Add check version functionality

 * add backend support
 * add ui support
 * minor fixes
 * workaround query refetch not working after network error
 * revert changes to Makefile after testing is complete
 * cosmetic fixes
 * switch to Releases Github API endpoint, add latest Release URL to UI
 * cosmetic fixes
 * latest version is only shown in UI when version is available and data is ready
 * cosmetic fix
 * resolve conflict , squash rebase

graphql/documents/queries/misc.graphql

@@ -66,3 +66,10 @@ query Version {
     build_time
   }
 }
+
+query LatestVersion {
+  latestversion {
+    shorthash
+    url
+  }
+}

graphql/schema/schema.graphql

@@ -96,6 +96,9 @@ type Query {
 
   # Version
   version: Version!
+
+  # LatestVersion
+  latestversion: ShortVersion!
 }
 
 type Mutation {
@@ -136,4 +139,4 @@ schema {
   query: Query
   mutation: Mutation
   subscription: Subscription
-}
+}

graphql/schema/types/version.graphql

@@ -2,4 +2,9 @@ type Version {
   version: String
   hash: String!
   build_time: String!
-}
+}
+
+type ShortVersion {
+  shorthash: String!
+  url: String!
+}

pkg/api/check_version.go

@@ -0,0 +1,179 @@
+package api
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/stashapp/stash/pkg/logger"
+	"io/ioutil"
+	"net/http"
+	"runtime"
+	"time"
+)
+
+//we use the github REST V3 API as no login is required
+const apiURL string = "https://api.github.com/repos/stashapp/stash/tags"
+const apiReleases string = "https://api.github.com/repos/stashapp/stash/releases"
+const apiAcceptHeader string = "application/vnd.github.v3+json"
+
+var stashReleases = func() map[string]string {
+	return map[string]string{
+		"windows/amd64": "stash-win.exe",
+		"linux/amd64":   "stash-linux",
+		"darwin/amd64":  "stash-osx",
+		"linux/arm":     "stash-pi",
+	}
+}
+
+type githubTagResponse struct {
+	Name        string
+	Zipball_url string
+	Tarball_url string
+	Commit      struct {
+		Sha string
+		Url string
+	}
+	Node_id string
+}
+
+type githubReleasesResponse struct {
+	Url              string
+	Assets_url       string
+	Upload_url       string
+	Html_url         string
+	Id               int64
+	Node_id          string
+	Tag_name         string
+	Target_commitish string
+	Name             string
+	Draft            bool
+	Author           githubAuthor
+	Prerelease       bool
+	Created_at       string
+	Published_at     string
+	Assets           []githubAsset
+	Tarball_url      string
+	Zipball_url      string
+	Body             string
+}
+
+type githubAuthor struct {
+	Login               string
+	Id                  int64
+	Node_id             string
+	Avatar_url          string
+	Gravatar_id         string
+	Url                 string
+	Html_url            string
+	Followers_url       string
+	Following_url       string
+	Gists_url           string
+	Starred_url         string
+	Subscriptions_url   string
+	Organizations_url   string
+	Repos_url           string
+	Events_url          string
+	Received_events_url string
+	Type                string
+	Site_admin          bool
+}
+
+type githubAsset struct {
+	Url                  string
+	Id                   int64
+	Node_id              string
+	Name                 string
+	Label                string
+	Uploader             githubAuthor
+	Content_type         string
+	State                string
+	Size                 int64
+	Download_count       int64
+	Created_at           string
+	Updated_at           string
+	Browser_download_url string
+}
+
+//gets latest version (git commit hash) from github API
+//the repo's tags are used to find the latest version
+//of the "master" or "develop" branch
+func GetLatestVersion(shortHash bool) (latestVersion string, latestRelease string, err error) {
+
+	platform := fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH)
+	wantedRelease := stashReleases()[platform]
+
+	branch, _, _ := GetVersion()
+	if branch == "" {
+		return "", "", fmt.Errorf("Stash doesn't have a version. Version check not supported.")
+	}
+
+	client := &http.Client{
+		Timeout: 3 * time.Second,
+	}
+
+	req, _ := http.NewRequest("GET", apiReleases, nil)
+
+	req.Header.Add("Accept", apiAcceptHeader) // gh api recommendation , send header with api version
+	response, err := client.Do(req)
+
+	input := make([]githubReleasesResponse, 0)
+
+	if err != nil {
+		return "", "", fmt.Errorf("Github API request failed: %s", err)
+	} else {
+
+		defer response.Body.Close()
+
+		data, err := ioutil.ReadAll(response.Body)
+		if err != nil {
+			return "", "", fmt.Errorf("Github API read response failed: %s", err)
+		} else {
+			err = json.Unmarshal(data, &input)
+			if err != nil {
+				return "", "", fmt.Errorf("Unmarshalling Github API response failed: %s", err)
+			} else {
+
+				for _, ghApi := range input {
+					if ghApi.Tag_name == branch {
+
+						if shortHash {
+							latestVersion = ghApi.Target_commitish[0:7] //shorthash is first 7 digits of git commit hash
+						} else {
+							latestVersion = ghApi.Target_commitish
+						}
+						if wantedRelease != "" {
+							for _, asset := range ghApi.Assets {
+								if asset.Name == wantedRelease {
+									latestRelease = asset.Browser_download_url
+									break
+								}
+
+							}
+						}
+						break
+					}
+				}
+
+			}
+		}
+		if latestVersion == "" {
+			return "", "", fmt.Errorf("No version found for \"%s\"", branch)
+		}
+	}
+	return latestVersion, latestRelease, nil
+
+}
+
+func printLatestVersion() {
+	_, githash, _ = GetVersion()
+	latest, _, err := GetLatestVersion(true)
+	if err != nil {
+		logger.Errorf("Couldn't find latest version: %s", err)
+	} else {
+		if githash == latest {
+			logger.Infof("Version: (%s) is already the latest released.", latest)
+		} else {
+			logger.Infof("New version: (%s) available.", latest)
+		}
+	}
+
+}

pkg/api/resolver.go

@@ -6,7 +6,7 @@ import (
 	"strconv"
 
