From 84c85c98feb4ee59e7195973dae76873a4b67a81 Mon Sep 17 00:00:00 2001
From: HeshamTB <hishaminv@gmail.com>
Date: Mon, 11 Sep 2023 23:27:18 +0300
Subject: [PATCH] feat: display error message

---
 main.go                        | 49 +++++++++++++++++++++++++++++-----
 templates/download-result.html |  9 +++++++
 templates/download.html        |  2 +-
 3 files changed, 52 insertions(+), 8 deletions(-)

diff --git a/main.go b/main.go
index 7162093..08678bc 100644
--- a/main.go
+++ b/main.go
@@ -81,6 +81,31 @@ func writeJSONResponse(w http.ResponseWriter, s string) http.ResponseWriter {
 var templates *template.Template
 
 // TODO: Change all this to have a unified context
+type Context struct {
+    request *http.Request
+    Formats []DownloadFormats
+    AppURL string
+    StatusCode int
+    Err *error
+    IsTLS bool
+}
+
+func NewContext(r *http.Request) *Context {
+    return &Context{
+        request: r,
+        StatusCode: 200,
+        Formats: []DownloadFormats{
+            {
+                VideoRes: "720p",
+                videoOnly: false,
+                audioOnly: false,
+            },
+        },
+        AppURL: r.Host,
+        IsTLS: false,
+    }
+}
+
 var AppURL string = "http://localhost:8080"
 type HTMLBaseData struct {
     Formats []DownloadFormats
@@ -105,6 +130,7 @@ func main() {
     handler.HandleFunc(
         "/download", 
         func(w http.ResponseWriter, r *http.Request) {
+            ctx := NewContext(r)
             if r.Method != "POST" {
                 w.WriteHeader(400)
                 return
@@ -124,33 +150,42 @@ func main() {
 
             if err != nil {
                 log.Println(err.Error())
-                w.WriteHeader(500)
+                ctx.StatusCode = 500
+                ctx.Err = &err
+                err = templates.ExecuteTemplate(w,"download-result.html", ctx)
                 return
             }
             if req.StatusCode != 200 {
                 log.Printf("Got %v from convx\n", req)
-                w.WriteHeader(500)
+                ctx.StatusCode = 500
+                ctx.Err = &err
+                err = templates.ExecuteTemplate(w,"download-result.html", ctx)
                 return
             }
             body, err := io.ReadAll(req.Body)
             if err != nil {
-                w.WriteHeader(500)
                 log.Printf("Error while reading convx response body. \n%v", err.Error())
+                ctx.StatusCode = 500
+                ctx.Err = &err
+                err = templates.ExecuteTemplate(w,"download-result.html", ctx)
                 return
             }
             downloadURL := string(body)
             log.Println("URL from convx", downloadURL)
             
-            // Serve Button Template
-            err = templates.ExecuteTemplate(w,"download-result.html", downloadURL)
+            err = templates.ExecuteTemplate(w,"download-result.html", ctx)
             if err != nil {
                 log.Println(err.Error())
-                w.WriteHeader(500)
+                ctx.StatusCode = 500
+                ctx.Err = &err
+                err = templates.ExecuteTemplate(w,"download-result.html", ctx)
                 return
             }
         },
     )
     handler.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+        ctx := NewContext(r)
+        log.Println(ctx.AppURL)
         formats := []DownloadFormats{}
         formats = append(formats, DownloadFormats{
             VideoRes: "720p",
@@ -158,7 +193,7 @@ func main() {
             videoOnly: false,
         })
         appData.Formats = formats
-        err := templates.ExecuteTemplate(w, "download.html", appData)
+        err := templates.ExecuteTemplate(w, "download.html", ctx)
         if err != nil {
             log.Println(err.Error())
             w.WriteHeader(500)
diff --git a/templates/download-result.html b/templates/download-result.html
index 3a65d97..a6fa084 100644
--- a/templates/download-result.html
+++ b/templates/download-result.html
@@ -1 +1,10 @@
+<div id="get-btn">
+{{ if  eq .StatusCode 200 }}
 <a href="{{ . }}" rel="" download target="_blank">Download</a>
+{{ else }}
+<button>Try Again
+    <!-- <a class="htmx-indicator" href="#" aria-busy="true"></a> -->
+</button>
+<mark>Internal Error. Try Again later</mark>
+{{ end }}
+</div>
diff --git a/templates/download.html b/templates/download.html
index 6749229..59edf79 100644
--- a/templates/download.html
+++ b/templates/download.html
@@ -3,7 +3,7 @@
     <head>
         <meta charset="utf-8">
         <meta name="viewport" content="width=device-width, initial-scale=1">
-        <link rel="stylesheet" href="{{ .AppURL }}/static/static/css/pico.min.css">
+        <link rel="stylesheet" href="{{ if .IsTLS }}https{{ else }}http{{ end }}://{{ .AppURL }}/static/static/css/pico.min.css">
         <script src="https://unpkg.com/htmx.org@1.9.5"></script>
         <title>YT Download</title>
     </head>