Initial project

internal/cli/config/init.go

@@ -0,0 +1,96 @@
+/*
+Copyright © 2026 Craig Williams <craig@avsdev.uk>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+package config
+
+import (
+	"errors"
+	"fmt"
+	"log/slog"
+	"os"
+
+	"git.avsdev.uk/Go/job-search/internal/config"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+func commandInit() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "init [config_path]",
+		Args:  cobra.MatchAll(cobra.MinimumNArgs(0), cobra.MaximumNArgs(1)),
+		Short: "Create an empty configuration file",
+		PersistentPreRun: func(cmd *cobra.Command, args []string) {
+			slog.Debug("config.init.PersistentPreRun")
+		},
+		PersistentPostRun: func(cmd *cobra.Command, args []string) {
+			slog.Debug("config.init.PersistentPostRun")
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			slog.Debug("config.init.Run")
+
+			if err := cobra.MinimumNArgs(0)(cmd, args); err != nil {
+				return err
+			}
+			if err := cobra.MaximumNArgs(1)(cmd, args); err != nil {
+				return err
+			}
+
+			cfgFile, _ := cmd.Flags().GetString("config")
+			if cfgFile != "" {
+				// Use config file from the flag.
+				viper.SetConfigFile(cfgFile)
+			} else {
+				// Search config in /etc or local directory.
+				viper.AddConfigPath(config.EtcConfigPath)
+				viper.AddConfigPath(".")
+				viper.SetConfigName("config")
+			}
+
+			err := viper.ReadInConfig()
+			if err == nil {
+				return errors.New("configuration file already exists")
+			}
+
+			_, ok := err.(viper.ConfigFileNotFoundError)
+			if !errors.Is(err, os.ErrNotExist) && !ok {
+				// Config file was found but another error was produced
+				return err
+			}
+
+			// Load default configuration
+			config.LoadDefaultConfig()
+
+			if viper.ConfigFileUsed() == "" {
+				viper.SetConfigFile(config.EtcConfigPath + "/config.yaml")
+			}
+
+			fmt.Print(
+				"writing default configuration to file: " +
+					viper.ConfigFileUsed() +
+					"\n")
+
+			if err := viper.WriteConfig(); err != nil {
+				return err
+			}
+			return nil
+		},
+		Annotations: map[string]string{
+			"no_config":    "1",
+			"terminal_log": "1",
+		},
+	}
+	return cmd
+}