Add links to license and source code in footer (#909)

* Display link to source code and license in footer

* Remove " (fetch)" suffix in remote URL

* Use split instead of replace for getting the clean remote URL

* Open license link in new tab as well

* LINQ-ify things and handle potential errors

* Properly detect remote URL type and parse accordingly

Squashed 3 commits:

* Properly detect remote URL type and parse accordingly
* Actually fix broken source code link...maybe
* Attempt to fix broken source code link

* Fix a kokoism

Perhaps we should actually utilize the firstRemoteUnparsedUrl variable instead of getting the FirstOrDefault remote over and over

* Fix missing slash when using an SSH remote

* Assign null to parsed URL variable by default

Thank you clyde discord

* Only perform the null check on the unparsed URL once

Thank you again clyde discord

* Handle exception when there are no defined remotes

* Move remote determination to VersionHelper and format file

Squashed 4 commits:

* Nitpick variable naming and add XML doc
* Use preferred braces style
* Return null directly if unparsed URL is null
* Move remote determination to VersionHelper and format file

* Add param to include HTTPS prefix in DetermineRemoteUrl method

* Remove warnings from XML doc

Not needed as of c63284cb37

* Properly insert HTTPS prefix into SSH remotes

* Fix license layout and improve git remote parsing

---------

Co-authored-by: Slendy <josh@slendy.pw>

ProjectLighthouse.Servers.Website/Pages/Layouts/BaseLayout.cshtml

@@ -191,8 +191,28 @@
     <footer>
         <div class="ui black attached inverted segment">
             <div class="ui container">
-
+                @{
-                <p>@Model.Translate(BaseLayoutStrings.GeneratedBy, VersionHelper.FullVersion)</p>
+                    string? remoteUrl = VersionHelper.DetermineRemoteUrl();
+                }
+                <span>
+                    @Model.Translate(BaseLayoutStrings.GeneratedBy, VersionHelper.FullVersion)
+                </span>
+                <span style="float: right;">
+                    <a href="https://github.com/LBPUnion/ProjectLighthouse/blob/main/LICENSE" target="_blank">
+                        AGPL-3.0 License
+                    </a>
+                    &centerdot;
+                    @if (!string.IsNullOrWhiteSpace(remoteUrl))
+                    {
+                        <a href="https://@remoteUrl" target="_blank">
+                            Source Code
+                        </a>
+                    }
+                    else
+                    {
+                        <span class="ui text red">Cannot Detect Source Code</span>
+                    }
+                </span>
                 @if (VersionHelper.IsDirty)
                 {
                     <p>@Model.Translate(BaseLayoutStrings.GeneratedModified)</p>

ProjectLighthouse/Helpers/VersionHelper.cs

@@ -1,11 +1,12 @@
 using System.Linq;
+using System.Text.RegularExpressions;
 using LBPUnion.ProjectLighthouse.Configuration;
 using LBPUnion.ProjectLighthouse.Logging;
 using LBPUnion.ProjectLighthouse.Types.Logging;
 
 namespace LBPUnion.ProjectLighthouse.Helpers;
 
-public static class VersionHelper
+public static partial class VersionHelper
 {
     static VersionHelper()
     {
@@ -32,11 +33,8 @@ public static class VersionHelper
         }
         catch
         {
-            Logger.Error
+            Logger.Error("Project Lighthouse was built incorrectly. Please make sure git is available when building.",
-            (
+                LogArea.Startup);
-                "Project Lighthouse was built incorrectly. Please make sure git is available when building.",
-                LogArea.Startup
-            );
             CommitHash = "invalid";
             Branch = "invalid";
             CanCheckForUpdates = false;
@@ -44,27 +42,49 @@ public static class VersionHelper
 
         if (!IsDirty) return;
 
-        Logger.Warn
+        Logger.Warn("This is a modified version of Project Lighthouse. " +
-        (
-            "This is a modified version of Project Lighthouse. " +
                     "Please make sure you are properly disclosing the source code to any users who may be using this instance.",
-            LogArea.Startup
+            LogArea.Startup);
-        );
         CanCheckForUpdates = false;
     }
 
+    [GeneratedRegex(@"((git|ssh|http(s)?)|(git@[\w\.-]+))(:(\/\/)?)([\w\.@\:\/\-~]+)((\.git)(\/))?( .+)?")]
+    private static partial Regex GitRemoteRegex();
+
+    #nullable enable
+    /// <summary>
+    ///     Determines the URL of the git remote.
+    /// </summary>
+    public static string? DetermineRemoteUrl()
+    {
+        string? remote = Remotes?.FirstOrDefault();
+        if (remote == null) return null;
+
+        Match match = GitRemoteRegex().Match(remote);
+
+        if (!match.Success || match.Groups.Count != 12) return null;
+
+        return match.Groups[7].Value;
+    }
+    #nullable disable
+
     public static string CommitHash { get; set; }
     public static string Branch { get; set; }
     /// <summary>
     ///     The full revision string. States current revision hash and, if not main, the branch.
     /// </summary>
-    public static string FullRevision { get; set; }
+    private static string FullRevision { get; set; }
     /// <summary>
-    /// The server's branding (environment version) to show to LBP clients. Shows the environment name next to the revision.
+    ///     The server's branding (environment version) to show to LBP clients. Shows the environment name next to the
+    ///     revision.
     /// </summary>
     public static string EnvVer => $"{ServerConfiguration.Instance.Customization.EnvironmentName} {FullRevision}";
-    public static string FullVersion => $"Project Lighthouse {ServerConfiguration.Instance.Customization.EnvironmentName} {Branch}@{CommitHash} {Build}";
+    public static string FullVersion =>
-    public static bool IsDirty => CommitHash.EndsWith("-dirty") || CommitsOutOfDate != 1 || CommitHash == "invalid" || Branch == "invalid";
+        $"Project Lighthouse {ServerConfiguration.Instance.Customization.EnvironmentName} {Branch}@{CommitHash} {Build}";
+    public static bool IsDirty => CommitHash.EndsWith("-dirty") ||
+                                  CommitsOutOfDate != 1 ||
+                                  CommitHash == "invalid" ||
+                                  Branch == "invalid";
     public static int CommitsOutOfDate { get; set; }
     public static bool CanCheckForUpdates { get; set; }
     public static string[] Remotes { get; set; }