config/config.go


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package config

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

type Configuration struct {
	Http struct {
		ListenAddress string `json:"listen"`
		BaseAddress   string `json:"base"`
	} `json:"http"`
	Authentication struct {
		Username string `json:"username"`
		Password string `json:"password"`
	} `json:"auth"`
}

func Must(config Configuration, err error) Configuration {
	if err != nil {
		panic(err)
	}

	return config
}

func Open(filename string) (Configuration, error) {
	file, err := os.Open(filename)
	if err != nil {
		return Configuration{}, err
	}

	buf, err := io.ReadAll(file)
	if err != nil {
		return Configuration{}, err
	}

	config := Configuration{}

	if err := json.Unmarshal(buf, &config); err != nil {
		return Configuration{}, err
	} else {
		return config, nil
	}
}