create_shortcuts_for_all_firefox_profiles.ps1

#Requires -Version 5.0

# If you, for some odd reason, have a lot of different Firefox profiles (like I do),
# this script will create a shortcut for each one of them so you can use them easily

# Keep in mind that this script was made by a guy who didn't knew absolutely nothing about PowerShell

#----------------------------------------------------------------#
# This script will only work if you have Windows 7 SP1 or newer. #
#                                                                #
# If you have W7 SP1 but your PowerShell version is older than   #
# 5.0, you need to update it:                                    #
#                                                                #
# https://www.microsoft.com/en-us/download/details.aspx?id=50395 #
#----------------------------------------------------------------#

# Where do you want your shortcuts to be saved?
# $OUTPUT_DIR = "$HOME\Documents\Firefox"

function Get-Firefox-Exe {
    # Possible registry keys to find the Firefox executable.
    $fx_paths = @("HKLM:\SOFTWARE\Mozilla\Mozilla Firefox","HKLM:\SOFTWARE\Wow6432Node\Mozilla\Mozilla Firefox")

    ForEach($fx_path in $fx_paths) {
        $fx_key = Get-ChildItem -Path $fx_path -ErrorAction SilentlyContinue

        if(!$fx_key) {
            Continue
        }
        $fx_count = (Get-Item -Path $fx_path).SubKeyCount
        $fx_exe = $Null
        $ret = $Null

        ForEach($key in $fx_key) {
            $fx_exe = Get-ItemPropertyValue -Path "$($fx_path)\$($key.PSChildName)\Main" -Name PathToExe -ErrorAction SilentlyContinue

            if($fx_exe) {
                $ret = Test-Path $fx_exe

                if($ret) {
                    Break
                }
            }
        }
        if($ret) {
            Break
        }
    }
    return $fx_exe
}

# Thanks to:
# https://stackoverflow.com/a/9701907
#
# $out_dir - Output directory
# $fx_exe  - Firefox executable
# $profile - Profile name
function Create-Firefox-Shortcut($out_dir, $fx_exe, $profile) {
    $wsh_shell = New-Object -comObject WScript.Shell
    $shortcut = $wsh_shell.CreateShortcut("$($out_dir)\$($profile).lnk")
    $shortcut.TargetPath = $fx_exe
    $shortcut.Arguments = "-no-remote -P `"$($profile)`""
    $shortcut.Save()
}

$fx_exe = Get-Firefox-Exe

if($fx_exe) {
    $counter = 0

    # Thanks to:
    # http://www.powershellmagazine.com/2013/06/28/pstip-using-the-system-windows-forms-folderbrowserdialog-class/
    Add-Type -AssemblyName System.Windows.Forms
    $browser = New-Object System.Windows.Forms.FolderBrowserDialog -Property @{
        Description = "Where do you want to save your Firefox shortcuts?"
        ShowNewFolderButton = $false
    }
    [void]$browser.ShowDialog()
    if(!$browser.SelectedPath) {
        Exit 1
    }
    # New-Item $OUTPUT_DIR -Type Directory -ErrorAction SilentlyContinue | Out-Null
    
    Get-ChildItem -Path "$Env:APPDATA\Mozilla\Firefox\Profiles" -Directory |
    ForEach-Object {
        # https://support.mozilla.org/t5/tkb/articleprintpage/tkb-id/install-and-update-kb/article-id/132#w_restoring-a-profile-backup
        # We have to skip the first 8 random characters, plus a dot
        $profile_name = $_.Name.Substring(9)

        Create-Firefox-Shortcut $browser.SelectedPath $fx_exe $profile_name
        
        $counter++
    }
    if($counter -eq 0) {
        Write-Error "No Firefox profiles were found."
        Exit 1
    }
    else {
        Write-Output "$counter shortcuts were created."
    }
}
else {
    Write-Error "Unable to find Firefox's executable."
    Exit 1
}