add version check

Reviewed-on: #1

README.md

@@ -9,6 +9,8 @@ A `wine` prefix with `dxvk` installed is sufficient, or you can use something li
 
 Download and extract the latest binary from the [releases](https://git.burkey.co/eburk/epochcli/releases) page, build from source yourself, or use homebrew from the macOS instructions to install.
 
+If you are an Arch Linux (or derivative) user, you can use the provided [AUR package](https://aur.archlinux.org/packages/epochcli) to install
+
 ### macOS
 
 For macOS, I've found the best way to run Wow is in a Parallels Win 11 VM. Kegworks, Codeweavers, etc crash when the game starts up and I have not found a good solution so far. Any suggestions would be welcome, see my contact information below. I currently use a Parallels VM and run the Windows version of epochcli inside the VM as an updater and launcher.
@@ -29,6 +31,8 @@ Download and extract the latest binary from the [releases](https://git.burkey.co
 
 ## Setup
 
+![ss](ss.png)
+
 1. Run `epochcli`. You will be taken through a setup process that configures the program and creates a config file at `$HOME/.config/epochcli/config.toml`
 2. You can now use `epochcli` as a standalone updater, but it can also act as a launcher based on your configuration. You can always run `epochcli -c` to redo the configuration, or edit the config file manually
 

config.go

@@ -38,7 +38,7 @@ func setupConfig(rerun bool) (*Config, error) {
 
 	_, statErr := os.Stat(cfgPath)
 	if rerun || os.IsNotExist(statErr) {
-		fmt.Println("Enter the path to your Wow directory below:")
+		fmt.Println("Enter the path to your Wow directory below. Use the full path without shortcuts like '~' (ex: /home/user/epoch):")
 		var s string
 		_, err = fmt.Scanln(&s)
 		if err != nil {
@@ -46,29 +46,23 @@ func setupConfig(rerun bool) (*Config, error) {
 		}
 		newConfig.WowDir = strings.TrimSpace(s)
 
-		for {
+		p, err := promptYesNo(fmt.Sprintf("Do you want to use epochcli to launch Wow? Select No if you plan on using a launcher tool like Lutris (y/n): "))
-			fmt.Printf("Do you want to use epochcli to launch Wow? Select No if you plan on using a launcher tool like Lutris (y/n): ")
-			_, err = fmt.Scanf("%s", &s)
 		if err != nil {
-				return nil, fmt.Errorf("unable to read input: %v", err)
+			return nil, err
 		}
-			s = strings.TrimSpace(s)
+		if p {
-
-			if s == "y" || s == "Y" {
 			newConfig.EnableLauncher = true
 
 			if runtime.GOOS == "windows" {
 				newConfig.LaunchCmd = path.Join(newConfig.WowDir, "Project-Epoch.exe")
 				exePath, err := os.Executable()
 				if err != nil {
-						fmt.Println("unable to create desktop shortcut: ", err)
+					return nil, fmt.Errorf("unable to create desktop shortcut: %v", err)
-						break
 				}
 				err = makeLink(exePath, path.Join(home, "Desktop", "Project-Epoch.lnk"))
 				if err != nil {
-						fmt.Println("unable to create desktop shortcut: ", err)
+					return nil, fmt.Errorf("unable to create desktop shortcut: %v", err)
 				}
-					break
 			} else {
 				fmt.Println("Enter your launch command to start Wow below. If you would rather configure this later in the configuration file, just press Enter")
 				fmt.Printf("> ")
@@ -82,18 +76,9 @@ func setupConfig(rerun bool) (*Config, error) {
 				if s != "" {
 					newConfig.LaunchCmd = s
 				}
-
-					break
 			}
 		}
 
