package api

import (
	"encoding/json"
	"io/ioutil"
)

// Each configuration should represent a specifc domain.
// A domain can have multiple hostnames, and the hostnames
// that should be automaticall updated are in Hostnames.
// If the root domain is to be managed, an empty hostname
// should be added to the Hostnames slice.
//
// The interval is the polling time (in seconds) for
// daemon mode.
type Config struct {
	Dev       bool     `json:"dev"`
	Domain    string   `json:"domain"`
	Hostnames []string `json:"hostnames"`
	Interval  int      `json:"interval"`
	Token     string   `json:"token"`
	Username  string   `json:"username"`
}

// Loads configurations from a file. The configuration
// is stored as an array of JSON serialized Config structs.
func LoadConfigs(path string) ([]Config, error) {
	var configs struct {
		Configs []Config
	}

	file, err := ioutil.ReadFile(path)
	if err != nil {
		return nil, err
	}

	err = json.Unmarshal(file, &configs)
	if err != nil {
		return nil, err
	}

	return configs.Configs, nil
}