Function Invoke-Choco {
    param(
        [ValidateSet('install','upgrade','uninstall','list','sources')]
        [string]$verb,
        [ValueFromRemainingArguments]
        $varargs
    )

    $modifiedVarArgs = @()

    foreach ($varArg in $varargs) {
        if ($varArg.StartsWith('--')) {
            # skip the first hyphen
            $varArg = $varArg.Substring(1)
        }
        $modifiedVarArgs += $varArg
    }

    switch ($verb) {
        'install'
        'upgrade' {
            Invoke-ChocoUpgradeCommand @modifiedVarArgs
        }
    }
}

Function Invoke-ChocoUpgradeCommand {
    param (
        [switch]$skipDependencies,
        [switch]$skipScripts,
        [string]$Version
        [ValueFromRemainingArguments]
        $packageIds
    )

    # List of operations
    # Verify package exists on feed (at version or get latest)
    # Move an existing package from /lib to /lib-bkp
    # Download a package to /lib-tmp
    # Extract package to /lib
    # on failure, move /lib-tmp to /lib-bad
    # on failure, move /lib-bkp to /lib

    # ADD: ping home that package got installed
    # BONUS: I don't have to fucking be goddamn singlethreaded for logging
}

Set-Alias -Name choco -Value Invoke-Choco