vnext: `releases` middleware

* Help android app to find upgrade path

4 files changed, 224 insertions, 0 deletions

diff --git a/vnext/server/index.js b/vnext/server/index.js
index 16abc8db..692fbd76 100644
--- a/vnext/server/index.js
+++ b/vnext/server/index.js
@@ -9,6 +9,7 @@ import serverRenderer from './middleware/renderer'
 import event from './middleware/event'
 import oembed from './middleware/oembed'
 import urlExpand from './middleware/urlexpand'
+import releases from './middleware/android'
 
 const PORT = process.env.LISTEN_PORT || 8081
 import path from 'path'
@@ -23,6 +24,7 @@ const router = express.Router()
 router.post('/api/v2/sender', event)
 router.get('/api/v2/oembed', oembed)
 router.get('/api/v2/urlexpand', urlExpand)
+router.get('/api/apps/android/releases', releases)
 
 const durov_webhook = webhookPath()
 if (durov_webhook) {
diff --git a/vnext/server/middleware/android.js b/vnext/server/middleware/android.js
new file mode 100644
index 00000000..ae5f8fe8
--- /dev/null
+++ b/vnext/server/middleware/android.js
@@ -0,0 +1,43 @@
+import debug from 'debug'
+var log = debug('android')
+
+import * as legacy_data from './legacy.json'
+
+const releases_url = 'https://api.github.com/repos/Juick/Juick-Android/releases'
+
+/**
+ * Return android releases
+ * @type {import('express').RequestParamHandler}
+ */
+const releases = async (req, res) => {
+    let agent = req.headers['user-agent'] || 'unknown'
+    let android_version = parse_agent_android_sdk_version(agent)
+    log(`releases request from ${android_version || agent}`)
+    if (android_version > 0) {
+        if (is_legacy_android(android_version)) {
+            log('responding with legacy stub')
+            return res.json([legacy_data])
+        } else {
+            log('redirecting to Github')
+            return res.redirect(releases_url)
+        }
+    }
+    return res.json([])
+}
+
+const parse_agent_android_sdk_version = (agent = '') => {
+    let version = agent.split(' ', 3)
+    let is_android_app = version.length == 3 && version[2].startsWith('Android')
+    if (is_android_app) {
+        let android_version = version[2].split('/')
+        let is_valid_version = android_version.length == 2
+        return is_valid_version ? +(android_version[1]) : NaN
+    }
+    return NaN
+}
+
+const is_legacy_android = (version) => {
+    return version < 24
+}
+
+export default releases
diff --git a/vnext/server/middleware/android.spec.js b/vnext/server/middleware/android.spec.js
new file mode 100644
index 00000000..448714ac
--- /dev/null
+++ b/vnext/server/middleware/android.spec.js
@@ -0,0 +1,37 @@
+import request from 'supertest'
+import express from 'express'
+
+import releases from './android'
+
+const app = express()
+app.get('/releases', releases)
+
+describe('Releases helper', () => {
+    it('Should respond with empty array to unknown user agents', async () => {
+        return request(app)
+        .get('/releases')
+        .expect(200)
+        .then(response => {
+            expect(response.body).toStrictEqual([])
+        })
+    })
+    it('Should respond with a single legacy version data to old Android app', async () => {
+        return request(app)
+        .get('/releases')
+        .set('User-Agent', 'Juick/100 okhttp/3.12 Android/19')
+        .expect(200)
+        .then(response => {
+            expect(response.body.length).toBe(1)
+            expect(response.body[0].name).toBe('3.1.216')
+        })
+    })
+    it('Should redirect to Github when Android version is ok', async () => {
+        return request(app)
+        .get('/releases')
+        .set('User-Agent', 'Juick/100 okhttp/3.12 Android/24')
+        .expect(302)
+        .then(response => {
+            expect(response.redirect).toBe(true)
+        })
+    })
+})
diff --git a/vnext/server/middleware/legacy.json b/vnext/server/middleware/legacy.json
new file mode 100644
index 00000000..840708e6
--- /dev/null
+++ b/vnext/server/middleware/legacy.json
@@ -0,0 +1,142 @@
+{
