MartinHeinz/go-github-app

package config

import (
    "fmt"
    "github.com/google/go-github/v41/github"
    "github.com/spf13/viper"
)

// Config is global object that holds all application level variables.
var Config appConfig

type appConfig struct {
    // the server port. Defaults to 8080
    ServerPort int `mapstructure:"server_port"`
    // GitHub API client
    GitHubClient        *github.Client
    GitHubWebhookSecret string `mapstructure:"github_webhook_secret"`
}

// LoadConfig loads config from files
func LoadConfig(configPaths ...string) error {
    v := viper.New()
    v.SetConfigName("server")
    v.SetConfigType("yaml")
    v.SetEnvPrefix("go_github_app")
    v.AutomaticEnv()

    v.SetDefault("server_port", 8080)

    for _, path := range configPaths {
        v.AddConfigPath(path)
    }
    if err := v.ReadInConfig(); err != nil {
        return fmt.Errorf("failed to read the configuration file: %s", err)
    }
    return v.Unmarshal(&Config)
}