Add Resolve-PSModuleDependency function to handle module dependencies

Author: MariusStorhaug

scripts/helpers/Resolve-PSModuleDependency.ps1

@@ -0,0 +1,64 @@
+#Requires -Modules @{ ModuleName = 'Retry'; ModuleVersion = '0.1.3' }
+
+function Resolve-PSModuleDependency {
+    <#
+        .SYNOPSIS
+        Resolve dependencies for a module based on the manifest file.
+
+        .DESCRIPTION
+        Resolve dependencies for a module based on the manifest file, following PSModuleInfo structure
+
+        .EXAMPLE
+        Resolve-PSModuleDependency -Path 'C:\MyModule\MyModule.psd1'
+
+        Installs all modules defined in the manifest file, following PSModuleInfo structure.
+
+        .NOTES
+        Should later be adapted to support both pre-reqs, and dependencies.
+        Should later be adapted to take 4 parameters sets: specific version ("requiredVersion" | "GUID"), latest version ModuleVersion,
+        and latest version within a range MinimumVersion - MaximumVersion.
+    #>
+    [Alias('Resolve-PSModuleDependencies')]
+    [CmdletBinding()]
+    param(
+        # The path to the manifest file.
+        [Parameter(Mandatory)]
+        [string] $ManifestFilePath
+    )
+
+    Write-Host 'Resolving dependencies'
+
+    $manifest = Import-PowerShellDataFile -Path $ManifestFilePath
+    Write-Host "Reading [$ManifestFilePath]"
+    Write-Host "Found [$($manifest.RequiredModules.Count)] modules to install"
+
+    foreach ($requiredModule in $manifest.RequiredModules) {
+        $installParams = @{}
+
+        if ($requiredModule -is [string]) {
+            $installParams.Name = $requiredModule
+        } else {
+            $installParams.Name = $requiredModule.ModuleName
+            $installParams.MinimumVersion = $requiredModule.ModuleVersion
+            $installParams.RequiredVersion = $requiredModule.RequiredVersion
+            $installParams.MaximumVersion = $requiredModule.MaximumVersion
+        }
+        $installParams.Force = $true
+        $installParams.Verbose = $false
+
+        Write-Host "[$($installParams.Name)] - Installing module"
+        $VerbosePreferenceOriginal = $VerbosePreference
+        $VerbosePreference = 'SilentlyContinue'
+        Retry -Count 5 -Delay 10 {
+            Install-Module @installParams -AllowPrerelease:$false
+        }
+        $VerbosePreference = $VerbosePreferenceOriginal
+        Write-Host "[$($installParams.Name)] - Importing module"
+        $VerbosePreferenceOriginal = $VerbosePreference
+        $VerbosePreference = 'SilentlyContinue'
+        Import-Module @installParams
+        $VerbosePreference = $VerbosePreferenceOriginal
+        Write-Host "[$($installParams.Name)] - Done"
+    }
+    Write-Host 'Resolving dependencies - Done'
+}