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|
package config
import (
"fmt"
"os"
"strings"
"github.com/joho/godotenv"
)
var BotConfig *Config
type Config struct {
DiscordToken string
DataSourceName string
DatabaseDriver string
ConfiguredChannels struct {
PoketwoSpawns []string
}
}
var validDBDrivers = map[string]bool{
"sqlite": true,
"postgres": true,
"mysql": true,
"mssql": true,
}
func Load() error {
if err := godotenv.Load(); err != nil {
return fmt.Errorf("loading env file: %w", err)
}
config := &Config{}
// Basic string variables
requiredVars := map[string]*string{
"DISCORD_BOT_TOKEN": &config.DiscordToken,
"DSN": &config.DataSourceName,
"DATABASE_DRIVER": &config.DatabaseDriver,
}
for envKey, configVar := range requiredVars {
value, err := getEnv(envKey)
if err != nil {
return fmt.Errorf("getting %s: %w", envKey, err)
}
*configVar = value
}
channels, err := getEnvStringSlice("POKETWO_CHANNELS")
if err != nil {
return fmt.Errorf("getting POKETWO_CHANNELS: %w", err)
}
config.ConfiguredChannels.PoketwoSpawns = channels
if err := validateConfig(config); err != nil {
return fmt.Errorf("validating config: %w", err)
}
BotConfig = config
return nil
}
func validateConfig(config *Config) error {
if config.DiscordToken == "" {
return fmt.Errorf("discord token not found")
}
if config.DataSourceName == "" {
return fmt.Errorf("data source name not found")
}
if config.DatabaseDriver == "" {
return fmt.Errorf("database driver not found")
}
if !validDBDrivers[strings.ToLower(config.DatabaseDriver)] {
return fmt.Errorf("invalid database driver: %s", config.DatabaseDriver)
}
return nil
}
func getEnv(key string) (string, error) {
value, exists := os.LookupEnv(key)
if !exists {
return "", fmt.Errorf("environment variable %s not found", key)
}
return strings.TrimSpace(value), nil
}
func getEnvStringSlice(key string) ([]string, error) {
value, err := getEnv(key)
if err != nil {
return nil, err
}
if value == "" {
return []string{}, nil
}
items := strings.Split(value, ",")
// Trim spaces from each item
for i, item := range items {
items[i] = strings.TrimSpace(item)
}
return items, nil
}
// Future implementation for getting other types of environment variables
// func getEnvInt(key string) (int, error) {
// value, err := getEnv(key)
// if err != nil {
// return 0, err
// }
// return strconv.Atoi(value)
// }
// func getEnvBool(key string) (bool, error) {
// value, err := getEnv(key)
// if err != nil {
// return false, err
// }
// return strconv.ParseBool(value)
// }
|