-			if s == "n" || s == "N" {
-				break
-			}
-
-			fmt.Println("Please enter a valid value of either 'y' or 'n'")
-		}
-
 		err = os.MkdirAll(filepath.Join(home, ".config", configDirName), 0755)
 		if err != nil {
 			return nil, fmt.Errorf("unable to create config directory: %v", err)
@@ -120,3 +105,24 @@ func setupConfig(rerun bool) (*Config, error) {
 
 	return &newConfig, nil
 }
+
+func promptYesNo(prompt string) (bool, error) {
+	var s string
+	for {
+		fmt.Print(prompt)
+		_, err := fmt.Scanf("%s", &s)
+		if err != nil {
+			return false, fmt.Errorf("unable to read input: %v", err)
+		}
+		s := strings.TrimSpace(s)
+
+		if s == "y" || s == "Y" {
+			return true, nil
+		}
+
+		if s == "n" || s == "N" {
+			return false, nil
+		}
+		fmt.Println("Please enter a valid value of either 'y' or 'n'")
+	}
+}

main.go

@@ -16,12 +16,22 @@ import (
 )
 
 const (
-	manifestUrl      = "https://updater.project-epoch.net/api/manifest"
+	manifestUrl      = "https://updater.project-epoch.net/api/v2/manifest"
 	defaultWowPath   = "/path/to/wow"
 	defaultLaunchCmd = "not configured"
 )
 
 func main() {
+	outOfDate, err := needUpdate()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if outOfDate {
+		fmt.Println("There is a new version of epochcli, please update before running")
+		os.Exit(1)
+	}
+
 	var (
 		helpFlag       bool
 		updateOnlyFlag bool
@@ -125,13 +135,14 @@ func downloadUpdate(config *Config, force bool) (DownloadStats, error) {
 		}
 		defer outFile.Close()
 
-		resp, err := http.Get(file.URL)
+		for _, url := range []string{file.Urls.Cloudflare, file.Urls.Digitalocean, file.Urls.None} {
+			resp, err := http.Get(url)
 			if err != nil {
 				return stats, err
 			}
 			defer resp.Body.Close()
 			if resp.StatusCode != http.StatusOK {
-			return stats, fmt.Errorf("failed to download update from %s, status code: %d", file.URL, resp.StatusCode)
+				return stats, fmt.Errorf("failed to download update from %s, status code: %d", url, resp.StatusCode)
 			}
 
 			_, err = io.Copy(outFile, resp.Body)
@@ -139,6 +150,9 @@ func downloadUpdate(config *Config, force bool) (DownloadStats, error) {
 				return stats, err
 			}
 
+			break
+		}
+
 		stats.updated += 1
 	}
 

manifest.go

@@ -11,13 +11,18 @@ type File struct {
 	Hash   string `json:"Hash"`
 	Size   int    `json:"Size"`
 	Custom bool   `json:"Custom"`
-	URL    string `json:"URL"`
+	Urls   struct {
-	Origin string `json:"Origin"`
+		Digitalocean string `json:"digitalocean"`
+		Cloudflare   string `json:"cloudflare"`
+		None         string `json:"none"`
+	} `json:"Urls"`
 }
 
 type Manifest struct {
 	Version   string `json:"Version"`
+	UID       string `json:"Uid"`
 	Files     []File `json:"Files"`
+	CheckedAt string `json:"checked_at"`
 }
 
 func getManifest() (*Manifest, error) {

version.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+)
+
+const (
+	version    = "1.0.4"
+	versionUrl = "https://git.burkey.co/eburk/epochcli/raw/branch/master/version.go"
+)
+
+func needUpdate() (bool, error) {
+	resp, err := http.Get(versionUrl)
+	if err != nil {
+		return false, fmt.Errorf("unable to get version file: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return false, fmt.Errorf("failed to download update, status code: %d", resp.StatusCode)
+	}
+
+	b, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return false, fmt.Errorf("unable to read response body: %v", err)
+	}
+
+	re := regexp.MustCompile(`const version = "([\d.]+)"`)
+	ver := re.FindStringSubmatch(string(b))
+	if len(ver) < 2 || ver[1] == "" {
+		return false, fmt.Errorf("unable to find version in response")
+	}
+
+	return ver[1] != version, nil
+}