package config

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

type Config struct {
	ProjectName string         `json:"project"`
	Docker      DockerConfig   `json:"docker"`
	Services    ServicesConfig `json:"services"`
}

// DockerConfig contains the configuration for
// docker specific components.
type DockerConfig struct {
	Network DockerNetworkConfig `json:"network"`
}

// DockerNetworkStackArgs contains arguments for
// creating the DockerNetworkStack
type DockerNetworkConfig struct {
	Name   string `json:"name"`
	Subnet string `json:"subnet"`
	Driver string `json:"driver"`
}

// Services contains a list of
// services and their configuration
type ServicesConfig struct {
	Traefik TraefikConfig `json:"traefik"`
}

// TraefikConfig contains configuration for the Traefik container.
type TraefikConfig struct {
	CheckNewVersion    bool   `json:"checkNewVersion"`
	SendAnonymousUsage bool   `json:"sendAnonymousUsage"`
	Version            string `json:"version"`
	ContainerIp        string `json:"containerIp"`
	LogLevel           string `json:"logLevel"`
}

// NewConfig creates a new Config value from a given
// JSON file.
func NewConfig(file string) (Config, error) {
	var c Config
	var err error

	data, err := ioutil.ReadFile(file)
	if err != nil {
		return c, fmt.Errorf("unable to read data from %s...\n%v", file, err)
	}

	if err = json.Unmarshal(data, &c); err != nil {
		return c, fmt.Errorf("unable to decode the JSON configuration from %s...\n%v", file, err)
	}

	return c, nil
}