feat: display if new version available

Author: tbrittain

app.go

@@ -3,7 +3,9 @@ package main
 import (
 	"context"
 	"database/sql"
+	"encoding/json"
 	"fmt"
+	"net/http"
 	"os"
 	"path/filepath"
 	"strings"
@@ -40,6 +42,57 @@ func (a *App) Version() string {
 	return a.version
 }
 
+// UpdateInfo holds information about an available update.
+type UpdateInfo struct {
+	Available bool   `json:"available"`
+	Tag       string `json:"tag"`
+	URL       string `json:"url"`
+}
+
+// CheckForUpdate queries GitHub for the latest release and returns update
+// info if a newer version is available. Returns Available=false on any error
+// or if already up to date.
+func (a *App) CheckForUpdate() UpdateInfo {
+	if a.version == "dev" {
+		return UpdateInfo{}
+	}
+
+	client := &http.Client{Timeout: 5 * time.Second}
+	req, err := http.NewRequest("GET", "https://api.github.com/repos/tbrittain/git-analytics/releases/latest", nil)
+	if err != nil {
+		return UpdateInfo{}
+	}
+	req.Header.Set("User-Agent", "git-analytics/"+a.version)
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return UpdateInfo{}
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return UpdateInfo{}
+	}
+
+	var release struct {
+		TagName string `json:"tag_name"`
+		HTMLURL string `json:"html_url"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&release); err != nil {
+		return UpdateInfo{}
+	}
+
+	if release.TagName == "" || release.TagName == a.version {
+		return UpdateInfo{}
+	}
+
+	return UpdateInfo{
+		Available: true,
+		Tag:       release.TagName,
+		URL:       release.HTMLURL,
+	}
+}
+
 // startup is called when the app starts. The context is saved
 // so we can call the runtime methods
 func (a *App) startup(ctx context.Context) {

frontend/src/App.vue

@@ -1,6 +1,6 @@
 <script lang="ts" setup>
 import { onMounted, provide, ref } from 'vue'
-import { OpenRepository, SelectDirectory, Version } from '../wailsjs/go/main/App'
+import { CheckForUpdate, OpenRepository, SelectDirectory, Version } from '../wailsjs/go/main/App'
 import RepoSelector from './components/RepoSelector.vue'
 import RecentReposList from './components/RecentReposList.vue'
 
@@ -10,9 +10,20 @@ const loading = ref(false)
 const error = ref('')
 const repoReady = ref(false)
 const appVersion = ref('')
+const updateURL = ref('')
+const updateTag = ref('')
 
 onMounted(async () => {
   appVersion.value = await Version()
+  try {
+    const info = await CheckForUpdate()
+    if (info.available) {
+      updateTag.value = info.tag
+      updateURL.value = info.url
+    }
+  } catch {
+    // Silently ignore update check failures
+  }
 })
 
 async function onSelectRepo() {
@@ -83,7 +94,11 @@ async function onOpenRecent(path: string) {
     </main>
     <footer v-if="appVersion">
       <a href="https://github.com/tbrittain/git-analytics" target="_blank" rel="noopener">Git Analytics</a>
+      <span class="separator">·</span>
       <span>{{ appVersion }}</span>
+      <a v-if="updateURL" :href="updateURL" target="_blank" rel="noopener" class="update-link">
+        Update available: {{ updateTag }}
+      </a>
     </footer>
   </div>
 </template>
@@ -151,8 +166,8 @@ main {
 
 footer {
   display: flex;
-  justify-content: space-between;
   align-items: center;
+  gap: 8px;
   padding: 8px 20px;
   border-top: 1px solid #30363d;
   color: #8b949e;
@@ -170,6 +185,19 @@ footer a:hover {
   text-decoration: underline;
 }
 
+.separator {
+  color: #30363d;
+}
+
+.update-link {
+  margin-left: auto;
+  color: #58a6ff;
+}
+
+.update-link:hover {
+  color: #79c0ff;
+}
+
 .status {
   display: flex;
   align-items: center;

frontend/wailsjs/go/main/App.d.ts

@@ -1,8 +1,10 @@
 // Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
 // This file is automatically generated. DO NOT EDIT
+import {main} from '../models';
 import {query} from '../models';
 import {config} from '../models';
-import {main} from '../models';
+
+export function CheckForUpdate():Promise<main.UpdateInfo>;
 
 export function CoChanges(arg1:string,arg2:string,arg3:number,arg4:number,arg5:Array<string>):Promise<Array<query.CoChangePair>>;
 

frontend/wailsjs/go/main/App.js

@@ -2,6 +2,10 @@
 // Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
 // This file is automatically generated. DO NOT EDIT
 
+export function CheckForUpdate() {
+  return window['go']['main']['App']['CheckForUpdate']();
+}
+
 export function CoChanges(arg1, arg2, arg3, arg4, arg5) {
   return window['go']['main']['App']['CoChanges'](arg1, arg2, arg3, arg4, arg5);
 }

frontend/wailsjs/go/models.ts

@@ -64,6 +64,22 @@ export namespace main {
 	        this.last_commit_age = source["last_commit_age"];
 	    }
 	}
+	export class UpdateInfo {
+	    available: boolean;
+	    tag: string;
+	    url: string;
+	
+	    static createFrom(source: any = {}) {
+	        return new UpdateInfo(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.available = source["available"];
+	        this.tag = source["tag"];
+	        this.url = source["url"];
+	    }
+	}
 
 }