feat: add registriy list cmd (#19)

* registry list cmd

* added verbose for detailed view

* updated the registry api

Author: thelonewolf1603

CLAUDE.md

@@ -4,7 +4,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Project Overview
 
-This is a Go-based CLI tool for interacting with JuliaHub, a platform for Julia computing. The CLI provides commands for authentication, dataset management, project management, user information, Git integration, and Julia integration.
+This is a Go-based CLI tool for interacting with JuliaHub, a platform for Julia computing. The CLI provides commands for authentication, dataset management, registry management, project management, user information, Git integration, and Julia integration.
 
 ## Architecture
 
@@ -13,6 +13,7 @@ The application follows a command-line interface pattern using the Cobra library
 - **main.go**: Core CLI structure with command definitions and configuration management
 - **auth.go**: OAuth2 device flow authentication with JWT token handling
 - **datasets.go**: Dataset operations (list, download, upload, status) with REST API integration
+- **registries.go**: Registry operations (list) with REST API integration
 - **projects.go**: Project management using GraphQL API with user filtering
 - **user.go**: User information retrieval using GraphQL API
 - **git.go**: Git integration (clone, push, fetch, pull) with JuliaHub authentication
@@ -29,14 +30,15 @@ The application follows a command-line interface pattern using the Cobra library
    - Stores tokens securely in `~/.juliahub` with 0600 permissions
 
 2. **API Integration**:
-   - **REST API**: Used for dataset operations (`/api/v1/datasets`, `/datasets/{uuid}/url/{version}`)
+   - **REST API**: Used for dataset operations (`/api/v1/datasets`, `/datasets/{uuid}/url/{version}`) and registry operations (`/api/v1/ui/registries/descriptions`)
    - **GraphQL API**: Used for projects and user info (`/v1/graphql`)
    - **Headers**: All GraphQL requests require `X-Hasura-Role: jhuser` header
    - **Authentication**: Uses ID tokens (`token.IDToken`) for API calls
 
 3. **Command Structure**:
    - `jh auth`: Authentication commands (login, refresh, status, env)
    - `jh dataset`: Dataset operations (list, download, upload, status)
+   - `jh registry`: Registry operations (list with REST API, supports verbose mode)
    - `jh project`: Project management (list with GraphQL, supports user filtering)
    - `jh user`: User information (info with GraphQL)
    - `jh clone`: Git clone with JuliaHub authentication and project name resolution
@@ -84,6 +86,12 @@ go run . dataset download <dataset-name>
 go run . dataset upload --new ./file.tar.gz
 ```
 
+### Test registry operations
+```bash
+go run . registry list
+go run . registry list --verbose
+```
+
 ### Test project and user operations
 ```bash
 go run . project list
@@ -278,6 +286,7 @@ jh run setup
 - Clone command supports `project` (without username) and defaults to the logged-in user's username
 - Folder naming conflicts are resolved with automatic numbering (project-1, project-2, etc.)
 - Credential helper follows Git protocol: responds only to JuliaHub URLs, ignores others
+- Registry list output is concise by default (UUID and Name only); use `--verbose` flag for detailed information (owner, creation date, package count, description)
 
 ## Implementation Details
 

README.md

@@ -6,6 +6,7 @@ A command-line interface for interacting with JuliaHub, a platform for Julia com
 
 - **Authentication**: OAuth2 device flow authentication with JWT token handling
 - **Dataset Management**: List, download, upload, and check status of datasets
+- **Registry Management**: List and manage Julia package registries
 - **Project Management**: List and filter projects using GraphQL API
 - **Git Integration**: Clone, push, fetch, and pull with automatic JuliaHub authentication
 - **Julia Integration**: Install Julia and run with JuliaHub package server configuration
@@ -148,6 +149,12 @@ go build -o jh .
 - `jh dataset upload [dataset-id] <file-path>` - Upload a dataset
 - `jh dataset status <dataset-id> [version]` - Show dataset status
 
