls.Add($title)

            $summaryText = Get-UninstallSummaryText `
                -InstallDir $script:InstallDir `
                -RemoveAppFiles $script:RemoveAppFiles `
                -RemoveUserData $script:RemoveUserData `
                -RemoveApplyState $script:RemoveApplyState `
                -RemoveDesktopShortcut $script:RemoveDesktopShortcut `
                -RemoveStartMenuShortcut $script:RemoveStartMenuShortcut

            $summary = New-BodyLabel $summaryText 250
            $summary.Location = New-Object System.Drawing.Point(0, 44)
            $contentPanel.Controls.Add($summary)
        }

        4 {
            $btnBack.Enabled = $false
            $btnNext.Text = "Finish"
            $btnCancel.Enabled = $false

            $title = New-TitleLabel "Removing"
            $title.Location = New-Object System.Drawing.Point(0, 0)
            $contentPanel.Controls.Add($title)

            $progress = New-Object System.Windows.Forms.ProgressBar
            $progress.Style = "Marquee"
            $progress.MarqueeAnimationSpeed = 30
            $progress.Size = New-Object System.Drawing.Size($CONTENT_WIDTH, 24)
            $progress.Location = New-Object System.Drawing.Point(0, 56)
            $contentPanel.Controls.Add($progress)

            $status = New-BodyLabel "Removing selected items..." 180
            $status.Location = New-Object System.Drawing.Point(0, 92)
            $contentPanel.Controls.Add($status)

            try {
                [System.Windows.Forms.Application]::DoEvents()
                $script:LastUninstallResult = Invoke-UninstallApplication `
                    -InstallDir $script:InstallDir `
                    -RemoveAppFiles $script:RemoveAppFiles `
                    -RemoveUserData $script:RemoveUserData `
                    -RemoveApplyState $script:RemoveApplyState `
                    -RemoveDesktopShortcut $script:RemoveDesktopShortcut `
                    -RemoveStartMenuShortcut $script:RemoveStartMenuShortcut

                $progress.Style = "Continuous"
                $progress.Value = 100
                $status.ForeColor = $COLOR_SUCCESS

                $resultLines = @("Uninstall completed successfully.", "", "Removed:")
                foreach ($item in $script:LastUninstallResult) {
                    $resultLines += "  - $item"
                }
                if ($script:LastUninstallResult.Count -eq 0) {
                    $resultLines += "  - No matching files or shortcuts were found."
                }

                if (Test-RunningFromInstallDir -InstallDir $script:InstallDir -and $script:RemoveAppFiles) {
                    $resultLines += ""
                    $resultLines += "Remaining install files will be removed shortly after you close this wizard."
                }

                $status.Text = ($resultLines -join "`r`n")
            } catch {
                $progress.Style = "Continuous"
                $progress.Value = 0
                $status.ForeColor = $COLOR_ERROR
                $status.Text = "Uninstall failed:`r`n$($_.Exception.Message)"
                $script:Step4_Failed = $true
                $btnNext.Text = "Close"
            }
        }

        5 {
            $btnBack.Enabled = $false
            $btnNext.Text = "Close"
            $btnCancel.Enabled = $false

            $title = New-TitleLabel "Uninstall complete"
            $title.Location = New-Object System.Drawing.Point(0, 0)
            $contentPanel.Controls.Add($title)

            $bodyText = @"
$APP_DISPLAY_NAME has been removed based on your selections.

If you removed application files, the app is no longer installed on this PC. To install again, run runInstallWizard.bat from a release zip.
"@
            if (Test-RunningFromInstallDir -InstallDir $script:InstallDir -and $script:RemoveAppFiles) {
                $bodyText += @"

The install folder and uninstaller will be deleted automatically after you close this wizard if no other files remain.
"@
            }

