package domain

import (
	"encoding/json"
	"fmt"
	"os"
)

// Config struct for ~/.redmine-tree.json
type Config struct {
	Host  string `json:"host"`
	Token string `json:"token"`
}

// Load configuration from ~/.redmine-tree.json
func LoadConfig() (*Config, error) {
	homeDir, err := os.UserHomeDir()
	if err != nil {
		return nil, fmt.Errorf("could not get user home directory: %w", err)
	}

	configPath := fmt.Sprintf("%s/.redmine-tree.json", homeDir)
	file, err := os.Open(configPath)
	if err != nil {
		if os.IsNotExist(err) {
			return nil, nil // File does not exist, not an error
		}
		return nil, fmt.Errorf("could not open config file: %w", err)
	}
	defer file.Close()

	var config Config
	if err := json.NewDecoder(file).Decode(&config); err != nil {
		return nil, fmt.Errorf("could not decode config file: %w", err)
	}

	return &config, nil
}