PowerShell profile used cross-platform (Linux, macOS, Windows)

profile.ps1

#Requires -Version 7

# Version 1.3.7

# Cross-platform PowerShell profile based on https://devblogs.microsoft.com/powershell/optimizing-your-profile/

# check if newer version
$gistUrl = 'https://api.github.com/gists/a4e366e6b01f0b70eae90557dfc9d21d'
$latestVersionFile = [System.IO.Path]::Combine("$HOME", '.latest_profile_version')
$versionRegEx = '# Version (?<version>\d+\.\d+\.\d+)'

if ([System.IO.File]::Exists($latestVersionFile)) {
    $latestVersion = [System.IO.File]::ReadAllText($latestVersionFile)
    $currentProfile = [System.IO.File]::ReadAllText($profile.CurrentUserAllHosts)
    [version]$currentVersion = '0.0.0'
    if ($currentProfile -match $versionRegEx) {
        $currentVersion = $matches.Version
    }

    if ([version]$latestVersion -gt $currentVersion) {
        Write-Verbose "Your version: $currentVersion" -Verbose
        Write-Verbose "New version: $latestVersion" -Verbose
        $choice = Read-Host -Prompt 'Found newer profile, install? (Y)'
        if ($choice -eq 'Y' -or $choice -eq '') {
            try {
                $gist = Invoke-RestMethod $gistUrl -ErrorAction Stop
                $gistProfile = $gist.Files.'profile.ps1'.Content
                Set-Content -Path $profile.CurrentUserAllHosts -Value $gistProfile
                Write-Verbose 'Installed newer version of profile' -Verbose
                . $profile
                return
            } catch {
                # we can hit rate limit issue with GitHub since we're using anonymous
                Write-Verbose -Verbose 'Was not able to access gist, try again next time'
            }
        }
    }
}

$global:profile_initialized = $false


# Useful before doing demos, where default settings might be preferred
function Reset-Console {

    function global:prompt { "PS $($executionContext.SessionState.Path.CurrentLocation)$('>' * ($nestedPromptLevel + 1)) " }

    Set-Location ~

}

function prompt {

    function Initialize-Profile {

        $null = Start-ThreadJob -Name "Get version of `$profile from gist" -ArgumentList $gistUrl, $latestVersionFile, $versionRegEx -ScriptBlock {
            param ($gistUrl, $latestVersionFile, $versionRegEx)

            try {
                $gist = Invoke-RestMethod $gistUrl -ErrorAction Stop

                $gistProfile = $gist.Files.'profile.ps1'.Content
                [version]$gistVersion = '0.0.0'
                if ($gistProfile -match $versionRegEx) {
                    $gistVersion = $matches.Version
                    Set-Content -Path $latestVersionFile -Value $gistVersion
                }
            } catch {
                # we can hit rate limit issue with GitHub since we're using anonymous
                Write-Verbose -Verbose 'Was not able to access gist to check for newer version'
            }
        }

        if ((Get-Module PSReadLine).Version -lt 2.2) {
            throw 'Profile requires PSReadLine 2.2+'
        }

        #Enable concise errorview for PS7 and later
        if ($PSVersionTable.PSVersion.Major -ge 7) {
            $ErrorView = 'ConciseView'
        }

        # setup psdrives

        if (!(Test-Path repos:)) {
            if (Test-Path ([System.IO.Path]::Combine("$HOME", 'repos'))) {
                New-PSDrive -Root ~/repos -Name repos -PSProvider FileSystem -Scope Global > $Null
                Set-Location repos:
            }
        }

        Set-PSReadLineOption -Colors @{ Selection = "`e[92;7m"; InLinePrediction = "`e[36;7;238m" } -PredictionSource History
        Set-PSReadLineKeyHandler -Key Tab -Function MenuComplete
        Set-PSReadLineKeyHandler -Chord Ctrl+b -Function BackwardWord
        Set-PSReadLineKeyHandler -Chord Ctrl+f -Function ForwardWord
        Set-PSReadLineOption -MaximumHistoryCount 32767

        if ($env:TERM_PROGRAM -eq "vscode") {
            # Use inline prediction view in VSCode to avoid: WARNING: The prediction 'ListView' is temporarily disabled because the current window size of the console is too small. To use the 'ListView', please make sure the 'WindowWidth' is not less than '54' and the 'WindowHeight' is not less than '15'.
            Set-PSReadLineOption -PredictionViewStyle InlineView
        } else {
            Set-PSReadLineOption -PredictionViewStyle ListView
        }

        if ($IsWindows) {
            Set-PSReadLineOption -EditMode Emacs -ShowToolTips
            Set-PSReadLineKeyHandler -Chord Ctrl+Shift+c -Function Copy
            Set-PSReadLineKeyHandler -Chord Ctrl+Shift+v -Function Paste
        } else {
            try {
                Import-UnixCompleters
            } catch [System.Management.Automation.CommandNotFoundException] {
                Install-Module Microsoft.PowerShell.UnixCompleters -Repository PSGallery -AcceptLicense -Force
                Import-UnixCompleters
            }
        }

        if (Get-Command -Name oh-my-posh -ErrorAction Ignore) {

            if ($IsMacOS) {
                oh-my-posh init pwsh --config "$(brew --prefix oh-my-posh)/themes/night-owl.omp.json" | Invoke-Expression
            } else {
                oh-my-posh init pwsh --config "$env:POSH_THEMES_PATH\night-owl.omp.json" | Invoke-Expression
            }

        }

    }


    if ($global:profile_initialized -ne $true) {
        $global:profile_initialized = $true
        Initialize-Profile
        if (Get-PSDrive -Name repos -ErrorAction Ignore) {
            Set-Location repos:
        }
    }

    $currentLastExitCode = $LASTEXITCODE
    $lastSuccess = $?

    # set window title
    try {
        $prefix = ''
        if ($isWindows) {
            $identity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
            $windowsPrincipal = [Security.Principal.WindowsPrincipal]::new($identity)
            if ($windowsPrincipal.IsInRole('Administrators') -eq 1) {
                $prefix = 'Admin:'
            }
        }

        $Host.ui.RawUI.WindowTitle = "$prefix$PWD"
    } catch {
        # do nothing if can't be set
    }

    $global:LASTEXITCODE = $currentLastExitCode
}