From f9533463cedcfee16177107932c64a444b269b85 Mon Sep 17 00:00:00 2001
From: Jakob Odersky <jakob@odersky.com>
Date: Wed, 9 May 2018 01:53:04 -0700
Subject: Add bootstrap and fancy UI

---
 common/shared/src/main/scala/Message.scala       |  3 ++
 common/shared/src/main/scala/Templates.scala     | 50 +++++++++++++++++++++---
 common/shared/src/main/scala/TextTemplates.scala | 22 ++++++++++-
 3 files changed, 67 insertions(+), 8 deletions(-)

(limited to 'common')

diff --git a/common/shared/src/main/scala/Message.scala b/common/shared/src/main/scala/Message.scala
index 7ee36cb..84c733e 100644
--- a/common/shared/src/main/scala/Message.scala
+++ b/common/shared/src/main/scala/Message.scala
@@ -22,6 +22,9 @@ case class Message(content: String,
     Message.bytesToHex(digest.digest())
   }
 
+  def hashTags: Seq[String] =
+    content.split("\\s").filter(_.startsWith("#")).map(_.drop(1))
+
 }
 
 object Message {
diff --git a/common/shared/src/main/scala/Templates.scala b/common/shared/src/main/scala/Templates.scala
index 82e1dda..10ee116 100644
--- a/common/shared/src/main/scala/Templates.scala
+++ b/common/shared/src/main/scala/Templates.scala
@@ -4,13 +4,51 @@ class Templates[Builder, Output <: FragT, FragT](
     val bundle: scalatags.generic.Bundle[Builder, Output, FragT]) {
   import bundle.all._
 
-  def message(msg: Message) = li(
-    div(`class` := "from")(msg.author),
-    div(`class` := "content")(msg.content)
+  val colorStyles = List(
+    "bg-primary",
+    "bg-secondary",
+    "bg-success",
+    "bg-danger",
+    "bg-warning",
+    "bg-info",
+    "bg-dark"
   )
+  // pick a "random" style by computing a hash of arbitrary data
+  def dataStyle(data: String) = {
+    val dataHash = data.foldLeft(7) {
+      case (hash, char) =>
+        (hash * 31 + char.toInt)
+    }
+    colorStyles(
+      ((dataHash % colorStyles.length) + colorStyles.length) % colorStyles.length)
+  }
 
-  def conversation(messages: Seq[Message]): Tag = ul(id := "conversation")(
-    for (msg <- messages.sortBy(_.timestamp)) yield message(msg)
-  )
+  def message(msg: Message) = {
+    val tags = msg.hashTags.map(
+      hashTag =>
+        span(`class` := "badge badge-light float-right ml-1")(
+          hashTag
+      ))
+    div(`class` := "col-xs-12 col-sm-6 col-md-3 col-lg-2")(
+      div(`class` := s"card text-white mb-3 ${dataStyle(msg.author)}")(
+        div(`class` := "card-header")(
+          msg.author,
+          tags
+        ),
+        div(`class` := "card-body")(
+          div(`class` := "card-text")(
+            msg.content
+          )
+        )
+      )
+    )
+  }
+
+  def conversation(messages: Seq[Message]): Tag =
+    div(`class` := "container-fluid")(
+      div(id := "conversation", `class` := "row")(
+        for (msg <- messages.sortBy(_.timestamp)) yield message(msg)
+      )
+    )
 
 }
diff --git a/common/shared/src/main/scala/TextTemplates.scala b/common/shared/src/main/scala/TextTemplates.scala
index 24a3b0e..e7e364a 100644
--- a/common/shared/src/main/scala/TextTemplates.scala
+++ b/common/shared/src/main/scala/TextTemplates.scala
@@ -6,6 +6,9 @@ object TextTemplates extends Templates(scalatags.Text) {
   def scripts(js: Boolean = true) =
     if (js)
       Seq(
+        div(id := "scalajs-error", style := "display: none;")(
+          "ScalaJS raised an exception. See the log for more information."
+        ),
         script(`type` := "text/javascript",
                src := "/assets/ui/js/ui-fastopt.js"),
         script(`type` := "text/javascript")(
@@ -25,7 +28,7 @@ object TextTemplates extends Templates(scalatags.Text) {
                |    triad.Main().main(root)
                |  } catch(ex) {
                |    // display warning message in case of exception
-               |    //document.getElementById("scalajs-error").style.display = "block";
+               |    document.getElementById("scalajs-error").style.display = "block";
                |    throw ex;
                |  }
                |});
@@ -36,7 +39,22 @@ object TextTemplates extends Templates(scalatags.Text) {
     else Seq.empty
 
   def page(messages: Seq[Message], js: Boolean = true) = html(
-    head(),
+    head(
+      link(rel := "stylesheet",
+           `type` := "text/css",
+           href := "/assets/lib/bootstrap-4.1.0/css/bootstrap-reboot.min.css"),
+      link(rel := "stylesheet",
+           `type` := "text/css",
+           href := "/assets/lib/bootstrap-4.1.0/css/bootstrap-grid.min.css"),
+      link(rel := "stylesheet",
+           `type` := "text/css",
+           href := "/assets/lib/bootstrap-4.1.0/css/bootstrap.min.css"),
+      link(rel := "stylesheet",
+           `type` := "text/css",
+           href := "/assets/main.css"),
+      meta(name := "viewport",
+           content := "width=device-width, initial-scale=1, shrink-to-fit=no")
+    ),
     body(
       conversation(messages),
       scripts(js)
-- 
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