WIP: first build.ps1

Author: TylerLeonhardt

build.ps1

@@ -0,0 +1,96 @@
+#!/usr/bin/env pwsh
+param(
+    [Parameter()]
+    [switch]
+    $Clean,
+
+    [Parameter()]
+    [switch]
+    $BootstrapBuildEnv
+)
+
+$NeededTools = @{
+    OpenSsl = "openssl for macOS"
+    DotNet451TargetingPack = ".NET 4.5.1 Targeting Pack"
+    PowerShellGet = "PowerShellGet latest"
+    InvokeBuild = "InvokeBuild latest"
+}
+
+if ((-not $PSVersionTable["OS"]) -or $PSVersionTable["OS"].Contains("Windows")) {
+    $OS = "Windows"
+} elseif ($PSVersionTable["OS"].Contains("Darwin")) {
+    $OS = "macOS"
+} else {
+    $OS = "Linux"
+}
+
+
+function needsOpenSsl () {
+    if ($OS -eq "macOS") {
+        try {
+            $opensslVersion = (openssl version)
+        } catch {
+            return $true
+        }
+    }
+    return $false
+}
+
+function needsDotNet451TargetingPack () {
+    # how could we check for this?
+    return $false
+}
+
+function needsPowerShellGet () {
+    if (Get-Module -ListAvailable -Name PowerShellGet) {
+        return $false
+    }
+    return $true
+}
+
+function needsInvokeBuild () {
+    if (Get-Module -ListAvailable -Name InvokeBuild) {
+        return $false
+    }
+    return $true
+}
+
+function getMissingTools () {
+    $missingTools = @()
+
+    if (needsOpenSsl) {
+        $missingTools += $NeededTools.OpenSsl
+    }
+    if (needsDotNet451TargetingPack) {
+        $missingTools += $NeededTools.DotNet451TargetingPack
+    }
+    if (needsPowerShellGet) {
+        $missingTools += $NeededTools.PowerShellGet
+    }
+    if (needsInvokeBuild) {
+        $missingTools += $NeededTools.InvokeBuild
+    }
+
+    return $missingTools
+}
+
+function hasMissingTools () {
+    return ((getMissingTools).Count -gt 0)
+}
+
+if ($BootstrapBuildEnv) {
+    $string = "Here is what your environment is missing:`n"
+    $missingTools = getMissingTools
+    if (($missingTools).Count -eq 0) {
+        $string += "* nothing!`n`n Run this script without a flag to build or a -Clean to clean."
+    } else {
+        $missingTools | ForEach-Object {$string += "* $_`n"}
+        $string += "`nAll instructions for installing these tools can be found on PowerShell Editor Services' Github:`n" `
+            + "https://github.com/powershell/PowerShellEditorServices#development"
+    }
+    Write-Host "`n$string`n"
+} elseif ($Clean) {
+    Invoke-Build Clean
+} else {
+    Invoke-Build Build
+}