Refactoring *-PSResourceRepository cmdlets (Register, Get, Unregister)

src/code/ArgumentCompleter.cs

@@ -0,0 +1,36 @@
+using System.ComponentModel;
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using Microsoft.PowerShell.PowerShellGet.UtilClasses;
+using System.Collections;
+using System.Collections.Generic;
+using System.Management.Automation;
+using System.Management.Automation.Language;
+
+internal class RepositoryNameCompleter : IArgumentCompleter
+{
+    public IEnumerable<CompletionResult> CompleteArgument(
+        string commandName,
+        string parameterName,
+        string wordToComplete,
+        CommandAst commandAst,
+        IDictionary fakeBoundParameters)
+    {
+        List<PSRepositoryInfo> listOfRepositories = RepositorySettings.Read(null, out string[] _);
+
+        wordToComplete = Utils.TrimQuotes(wordToComplete);
+        var wordToCompletePattern = WildcardPattern.Get(
+            pattern: string.IsNullOrWhiteSpace(wordToComplete) ? "*" : wordToComplete + "*",
+            options: WildcardOptions.IgnoreCase);
+
+        foreach (PSRepositoryInfo repo in listOfRepositories)
+        {
+            string repoName = repo.Name;
+            if (wordToCompletePattern.IsMatch(repoName))
+            {
+                yield return new CompletionResult(Utils.QuoteName(repoName));
+            }
+        }
+    }
+}

src/code/GetPSResourceRepository.cs

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+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using Microsoft.PowerShell.PowerShellGet.UtilClasses;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Management.Automation;
+
+namespace Microsoft.PowerShell.PowerShellGet.Cmdlets
+{
+    /// <summary>
+    /// The Get-PSResourceRepository cmdlet replaces the Get-PSRepository cmdlet from V2.
+    /// It searches for the PowerShell module repositories that are registered for the current user.
+    /// By default it will return all registered repositories, or if the -Name parameter argument is specified then it wil return the repository with that name.
+    /// It returns PSRepositoryInfo objects which describe each resource item found.
+    /// </summary>
+
+    [Cmdlet(VerbsCommon.Get,
+        "PSResourceRepository",
+        HelpUri = "<add>")]
+    public sealed
+    class GetPSResourceRepository : PSCmdlet
+    {
+        #region Parameters
+
+        /// <summary>
+        /// Specifies the name(s) of a registered repository to find.
+        /// Supports wild card characters.
+        /// </summary>
+        [Parameter(Position = 0, ValueFromPipeline = true, ValueFromPipelineByPropertyName = true)]
+        [ArgumentCompleter(typeof(RepositoryNameCompleter))]
+        [ValidateNotNullOrEmpty]
+        public string[] Name { get; set; } = new string[0];
+
+        #endregion
+
+        #region Methods
+
+        protected override void BeginProcessing()
+        {
+            try
+            {
+                WriteDebug("Calling API to check repository store exists in non-corrupted state");
+                RepositorySettings.CheckRepositoryStore();
+            }
+            catch (PSInvalidOperationException e)
+            {
+                ThrowTerminatingError(new ErrorRecord(
+                    new PSInvalidOperationException(e.Message),
+                    "RepositoryStoreException",
+                    ErrorCategory.ReadError,
+                    this));
+            }
+        }
+        protected override void ProcessRecord()
+        {
+            string nameArrayAsString = (Name == null || !Name.Any() || string.Equals(Name[0], "*") || Name[0] == null) ? "all" : string.Join(", ", Name);
+            WriteDebug(String.Format("reading repository: {0}. Calling Read() API now", nameArrayAsString));
+            List<PSRepositoryInfo> items = RepositorySettings.Read(Name, out string[] errorList);
+
+            // handle non-terminating errors
+            foreach (string error in errorList)
+            {
+                WriteError(new ErrorRecord(
+                    new PSInvalidOperationException(error),
+                    "ErrorGettingSpecifiedRepo",
+                    ErrorCategory.InvalidOperation,
+                    this));
+            }
+
+            foreach (PSRepositoryInfo repo in items)
+            {
+                WriteObject(repo);
+            }
+        }
+
+        #endregion
+    }
+}

src/code/PSRepositoryInfo.cs

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+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using System;
+using System.Management.Automation;
+
+namespace Microsoft.PowerShell.PowerShellGet.UtilClasses
+{
+    /// <summary>
+    /// This class contains information for a repository item.
+    /// </summary>
+    public sealed class PSRepositoryInfo
+    {
+        #region Constructor
+
+        public PSRepositoryInfo(string name, Uri url, int priority, bool trusted)
+        {
+            Name = name;
+            Url = url;
+            Priority = priority;
+            Trusted = trusted;
+        }
+
+        #endregion
+
+        #region Properties
+
+        /// <summary>
+        /// the Name of the repository
+        /// </summary>
+        public string Name { get; }
+
+        /// <summary>
+        /// the Url for the repository
+        /// </summary>
+        public Uri Url { get; }
+
+        /// <summary>
+        /// whether the repository is trusted
+        public bool Trusted { get; }
+
+        /// <summary>
+        /// the priority of the repository
+        /// </summary>
+        [ValidateRange(0, 50)]
+        public int Priority { get; }
+
+        #endregion
+    }
+}