Add comments field to tasks for providing extra context

All tests pass. Here's a summary of the changes I made:

1. **Added `Comment` data type** in `Omni/Task/Core.hs` with
`commentTex 2. **Added `taskComments` field** to the `Task` type
to store a list of 3. **Updated database schema** with a `comments
TEXT` column (stored as 4. **Added SQL instances** for `[Comment]`
to serialize/deserialize 5. **Added `addComment` function** to
add timestamped comments to tasks 6. **Added CLI command** `task
comment <id> <message> [--json]` 7. **Updated `showTaskDetailed`**
to display comments in the detailed vi 8. **Added unit tests**
for comments functionality 9. **Added CLI tests** for the comment
command 10. **Fixed dependent files** (`Omni/Agent/Worker.hs` and
`Omni/Jr/Web.h

Task-Id: t-167

1 files changed, 13 insertions, 16 deletions

diff --git a/Omni/Jr/Web.hs b/Omni/Jr/Web.hs
index fbb56a7..a861944 100644
--- a/Omni/Jr/Web.hs
+++ b/Omni/Jr/Web.hs
@@ -879,10 +879,8 @@ renderEpicCardWithStats allTasks t =
             Lucid.span_ [Lucid.class_ "priority"] (Lucid.toHtml (tshow (TaskCore.taskPriority t)))
           Lucid.p_ [Lucid.class_ "task-title"] (Lucid.toHtml (TaskCore.taskTitle t))
           when (totalCount > 0) <| epicProgressBar doneCount inProgressCount openAndReview totalCount
-          case TaskCore.taskDescription t of
-            Nothing -> pure ()
-            Just desc ->
-              Lucid.p_ [Lucid.class_ "kb-preview"] (Lucid.toHtml (Text.take 200 desc <> "..."))
+          unless (Text.null (TaskCore.taskDescription t))
+            <| Lucid.p_ [Lucid.class_ "kb-preview"] (Lucid.toHtml (Text.take 200 (TaskCore.taskDescription t) <> "..."))
 
 getDescendants :: [TaskCore.Task] -> Text -> [TaskCore.Task]
 getDescendants allTasks parentId =
@@ -1045,9 +1043,9 @@ instance Lucid.ToHtml TaskDetailPage where
                 for_ maybeAggMetrics (renderAggregatedMetrics allTasks task)
                 Lucid.div_ [Lucid.class_ "detail-section"] <| do
                   Lucid.h3_ "Design"
-                  case TaskCore.taskDescription task of
-                    Nothing -> Lucid.p_ [Lucid.class_ "empty-msg"] "No design document yet."
-                    Just desc -> Lucid.div_ [Lucid.class_ "markdown-content"] (renderMarkdown desc)
+                  if Text.null (TaskCore.taskDescription task)
+                    then Lucid.p_ [Lucid.class_ "empty-msg"] "No design document yet."
+                    else Lucid.div_ [Lucid.class_ "markdown-content"] (renderMarkdown (TaskCore.taskDescription task))
                   Lucid.details_ [Lucid.class_ "edit-description"] <| do
                     Lucid.summary_ "Edit Design"
                     Lucid.form_ [Lucid.method_ "POST", Lucid.action_ ("/tasks/" <> TaskCore.taskId task <> "/description")] <| do
@@ -1057,16 +1055,15 @@ instance Lucid.ToHtml TaskDetailPage where
                           Lucid.rows_ "15",
                           Lucid.placeholder_ "Enter design in Markdown format..."
                         ]
-                        (Lucid.toHtml (fromMaybe "" (TaskCore.taskDescription task)))
+                        (Lucid.toHtml (TaskCore.taskDescription task))
                       Lucid.div_ [Lucid.class_ "form-actions"] <| do
                         Lucid.button_ [Lucid.type_ "submit", Lucid.class_ "submit-btn"] "Save Design"
               _ ->
-                case TaskCore.taskDescription task of
-                  Nothing -> pure ()
-                  Just desc ->
-                    Lucid.div_ [Lucid.class_ "detail-section"] <| do
-                      Lucid.h3_ "Description"
-                      Lucid.pre_ [Lucid.class_ "description"] (Lucid.toHtml desc)
+                unless (Text.null (TaskCore.taskDescription task))
+                  <| Lucid.div_ [Lucid.class_ "detail-section"]
+                  <| do
+                    Lucid.h3_ "Description"
+                    Lucid.pre_ [Lucid.class_ "description"] (Lucid.toHtml (TaskCore.taskDescription task))
 
             let children = filter (maybe False (TaskCore.matchesId (TaskCore.taskId task)) <. TaskCore.taskParent) allTasks
             unless (null children) <| do
@@ -2027,8 +2024,8 @@ server =
 
     taskDescriptionHandler :: Text -> DescriptionForm -> Servant.Handler (Headers '[Header "Location" Text] NoContent)
     taskDescriptionHandler tid (DescriptionForm desc) = do
-      let descMaybe = if Text.null (Text.strip desc) then Nothing else Just desc
-      _ <- liftIO <| TaskCore.editTask tid (\t -> t {TaskCore.taskDescription = descMaybe})
+      let descText = Text.strip desc
+      _ <- liftIO <| TaskCore.editTask tid (\t -> t {TaskCore.taskDescription = descText})
       pure <| addHeader ("/tasks/" <> tid) NoContent
 
     taskNotesHandler :: Text -> NotesForm -> Servant.Handler (Headers '[Header "Location" Text] NoContent)