feat: add config add/list/get

To make it easier to operate on config files, adding utility commands
to interface with the config object.

cmd/aepcli/main.go

@@ -25,59 +25,77 @@ func main() {
 
 func aepcli(args []string) error {
 	var logLevel string
-	var fileOrAlias string
+	var fileAliasOrCore string
 	var additionalArgs []string
+	var headers []string
+	var pathPrefix string
+	var serverURL string
+	var configFileVar string
 	var s *service.Service
 
 	rootCmd := &cobra.Command{
 		Use:  "aepcli [host or api alias] [resource or --help]",
 		Args: cobra.MinimumNArgs(1),
 		Run: func(cmd *cobra.Command, args []string) {
-			fileOrAlias = args[0]
+			fileAliasOrCore = args[0]
 			if len(args) > 1 {
 				additionalArgs = args[1:]
 			}
 		},
 	}
 
-	var rawHeaders []string
-	var pathPrefix string
-	var serverURL string
+	configFile, err := config.DefaultConfigFile()
+	if err != nil {
+		return fmt.Errorf("unable to get default config file: %w", err)
+	}
+
 	rootCmd.Flags().SetInterspersed(false) // allow sub parsers to parse subsequent flags after the resource
-	rootCmd.PersistentFlags().StringArrayVar(&rawHeaders, "header", []string{}, "Specify headers in the format key=value")
+	rootCmd.PersistentFlags().StringArrayVar(&headers, "header", []string{}, "Specify headers in the format key=value")
 	rootCmd.PersistentFlags().StringVar(&logLevel, "log-level", "info", "Set the logging level (debug, info, warn, error)")
 	rootCmd.PersistentFlags().StringVar(&pathPrefix, "path-prefix", "", "Specify a path prefix that is prepended to all paths in the openapi schema. This will strip them when evaluating the resource hierarchy paths.")
 	rootCmd.PersistentFlags().StringVar(&serverURL, "server-url", "", "Specify a URL to use for the server. If not specified, the first server URL in the OpenAPI definition will be used.")
-
+	rootCmd.PersistentFlags().StringVar(&configFileVar, "config", "", "Path to config file")
 	rootCmd.SetArgs(args)
+
 	if err := rootCmd.Execute(); err != nil {
 		return err
 	}
 
+	if configFileVar != "" {
+		configFile = configFileVar
+	}
+
 	if err := setLogLevel(logLevel); err != nil {
 		return fmt.Errorf("unable to set log level: %w", err)
 	}
 
-	c, err := config.ReadConfig()
+	c, err := config.ReadConfigFromFile(configFile)
 	if err != nil {
 		return fmt.Errorf("unable to read config: %v", err)
 	}
 
-	if api, ok := c.APIs[fileOrAlias]; ok {
+	if fileAliasOrCore == "core" {
+		return handleCoreCommand(additionalArgs, configFile)
+	}
+
+	if api, ok := c.APIs[fileAliasOrCore]; ok {
 		cd, err := config.ConfigDir()
 		if err != nil {
-			fmt.Println(err)
-			os.Exit(1)
+			return fmt.Errorf("unable to get config directory: %w", err)
+		}
+		if filepath.IsAbs(api.OpenAPIPath) || strings.HasPrefix(api.OpenAPIPath, "http") {
+			fileAliasOrCore = api.OpenAPIPath
+		} else {
+			fileAliasOrCore = filepath.Join(cd, api.OpenAPIPath)
 		}
-		fileOrAlias = filepath.Join(cd, api.OpenAPIPath)
 		if pathPrefix == "" {
 			pathPrefix = api.PathPrefix
 		}
-		rawHeaders = append(rawHeaders, api.Headers...)
+		headers = append(headers, api.Headers...)
 		serverURL = api.ServerURL
 	}
 
-	openapi, err := openapi.FetchOpenAPI(fileOrAlias)
+	openapi, err := openapi.FetchOpenAPI(fileAliasOrCore)
 	if err != nil {
 		return fmt.Errorf("unable to fetch openapi: %w", err)
 	}
@@ -86,12 +104,12 @@ func aepcli(args []string) error {
 		return fmt.Errorf("unable to get service definition: %w", err)
 	}
 
-	headers, err := parseHeaders(rawHeaders)
+	headersMap, err := parseHeaders(headers)
 	if err != nil {
 		return fmt.Errorf("unable to parse headers: %w", err)
 	}
 
