$configFilePath = Join-Path -Path $PSScriptRoot -ChildPath "config.json"

# Check if the configuration file exists
if (-Not (Test-Path $configFilePath)) {
    Write-Error "Configuration file not found at $configFilePath"
    exit 1
}

# Load the configuration file
$config = Get-Content $configFilePath | ConvertFrom-Json

# Variables for script paths
$backupScriptPath = $config.BackupScriptPath
$compareScriptPath = $config.CompareScriptPath
$outputPath = $config.OutputPath

# Import necessary assemblies for GUI
Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$processing = $false

# Create Form
$form = New-Object System.Windows.Forms.Form
$form.Text = "NWA Sentinel"
$form.Size = New-Object System.Drawing.Size(800, 700)
$form.StartPosition = "CenterScreen"

# Create Backup Button
$backupButton = New-Object System.Windows.Forms.Button
$backupButton.Text = "Backup"
$backupButton.Size = New-Object System.Drawing.Size(100, 30)
$backupButton.Location = New-Object System.Drawing.Point(10, 10)
$form.Controls.Add($backupButton)

# Create Company List Box
$companyList = New-Object System.Windows.Forms.ListBox
$companyList.Size = New-Object System.Drawing.Size(200, 300)
$companyList.Location = New-Object System.Drawing.Point(10, 50)
$form.Controls.Add($companyList)

# Create File Details List Box
$fileDetailsListBox = New-Object System.Windows.Forms.ListBox
$fileDetailsListBox.Size = New-Object System.Drawing.Size(550, 300)
$fileDetailsListBox.Location = New-Object System.Drawing.Point(220, 50)
$form.Controls.Add($fileDetailsListBox)

# Create Compare Button
$compareButton = New-Object System.Windows.Forms.Button
$compareButton.Text = "Compare"
$compareButton.Size = New-Object System.Drawing.Size(100, 30)
$compareButton.Location = New-Object System.Drawing.Point(10, 360)
$compareButton.Enabled = $false
$form.Controls.Add($compareButton)

# Create QXP Button
$qxpButton = New-Object System.Windows.Forms.Button
$qxpButton.Text = "QXP"
$qxpButton.Size = New-Object System.Drawing.Size(100, 30)
$qxpButton.Location = New-Object System.Drawing.Point(120, 360)
$qxpButton.Enabled = $false
$form.Controls.Add($qxpButton)

# Create Compare Output Text Box
$compareOutputBox = New-Object System.Windows.Forms.TextBox
$compareOutputBox.Multiline = $true
$compareOutputBox.ReadOnly = $true
$compareOutputBox.ScrollBars = "Vertical"
$compareOutputBox.Size = New-Object System.Drawing.Size(760, 200)
$compareOutputBox.Location = New-Object System.Drawing.Point(10, 400)
$form.Controls.Add($compareOutputBox)

# Load Company Names into ListBox from manifest.json
$manifestPath = "C:\Users\$env:USERNAME\Desktop\NWABackup\manifest.json"
$manifestData = $null
if (Test-Path $manifestPath) {
    try {
        $manifestData = Get-Content -Path $manifestPath | ConvertFrom-Json
        $companyNames = $manifestData.PSObject.Properties.Name
        $companyList.Items.AddRange($companyNames)
    } catch {
        [System.Windows.Forms.MessageBox]::Show("Failed to parse manifest.json: $_", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
    }
} else {
    [System.Windows.Forms.MessageBox]::Show("Manifest file not found at $manifestPath", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
}

# Event: When a company is selected, populate file details
$companyList.Add_SelectedIndexChanged({
    $selectedCompany = $companyList.SelectedItem
    $compareOutputBox.Text = ""
    $qxpButton.Enabled = $false  # Disable the QXP button when the company changes

    if ($selectedCompany -and $manifestData) {
        $fileDetailsListBox.Items.Clear()
        try {
            # Retrieve the file groups for the selected company
            $fileGroups = $manifestData.$selectedCompany.PSObject.Properties

            foreach ($group in $fileGroups) {
                $fileData = $group.Value
                $datFiles = $fileData.DAT
                $qxpFiles = $fileData.QXP

                # Extract dates from zip file paths
                $dates = $datFiles | ForEach-Object {
                    if ($_ -match "\\(\d{8})_(\d{6})\.zip$") {
                        # Combine date and time into a single string
                        $dateTimeString = "$($matches[1])$($matches[2])"
                        [datetime]::ParseExact($dateTimeString, "yyyyMMddHHmmss", $null)
                    } else {
                        $null
                    }
                }

                # Get the latest date
                $latestDate = $dates | Where-Object { $_ } | Sort-Object -Descending | Select-Object -First 1

                # Display the file group and its latest date
                $latestDateText = if ($latestDate) {
                    $latestDate.ToString("yyyy-MM-dd HH:mm:ss")
                } else {
                    "No valid date found"
                }

