fix goreleaser and update mechanism

.goreleaser.yml

@@ -6,23 +6,16 @@ before:
 builds:
   - env:
       - CGO_ENABLED=0
-    binary: goshs
     goos:
       - linux
       - windows
       - darwin
-    goarch:
-      - "amd64"
-      - "386"
-      - "arm64"
-
 archives:
   - name_template: >-
       {{ .ProjectName }}_
       {{- .Os }}_
       {{- if eq .Arch "amd64" }}x86_64{{ else }}{{ .Arch }}{{ end }}
       {{- if .Arm }}v{{ .Arm }}{{ end }}
-
 checksum:
   name_template: 'checksums.txt'
 snapshot:
@@ -32,4 +25,4 @@ changelog:
   filters:
     exclude:
       - '^docs:'
-      - '^test:'
+      - '^test:'

update/update.go

@@ -1,10 +1,14 @@
 package update
 
 import (
+	"archive/tar"
+	"compress/gzip"
 	"context"
 	"fmt"
+	"io"
 	"net/http"
 	"runtime"
+	"strings"
 	"time"
 
 	"github.com/google/go-github/v42/github"
@@ -15,14 +19,14 @@ import (
 const (
 	owner             = "patrickhener"
 	repo              = "goshs"
-	GOSHS_WINDOWS_64  = "goshs_windows_x86_64.exe"
-	GOSHS_WINDOWS_32  = "goshs_windows_386.exe"
-	GOSHS_WINDOWS_ARM = "goshs_windows_arm64.exe"
-	GOSHS_LINUX_64    = "goshs_linux_x86_64"
-	GOSHS_LINUX_32    = "goshs_linux_386"
-	GOSHS_LINUX_ARM   = "goshs_linux_arm64"
-	GOSHS_DARWIN_64   = "goshs_darwin_x86_64"
-	GOSHS_DARWIN_ARM  = "goshs_darwin_arm64"
+	GOSHS_WINDOWS_64  = "goshs_windows_x86_64.tar.gz"
+	GOSHS_WINDOWS_32  = "goshs_windows_386.tar.gz"
+	GOSHS_WINDOWS_ARM = "goshs_windows_arm64.tar.gz"
+	GOSHS_LINUX_64    = "goshs_linux_x86_64.tar.gz"
+	GOSHS_LINUX_32    = "goshs_linux_386.tar.gz"
+	GOSHS_LINUX_ARM   = "goshs_linux_arm64.tar.gz"
+	GOSHS_DARWIN_64   = "goshs_darwin_x86_64.tar.gz"
+	GOSHS_DARWIN_ARM  = "goshs_darwin_arm64.tar.gz"
 )
 
 func CheckForUpdates(version string) (bool, string) {
@@ -94,10 +98,16 @@ func applyUpdate(assetURL string) error {
 	}
 	defer resp.Body.Close()
 
-	err = update.Apply(resp.Body, update.Options{})
+	goshsReader, err := tarXVZF(resp)
+	if err != nil {
+		return fmt.Errorf("failed to decompress the downloaded file: %+v", err)
+	}
+
+	err = update.Apply(goshsReader, update.Options{})
 	if err != nil {
 		return fmt.Errorf("failed to apply update: %+v", err)
 	}
+
 	return nil
 }
 
@@ -111,3 +121,30 @@ func assetMatchesOSAndArch(assetName string) bool {
 		(runtime.GOOS == "darwin" && runtime.GOARCH == "amd64" && assetName == GOSHS_DARWIN_64) ||
 		(runtime.GOOS == "darwin" && runtime.GOARCH == "arm64" && assetName == GOSHS_DARWIN_ARM)
 }
+
+func tarXVZF(response *http.Response) (io.Reader, error) {
+	gzipReader, err := gzip.NewReader(response.Body)
+	if err != nil {
+		return nil, err
+	}
+	defer gzipReader.Close()
+
+	tarReader := tar.NewReader(gzipReader)
+
+	for {
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+
+		if err != nil {
+			return nil, err
+		}
+
+		if strings.Contains(header.Name, "goshs") {
+			return io.LimitReader(tarReader, header.Size), nil
+		}
+	}
+
+	return nil, fmt.Errorf("%s", "end of function - should not happen")
+}