+    "url": "https://api.github.com/repos/juick/Juick-Android/releases/164308344",
+    "assets_url": "https://api.github.com/repos/juick/Juick-Android/releases/164308344/assets",
+    "upload_url": "https://uploads.github.com/repos/juick/Juick-Android/releases/164308344/assets{?name,label}",
+    "html_url": "https://github.com/juick/Juick-Android/releases/tag/v3.1.216",
+    "id": 164308344,
+    "author": {
+        "login": "vitalyster",
+        "id": 1052407,
+        "node_id": "MDQ6VXNlcjEwNTI0MDc=",
+        "avatar_url": "https://avatars.githubusercontent.com/u/1052407?v=4",
+        "gravatar_id": "",
+        "url": "https://api.github.com/users/vitalyster",
+        "html_url": "https://github.com/vitalyster",
+        "followers_url": "https://api.github.com/users/vitalyster/followers",
+        "following_url": "https://api.github.com/users/vitalyster/following{/other_user}",
+        "gists_url": "https://api.github.com/users/vitalyster/gists{/gist_id}",
+        "starred_url": "https://api.github.com/users/vitalyster/starred{/owner}{/repo}",
+        "subscriptions_url": "https://api.github.com/users/vitalyster/subscriptions",
+        "organizations_url": "https://api.github.com/users/vitalyster/orgs",
+        "repos_url": "https://api.github.com/users/vitalyster/repos",
+        "events_url": "https://api.github.com/users/vitalyster/events{/privacy}",
+        "received_events_url": "https://api.github.com/users/vitalyster/received_events",
+        "type": "User",
+        "site_admin": false
+    },
+    "node_id": "RE_kwDOADJkWc4JyyV4",
+    "tag_name": "v3.1.216",
+    "target_commitish": "master",
+    "name": "3.1.216",
+    "draft": false,
+    "prerelease": true,
+    "created_at": "2024-07-07T19:47:32Z",
+    "published_at": "2024-07-07T19:51:29Z",
+    "assets": [
+        {
+            "url": "https://api.github.com/repos/juick/Juick-Android/releases/assets/178215973",
+            "id": 178215973,
+            "node_id": "RA_kwDOADJkWc4Kn1wl",
+            "name": "Juick-free-v3.1.216.apk",
+            "label": null,
+            "uploader": {
+                "login": "vitalyster",
+                "id": 1052407,
+                "node_id": "MDQ6VXNlcjEwNTI0MDc=",
+                "avatar_url": "https://avatars.githubusercontent.com/u/1052407?v=4",
+                "gravatar_id": "",
+                "url": "https://api.github.com/users/vitalyster",
+                "html_url": "https://github.com/vitalyster",
+                "followers_url": "https://api.github.com/users/vitalyster/followers",
+                "following_url": "https://api.github.com/users/vitalyster/following{/other_user}",
+                "gists_url": "https://api.github.com/users/vitalyster/gists{/gist_id}",
+                "starred_url": "https://api.github.com/users/vitalyster/starred{/owner}{/repo}",
+                "subscriptions_url": "https://api.github.com/users/vitalyster/subscriptions",
+                "organizations_url": "https://api.github.com/users/vitalyster/orgs",
+                "repos_url": "https://api.github.com/users/vitalyster/repos",
+                "events_url": "https://api.github.com/users/vitalyster/events{/privacy}",
+                "received_events_url": "https://api.github.com/users/vitalyster/received_events",
+                "type": "User",
+                "site_admin": false
+            },
+            "content_type": "application/vnd.android.package-archive",
+            "state": "uploaded",
+            "size": 7807858,
+            "download_count": 2,
+            "created_at": "2024-07-07T19:51:12Z",
+            "updated_at": "2024-07-07T19:51:25Z",
+            "browser_download_url": "https://github.com/juick/Juick-Android/releases/download/v3.1.216/Juick-free-v3.1.216.apk"
+        },
+        {
+            "url": "https://api.github.com/repos/juick/Juick-Android/releases/assets/178215894",
+            "id": 178215894,
+            "node_id": "RA_kwDOADJkWc4Kn1vW",
