Added commands to set meta data, like owner, group and permissions of key.

main.go

@@ -9,6 +9,7 @@ import (
 	"io"
 	"net/http"
 	"os"
+	"strconv"
 	"strings"
 	"time"
 
@@ -313,6 +314,134 @@ func (c *KVSClient) handleDelete(args []string) {
 	}
 }
 
+// handleMeta is the dispatcher for "meta" sub-commands
+func (c *KVSClient) handleMeta(args []string) {
+	if len(args) == 0 {
+		fmt.Println(red("Usage: meta <get|set> [options]"))
+		return
+	}
+
+	subCmd := args[0]
+	switch subCmd {
+	case "get":
+		c.handleMetaGet(args[1:])
+	case "set":
+		c.handleMetaSet(args[1:])
+	default:
+		fmt.Println(red("Unknown meta command:"), subCmd)
+		fmt.Println("Available commands: get, set")
+	}
+}
+
+// handleMetaGet fetches and displays metadata for a key
+func (c *KVSClient) handleMetaGet(args []string) {
+	if len(args) < 1 {
+		fmt.Println(red("Usage: meta get <key>"))
+		return
+	}
+	key := args[0]
+
+	respBody, status, err := c.doRequest("GET", "/kv/"+key+"/metadata", nil)
+	if err != nil {
+		fmt.Println(red("Error:"), err)
+		return
+	}
+
+	if status == http.StatusNotFound {
+		fmt.Println(yellow("No metadata found for key:"), key)
+		return
+	}
+
+	if status != http.StatusOK {
+		fmt.Printf(red("Error getting metadata (status %d):\n"), status)
+		fmt.Println(string(respBody))
+		return
+	}
+
+	// Struct to parse the metadata response
+	type MetaResponse struct {
+		OwnerUUID   string `json:"owner_uuid"`
+		GroupUUID   string `json:"group_uuid"`
+		Permissions int    `json:"permissions"`
+		CreatedAt   int64  `json:"created_at"`
+		UpdatedAt   int64  `json:"updated_at"`
+	}
+
+	var meta MetaResponse
+	if err := json.Unmarshal(respBody, &meta); err != nil {
+		fmt.Println(red("Error parsing metadata response:"), err)
+		return
+	}
+
+	fmt.Println(cyan("Metadata for key:"), key)
+	fmt.Printf("  Owner UUID:   %s\n", meta.OwnerUUID)
+	fmt.Printf("  Group UUID:   %s\n", meta.GroupUUID)
+	fmt.Printf("  Permissions:  %d\n", meta.Permissions)
+	fmt.Printf("  Created At:   %s\n", time.Unix(meta.CreatedAt, 0).Format(time.RFC3339))
+	fmt.Printf("  Updated At:   %s\n", time.Unix(meta.UpdatedAt, 0).Format(time.RFC3339))
+}
+
+// handleMetaSet updates metadata for a key using flags
+func (c *KVSClient) handleMetaSet(args []string) {
+	if len(args) < 3 {
+		fmt.Println(red("Usage: meta set <key> --owner <uuid> | --group <uuid> | --permissions <number>"))
+		return
+	}
+	key := args[0]
+	
+	// Use a map to build the JSON payload for partial updates
+	payload := make(map[string]interface{})
+
+	// Parse command-line flags
+	for i := 1; i < len(args); i++ {
+		switch args[i] {
+		case "--owner":
+			if i+1 < len(args) {
+				payload["owner_uuid"] = args[i+1]
+				i++ // Skip the value
+			}
+		case "--group":
+			if i+1 < len(args) {
+				payload["group_uuid"] = args[i+1]
+				i++ // Skip the value
+			}
+		case "--permissions":
+			if i+1 < len(args) {
+				perms, err := strconv.Atoi(args[i+1])
+				if err != nil {
+					fmt.Println(red("Invalid permissions value:"), args[i+1])
+					return
+				}
+				payload["permissions"] = perms
+				i++ // Skip the value
+			}
+		}
+	}
+
+	if len(payload) == 0 {
+		fmt.Println(red("No valid metadata fields provided to set."))
+		return
+	}
+
+	respBody, status, err := c.doRequest("PUT", "/kv/"+key+"/metadata", payload)
+	if err != nil {
+		fmt.Println(red("Error:"), err)
+		return
+	}
+
+	if status != http.StatusOK {
+		fmt.Printf(red("Error setting metadata (status %d):\n"), status)
+		fmt.Println(string(respBody))
+		return
+	}
+
+	fmt.Println(green("Metadata updated successfully for key:"), key)
+	// The response body contains the full updated metadata, so we can print it for confirmation
+	var pretty bytes.Buffer
+	json.Indent(&pretty, respBody, "", "  ")
+	fmt.Println(pretty.String())
+}
+
 func (c *KVSClient) handleMembers(args []string) {
 	respBody, status, err := c.doRequest("GET", "/members/", nil)
 	if err != nil {
@@ -408,6 +537,43 @@ func (c *KVSClient) handleUserGet(args []string) {
 	fmt.Printf("  Updated:       %s\n", time.Unix(user.UpdatedAt, 0).Format(time.RFC3339))
 }
 