+### Registry Management (`jh registry`)
+
+- `jh registry list` - List all package registries on JuliaHub
+  - Default: Shows only UUID and Name
+  - `jh registry list --verbose` - Show detailed registry information including owner, creation date, package count, and description
+
 ### Project Management (`jh project`)
 
 - `jh project list` - List all accessible projects
@@ -214,6 +221,19 @@ jh dataset upload --new ./my-data.tar.gz
 jh dataset upload my-dataset ./updated-data.tar.gz
 ```
 
+### Registry Operations
+
+```bash
+# List all registries (UUID and Name only)
+jh registry list
+
+# List registries with detailed information
+jh registry list --verbose
+
+# List registries on custom server
+jh registry list -s yourinstall
+```
+
 ### Project Operations
 
 ```bash

main.go

@@ -161,11 +161,12 @@ job execution, project management, Git integration, and package hosting capabili
 Available command categories:
   auth      - Authentication and token management
   dataset   - Dataset operations (list, download, upload, status)
+  registry  - Registry management (list registries)
   project   - Project management (list, filter by user)
   user      - User information and profile
   clone     - Clone projects with automatic authentication
   push      - Push changes with authentication
-  fetch     - Fetch updates with authentication  
+  fetch     - Fetch updates with authentication
   pull      - Pull changes with authentication
   julia     - Julia installation and management
   run       - Run Julia with JuliaHub configuration
@@ -550,6 +551,47 @@ Displays:
 	},
 }
 
+var registryCmd = &cobra.Command{
+	Use:   "registry",
+	Short: "Registry management commands",
+	Long: `Manage Julia package registries on JuliaHub.
+
+Registries are collections of Julia packages that can be registered and
+installed. JuliaHub supports multiple registries including the General
+registry, custom organizational registries, and test registries.`,
+}
+
+var registryListCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List registries",
+	Long: `List all package registries on JuliaHub.
+
+By default, displays only UUID and Name for each registry.
+Use --verbose flag to display comprehensive information including:
+- Registry UUID
+- Registry name and ID
+- Owner information
+- Creation date
+- Package count
+- Description
+- Registration status`,
+	Example: "  jh registry list\n  jh registry list --verbose\n  jh registry list -s custom-server.com",
+	Run: func(cmd *cobra.Command, args []string) {
+		server, err := getServerFromFlagOrConfig(cmd)
+		if err != nil {
+			fmt.Printf("Failed to get server config: %v\n", err)
+			os.Exit(1)
+		}
+
+		verbose, _ := cmd.Flags().GetBool("verbose")
+
+		if err := listRegistries(server, verbose); err != nil {
+			fmt.Printf("Failed to list registries: %v\n", err)
+			os.Exit(1)
+		}
+	},
+}
+
 var projectCmd = &cobra.Command{
 	Use:   "project",
 	Short: "Project management commands",
@@ -982,6 +1024,8 @@ func init() {
 	datasetUploadCmd.Flags().StringP("server", "s", "juliahub.com", "JuliaHub server")
 	datasetUploadCmd.Flags().Bool("new", false, "Create a new dataset")
 	datasetStatusCmd.Flags().StringP("server", "s", "juliahub.com", "JuliaHub server")
+	registryListCmd.Flags().StringP("server", "s", "juliahub.com", "JuliaHub server")
+	registryListCmd.Flags().Bool("verbose", false, "Show detailed registry information")
 	projectListCmd.Flags().StringP("server", "s", "juliahub.com", "JuliaHub server")
 	projectListCmd.Flags().String("user", "", "Filter projects by user (leave empty to show only your own projects)")
 	userInfoCmd.Flags().StringP("server", "s", "juliahub.com", "JuliaHub server")
@@ -994,13 +1038,14 @@ func init() {
 	authCmd.AddCommand(authLoginCmd, authRefreshCmd, authStatusCmd, authEnvCmd)
 	jobCmd.AddCommand(jobListCmd, jobStartCmd)
 	datasetCmd.AddCommand(datasetListCmd, datasetDownloadCmd, datasetUploadCmd, datasetStatusCmd)
+	registryCmd.AddCommand(registryListCmd)
 	projectCmd.AddCommand(projectListCmd)
 	userCmd.AddCommand(userInfoCmd)
 	juliaCmd.AddCommand(juliaInstallCmd)
 	runCmd.AddCommand(runSetupCmd)
 	gitCredentialCmd.AddCommand(gitCredentialHelperCmd, gitCredentialGetCmd, gitCredentialStoreCmd, gitCredentialEraseCmd, gitCredentialSetupCmd)
 
