package main

import (
	"fmt"

	"github.com/spf13/viper"
	"yves-biener.de/wish-serve/internal/serve"
)

func createDefaultConfig() {
	viper.SetDefault("host", "127.0.0.1")
	viper.SetDefault("port", "8022")
	viper.SetDefault("users", map[string]string{})
	viper.SetDefault("key.dir", ".ssh")
	viper.SetDefault("key.name", "ssh_ed25519_key")
	viper.SetDefault("app.name", "echo")
	viper.SetDefault("app.args", []string{"Hello", "World"})
}

// Load the configuration file from any of the following locations (loading the
// first one with an existing configuration):
//   - `$HOME/.config/serve/config.yml`
//   - `./config.yml`
//
// If no configuration is found in any of the defined locations the default
// values of `createDefaultConfig` will remain unchanged.
//
// Invalid configuration files will cause a fatal error causing the application
// to panic.
func loadConfig() {
	viper.SetConfigName("config")
	viper.SetConfigType("yml")
	viper.AddConfigPath("$HOME/.config/serve")
	viper.AddConfigPath(".")
	if err := viper.ReadInConfig(); err != nil {
		if _, ok := err.(viper.ConfigFileNotFoundError); !ok {
			panic(fmt.Errorf("fatal error config file: %w", err))
		}
	}
}

func main() {
	createDefaultConfig()
	loadConfig()

	serve.Serve(
		viper.GetString("host"),
		viper.GetString("port"),
		fmt.Sprintf("%s/%s", viper.GetString("key.dir"), viper.GetString("key.name")),
		viper.GetStringMapString("users"),
		viper.GetString("app.name"),
		viper.GetStringSlice("app.args"),
	)
}