+            "name": "Juick-google-v3.1.216.apk",
+            "label": null,
+            "uploader": {
+                "login": "vitalyster",
+                "id": 1052407,
+                "node_id": "MDQ6VXNlcjEwNTI0MDc=",
+                "avatar_url": "https://avatars.githubusercontent.com/u/1052407?v=4",
+                "gravatar_id": "",
+                "url": "https://api.github.com/users/vitalyster",
+                "html_url": "https://github.com/vitalyster",
+                "followers_url": "https://api.github.com/users/vitalyster/followers",
+                "following_url": "https://api.github.com/users/vitalyster/following{/other_user}",
+                "gists_url": "https://api.github.com/users/vitalyster/gists{/gist_id}",
+                "starred_url": "https://api.github.com/users/vitalyster/starred{/owner}{/repo}",
+                "subscriptions_url": "https://api.github.com/users/vitalyster/subscriptions",
+                "organizations_url": "https://api.github.com/users/vitalyster/orgs",
+                "repos_url": "https://api.github.com/users/vitalyster/repos",
+                "events_url": "https://api.github.com/users/vitalyster/events{/privacy}",
+                "received_events_url": "https://api.github.com/users/vitalyster/received_events",
+                "type": "User",
+                "site_admin": false
+            },
+            "content_type": "application/vnd.android.package-archive",
+            "state": "uploaded",
+            "size": 8421195,
+            "download_count": 7,
+            "created_at": "2024-07-07T19:50:49Z",
+            "updated_at": "2024-07-07T19:51:04Z",
+            "browser_download_url": "https://github.com/juick/Juick-Android/releases/download/v3.1.216/Juick-google-v3.1.216.apk"
+        },
+        {
+            "url": "https://api.github.com/repos/juick/Juick-Android/releases/assets/178215877",
+            "id": 178215877,
+            "node_id": "RA_kwDOADJkWc4Kn1vF",
+            "name": "Juick-huawei-v3.1.216.apk",
+            "label": null,
+            "uploader": {
+                "login": "vitalyster",
+                "id": 1052407,
+                "node_id": "MDQ6VXNlcjEwNTI0MDc=",
+                "avatar_url": "https://avatars.githubusercontent.com/u/1052407?v=4",
+                "gravatar_id": "",
+                "url": "https://api.github.com/users/vitalyster",
+                "html_url": "https://github.com/vitalyster",
+                "followers_url": "https://api.github.com/users/vitalyster/followers",
+                "following_url": "https://api.github.com/users/vitalyster/following{/other_user}",
+                "gists_url": "https://api.github.com/users/vitalyster/gists{/gist_id}",
+                "starred_url": "https://api.github.com/users/vitalyster/starred{/owner}{/repo}",
+                "subscriptions_url": "https://api.github.com/users/vitalyster/subscriptions",
+                "organizations_url": "https://api.github.com/users/vitalyster/orgs",
+                "repos_url": "https://api.github.com/users/vitalyster/repos",
+                "events_url": "https://api.github.com/users/vitalyster/events{/privacy}",
+                "received_events_url": "https://api.github.com/users/vitalyster/received_events",
+                "type": "User",
+                "site_admin": false
+            },
+            "content_type": "application/vnd.android.package-archive",
+            "state": "uploaded",
+            "size": 8275073,
+            "download_count": 3,
+            "created_at": "2024-07-07T19:50:27Z",
+            "updated_at": "2024-07-07T19:50:41Z",
+            "browser_download_url": "https://github.com/juick/Juick-Android/releases/download/v3.1.216/Juick-huawei-v3.1.216.apk"
+        }
+    ],
+    "tarball_url": "https://api.github.com/repos/juick/Juick-Android/tarball/v3.1.216",
+    "zipball_url": "https://api.github.com/repos/juick/Juick-Android/zipball/v3.1.216",
+    "body": "* Bugfixes and performance improvements"
+}