-	s = service.NewService(*serviceDefinition, headers)
+	s = service.NewService(*serviceDefinition, headersMap)
 
 	result, err := s.ExecuteCommand(additionalArgs)
 	if err != nil {
@@ -130,3 +148,111 @@ func setLogLevel(levelAsString string) error {
 	slog.SetLogLoggerLevel(level)
 	return nil
 }
+
+func handleCoreCommand(additionalArgs []string, configFile string) error {
+	var openAPIPath string
+	var overwrite bool
+	var api config.API
+	var serverURL string
+	var headers []string
+	var pathPrefix string
+
+	coreCmd := &cobra.Command{
+		Use:   "core",
+		Short: "Core API management commands",
+	}
+
+	configCmd := &cobra.Command{
+		Use:   "config",
+		Short: "Manage core API configurations",
+	}
+
+	addCmd := &cobra.Command{
+		Use:   "add [name]",
+		Short: "Add a new core API configuration",
+		Args:  cobra.ExactArgs(1),
+		Run: func(cmd *cobra.Command, args []string) {
+			api = config.API{
+				Name:        args[0],
+				OpenAPIPath: openAPIPath,
+				ServerURL:   serverURL,
+				Headers:     headers,
+				PathPrefix:  pathPrefix,
+			}
+			if err := config.WriteAPIWithName(configFile, api, overwrite); err != nil {
+				fmt.Printf("Error writing API config: %v\n", err)
+				os.Exit(1)
+			}
+			fmt.Printf("Core API configuration '%s' added successfully\n", args[0])
+		},
+	}
+
+	addCmd.Flags().StringVar(&openAPIPath, "openapi-path", "", "Path to OpenAPI specification file")
+	addCmd.Flags().StringArrayVar(&headers, "header", []string{}, "Headers in format key=value")
+	addCmd.Flags().StringVar(&serverURL, "server-url", "", "Server URL")
+	addCmd.Flags().StringVar(&pathPrefix, "path-prefix", "", "Path prefix")
+	addCmd.Flags().BoolVar(&overwrite, "overwrite", false, "Overwrite existing configuration")
+
+	readCmd := &cobra.Command{
+		Use:   "get [name]",
+		Short: "Get an API configuration",
+		Args:  cobra.ExactArgs(1),
+		Run: func(cmd *cobra.Command, args []string) {
+			cfg, err := config.ReadConfigFromFile(configFile)
+			if err != nil {
+				fmt.Printf("Error reading config file: %v\n", err)
+				os.Exit(1)
+			}
+
+			api, exists := cfg.APIs[args[0]]
+			if !exists {
+				fmt.Printf("No API configuration found with name '%s'\n", args[0])
+				os.Exit(1)
+			}
+
+			fmt.Printf("Name: %s\n", api.Name)
+			fmt.Printf("OpenAPI Path: %s\n", api.OpenAPIPath)
+			fmt.Printf("Server URL: %s\n", api.ServerURL)
+			fmt.Printf("Headers: %v\n", api.Headers)
+			fmt.Printf("Path Prefix: %s\n", api.PathPrefix)
+		},
+	}
+
+	listCmd := &cobra.Command{
+		Use:   "list",
+		Short: "List all API configurations",
+		Args:  cobra.NoArgs,
+		Run: func(cmd *cobra.Command, args []string) {
+			apis, err := config.ListAPIs(configFile)
+			if err != nil {
+				fmt.Printf("Error listing APIs: %v\n", err)
+				os.Exit(1)
+			}
+
+			if len(apis) == 0 {
+				fmt.Println("No API configurations found")
+				return
+			}
+
+			for _, api := range apis {
+				fmt.Printf("Name: %s\n", api.Name)
+				fmt.Printf("OpenAPI Path: %s\n", api.OpenAPIPath)
+				fmt.Printf("Server URL: %s\n", api.ServerURL)
+				fmt.Printf("Headers: %v\n", api.Headers)
+				fmt.Printf("Path Prefix: %s\n", api.PathPrefix)
+				fmt.Println()
+			}
+		},
+	}
+
+	configCmd.AddCommand(addCmd)
+	configCmd.AddCommand(readCmd)
+	configCmd.AddCommand(listCmd)
+	coreCmd.AddCommand(configCmd)
+
+	coreCmd.SetArgs(additionalArgs)
+	if err := coreCmd.Execute(); err != nil {
+		return fmt.Errorf("error executing core command: %v", err)
+	}
+	return nil
+}

