From 47ba2f1797d23a2214b6032f1884daa0e24f797f Mon Sep 17 00:00:00 2001
From: Arthur Belleville <arthur.belleville@datadoghq.com>
Date: Sun, 17 May 2026 16:28:15 +0200
Subject: [PATCH] feat(19-01): enrich TabloCardView with Progress field and
 wire batch progress query

- Add Progress int field to TabloCardView (D-05)
- Map row.Status into Tablo struct in TabloCardsFromUnreadRows
- Wire ListTabloProgressByIDs batch query in TablosListHandler (no N+1)
- Non-fatal error handling: progress defaults to 0 on query failure
---
 backend/internal/web/handlers_tablos.go | 22 ++++++++++++++++++++++
 backend/templates/discussion_forms.go   |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/backend/internal/web/handlers_tablos.go b/backend/internal/web/handlers_tablos.go
index 0e32b20..d2d29d6 100644
--- a/backend/internal/web/handlers_tablos.go
+++ b/backend/internal/web/handlers_tablos.go
@@ -51,6 +51,28 @@ func TablosListHandler(deps TablosDeps) http.HandlerFunc {
 		}
 
 		cardViews := templates.TabloCardsFromUnreadRows(tabloRows)
+
+		// Batch progress query: one query for all tablos (D-06, no N+1).
+		tabloIDs := make([]uuid.UUID, len(cardViews))
+		for i, cv := range cardViews {
+			tabloIDs[i] = cv.Tablo.ID
+		}
+		progressRows, progressErr := deps.Queries.ListTabloProgressByIDs(r.Context(), tabloIDs)
+		if progressErr != nil {
+			slog.Default().Error("tablos list: progress query failed", "user_id", user.ID, "err", progressErr)
+			// Non-fatal: proceed with Progress = 0 for all cards.
+			progressRows = nil
+		}
+		progressMap := make(map[uuid.UUID]int, len(progressRows))
+		for _, p := range progressRows {
+			if p.TotalTasks > 0 {
+				progressMap[p.TabloID] = int(p.DoneTasks * 100 / p.TotalTasks)
+			}
+		}
+		for i := range cardViews {
+			cardViews[i].Progress = progressMap[cardViews[i].Tablo.ID]
+		}
+
 		sidebarTablos := make([]sqlc.Tablo, 0, len(cardViews))
 		for _, cv := range cardViews {
 			sidebarTablos = append(sidebarTablos, cv.Tablo)
diff --git a/backend/templates/discussion_forms.go b/backend/templates/discussion_forms.go
index 2ae02d0..247bd2c 100644
--- a/backend/templates/discussion_forms.go
+++ b/backend/templates/discussion_forms.go
@@ -36,6 +36,7 @@ type DiscussionTabData struct {
 type TabloCardView struct {
 	Tablo                 sqlc.Tablo
 	DiscussionUnreadCount int64
+	Progress              int // 0–100; 0 when no tasks (D-05)
 }
 
 func DiscussionPostURL(tabloID uuid.UUID) string {
@@ -90,6 +91,7 @@ func TabloCardsFromUnreadRows(rows []sqlc.ListTablosByUserWithDiscussionUnreadRo
 				Color:       row.Color,
 				CreatedAt:   row.CreatedAt,
 				UpdatedAt:   row.UpdatedAt,
+				Status:      row.Status,
 			},
 			DiscussionUnreadCount: row.DiscussionUnreadCount,
 		})