wingetautoupdate/Winget-AutoUpdate/functions/Get-WingetOutdatedApps.ps1

#Function to get the outdated app list, in formatted array

function Get-WingetOutdatedApps {
    class Software {
        [string]$Name
        [string]$Id
        [string]$Version
        [string]$AvailableVersion
    }

    #Get list of available upgrades on winget format
    $upgradeResult = & $Winget upgrade --source winget | Out-String

    #Start Convertion of winget format to an array. Check if "-----" exists (Winget Error Handling)
    if (!($upgradeResult -match "-----")) {
        return "An unusual thing happened (maybe all apps are upgraded):`n$upgradeResult"
    }

    #Split winget output to lines
    $lines = $upgradeResult.Split([Environment]::NewLine) | Where-Object { $_ }

    # Find the line that starts with "------"
    $fl = 0
    while (-not $lines[$fl].StartsWith("-----")) {
        $fl++
    }

    #Get header line
    $fl = $fl - 1

    #Get header titles [without remove seperator]
    $index = $lines[$fl] -split '(?<=\s)(?!\s)'

    # Line $fl has the header, we can find char where we find ID and Version [and manage non latin characters]
    $idStart = [System.Text.Encoding]::UTF8.GetByteCount($($index[0] -replace '[\u4e00-\u9fa5]', '**'))
    $versionStart = $idStart + [System.Text.Encoding]::UTF8.GetByteCount($($index[1] -replace '[\u4e00-\u9fa5]', '**'))
    $availableStart = $versionStart + [System.Text.Encoding]::UTF8.GetByteCount($($index[2] -replace '[\u4e00-\u9fa5]', '**'))

    # Now cycle in real package and split accordingly
    $upgradeList = @()
    For ($i = $fl + 2; $i -lt $lines.Length; $i++) {
        $line = $lines[$i]
        if ($line.StartsWith("-----")) {
            #Get header line
            $fl = $i - 1

            #Get header titles [without remove seperator]
            $index = $lines[$fl] -split '(?<=\s)(?!\s)'

            # Line $fl has the header, we can find char where we find ID and Version [and manage non latin characters]
            $idStart = [System.Text.Encoding]::UTF8.GetByteCount($($index[0] -replace '[\u4e00-\u9fa5]', '**'))
            $versionStart = $idStart + [System.Text.Encoding]::UTF8.GetByteCount($($index[1] -replace '[\u4e00-\u9fa5]', '**'))
            $availableStart = $versionStart + [System.Text.Encoding]::UTF8.GetByteCount($($index[2] -replace '[\u4e00-\u9fa5]', '**'))
        }
        #(Alphanumeric | Literal . | Alphanumeric) - the only unique thing in common for lines with applications
        if ($line -match "\w\.\w") {
            $software = [Software]::new()
            #Manage non latin characters
            $nameDeclination = $([System.Text.Encoding]::UTF8.GetByteCount($($line.Substring(0, $idStart) -replace '[\u4e00-\u9fa5]', '**')) - $line.Substring(0, $idStart).Length)
            $software.Name = $line.Substring(0, $idStart - $nameDeclination).TrimEnd()
            $software.Id = $line.Substring($idStart - $nameDeclination, $versionStart - $idStart).TrimEnd()
            $software.Version = $line.Substring($versionStart - $nameDeclination, $availableStart - $versionStart).TrimEnd()
            $software.AvailableVersion = $line.Substring($availableStart - $nameDeclination).TrimEnd()
            #add formated soft to list
            $upgradeList += $software
        }
    }

    #If current user is not system, remove system apps from list
    if ($IsSystem -eq $false) {
        $SystemApps = Get-Content -Path "$WorkingDir\winget_system_apps.txt"
        $upgradeList = $upgradeList | Where-Object { $SystemApps -notcontains $_.Id }
    }

    return $upgradeList | Sort-Object { Get-Random }
}