feat: requirements (#279)

# Pull Request

## Description

Update the requirements and make it mandatory

This PR also includes some clean up and simplification of redundant
code.

Flagging as a minor version, but there are no known breaking changes.

Example with failure:
<img width="965" alt="image"
src="https://github.com/user-attachments/assets/9f0b1581-ad6d-4af9-ad51-2c30ec175c39"
/>

Example without failure:
<img width="880" alt="image"
src="https://github.com/user-attachments/assets/c5c87a15-45b7-4895-93df-9f00498c8a44"
/>


## License

By submitting this pull request, I confirm that my contribution is made
under the terms of the projects associated license.

Author: jaredfholgate

README.md

@@ -10,49 +10,30 @@
 
 ## Introduction
 
-TLDR: Head straight over to our [Quick Start](https://github.com/Azure/ALZ-PowerShell-Module/wiki/%5BUser-Guide%5D-Quick-Start) to get going now.
-
 This repository contains the PowerShell module and documentation for the Azure landing zones Accelerators for Bicep and Terraform. The accelerators are an opinionated implementation of the Azure Landing Zones Terraform modules, with Azure DevOps or GitHub bootstrapping.
 
 It is designed to be used as a template to enable you to get started quickly deploying ALZ with Bicep or Terraform.
 
-Please refer to our [Wiki](https://github.com/Azure/ALZ-PowerShell-Module/wiki) for detailed features and usage instructions.
+Please refer to our [Docs](https://aka.ms/alz/acc) for detailed features and usage instructions.
 
 ## Quick Start
 
 To get going right now, run these PowerShell steps:
 
 ```pwsh
 Install-Module -Name ALZ
-Deploy-Accelerator
-```
-
-## More Examples
-
-Here are more examples with different options:
-
-### Azure Landing Zone Environment with Bicep and GitHub Actions Workflows
-
-```powershell
-Deploy-Accelerator -o <output_directory> -i "bicep" -b "alz_github"
+Deploy-Accelerator -inputs "inputs.yaml"
 ```
 
-### Azure Landing Zone Environment with Bicep and Azure DevOps Pipelines
+## Software Requirements
 
-```powershell
-Deploy-Accelerator -o <output_directory> -i "bicep" -b "alz_azuredevops"
-```
-
-### Azure Landing Zone Environment with Terraform and GitHub Pipelines
-
-```powershell
-Deploy-Accelerator -o <output_directory> -i "terraform" -b "alz_github"
-```
+You can see the software requirements for the ALZ Accelerators in the [Phase 1 Docs](https://aka.ms/alz/acc/phase1).
 
-### Azure Landing Zone Environment with Terraform and Azure DevOps Pipelines
+To check the requirements, run these commands:
 
