Add updater notes to documentation

1 files changed, 19 insertions, 18 deletions

diff --git a/tools/updater/main.go b/tools/updater/main.go
index 1b2cc4c..deaad87 100644
--- a/tools/updater/main.go
+++ b/tools/updater/main.go
@@ -5,7 +5,7 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
-	"os"
+	"runtime"
 	"strings"
 )
 
@@ -13,32 +13,35 @@ func main() {
 	helpFlag := flag.Bool("help", false, "Show help information")
 	verboseFlag := flag.Bool("verbose", false, "Print more information")
 	repoFlag := flag.String("repo", "https://neueland.iserlohn-fortress.net/smolbote/downloads", "Repository path")
+	platformFlag := flag.String("platform", runtime.GOOS, "Platform")
 	dryRunFlag := flag.Bool("dry-run", false, "Dry run: only check files, do not download")
 
 	flag.Parse()
 
+	manifestPath := fmt.Sprintf("%s/%s-sha512.txt", *repoFlag, *platformFlag)
+	repoPath := fmt.Sprintf("%s/%s/", *repoFlag, *platformFlag)
+
 	// help flag --> show usage and exit
 	if *helpFlag {
 		fmt.Println("Usage:")
 		flag.PrintDefaults()
-		os.Exit(0)
-	}
 
-	manifestPath := *repoFlag + "/windows-sha512.txt"
-	repoPath := *repoFlag + "/windows/"
-
-	if *verboseFlag {
-		fmt.Println("repoFlag =", *repoFlag)
-		fmt.Println("manifest =", manifestPath)
-		fmt.Println("repoPath =", repoPath)
+		fmt.Println("Paths:")
+		fmt.Println("  manifest    ", manifestPath)
+		fmt.Println("  repository  ", repoPath)
+		return
 	}
 
 	response, err := http.Get(manifestPath)
 	if err != nil {
 		panic(err)
+	} else if response.StatusCode != 200 {
+		fmt.Printf("Could not get manifest: %s\n", response.Status)
+		return
 	}
 	defer response.Body.Close()
 
+	// read through manifest
 	scanner := bufio.NewScanner(response.Body)
 	for scanner.Scan() {
 		s := strings.Split(scanner.Text(), "  ")
@@ -46,16 +49,14 @@ func main() {
 		filepath := s[1]
 		checksum := s[0]
 
-		state, err := checkFile(filepath, checksum)
-		if err != nil {
+		if same, err := checkFile(filepath, checksum); err != nil {
 			panic(err)
-		}
-
-		if state {
-			fmt.Printf("[%s] passed\n", filepath)
 		} else {
-			fmt.Printf("[%s] missing or mismatching\n", filepath)
-			if !*dryRunFlag {
+			if *verboseFlag {
+				fmt.Printf("[%s]: %t\n", filepath, same)
+			}
+
+			if !same && !*dryRunFlag {
 				downloadFile(filepath, repoPath+filepath)
 			}
 		}