                $groupName = [string]$group.Name
                $fileDetailsListBox.Items.Add("$latestDateText :: $groupName")
            }
        } catch {
            [System.Windows.Forms.MessageBox]::Show("Error processing files for company '$selectedCompany': $_", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
        }
    }
})

$fileDetailsListBox.Add_SelectedIndexChanged({
    $compareOutputBox.Text = ""  # Clear the output box
    $compareButton.Enabled = $true  # Enable the Compare button

    $selectedFileGroup = $fileDetailsListBox.SelectedItem
    $selectedCompany = $companyList.SelectedItem
    $qxpButton.Enabled = $false  # Disable the QXP button by default

    if ($selectedFileGroup -and $selectedCompany -and $manifestData) {
        try {
            # Extract the part name from the selected file group
            $partName = $selectedFileGroup -replace ".* :: ", ""

            # Check if the selected part has QXP files
            $qxpFiles = $manifestData.$selectedCompany.$partName.QXP

            if ($qxpFiles -and $qxpFiles.Count -gt 0) {
                $qxpButton.Enabled = $true
            }
        } catch {
            [System.Windows.Forms.MessageBox]::Show("Error checking QXP availability for '$selectedFileGroup': $_", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
        }
    }
})

# Backup Button Click Event
$backupButton.Add_Click({
    if (Test-Path $backupScriptPath) {
        Start-Process -FilePath "powershell.exe" -ArgumentList "-File `"$backupScriptPath`"" -NoNewWindow -Wait
        [System.Windows.Forms.MessageBox]::Show("Backup completed.", "Information", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Information)
    } else {
        [System.Windows.Forms.MessageBox]::Show("Backup script not found at $backupScriptPath", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
    }
})

# Compare Button Click Event
$compareButton.Add_Click({
    if ($processing) {
        [System.Windows.Forms.MessageBox]::Show("Please wait for the current operation to complete.", "Info", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Information)
        return
    }

    $selectedCompany = $companyList.SelectedItem
    $selectedFileGroup = $fileDetailsListBox.SelectedItem

    if (-not $selectedCompany) {
        [System.Windows.Forms.MessageBox]::Show("Please select a company from the list.", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
        return
    }

    if (-not $selectedFileGroup) {
        [System.Windows.Forms.MessageBox]::Show("Please select a file group from the list.", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
        return
    }

    try {
        $processing = $true
        $backupButton.Enabled = $false
        $compareButton.Enabled = $false

        $compareOutputBox.text = ""
        # Extract the file name (ignore the date and time)
        $fileName = $selectedFileGroup -replace ".* :: ", ""

        # Construct the PowerShell command
        $command = "$compareScriptPath -CompanyName '$selectedCompany' -FileName '$fileName.DAT'"

        # Run the compare script and redirect output
        $processInfo = New-Object System.Diagnostics.ProcessStartInfo
        $processInfo.FileName = "powershell.exe"
        $processInfo.Arguments = "-NoProfile -Command `"$command`""
        $processInfo.RedirectStandardOutput = $true
        $processInfo.RedirectStandardError = $true
        $processInfo.UseShellExecute = $false
        $processInfo.CreateNoWindow = $true

        $process = New-Object System.Diagnostics.Process
        $process.StartInfo = $processInfo
        $process.Start() | Out-Null

        # Read both standard output and error output
        $output = $process.StandardOutput.ReadToEnd()
        $errorOutput = $process.StandardError.ReadToEnd()
        $process.WaitForExit()

        # Display the output or errors in the Compare Output TextBox
        if ($output) {
            $compareOutputBox.Text = $output -join "`r`n"
        } elseif ($errorOutput) {
            $compareOutputBox.Text = "Error: $errorOutput"
        } else {
            $compareOutputBox.Text = "No output received from the compare script."
        }

    } catch {
        [System.Windows.Forms.MessageBox]::Show("Error running compare script: $($_.Exception.Message)", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
    } finally {
        $processing = $false
        $backupButton.Enabled = $true
    }
})

# Event: QXP Button Click
$qxpButton.Add_Click({
    $selectedCompany = $companyList.SelectedItem
    if (-not $selectedCompany) {
        [System.Windows.Forms.MessageBox]::Show("Please select a company from the list.", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
        return
    }

    $selectedFileGroup = $fileDetailsListBox.SelectedItem
    if (-not $selectedFileGroup) {
        [System.Windows.Forms.MessageBox]::Show("Please select a file group from the list.", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
        return
    }

    $fileName = $selectedFileGroup -replace ".* - ", ""
    [System.Windows.Forms.MessageBox]::Show("Opening QXP file for ${selectedCompany}: $fileName", "QXP File", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Information)

    # Implement the actual logic for opening the QXP file if needed
})

# Show Form
$form.ShowDialog()