Plugins, Bugfixes & Cleanup

app/plugin_loader.go

@@ -0,0 +1,59 @@
+package app
+
+import (
+	"log"
+	"os"
+	"plugin"
+
+	"github.com/yeslayla/birdbot/common"
+)
+
+type PluginLoader struct{}
+
+func NewPluginLoader() PluginLoader {
+	return PluginLoader{}
+}
+
+func (loader PluginLoader) LoadPlugin(pluginPath string) common.Component {
+	plug, err := plugin.Open(pluginPath)
+	if err != nil {
+		log.Printf("Failed to load plugin '%s': %s", pluginPath, err)
+		return nil
+	}
+
+	sym, err := plug.Lookup("Component")
+	if err != nil {
+		log.Printf("Failed to load plugin '%s': failed to get Component: %s", pluginPath, err)
+		return nil
+	}
+
+	var component common.Component
+	component, ok := sym.(common.Component)
+	if !ok {
+		log.Printf("Failed to load plugin '%s': Plugin component does not properly implement interface!", pluginPath)
+	}
+
+	return component
+}
+
+func (loader PluginLoader) LoadPlugins(directory string) []common.Component {
+
+	paths, err := os.ReadDir(directory)
+	if err != nil {
+		log.Printf("Failed to load plugins: %s", err)
+		return []common.Component{}
+	}
+
+	var components []common.Component = make([]common.Component, 0)
+	for _, path := range paths {
+		if path.IsDir() {
+			continue
+		}
+
+		if comp := loader.LoadPlugin(path.Name()); comp != nil {
+			components = append(components, comp)
+		}
+	}
+
+	return components
+}