function Add-Version {
    [CmdletBinding()]param (
        [System.Version]$current,
        [System.Version]$increment
    )
    if ($current) {
        [System.Version]::new(
            $current.Major + $increment.Major,
            $current.Minor + $increment.Minor,
            $current.Build + $increment.Build,
            $current.Revision + $increment.Revision
            )
    } else {
        [System.Version]::new('1.0.0.0')
    }

}

function Set-Json {
    [CmdletBinding(SupportsShouldProcess=$true)]param (
        $json,
        $jsonpath,
        $value
    )
    if ($PScmdlet.ShouldProcess($jsonpath)) {
    #TODO: update json with value
    }
}

function Copy-Module {
    [CmdletBinding(SupportsShouldProcess=$true)]param (
        $ComputerName,
        $ModuleName,
        $OutputDirectory,
        $BinarySourceDirectory,
        [switch]$Force
    )
    if (![string]::IsNullOrEmpty($ModuleName)) {
        if (![string]::IsNullOrEmpty($OutputDirectory)) {
            $targetDir = "$OutputDirectory\$ModuleName"
        } else {
            $targetDir = "\\$ComputerName\c$\Program Files\WindowsPowerShell\Modules\$ModuleName"
        }
        if ($PScmdlet.ShouldProcess($targetDir)) {
            remove-item $targetDir -Force:$Force -Recurse -ErrorAction SilentlyContinue
            mkdir $targetDir -Force:$Force -ErrorAction SilentlyContinue
            copy-item -Path "$moduleName.psm1" $targetDir -Force:$Force
            copy-item -Path "$moduleName.psd1" $targetDir -Force:$Force
            if ($BinarySourceDirectory) {
                copy-item ".\$BinarySourceDirectory" -Exclude 'System.*','Microsoft.*' -Destination $targetDir -Recurse -Force:$Force
            }
        }
    }
}

function Install-Prequisites {
    [CmdletBinding(SupportsShouldProcess=$true)]param (
    )
    $Args | % {
        invoke-expression $_
    }
}

function Publish-Module2 {
    [CmdletBinding(SupportsShouldProcess=$true)]param (
        $ModuleName,
        $BuildTargets,
        $BinarySourceDirectory,
        $OutputDirectory,
        [System.Version]$VersionIncrement = '0.0.0.1'
    )
    Install-Prequisites
    if ($VersionIncrement) {
        $currentVersion = Select-Json 'build.json' 'New-ModuleManifest.ModuleVersion'
        $currentVersion = Add-Version $currentVersion $VersionIncrement
        Set-Json 'build.json' 'New-ModuleManifest.ModuleVersion' $currentVersion
    }
    New-ModuleManifest
    $BuildTargets | % {
        Copy-Module -ModuleName $ModuleName -ComputerName $_ -BinarySourceDirectory $BinarySourceDirectory -Force
    }
    if (![string]::IsNullOrEmpty($OutputDirectory)) {
        Copy-Module -ModuleName $ModuleName -OutputDirectory $OutputDirectory -BinarySourceDirectory $BinarySourceDirectory -Force
    }
}

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