 	"github.com/99designs/gqlgen/graphql"
-
+	"github.com/stashapp/stash/pkg/logger"
 	"github.com/stashapp/stash/pkg/models"
 )
 
@@ -116,6 +116,21 @@ func (r *queryResolver) Version(ctx context.Context) (*models.Version, error) {
 	}, nil
 }
 
+//Gets latest version (git shorthash commit for now)
+func (r *queryResolver) Latestversion(ctx context.Context) (*models.ShortVersion, error) {
+	ver, url, err := GetLatestVersion(true)
+	if err == nil {
+		logger.Infof("Retrieved latest hash: %s", ver)
+	} else {
+		logger.Errorf("Error while retrieving latest hash: %s", err)
+	}
+
+	return &models.ShortVersion{
+		Shorthash: ver,
+		URL:       url,
+	}, err
+}
+
 // Get scene marker tags which show up under the video.
 func (r *queryResolver) SceneMarkerTags(ctx context.Context, scene_id string) ([]*models.SceneMarkerTag, error) {
 	sceneID, _ := strconv.Atoi(scene_id)

pkg/api/server.go

@@ -216,6 +216,7 @@ func Start() {
 
 		go func() {
 			printVersion()
+			printLatestVersion()
 			logger.Infof("stash is listening on " + address)
 			logger.Infof("stash is running at https://" + displayAddress + "/")
 			logger.Fatal(httpsServer.ListenAndServeTLS("", ""))
@@ -228,6 +229,7 @@ func Start() {
 
 		go func() {
 			printVersion()
+			printLatestVersion()
 			logger.Infof("stash is listening on " + address)
 			logger.Infof("stash is running at http://" + displayAddress + "/")
 			logger.Fatal(server.ListenAndServe())

ui/v2/src/components/Settings/SettingsAboutPanel.tsx

@@ -1,4 +1,5 @@
 import {
+  Button,
   H1,
   H4,
   H6,
@@ -11,10 +12,11 @@ import * as GQL from "../../core/generated-graphql";
 import { TextUtils } from "../../utils/text";
 import { StashService } from "../../core/StashService";
 
-interface IProps {}
+interface IProps { }
 
 export const SettingsAboutPanel: FunctionComponent<IProps> = (props: IProps) => {
   const { data, error, loading } = StashService.useVersion();
+  const { data: dataLatest, error: errorLatest, loading: loadingLatest, refetch, networkStatus } = StashService.useLatestVersion();
 
   function maybeRenderTag() {
     if (!data || !data.version || !data.version.version) { return; }
@@ -26,32 +28,73 @@ export const SettingsAboutPanel: FunctionComponent<IProps> = (props: IProps) =>
     );
   }
 
-  function renderVersion() {
-    if (!data || !data.version) { return; }
+  function maybeRenderLatestVersion() {
+    if (!dataLatest || !dataLatest.latestversion || !dataLatest.latestversion.shorthash || !dataLatest.latestversion.url) { return; }
+    if (!data || !data.version || !data.version.hash) {
+      return (
+        <>{dataLatest.latestversion.shorthash}</>
+      );
+    }
+
+    if (data.version.hash !== dataLatest.latestversion.shorthash) {
+      return (
+        <>
+          <strong>{dataLatest.latestversion.shorthash} [NEW] </strong><a href={dataLatest.latestversion.url}>Download</a>
+        </>
+      );
+    }
+
+    return (
+      <>{dataLatest.latestversion.shorthash}</>
+    );
+  }
+
+  function renderLatestVersion() {
+    if (!data || !data.version || !data.version.version) { return; } //if there is no "version" latest version check is obviously not supported
     return (
-      <>
       <HTMLTable>
         <tbody>
-          {maybeRenderTag()}
           <tr>
-            <td>Build hash:</td>
-            <td>{data.version.hash}</td>
+            <td>Latest Version Build Hash: </td>
+            <td>{maybeRenderLatestVersion()} </td>
           </tr>
           <tr>
-            <td>Build time:</td>
-            <td>{data.version.build_time}</td>
+            <td><Button onClick={() => refetch()} text="Check for new version" /></td>
           </tr>
-        </tbody>  
+        </tbody>
       </HTMLTable>
+    );
+  }
+
+  function renderVersion() {
+    if (!data || !data.version) { return; }
+    return (
+      <>
+        <HTMLTable>
+          <tbody>
+            {maybeRenderTag()}
+            <tr>
+              <td>Build hash:</td>
+              <td>{data.version.hash}</td>
+            </tr>
+            <tr>
+              <td>Build time:</td>
+              <td>{data.version.build_time}</td>
+            </tr>
+          </tbody>
+        </HTMLTable>
       </>
     );
   }
   return (
     <>
       <H4>About</H4>
       {!data || loading ? <Spinner size={Spinner.SIZE_LARGE} /> : undefined}
-      {!!error ? <span>error.message</span> : undefined}
+      {!!error ? <span>{error.message}</span> : undefined}
+      {!!errorLatest ? <span>{errorLatest.message}</span> : undefined}
       {renderVersion()}
+      {!dataLatest || loadingLatest || networkStatus == 4 ? <Spinner size={Spinner.SIZE_SMALL} /> : <>{renderLatestVersion()}</>}
+
     </>
   );
 };