修改 CloudProduct ImageCache 项目改为 插件

Core/MAX.Plugins/PluginBase.cs

@@ -0,0 +1,32 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace MAX.Plugins;
+
+public abstract class PluginBase : IPlugin
+{
+    public abstract string Id { get; }
+    public virtual int Priority => 0;
+    protected PluginContext Context { get; private set; } = null!;
+
+    public void ConfigureServices(IServiceCollection services, PluginContext context)
+    {
+        ArgumentNullException.ThrowIfNull(services);
+        ArgumentNullException.ThrowIfNull(context);
+        if (!string.Equals(Id, context.Id, StringComparison.Ordinal))
+            throw new ArgumentException("插件上下文标识不匹配。", nameof(context));
+        if (Context is not null) throw new InvalidOperationException($"插件 {Id} 已注册。");
+        Context = context;
+        RegisterServices(services);
+    }
+
+    public void Configure(IApplicationBuilder app, PluginContext context)
+    {
+        if (!ReferenceEquals(Context, context))
+            throw new InvalidOperationException($"插件 {Id} 尚未注册或上下文不匹配。");
+        ConfigureApplication(app);
+    }
+    protected abstract void RegisterServices(IServiceCollection services);
+    protected virtual void ConfigureApplication(IApplicationBuilder app) { }
+    protected string RequireConfiguration(string key) => Context.RequireConfiguration(key);
+}