-	rootCmd.AddCommand(authCmd, jobCmd, datasetCmd, projectCmd, userCmd, juliaCmd, cloneCmd, pushCmd, fetchCmd, pullCmd, runCmd, gitCredentialCmd, updateCmd)
+	rootCmd.AddCommand(authCmd, jobCmd, datasetCmd, registryCmd, projectCmd, userCmd, juliaCmd, cloneCmd, pushCmd, fetchCmd, pullCmd, runCmd, gitCredentialCmd, updateCmd)
 }
 
 func main() {

registries.go

@@ -0,0 +1,102 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+)
+
+type Registry struct {
+	UUID         string     `json:"uuid"`
+	Name         string     `json:"name"`
+	RegistryID   int        `json:"registry_id"`
+	Owner        *string    `json:"owner"`
+	Register     bool       `json:"register"`
+	CreationDate CustomTime `json:"creation_date"`
+	PackageCount int        `json:"package_count"`
+	Description  string     `json:"description"`
+}
+
+func listRegistries(server string, verbose bool) error {
+	token, err := ensureValidToken()
+	if err != nil {
+		return fmt.Errorf("authentication required: %w", err)
+	}
+
+	url := fmt.Sprintf("https://%s/api/v1/registry/registries/descriptions", server)
+
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		return fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token.IDToken))
+	req.Header.Set("Accept", "application/json")
+
+	client := &http.Client{Timeout: 30 * time.Second}
+	resp, err := client.Do(req)
+	if err != nil {
+		return fmt.Errorf("failed to make request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(resp.Body)
+		return fmt.Errorf("API request failed (status %d): %s", resp.StatusCode, string(body))
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return fmt.Errorf("failed to read response: %w", err)
+	}
+
+	var registries []Registry
+	if err := json.Unmarshal(body, &registries); err != nil {
+		return fmt.Errorf("failed to parse response: %w", err)
+	}
+
+	if len(registries) == 0 {
+		fmt.Println("No registries found")
+		return nil
+	}
+
+	fmt.Printf("Found %d registr%s:\n\n", len(registries), pluralize(len(registries), "y", "ies"))
+
+	if verbose {
+		// Verbose mode: show all details
+		for _, registry := range registries {
+			fmt.Printf("UUID: %s\n", registry.UUID)
+			fmt.Printf("Name: %s\n", registry.Name)
+			if registry.Owner != nil {
+				fmt.Printf("Owner: %s\n", *registry.Owner)
+			} else {
+				fmt.Printf("Owner: (none)\n")
+			}
+			fmt.Printf("Register: %t\n", registry.Register)
+			fmt.Printf("Creation Date: %s\n", registry.CreationDate.Time.Format(time.RFC3339))
+			fmt.Printf("Package Count: %d\n", registry.PackageCount)
+			if registry.Description != "" {
+				fmt.Printf("Description: %s\n", registry.Description)
+			}
+			fmt.Println()
+		}
+	} else {
+		// Default mode: show only UUID and Name
+		for _, registry := range registries {
+			fmt.Printf("UUID: %s\n", registry.UUID)
+			fmt.Printf("Name: %s\n", registry.Name)
+			fmt.Println()
+		}
+	}
+
+	return nil
+}
+
+func pluralize(count int, singular, plural string) string {
+	if count == 1 {
+		return singular
+	}
+	return plural
+}