package main import ( "log" "os" "os/user" "path" "path/filepath" "github.com/kkyr/fig" ) // Configurations relating to HTTP server. type HTTPConfig struct { BindAddr string `fig:"bind_addr"` Port uint `fig:"port"` Debug bool `fig:"debug"` APIKey string `fig:"api_key"` Enabled bool `fig:"enabled"` } // Configuration Structure. type Config struct { HTTP HTTPConfig `fig:"http"` MidiRouters []*MidiRouter `fig:"midi_routers"` } // Load the configuration. func (a *App) ReadConfig() { usr, err := user.Current() if err != nil { log.Fatal(err) } // Configuration paths. localConfig, _ := filepath.Abs("./config.yaml") homeDirConfig := usr.HomeDir + "/.config/midi-request-trigger/config.yaml" etcConfig := "/etc/midi-request-trigger/config.yaml" // Determine which configuration to use. var configFile string if _, err := os.Stat(app.flags.ConfigPath); err == nil && app.flags.ConfigPath != "" { configFile = app.flags.ConfigPath } else if _, err := os.Stat(localConfig); err == nil { configFile = localConfig } else if _, err := os.Stat(homeDirConfig); err == nil { configFile = homeDirConfig } else if _, err := os.Stat(etcConfig); err == nil { configFile = etcConfig } else { log.Println("Unable to find a configuration file.") } // Load the configuration file. config := &Config{ HTTP: HTTPConfig{ BindAddr: "", Port: 34936, Debug: true, Enabled: false, }, } // Load configuration. filePath, fileName := path.Split(configFile) err = fig.Load(config, fig.File(fileName), fig.Dirs(filePath), ) if err != nil { app.config = config log.Printf("Error parsing configuration: %s\n", err) return } // Flag Overrides. if app.flags.HTTPBind != "" { config.HTTP.BindAddr = app.flags.HTTPBind } if app.flags.HTTPPort != 0 { config.HTTP.Port = app.flags.HTTPPort } // Set global config structure. app.config = config }