handle plugin manifests automatically

Emby.Server.Implementations/Plugins/PluginManager.cs

@@ -1,12 +1,13 @@
 #nullable enable
+
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Net;
 using System.Reflection;
 using System.Text;
 using System.Text.Json;
-using System.Threading.Tasks;
 using MediaBrowser.Common;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Common.Json;
@@ -14,6 +15,7 @@ using MediaBrowser.Common.Json.Converters;
 using MediaBrowser.Common.Plugins;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Plugins;
+using MediaBrowser.Model.Updates;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 
@@ -332,34 +334,54 @@ namespace Emby.Server.Implementations.Plugins
             ChangePluginState(plugin, PluginStatus.Malfunctioned);
         }
 
-        /// <summary>
-        /// Saves the manifest back to disk.
-        /// </summary>
-        /// <param name="manifest">The <see cref="PluginManifest"/> to save.</param>
-        /// <param name="path">The path where to save the manifest.</param>
-        /// <returns>True if successful.</returns>
+        /// <inheritdoc/>
         public bool SaveManifest(PluginManifest manifest, string path)
         {
-            if (manifest == null)
-            {
-                return false;
-            }
-
             try
             {
                 var data = JsonSerializer.Serialize(manifest, _jsonOptions);
                 File.WriteAllText(Path.Combine(path, "meta.json"), data);
                 return true;
             }
-#pragma warning disable CA1031 // Do not catch general exception types
-            catch (Exception e)
-#pragma warning restore CA1031 // Do not catch general exception types
+            catch (ArgumentException e)
             {
-                _logger.LogWarning(e, "Unable to save plugin manifest. {Path}", path);
+                _logger.LogWarning(e, "Unable to save plugin manifest due to invalid value. {Path}", path);
                 return false;
             }
         }
 
+        /// <inheritdoc/>
+        public bool GenerateManifest(PackageInfo packageInfo, Version version, string path)
+        {
+            var versionInfo = packageInfo.Versions.First(v => v.Version == version.ToString());
+            var url = packageInfo.ImageUrl ?? string.Empty;
+            var imageFilename = url.Substring(url.LastIndexOf('/') + 1, url.Length);
+
+            using (var client = new WebClient())
+            {
+                client.DownloadFile(url, Path.Join(path, imageFilename));
+            }
+
+            var manifest = new PluginManifest
+            {
+                Category = packageInfo.Category,
+                Changelog = versionInfo.Changelog ?? string.Empty,
+                Description = packageInfo.Description,
+                Id = new Guid(packageInfo.Id),
+                Name = packageInfo.Name,
+                Overview = packageInfo.Overview,
+                Owner = packageInfo.Owner,
+                TargetAbi = versionInfo.TargetAbi ?? string.Empty,
+                Timestamp = DateTime.Parse(versionInfo.Timestamp ?? string.Empty),
+                Version = versionInfo.Version,
+                Status = PluginStatus.Active,
+                AutoUpdate = true,
+                ImagePath = Path.Join(path, imageFilename)
+            };
+
+            return SaveManifest(manifest, path);
+        }
+
         /// <summary>
         /// Changes a plugin's load status.
         /// </summary>
@@ -410,7 +432,7 @@ namespace Emby.Server.Implementations.Plugins
                 if (plugin == null)
                 {
                     // Create a dummy record for the providers.
-                    // TODO: remove this code, if all provided have been released as separate plugins.
+                    // TODO: remove this code once all provided have been released as separate plugins.
                     plugin = new LocalPlugin(
                         instance.AssemblyFilePath,
                         true,

Emby.Server.Implementations/Updates/InstallationManager.cs

@@ -192,17 +192,12 @@ namespace Emby.Server.Implementations.Updates
                             var version = package.Versions[i];
 
