package data

import (
	"encoding/json"
	"os"

	"github.com/google/uuid"
)

type (
	Service struct {
		Softwares []Software
	}

	Software struct {
		UUID           string
		Name           string         `json:"name"`
		Description    string         `json:"description"`
		Version        string         `json:"version"`
		IconURL        string         `json:"icon_url"`
		ScreenshotURLs []string       `json:"screenshot_urls"`
		DownloadLinks  []DownloadLink `json:"download_links"`
	}

	DownloadLink struct {
		OS   string `json:"os"`
		Arch string `json:"arch"`
		URL  string `json:"url"`
	}

	document struct {
		Softwares []Software `json:"softwares"`
	}
)

func Load(path string) Service {
	f, err := os.OpenFile(path, os.O_RDONLY, 0744)
	if err != nil {
		panic("failed to open data file: " + err.Error())
	}
	defer f.Close()

	var s document
	d := json.NewDecoder(f)
	err = d.Decode(&s)
	if err != nil {
		panic("failed to parse data file: " + err.Error())
	}
	s = generateUUID(s)
	return Service{
		Softwares: s.Softwares,
	}
}

func generateUUID(d document) document {
	for i, s := range d.Softwares {
		s.UUID = uuid.New().String()
		d.Softwares[i] = s
	}
	return d
}