+func (c *KVSClient) handleUserCreate(args []string) {
+	if len(args) < 1 {
+		fmt.Println(red("Usage: user create <nickname>"))
+		return
+	}
+
+	// The request body requires a JSON object like {"nickname": "..."}
+	requestPayload := map[string]string{
+		"nickname": args[0],
+	}
+
+	respBody, status, err := c.doRequest("POST", "/api/users", requestPayload)
+	if err != nil {
+		fmt.Println(red("Error:"), err)
+		return
+	}
+
+	// The backend returns 200 OK on success
+	if status != http.StatusOK {
+		fmt.Printf(red("Error creating user (status %d):\n"), status)
+		fmt.Println(string(respBody))
+		return
+	}
+
+	// Parse the successful response to get the new user's UUID
+	var response struct {
+		UUID string `json:"uuid"`
+	}
+	if err := json.Unmarshal(respBody, &response); err != nil {
+		fmt.Println(red("Error parsing successful response:"), err)
+		return
+	}
+
+	fmt.Println(green("User created successfully"))
+	fmt.Println(cyan("UUID:"), response.UUID)
+}
+
 func (c *KVSClient) handleHelp(args []string) {
 	help := `
 KVS Interactive Shell - Available Commands:
@@ -425,6 +591,11 @@ Key-Value Operations:
   put <key> <json>           - Store JSON value at key
   delete <key>               - Delete key
 
+Resource Metadata:
+  meta get <key>             - Get metadata (owner, group) for a key
+  meta set <key> [flags]     - Set metadata for a key
+    Flags: --owner <uuid>, --group <uuid>, --permissions <number>
+
 Cluster Management:
   members                    - List cluster members
   health                     - Check service health
@@ -500,14 +671,25 @@ func main() {
 			client.handlePut(args)
 		case "delete":
 			client.handleDelete(args)
+		case "meta":
+			client.handleMeta(args)
 		case "members":
 			client.handleMembers(args)
 		case "health":
 			client.handleHealth(args)
 		case "user":
-			if len(args) > 0 && args[0] == "get" {
-				client.handleUserGet(args[1:])
+			if len(args) > 0 {
+				switch args[0] {
+				case "get":
+					client.handleUserGet(args[1:])
+				case "create":
+					client.handleUserCreate(args[1:])
+				default:
+					fmt.Println(red("Unknown user command:"), args[0])
+					fmt.Println("Type 'help' for available commands")
+				}
 			} else {
+				// This was the original behavior, which notes that listing users is not implemented.
 				client.handleUserList(args)
 			}
 		default:
@@ -529,6 +711,14 @@ var completer = readline.NewPrefixCompleter(
 	readline.PcItem("get"),
 	readline.PcItem("put"),
 	readline.PcItem("delete"),
+	readline.PcItem("meta",
+		readline.PcItem("get"),
+		readline.PcItem("set",
+			readline.PcItem("--owner"),
+			readline.PcItem("--group"),
+			readline.PcItem("--permissions"),
+		),
+	),
 	readline.PcItem("members"),
 	readline.PcItem("health"),
 	readline.PcItem("user",