first commit

config/config.go

@@ -0,0 +1,86 @@
+package config
+
+import (
+	"errors"
+	"log/slog"
+	"os"
+
+	"gopkg.in/yaml.v3"
+)
+
+const (
+	LoggingOutputJson = "JSON"
+	LoggingOutputText = "TEXT"
+)
+
+type config struct {
+	Credentials          Credentials   `yaml:"credentials"`
+	Directory            string        `yaml:"directory"`
+	WatchDebounceSeconds int           `yaml:"watch_debounce_seconds"`
+	LoggingConfig        LoggingConfig `yaml:"logging" json:"logging"`
+}
+
+type LoggingConfig struct {
+	Level string
+}
+
+func (lc LoggingConfig) ToLogger() *slog.Logger {
+	var level slog.Level
+	if err := level.UnmarshalText([]byte(lc.Level)); err != nil {
+		level = slog.LevelInfo
+	}
+
+	leveler := new(slog.LevelVar)
+	leveler.Set(level)
+	return slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
+		Level: leveler,
+	}))
+}
+
+type Credentials struct {
+	SecretKey string `yaml:"secret_key"`
+	TTDApiKey string `yaml:"ttd_api_key"`
+}
+
+type Config struct {
+	Credentials          Credentials
+	Directory            string
+	WatchDebounceSeconds int
+	Logger               *slog.Logger
+}
+
+func LoadConfig(filePath string) (*Config, error) {
+	// Set up slog as the main logger with default JSON handler
+	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
+	slog.SetDefault(logger)
+
+	data, err := os.ReadFile(filePath)
+	if err != nil {
+		slog.Error("Failed to read configuration file", "error", err, "file", filePath)
+		return nil, err
+	}
+
+	var cfg config
+	if err := yaml.Unmarshal(data, &cfg); err != nil {
+		slog.Error("Failed to unmarshal YAML configuration", "error", err)
+		return nil, err
+	}
+
+	c := new(Config)
+	c.Logger = cfg.LoggingConfig.ToLogger()
+
+	if cfg.Credentials.SecretKey == "" || cfg.Credentials.TTDApiKey == "" {
+		c.Logger.Error("Missing required credentials in configuration")
+		return nil, errors.New("missing required credentials in configuration")
+	}
+	c.Credentials = cfg.Credentials
+
+	c.Directory = cfg.Directory
+	c.WatchDebounceSeconds = cfg.WatchDebounceSeconds
+	// Log the selected provider data
+	slog.Info("Successfully loaded configuration",
+		"directory", c.Directory,
+		"watch_debounce_seconds", c.WatchDebounceSeconds,
+	)
+	return c, nil
+}