package main

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"os"
)

func downloadMods(c UsrConfig) {
	//var c = readCfg("config.yml")
	modlist := string(c.Server.ServDir) + "/mods/mod-list.json"

	fmt.Printf("Updating mods from %s\n", modlist)

	//read from modlist
	file, err := os.Open(modlist)
	if err != nil {
		log.Fatalf("Error reading modlist: %v", err)
	}
	defer file.Close()

	// create temp directory
	tempDir, err := os.MkdirTemp("", "factoryman-*")
	if err != nil {
		log.Fatalln("Failed to create temporary directory")
	}
	defer os.RemoveAll(tempDir)

	//decode json response from api
	var modList ModList
	decoder := json.NewDecoder(file)
	if err := decoder.Decode(&modList); err != nil {
		log.Fatalf("Error reading JSON: %v", err)
	}
	// Iterate over modlist.json
	for _, mod := range modList.Mods {
		switch mod.Name {
		case "base":
			fmt.Println("Skipping base...")
		case "elevated-rails":
			fmt.Println("Skipping elevated-rails...")
		case "quality":
			fmt.Println("Skipping quality...")
		case "space-age":
			fmt.Println("Skipping space-age...")
		default:
			// query mod on modportal api
			modportalurl := fmt.Sprintf("https://mods.factorio.com/api/mods/%s", mod.Name)
			resp, err := http.Get(modportalurl)
			if err != nil {
				log.Fatalf("Error reading JSON: %v", err)
			}
			defer resp.Body.Close()

			// decode json response
			var moddata ModPortal
			if err := json.NewDecoder(resp.Body).Decode(&moddata); err != nil {
				log.Fatalf("Error reading JSON: %v", err)
			}

			// query download url for mod
			accessToken := fmt.Sprintf("?username=%s&token=%s", c.Factoryman.UserName, c.Factoryman.ApiToken)
			modDownloadUrl := fmt.Sprintf("https://mods.factorio.com%s%s", moddata.Releases[len(moddata.Releases)-1].DownloadUrl, accessToken)
			fileName := string(tempDir + "/" + moddata.Releases[len(moddata.Releases)-1].Filename)
			//download mod archive
			downloadErr := download(fileName, modDownloadUrl)
			if downloadErr != nil {
				log.Fatalf("Error downloading: %v", downloadErr)
			}
			fmt.Printf("Downloaded: %s\n", fileName)
			fmt.Printf("extracting files to %s\n", c.Server.ServDir+"/mods/")
			// extract archive to mods folder
			//exec.Command("unzip", fileName, "-d", c.Server.ServDir+"/mods/")
			_, extracterr := unzip(fileName, c.Server.ServDir+"/mods/")
			if extracterr != nil {
				log.Fatalf("Error extracting archive: %v", extracterr)
			}
		}

	}

}