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config.go
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config.go
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package main
import (
"fmt"
"github.com/spf13/viper"
)
const (
appEnv = "APP_ENV"
baseURL = "BASE_URL"
webBaseURL = "WEB_BASE_URL"
port = "PORT"
spotifyClientID = "SPOTIFY_CLIENT_ID"
spotifySecretKey = "SPOTIFY_SECRET_KEY"
)
type applicationConfig struct {
AppEnv string
BaseURL string
WebBaseURL string
Port string
SpotifyClientID string
SpotifySecretKey string
}
func getApplicationConfig() *applicationConfig {
setDefaultConfig()
loadEnv()
config := &applicationConfig{
AppEnv: viper.GetString(appEnv),
BaseURL: viper.GetString(baseURL),
WebBaseURL: viper.GetString(webBaseURL),
Port: viper.GetString(port),
SpotifyClientID: viper.GetString(spotifyClientID),
SpotifySecretKey: viper.GetString(spotifySecretKey),
}
if config.SpotifyClientID == "" {
panic("Spotify client ID is missing!")
}
if config.SpotifySecretKey == "" {
panic("Spotify secret key is missing!")
}
return config
}
func setDefaultConfig() {
viper.SetDefault(appEnv, "local")
viper.SetDefault(baseURL, "http://localhost:3001")
viper.SetDefault(webBaseURL, "http://localhost:3000")
viper.SetDefault(port, "3001")
}
func loadEnv() {
viper.SetConfigFile(".env")
if err := viper.ReadInConfig(); err != nil {
panic(fmt.Sprintf("Error reading in env file: %s", err))
}
if _, ok := viper.Get(spotifyClientID).(string); !ok {
panic("Spotify client ID is missing!")
}
if _, ok := viper.Get(spotifySecretKey).(string); !ok {
panic("Spotify secret key is missing!")
}
}