public/Workspace/Get-FabricWorkspace.ps1

<#
.SYNOPSIS
Retrieves details of a Microsoft Fabric workspace by its ID or name.
 
.DESCRIPTION
The `Get-FabricWorkspace` function fetches workspace details from the Fabric API. It supports filtering by WorkspaceId or WorkspaceName.
 
.PARAMETER WorkspaceId
The unique identifier of the workspace to retrieve.
 
.PARAMETER WorkspaceName
The display name of the workspace to retrieve.
 
.EXAMPLE
Get-FabricWorkspace -WorkspaceId "workspace123"
 
Fetches details of the workspace with ID "workspace123".
 
.EXAMPLE
Get-FabricWorkspace -WorkspaceName "MyWorkspace"
 
Fetches details of the workspace with the name "MyWorkspace".
 
.NOTES
- Requires `$FabricConfig` global configuration, including `BaseUrl` and `FabricHeaders`.
- Calls `Test-TokenExpired` to ensure token validity before making the API request.
- Returns the matching workspace details or all workspaces if no filter is provided.
 
Author: Tiago Balabuch
#>


function Get-FabricWorkspace {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $false)]
        [ValidateNotNullOrEmpty()]
        [string]$WorkspaceId,

        [Parameter(Mandatory = $false)]
        [ValidateNotNullOrEmpty()]
        [ValidatePattern('^[a-zA-Z0-9_ ]*$')]
        [string]$WorkspaceName
    )

    try {
        # Step 1: Handle ambiguous input
        if ($WorkspaceId -and $WorkspaceName) {
            Write-Message -Message "Both 'WorkspaceId' and 'WorkspaceName' were provided. Please specify only one." -Level Error
            return $null
        }

        # Step 2: Ensure token validity
        Write-Message -Message "Validating token..." -Level Debug
        Test-TokenExpired
        Write-Message -Message "Token validation completed." -Level Debug

        # Step 3: Initialize variables
        $continuationToken = $null
        $workspaces = @()

        if (-not ([AppDomain]::CurrentDomain.GetAssemblies() | Where-Object { $_.GetName().Name -eq "System.Web" })) {
            Add-Type -AssemblyName System.Web
        }
 
        # Step 4: Loop to retrieve all capacities with continuation token
        Write-Message -Message "Loop started to get continuation token" -Level Debug
        $baseApiEndpointUrl = "{0}/workspaces" -f $FabricConfig.BaseUrl
        do {
            # Step 5: Construct the API URL
            $apiEndpointUrl = $baseApiEndpointUrl

            if ($null -ne $continuationToken) {
                # URL-encode the continuation token
                $encodedToken = [System.Web.HttpUtility]::UrlEncode($continuationToken)
                $apiEndpointUrl = "{0}?continuationToken={1}" -f $apiEndpointUrl, $encodedToken
            }
            Write-Message -Message "API Endpoint: $apiEndpointUrl" -Level Debug
 
            # Step 6: Make the API request
            $response = Invoke-RestMethod `
                -Headers $FabricConfig.FabricHeaders `
                -Uri $apiEndpointUrl `
                -Method Get `
                -ErrorAction Stop `
                -SkipHttpErrorCheck `
                -ResponseHeadersVariable "responseHeader" `
                -StatusCodeVariable "statusCode"
 
            # Step 7: Validate the response code
            if ($statusCode -ne 200) {
                Write-Message -Message "Unexpected response code: $statusCode from the API." -Level Error
                Write-Message -Message "Error: $($response.message)" -Level Error
                Write-Message -Message "Error Details: $($response.moreDetails)" -Level Error
                Write-Message "Error Code: $($response.errorCode)" -Level Error
                return $null
            }
 
            # Step 8: Add data to the list
            if ($null -ne $response) {
                Write-Message -Message "Adding data to the list" -Level Debug
                $workspaces += $response.value
         
                # Update the continuation token if present
                if ($response.PSObject.Properties.Match("continuationToken")) {
                    Write-Message -Message "Updating the continuation token" -Level Debug
                    $continuationToken = $response.continuationToken
                    Write-Message -Message "Continuation token: $continuationToken" -Level Debug
                }
                else {
                    Write-Message -Message "Updating the continuation token to null" -Level Debug
                    $continuationToken = $null
                }
            }
            else {
                Write-Message -Message "No data received from the API." -Level Warning
                break
            }
        } while ($null -ne $continuationToken)
        Write-Message -Message "Loop finished and all data added to the list" -Level Debug

        # Step 8: Filter results based on provided parameters
        $workspace = if ($WorkspaceId) {
            $workspaces | Where-Object { $_.Id -eq $WorkspaceId }
        }
        elseif ($WorkspaceName) {
            $workspaces | Where-Object { $_.DisplayName -eq $WorkspaceName }
        }
        else {
            # Return all workspaces if no filter is provided
            Write-Message -Message "No filter provided. Returning all workspaces." -Level Debug
            $workspaces
        }
            
        # Step 9: Handle results
        if ($workspace) {
            Write-Message -Message "Workspace found matching the specified criteria." -Level Debug
            return $workspace
        }
        else {
            Write-Message -Message "No workspace found matching the provided criteria." -Level Warning
            return $null
        }
    }
    catch {
        # Step 10: Capture and log error details
        $errorDetails = $_.Exception.Message
        Write-Message -Message "Failed to retrieve workspace. Error: $errorDetails" -Level Error
    }
}