-```powershell
-Deploy-Accelerator -o <output_directory> -i "terraform" -b "alz_azuredevops"
+```pwsh
+Install-Module -Name ALZ
+Test-AcceleratorRequirements
 ```
 
 ## Contributing

src/ALZ/ALZ.psd1

@@ -72,9 +72,8 @@
 
     # Functions to export from this module, for best performance, do not use wildcards and do not delete the entry, use an empty array if there are no functions to export.
     FunctionsToExport = @(
-        'New-ALZEnvironment'
-        'Test-ALZRequirement'
-        'Edit-LineEnding'
+        'Test-AcceleratorRequirement',
+        'Deploy-Accelerator'
     )
 
     # Cmdlets to export from this module, for best performance, do not use wildcards and do not delete the entry, use an empty array if there are no cmdlets to export.
@@ -84,10 +83,7 @@
     VariablesToExport = '*'
 
     # Aliases to export from this module, for best performance, do not use wildcards and do not delete the entry, use an empty array if there are no aliases to export.
-    AliasesToExport   = @(
-        'Edit-LineEndings'
-        'Deploy-Accelerator'
-    )
+    AliasesToExport   = @()
 
     # DSC resources to export from this module
     # DscResourcesToExport = @()
@@ -142,7 +138,4 @@
 
     # Default prefix for commands exported from this module. Override the default prefix using Import-Module -Prefix.
     # DefaultCommandPrefix = ''
-
 }
-
-

src/ALZ/Private/Tools/Test-Tooling.ps1

@@ -0,0 +1,111 @@
+function Test-Tooling {
+    $checkResults = @()
+    $hasFailure = $false
+
+    # Check if PowerShell is the correct version
+    Write-Verbose "Checking PowerShell version"
+    $powerShellVersionTable = $PSVersionTable
+    $powerShellVersion = $powerShellVersionTable.PSVersion.ToString()
+    if ($powerShellVersionTable.PSVersion.Major -lt 7) {
+        $checkResults += @{
+            message = "PowerShell version $powerShellVersion is not supported. Please upgrade to PowerShell 7.4 or higher. Either switch to the `pwsh` prompt or follow the instructions here: https://aka.ms/install-powershell"
+            result  = "Failure"
+        }
+        $hasFailure = $true
+    } elseif ($powerShellVersionTable.PSVersion.Major -eq 7 -and $powerShellVersionTable.PSVersion.Minor -lt 4) {
+        $checkResults += @{
+            message = "PowerShell version $powerShellVersion is not supported. Please upgrade to PowerShell 7.4 or higher. Either switch to the `pwsh` prompt or follow the instructions here: https://aka.ms/install-powershell"
+            result  = "Failure"
+        }
+        $hasFailure = $true
+    } else {
+        $checkResults += @{
+            message = "PowerShell version $powerShellVersion is supported."
+            result  = "Success"
+        }
+    }
+
+    # Check if Git is installed
+    Write-Verbose "Checking Git installation"
+    $gitPath = Get-Command git -ErrorAction SilentlyContinue
+    if ($gitPath) {
+        $checkResults += @{
+            message = "Git is installed."
+            result  = "Success"
+        }
+    } else {
+        $checkResults += @{
+            message = "Git is not installed. Follow the instructions here: https://git-scm.com/downloads"
+            result  = "Failure"
+        }
+        $hasFailure = $true
+    }
+
+    # Check if Azure CLI is installed
+    Write-Verbose "Checking Azure CLI installation"
+    $azCliPath = Get-Command az -ErrorAction SilentlyContinue
+    if ($azCliPath) {
+        $checkResults += @{
+            message = "Azure CLI is installed."
+            result  = "Success"
+        }
+    } else {
+        $checkResults += @{
+            message = "Azure CLI is not installed. Follow the instructions here: https://learn.microsoft.com/en-us/cli/azure/install-azure-cli"
+            result  = "Failure"
+        }
+        $hasFailure = $true
+    }
+
+    # Check if Azure CLI is logged in
+    Write-Verbose "Checking Azure CLI login status"
+    $azCliAccount = $(az account show -o json) | ConvertFrom-Json
+    if ($azCliAccount) {
+        $checkResults += @{
+            message = "Azure CLI is logged in. Tenant ID: $($azCliAccount.tenantId), Subscription: $($azCliAccount.name) ($($azCliAccount.id))"
+            result  = "Success"
+        }
+    } else {
+        $checkResults += @{
+            message = "Azure CLI is not logged in. Please login to Azure CLI using 'az login -t `"00000000-0000-0000-0000-000000000000}`"', replacing the empty GUID with your tenant ID."
+            result  = "Failure"
+        }
+        $hasFailure = $true
+    }
+
+    # Check if latest ALZ module is installed
+    Write-Verbose "Checking ALZ module version"
+    $alzModuleCurrentVersion = Get-InstalledModule -Name ALZ
+    $alzModuleLatestVersion = Find-Module -Name ALZ
+    if ($alzModuleCurrentVersion.Version -lt $alzModuleLatestVersion.Version) {
+        $checkResults += @{
+            message = "ALZ module is not the latest version. Your version: $($alzModuleCurrentVersion.Version), Latest version: $($alzModuleLatestVersion.Version). Please update to the latest version using 'Update-Module ALZ'."
+            result  = "Failure"
+        }
+        $hasFailure = $true
+    } else {
+        $checkResults += @{
+            message = "ALZ module is the latest version ($($alzModuleCurrentVersion.Version))."
+            result  = "Success"
+        }
+    }
+
+    Write-Verbose "Showing check results"
+    $checkResults | ForEach-Object {[PSCustomObject]$_} | Format-Table -Property @{
+        Label = "Check Result"; Expression = {
+            switch ($_.result) {
+                'Success' { $color = "92"; break }
+                'Failure' { $color = "91"; break }
+                default { $color = "0" }
+            }
+            $e = [char]27
+            "$e[${color}m$($_.result)${e}[0m"
+        }
+    }, @{ Label = "Check Details"; Expression = {$_.message} }  -AutoSize -Wrap
+
+    if($hasFailure) {
+        Write-InformationColored "Accelerator software requirements have no been met, please review and install the missing software." -ForegroundColor Red -InformationAction Continue
+        Write-InformationColored "Cannot continue with Deployment..." -ForegroundColor Red -InformationAction Continue
+        throw "Accelerator software requirements have no been met, please review and install the missing software."
+    }
+}

src/ALZ/Public/New-ALZEnvironment.ps1 renamed to src/ALZ/Public/Deploy-Accelerator.ps1

@@ -1,4 +1,4 @@
-function New-ALZEnvironment {
+function Deploy-Accelerator {
     <#
     .SYNOPSIS
     Deploys an accelerator according to the supplied inputs.
@@ -169,11 +169,26 @@ function New-ALZEnvironment {
         )]
         [Alias("tj")]
         [Alias("convertTfvarsToJson")]
-        [switch] $convert_tfvars_to_json
+        [switch] $convert_tfvars_to_json,
+
+        [Parameter(
+            Mandatory = $false,
+            HelpMessage = "[OPTIONAL] Determines whether to skip the requirements check. This is not recommended."
+        )]
+        [Alias("sr")]
+        [Alias("skipRequirementsCheck")]
+        [switch] $skip_requirements_check
     )
 
     $ProgressPreference = "SilentlyContinue"
 
+    if(-not $skip_requirements_check) {
+        Write-InformationColored "Checking the software requirements for the Accelerator..." -ForegroundColor Green -InformationAction Continue
+        Test-Tooling
+    } else {
+        Write-InformationColored "Skipping the software requirements check..." -ForegroundColor Yellow -InformationAction Continue
+    }
+
     Write-InformationColored "Getting ready to deploy the accelerator with you..." -ForegroundColor Green -InformationAction Continue
 
     if ($PSCmdlet.ShouldProcess("Accelerator setup", "modify")) {
@@ -366,5 +381,3 @@ function New-ALZEnvironment {
 
     return
 }
-
-New-Alias -Name "Deploy-Accelerator" -Value "New-ALZEnvironment"