Use cobra to turn linkctl into a proper cli

Most commands are currently placeholders but version and db init work

cmd/linkctl/config.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+func configPreRun(cmd *cobra.Command, args []string) error {
+	return setupDb()
+}
+
+func configPostRun(cmd *cobra.Command, args []string) error {
+	return cleanupDb()
+}
+
+func configSetHandler(cmd *cobra.Command, args []string) {
+	fmt.Println("Not implemented")
+}
+
+func configGetHandler(cmd *cobra.Command, args []string) {
+	fmt.Println("Not implemented")
+}
+
+func configListHandler(cmd *cobra.Command, args []string) {
+	fmt.Println("Not implemented")
+}

cmd/linkctl/db.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"fmt"
+
+	"git.omicron.one/omicron/linkshare/internal/database"
+	"git.omicron.one/omicron/linkshare/internal/util"
+	"git.omicron.one/omicron/linkshare/internal/version"
+	"github.com/spf13/cobra"
+)
+
+func openDB() (*database.DB, error) {
+	paths, err := util.FindDirectories(dbPath)
+	if err != nil {
+		return nil, err
+	}
+	return database.Open(paths.DatabaseFile)
+}
+
+func dbPreRun(cmd *cobra.Command, args []string) error {
+	return setupDb()
+}
+
+func dbPostRun(cmd *cobra.Command, args []string) error {
+	return cleanupDb()
+}
+
+func dbInitHandler(cmd *cobra.Command, args []string) {
+	err := db.Initialize(paths.SchemaDir)
+	if err == database.ErrAlreadyInitialized {
+		fmt.Printf("Database %q is already initialized\n", dbPath)
+		return
+	}
+	if err == nil {
+		fmt.Printf("Initialized database %q with schema version %d\n", dbPath, version.SchemaVersion)
+		return
+	}
+
+	fmt.Printf("Failed to initialize database %q: %v\n", dbPath, err)
+}
+
+func dbBackupHandler(cmd *cobra.Command, args []string) {
+	fmt.Println("Not implemented")
+}
+
+func dbUpdateHandler(cmd *cobra.Command, args []string) {
+	fmt.Println("Not implemented")
+}

cmd/linkctl/main.go

@@ -2,17 +2,156 @@ package main
 
 import (
 	"fmt"
+	"os"
 
+	"git.omicron.one/omicron/linkshare/internal/database"
 	"git.omicron.one/omicron/linkshare/internal/util"
+	"git.omicron.one/omicron/linkshare/internal/version"
+	"github.com/spf13/cobra"
 )
 
-func main() {
-	paths, err := util.FindDirectories("")
+var (
+	dbPath    string
+	verbosity int
+)
+
+var (
+	paths *util.AppPaths
+	db    *database.DB
+)
+
+func exitIfError(err error) {
 	if err != nil {
 		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func setupPaths() error {
+	if paths != nil {
+		return nil
+	}
+	paths_, err := util.FindDirectories(dbPath)
+	if err != nil {
+		return err
+	}
+	paths = paths_
+	return nil
+}
+
+func setupDb() error {
+	if db != nil {
+		return nil
+	}
+	err := setupPaths()
+	if err != nil {
+		return nil
 	}
 
-	fmt.Println("Paths:")
-	fmt.Println("  Schema:", paths.SchemaDir)
-	fmt.Println("  Database:", paths.DatabaseFile)
+	db_, err := database.Open(dbPath)
+	if err != nil {
+		return nil
+	}
+	db = db_
+	return nil
+}
+
+func cleanupDb() error {
+	if db != nil {
+		err := db.Close()
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func main() {
+	rootCmd := &cobra.Command{
+		Use:   "linkctl",
+		Short: "LinkShare CLI tool",
+		Long:  `Command line tool to manage your self-hosted LinkShare service.`,
+		Run: func(cmd *cobra.Command, args []string) {
+			cmd.Help()
+		},
+	}
+	rootCmd.CompletionOptions.DisableDefaultCmd = true
+
+	rootCmd.PersistentFlags().StringVarP(&dbPath, "db", "d", "", "Database file path")
+	rootCmd.PersistentFlags().CountVarP(&verbosity, "verbose", "v", "Increase verbosity level")
+
+	configCmd := &cobra.Command{
+		Use:   "config",
+		Short: "Configuration commands",
+		Run: func(cmd *cobra.Command, args []string) {
+			cmd.Help()
+		},
+		PersistentPreRunE:  configPreRun,
+		PersistentPostRunE: configPostRun,
+	}
+
+	configSetCmd := &cobra.Command{
+		Use:   "set",
+		Short: "Set a configuration value",
+		Run:   configSetHandler,
+	}
+
+	configGetCmd := &cobra.Command{
+		Use:   "get",
+		Short: "Get a configuration value",
+		Run:   configGetHandler,
+	}
+
+	configListCmd := &cobra.Command{
+		Use:   "list",
+		Short: "List all configuration values",
+		Run:   configListHandler,
+	}
+
+	configCmd.AddCommand(configSetCmd, configGetCmd, configListCmd)
+
+	dbCmd := &cobra.Command{
+		Use:   "db",
+		Short: "Database commands",
+		Run: func(cmd *cobra.Command, args []string) {
+			cmd.Help()
+		},
+		PersistentPreRunE:  dbPreRun,
+		PersistentPostRunE: dbPostRun,
+	}
+
+	dbInitCmd := &cobra.Command{
+		Use:   "init",
+		Short: "Initialize the database",
+		Run:   dbInitHandler,
+	}
+
+	dbBackupCmd := &cobra.Command{
+		Use:   "backup",
+		Short: "Backup the database",
+		Run:   dbBackupHandler,
+	}
+
+	dbUpdateCmd := &cobra.Command{
+		Use:   "update",
+		Short: "Update the database schema",
+		Run:   dbUpdateHandler,
+	}
+
+	dbCmd.AddCommand(dbInitCmd, dbBackupCmd, dbUpdateCmd)
+
+	versionCmd := &cobra.Command{
+		Use:   "version",
+		Short: "Display version information",
+		Run: func(cmd *cobra.Command, args []string) {
+			version.Print()
+		},
+	}
+
+	rootCmd.AddCommand(configCmd, dbCmd, versionCmd)
+
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
 }