docs/userguide.md

@@ -103,8 +103,19 @@ headers = ["X-API-TOKEN=123", "X-API-CLIENT=aepcli"]
 ```
 
 If you would like to use aepcli as your recommend command-line interface for
-your API, you can provide a simple script to write the appropriate configuration
-to your configuration file.
+your API, you can provide a one-liner to add the configuration to your
+configuration file:
+
+```bash
+aepcli core config add bookstore --openapi-path=$HOME/workspace/aepc/example/bookstore/v1/bookstore_openapi.json
+```
+
+You can also list and read all of the configurations you have added:
+
+```bash
+aepcli core config list
+aepcli core config get bookstore
+```
 
 ### specifying resource parent ids
 
@@ -167,6 +178,10 @@ lists are specified as a comma-separated list:
 aepcli bookstore book-edition create --book "peter-pan" --publisher "consistent-house" --tags "fantasy,childrens"
 ```
 
+### core commands
+
+See `aepcli core --help` for commands for aepcli (e.g. config)
+
 ## OpenAPI Definitions
 
 ### OAS definitions supported

internal/config/config.go

@@ -1,7 +1,9 @@
 package config
 
 import (
+	"errors"
 	"fmt"
+	"log/slog"
 	"os"
 	"path/filepath"
 
@@ -20,19 +22,16 @@ type API struct {
 	PathPrefix  string
 }
 
-// ReadConfig reads the configuration from the default configuration file.
-func ReadConfig() (*Config, error) {
-	configDir, err := ConfigDir()
-	if err != nil {
+func ReadConfigFromFile(file string) (*Config, error) {
+	// Check if file exists first
+	if _, err := os.Stat(file); os.IsNotExist(err) {
+		slog.Error("Config file does not exist", "file", file)
 		return nil, err
 	}
-	return ReadConfigFromFile(filepath.Join(configDir, "config.toml"))
-}
 
-func ReadConfigFromFile(filename string) (*Config, error) {
 	var c Config
-	if _, err := toml.DecodeFile(filename, &c); err != nil {
-		return nil, fmt.Errorf("unable to decode config file at %v: %v", filename, err)
+	if _, err := toml.DecodeFile(file, &c); err != nil {
+		return nil, fmt.Errorf("unable to decode config file at %v: %v", file, err)
 	}
 	return &c, nil
 }
@@ -44,3 +43,72 @@ func ConfigDir() (string, error) {
 	}
 	return filepath.Join(homeDir, ".config", "aepcli"), nil
 }
+
+// WriteAPIWithName writes a new API configuration to the specified config file.
+func WriteAPIWithName(file string, api API, overwrite bool) error {
+	if api.Name == "" {
+		return errors.New("api name cannot be empty")
+	}
+
+	// Read existing config
+	cfg, err := ReadConfigFromFile(file)
+	if err != nil {
+		// If file doesn't exist yet, initialize new config
+		if errors.Is(err, os.ErrNotExist) {
+			cfg = &Config{
+				APIs: make(map[string]API),
+			}
+		} else {
+			return fmt.Errorf("failed to read existing config: %w", err)
+		}
+	}
+
+	// Check if API already exists
+	if _, exists := cfg.APIs[api.Name]; exists && !overwrite {
+		return fmt.Errorf("API with name '%s' already exists. Set --overwrite to true to overwrite", api.Name)
+	}
+
+	// Add/update API in config
+	cfg.APIs[api.Name] = api
+
+	// Ensure parent directory exists
+	parentDir := filepath.Dir(file)
+	if err := os.MkdirAll(parentDir, 0755); err != nil {
+		return fmt.Errorf("failed to create parent directory for config file: %w", err)
+	}
+
+	// Open file for writing
+	f, err := os.OpenFile(file, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
+	if err != nil {
+		return fmt.Errorf("failed to open config file: %w", err)
+	}
+	defer f.Close()
+
+	// Encode and write config
+	if err := toml.NewEncoder(f).Encode(cfg); err != nil {
+		return fmt.Errorf("failed to write config file: %w", err)
+	}
+	return nil
+}
+
+func DefaultConfigFile() (string, error) {
+	dir, err := ConfigDir()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(dir, "config.toml"), nil
+}
+
+// ListAPIs returns a slice of all API configurations in the specified config file.
+func ListAPIs(file string) ([]API, error) {
+	cfg, err := ReadConfigFromFile(file)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read config file: %w", err)
+	}
+
+	apis := make([]API, 0, len(cfg.APIs))
+	for _, api := range cfg.APIs {
+		apis = append(apis, api)
+	}
+	return apis, nil
+}