Web app hot fix (#459)

* Web app hot fix

* Small tweak

CHANGELOG.md

@@ -10,6 +10,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Support for casting clips from web app
+- A workaround for video loading errors: uses Playlet Web app and [YouTube.js](https://github.com/LuanRT/YouTube.js) to load streaming data. This workaround is limited, and might not work. It doesn't have closed captions, nor trickplay thumbnails (storyboards).
+  - **How To use**: Open the web app, click on a video, and choose "Play on <TV_NAME> (HOT FIX)".
 
 ## [0.25.6] - 2024-09-12
 

playlet-lib/src/components/Web/PlayletWebServer/Middleware/ProxyRouter.bs

@@ -0,0 +1,69 @@
+import "pkg:/source/services/HttpClient.bs"
+
+namespace Http
+
+    class ProxyRouter extends HttpRouter
+
+        function new(server as object)
+            super()
+
+            task = server.task
+            m.invidiousNode = task.invidious
+            m.invidiousService = new Invidious.InvidiousService(m.invidiousNode)
+        end function
+
+        @post("/api/proxy")
+        function ProxyRequest(context as object) as boolean
+            request = context.request
+            response = context.response
+
+            requestArgs = request.Json()
+            if requestArgs = invalid
+                response.Default(400, "Invalid request body")
+                return true
+            end if
+
+            httpReq = HttpClient.FromObject(requestArgs)
+            httpRes = httpReq.Await()
+
+            result = {
+                "status": httpRes.StatusCode()
+                "headers": httpRes.Headers()
+                "body": httpRes.Text()
+            }
+
+            response.Json(result)
+            return true
+        end function
+
+        @post("/api/ytjs-cache")
+        function CacheVideoInfo(context as object) as boolean
+            request = context.request
+            response = context.response
+
+            json = request.Json()
+            if json = invalid
+                response.Default(400, "Invalid request body")
+                return true
+            end if
+
+            instance = m.invidiousService.GetInstance()
+            videoId = json.videoId
+
+            url = `${instance}${Invidious.VIDEOS_ENDPOINT}/${videoId}`
+
+            ' Place a fake cache so we can read it later
+            requestObj = HttpClient.Get(url)
+            requestObj.CacheSeconds(18000)
+            responseObj = new HttpClient.HttpResponse(requestObj, invalid)
+            responseObj.OverrideStatusCode(200)
+            responseObj.OverrideText(request.body)
+            HttpClientCache.Set(responseObj)
+
+            response.Default(204, "OK")
+            return true
+        end function
+
+    end class
+
+end namespace

playlet-lib/src/components/Web/PlayletWebServer/PlayletWebServer.bs

@@ -9,6 +9,7 @@ import "pkg:/components/Web/PlayletWebServer/Middleware/InvidiousRouter.bs"
 import "pkg:/components/Web/PlayletWebServer/Middleware/PlayletLibUrlsRouter.bs"
 import "pkg:/components/Web/PlayletWebServer/Middleware/PreferencesRouter.bs"
 import "pkg:/components/Web/PlayletWebServer/Middleware/ProfilesRouter.bs"
+import "pkg:/components/Web/PlayletWebServer/Middleware/ProxyRouter.bs"
 import "pkg:/components/Web/PlayletWebServer/Middleware/RegistryRouter.bs"
 import "pkg:/components/Web/PlayletWebServer/Middleware/SearchHistoryRouter.bs"
 import "pkg:/components/Web/PlayletWebServer/Middleware/StateApiRouter.bs"
@@ -52,6 +53,7 @@ function SetupRoutes(server as object)
     server.UseRouter(new Http.PlayletLibUrlsRouter(server))
     server.UseRouter(new Http.DialRouter(server))
     server.UseRouter(new Http.CacheRouter())
+    server.UseRouter(new Http.ProxyRouter(server))
 
     etags = new Http.EtagUtils()
     server.UseRouter(new Http.HttpStaticFilesRouter("/", "libpkg:/www", etags, { staticFiles: true }))

playlet-lib/src/source/services/HttpClient.bs

@@ -119,6 +119,20 @@ namespace HttpClient
         return (new HttpRequest()).Method("HEAD").Url(url)
     end function
 
+    function FromObject(obj as object) as HttpRequest
+        request = new HttpRequest()
+
+        for each key in obj
+            if IsFunction(request[key])
+                request[key](obj[key])
+            else
+                throw `Invalid key: "${key}" in object passed to HttpClient.FromObject`
+            end if
+        end for
+
+        return request
+    end function
+
     class HttpRequest
 
         public urlTransfer as object
@@ -598,6 +612,10 @@ namespace HttpClient
             m._statusCode = statusCode
         end function
 
+        function OverrideText(text as string)
+            m._text = text
+        end function
+
         function IsSuccess() as boolean
             statusCode = m.StatusCode()
             return statusCode >= 200 and statusCode < 400

playlet-web/package.json

@@ -27,5 +27,8 @@
     "typescript": "^5.6.2",
     "vite": "^5.4.7",
     "vite-tsconfig-paths": "^5.0.1"
+  },
+  "dependencies": {
+    "youtubei.js": "^10.5.0"
   }
 }