Add Remote cache (#77)

* Add Remote cache

* lint

Author: Gsantomaggio

cmd/tools/cli/list.go

@@ -1,6 +1,7 @@
 package cli
 
 import (
+	"fmt"
 	"github.com/kf5i/k3ai-core/internal/plugins"
 	"github.com/spf13/cobra"
 )
@@ -13,27 +14,50 @@ func newListCommand() *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			group, _ := cmd.Flags().GetBool(plugins.GroupType)
 			if group {
-				var grs plugins.Groups
-				err := grs.List(repo + plugins.GroupsDir)
+
+				var cache plugins.Cache
+				err := cache.Encode(repo, "cache_groups.yaml")
 				if err != nil {
-					return err
+					fmt.Printf("Can't load cache:%s will use remote\n", err)
+					var grs plugins.Groups
+					err := grs.List(repo + plugins.GroupsDir)
+					if err != nil {
+						return err
+					}
+					PrintFormat("Name", "Description")
+					for _, p := range grs.Items {
+						PrintFormat(p.GroupName, p.GroupDescription)
+					}
+					return nil
 				}
 				PrintFormat("Name", "Description")
-				for _, p := range grs.Items {
-					PrintFormat(p.GroupName, p.GroupDescription)
+				for _, p := range cache.Items {
+					PrintFormat(p.Name, p.Description)
 				}
 
 				return nil
 			}
-			var pls plugins.Plugins
-			err := pls.List(repo + plugins.PluginDir)
+
+			var cache plugins.Cache
+			err := cache.Encode(repo, "cache_plugins.yaml")
 			if err != nil {
-				return err
-			}
+				fmt.Printf("Can't load cache:%s will use remote\n", err)
+
+				var pls plugins.Plugins
+				err = pls.List(repo + plugins.PluginDir)
+				if err != nil {
+					return err
+				}
 
+				PrintFormat("Name", "Description")
+				for _, p := range pls.Items {
+					PrintFormat(p.PluginName, p.PluginDescription)
+				}
+				return nil
+			}
 			PrintFormat("Name", "Description")
-			for _, p := range pls.Items {
-				PrintFormat(p.PluginName, p.PluginDescription)
+			for _, p := range cache.Items {
+				PrintFormat(p.Name, p.Description)
 			}
 
 			return nil

internal/plugins/cache.go

@@ -0,0 +1,22 @@
+package plugins
+
+import "github.com/kf5i/k3ai-core/internal/shared"
+
+// CacheItem the item cache
+type CacheItem struct {
+	Name        string `yaml:"name"`
+	Description string `yaml:"description"`
+}
+
+// Cache for plugins and groups
+type Cache struct {
+	Name  string      `yaml:"name"`
+	Type  string      `yaml:"type"`
+	Items []CacheItem `yaml:"items,flow"`
+}
+
+// Encode encode the cache to be printed
+func (cache *Cache) Encode(URL string, fileCache string) error {
+	cacheURL := shared.IncludeSlash(URL, "/") + fileCache
+	return encode(cacheURL, cache)
+}