            $body = New-BodyLabel $bodyText 180
            $body.Location = New-Object System.Drawing.Point(0, 44)
            $contentPanel.Controls.Add($body)
        }
    }
}

function Save-CurrentStepState {
    switch ($script:CurrentStep) {
        1 {
            $script:InstallDir = $script:Step1_PathBox.Text.Trim()
            $script:WizardAppVersion = Get-InstalledVersion -InstallDir $script:InstallDir
            if (-not $script:WizardAppVersion) {
                $script:WizardAppVersion = Get-LocalWizardVersion
            }
            Update-UninstallWizardFormTitle -Version $script:WizardAppVersion
        }
        2 {
            $script:RemoveAppFiles = $script:Step2_AppFiles.Checked
            $script:RemoveUserData = $script:Step2_UserData.Checked
            $script:RemoveApplyState = $script:Step2_ApplyState.Checked
            $script:RemoveDesktopShortcut = $script:Step2_Desktop.Checked
            $script:RemoveStartMenuShortcut = $script:Step2_Start.Checked
        }
    }
}

function Test-CurrentStepValid {
    switch ($script:CurrentStep) {
        1 {
            $path = $script:Step1_PathBox.Text.Trim()
            if (-not $path) {
                [System.Windows.Forms.MessageBox]::Show(
                    "Please choose an install folder.",
                    $APP_DISPLAY_NAME,
                    [System.Windows.Forms.MessageBoxButtons]::OK,
                    [System.Windows.Forms.MessageBoxIcon]::Warning
                ) | Out-Null
                return $false
            }

            $script:InstallDir = $path

            if (-not (Test-Path $script:InstallDir)) {
                [System.Windows.Forms.MessageBox]::Show(
                    @"
The install folder was not found:

$script:InstallDir

Choose the folder where $APP_DISPLAY_NAME is installed, or cancel if the app is not installed on this PC.
"@,
                    $APP_DISPLAY_NAME,
                    [System.Windows.Forms.MessageBoxButtons]::OK,
                    [System.Windows.Forms.MessageBoxIcon]::Information
                ) | Out-Null
                return $false
            }

            if (-not (Test-InstallFolderValid -InstallDir $script:InstallDir)) {
                [System.Windows.Forms.MessageBox]::Show(
                    @"
$EXE_FILE_NAME was not found in:

$script:InstallDir

This folder does not look like a $APP_DISPLAY_NAME installation. Choose the correct folder or cancel.
"@,
                    $APP_DISPLAY_NAME,
                    [System.Windows.Forms.MessageBoxButtons]::OK,
                    [System.Windows.Forms.MessageBoxIcon]::Information
                ) | Out-Null
                return $false
            }
        }
        2 {
            if (-not ($script:Step2_AppFiles.Checked -or
                $script:Step2_UserData.Checked -or
                $script:Step2_ApplyState.Checked -or
                $script:Step2_Desktop.Checked -or
                $script:Step2_Start.Checked)) {
                [System.Windows.Forms.MessageBox]::Show(
                    "Select at least one item to remove, or click Cancel to exit.",
                    $APP_DISPLAY_NAME,
                    [System.Windows.Forms.MessageBoxButtons]::OK,
                    [System.Windows.Forms.MessageBoxIcon]::Warning
                ) | Out-Null
                return $false
            }
        }
        3 {
            if ($script:RemoveUserData) {
                $confirm = [System.Windows.Forms.MessageBox]::Show(
                    @"
You selected removal of recordings, saved presets, and CSV bulk inputs.

This permanently deletes your user data and cannot be undone.

Continue with uninstall?
"@,
                    $APP_DISPLAY_NAME,
                    [System.Windows.Forms.MessageBoxButtons]::YesNo,
                    [System.Windows.Forms.MessageBoxIcon]::Warning
                )
                if ($confirm -ne [System.Windows.Forms.DialogResult]::Yes) {
                    return $false
                }
            }
        }
    }

    return $true
}

$btnCancel.Add_Click({ $form.Close() })

$btnBack.Add_Click({
    if ($script:CurrentStep -gt 0) {
        Save-CurrentStepState
        $script:CurrentStep -= 1
        Show-WizardStep
    }
})

$btnNext.Add_Click({
    if ($script:CurrentStep -eq 5) {
        $form.Close()
        return
    }

    if ($script:CurrentStep -eq 4) {
        $form.Close()
        return
    }

    Save-CurrentStepState

    if (-not (Test-CurrentStepValid)) {
        return
    }

    if ($script:CurrentStep -eq 3) {
        $script:Step4_Failed = $false
        $script:CurrentStep = 4
        Show-WizardStep
        if (-not $script:Step4_Failed) {
            $script:CurrentStep = 5
            Show-WizardStep
        }
        return
    }

    $script:CurrentStep += 1
    Show-WizardStep
})

Show-WizardStep
[void]$form.ShowDialog()