Replace env vars with toml config

internal/config/config.go

@@ -0,0 +1,90 @@
+package config
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/BurntSushi/toml"
+)
+
+type Config struct {
+	Server   ServerConfig   `toml:"server"`
+	Database DatabaseConfig `toml:"database"`
+	AWS      AWSConfig      `toml:"aws"`
+	Yandex   YandexConfig   `toml:"yandex"`
+	Telegram TelegramConfig `toml:"telegram"`
+}
+
+type ServerConfig struct {
+	Port                 int `toml:"port"`
+	ShutdownTimeout      int `toml:"shutdown_timeout"`
+	ForceShutdownTimeout int `toml:"force_shutdown_timeout"`
+}
+
+type DatabaseConfig struct {
+	Path string `toml:"path"`
+}
+
+type AWSConfig struct {
+	Region     string `toml:"region"`
+	AccessKey  string `toml:"access_key_id"`
+	SecretKey  string `toml:"secret_access_key"`
+	BucketName string `toml:"bucket_name"`
+	Endpoint   string `toml:"endpoint"`
+}
+
+type YandexConfig struct {
+	APIKey   string `toml:"api_key"`
+	FolderID string `toml:"folder_id"`
+}
+
+type TelegramConfig struct {
+	BotToken      string `toml:"bot_token"`
+	UpdateTimeout int    `toml:"update_timeout"`
+}
+
+// DefaultConfig returns a Config with default values
+func DefaultConfig() *Config {
+	return &Config{
+		Server: ServerConfig{
+			Port:                 8080,
+			ShutdownTimeout:      5,
+			ForceShutdownTimeout: 20,
+		},
+		Database: DatabaseConfig{
+			Path: "data/transcriber.db",
+		},
+		AWS: AWSConfig{
+			Region:     "ru-central1",
+			AccessKey:  "",
+			SecretKey:  "",
+			BucketName: "",
+			Endpoint:   "",
+		},
+		Yandex: YandexConfig{
+			APIKey:   "",
+			FolderID: "",
+		},
+		Telegram: TelegramConfig{
+			BotToken:      "",
+			UpdateTimeout: 10,
+		},
+	}
+}
+
+// LoadConfig loads configuration from a TOML file
+func LoadConfig(path string) (*Config, error) {
+	// Check if file exists
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		return nil, fmt.Errorf("config file not found: %s", path)
+	}
+
+	config := DefaultConfig()
+
+	// Load configuration from file
+	if _, err := toml.DecodeFile(path, &config); err != nil {
+		return nil, fmt.Errorf("failed to decode config file: %w", err)
+	}
+
+	return config, nil
+}