wip: refactoring tui

packages/tui/internal/config/config.go

@@ -0,0 +1,65 @@
+package config
+
+import (
+	"bufio"
+	"fmt"
+	"log/slog"
+	"os"
+
+	"github.com/BurntSushi/toml"
+)
+
+type Config struct {
+	Theme    string `toml:"Theme"`
+	Provider string `toml:"Provider"`
+	Model    string `toml:"Model"`
+}
+
+// NewConfig creates a new Config instance with default values.
+// This can be useful for initializing a new configuration file.
+func NewConfig(theme, provider, model string) *Config {
+	return &Config{
+		Theme:    theme,
+		Provider: provider,
+		Model:    model,
+	}
+}
+
+// SaveConfig writes the provided Config struct to the specified TOML file.
+// It will create the file if it doesn't exist, or overwrite it if it does.
+func SaveConfig(filePath string, config *Config) error {
+	file, err := os.Create(filePath)
+	if err != nil {
+		return fmt.Errorf("failed to create/open config file %s: %w", filePath, err)
+	}
+	defer file.Close()
+
+	writer := bufio.NewWriter(file)
+
+	encoder := toml.NewEncoder(writer)
+	if err := encoder.Encode(config); err != nil {
+		return fmt.Errorf("failed to encode config to TOML file %s: %w", filePath, err)
+	}
+
+	if err := writer.Flush(); err != nil {
+		return fmt.Errorf("failed to flush writer for config file %s: %w", filePath, err)
+	}
+
+	slog.Debug("Configuration saved to file", "file", filePath)
+	return nil
+}
+
+// LoadConfig reads a Config struct from the specified TOML file.
+// It returns a pointer to the Config struct and an error if any issues occur.
+func LoadConfig(filePath string) (*Config, error) {
+	var config Config
+
+	if _, err := toml.DecodeFile(filePath, &config); err != nil {
+		if _, statErr := os.Stat(filePath); os.IsNotExist(statErr) {
+			return nil, fmt.Errorf("config file not found at %s: %w", filePath, statErr)
+		}
+		return nil, fmt.Errorf("failed to decode TOML from file %s: %w", filePath, err)
+	}
+
+	return &config, nil
+}