                             var plugin = _pluginManager.GetPlugin(packageGuid, version.VersionNumber);
-                            // Update the manifests, if anything changes.
                             if (plugin != null)
                             {
-                                if (!string.Equals(plugin.Manifest.TargetAbi, version.TargetAbi, StringComparison.Ordinal))
-                                {
-                                    plugin.Manifest.TargetAbi = version.TargetAbi ?? string.Empty;
-                                    _pluginManager.SaveManifest(plugin.Manifest, plugin.Path);
-                                }
+                                _pluginManager.GenerateManifest(package, version.VersionNumber, plugin.Path);
                             }
 
-                            // Remove versions with a target abi that is greater then the current application version.
+                            // Remove versions with a target ABI greater then the current application version.
                             if (Version.TryParse(version.TargetAbi, out var targetAbi) && _applicationHost.ApplicationVersion < targetAbi)
                             {
                                 package.Versions.RemoveAt(i);
@@ -294,7 +289,8 @@ namespace Emby.Server.Implementations.Updates
                     Name = package.Name,
                     Version = v.VersionNumber,
                     SourceUrl = v.SourceUrl,
-                    Checksum = v.Checksum
+                    Checksum = v.Checksum,
+                    PackageInfo = package
                 };
             }
         }
@@ -571,24 +567,16 @@ namespace Emby.Server.Implementations.Updates
 
             stream.Position = 0;
             _zipClient.ExtractAllFromZip(stream, targetDir, true);
+            _pluginManager.GenerateManifest(package.PackageInfo, package.Version, targetDir);
             _pluginManager.ImportPluginFrom(targetDir);
         }
 
         private async Task<bool> InstallPackageInternal(InstallationInfo package, CancellationToken cancellationToken)
         {
-            // Set last update time if we were installed before
             LocalPlugin? plugin = _pluginManager.Plugins.FirstOrDefault(p => p.Id.Equals(package.Id) && p.Version.Equals(package.Version))
                   ?? _pluginManager.Plugins.FirstOrDefault(p => p.Name.Equals(package.Name, StringComparison.OrdinalIgnoreCase) && p.Version.Equals(package.Version));
-            if (plugin != null)
-            {
-                plugin.Manifest.Timestamp = DateTime.UtcNow;
-                _pluginManager.SaveManifest(plugin.Manifest, plugin.Path);
-            }
 
-            // Do the install
             await PerformPackageInstallation(package, cancellationToken).ConfigureAwait(false);
-
-            // Do plugin-specific processing
             _logger.LogInformation(plugin == null ? "New plugin installed: {PluginName} {PluginVersion}" : "Plugin updated: {PluginName} {PluginVersion}", package.Name, package.Version);
 
             return plugin != null;

MediaBrowser.Common/Plugins/IPluginManager.cs

@@ -4,6 +4,7 @@ using System;
 using System.Collections.Generic;
 using System.Reflection;
 using System.Threading.Tasks;
+using MediaBrowser.Model.Updates;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace MediaBrowser.Common.Plugins
@@ -44,6 +45,15 @@ namespace MediaBrowser.Common.Plugins
         /// <returns>True if successful.</returns>
         bool SaveManifest(PluginManifest manifest, string path);
 
+        /// <summary>
+        /// Generates a manifest from repository data.
+        /// </summary>
+        /// <param name="packageInfo">The <see cref="PackageInfo"/> used to generate a manifest.</param>
+        /// <param name="version">Version to be installed.</param>
+        /// <param name="path">The path where to save the manifest.</param>
+        /// <returns>True if successful.</returns>
+        bool GenerateManifest(PackageInfo packageInfo, Version version, string path);
+
         /// <summary>
         /// Imports plugin details from a folder.
         /// </summary>

MediaBrowser.Model/Updates/InstallationInfo.cs

@@ -1,4 +1,5 @@
 #nullable disable
+
 using System;
 using System.Text.Json.Serialization;
 
@@ -45,5 +46,11 @@ namespace MediaBrowser.Model.Updates
         /// </summary>
         /// <value>The checksum.</value>
         public string Checksum { get; set; }
+
+        /// <summary>
+        /// Gets or sets package information for the installation.
+        /// </summary>
+        /// <value>The package information.</value>
+        public PackageInfo PackageInfo { get; set; }
     }
 }