Merge pull request 'feat: add backend pagination for infinite scroll in issues and pulls' (#66) from feature/pagination-infinite-scroll into master

internal/handlers/handlers.go

@@ -245,6 +245,10 @@ func (h *Handler) ListIssues(w http.ResponseWriter, r *http.Request) {
 	if selectedState == "" {
 		selectedState = "open"
 	}
+	page, _ := strconv.Atoi(r.URL.Query().Get("page"))
+	if page < 1 {
+		page = 1
+	}
 
 	data := issuesData{
 		Orgs:          orgNames,
@@ -261,15 +265,38 @@ func (h *Handler) ListIssues(w http.ResponseWriter, r *http.Request) {
 			queryOrgs = []string{selectedOrg}
 		}
 
-		issues, err := h.Client.ListAllIssues(r.Context(), token, queryOrgs)
+		result, err := h.Client.ListAllIssues(r.Context(), token, queryOrgs, selectedState, page)
 		if err != nil {
 			slog.Error("failed to list issues", "error", err)
 			data.Error = "Error loading issues."
 		} else {
-			data.Issues = issues
+			data.Issues = result.Issues
+			data.HasMore = result.HasMore
+			if result.HasMore {
+				data.NextPage = page + 1
+			}
 		}
 	}
 
+	// For HTMX infinite-scroll requests (page > 1), return only the card fragment.
+	if isHTMX(r) && page > 1 {
+		tmpl, err := template.ParseFiles("internal/templates/issues.html")
+		if err != nil {
+			slog.Error("failed to parse issues template", "error", err)
+			http.Error(w, "template error", http.StatusInternalServerError)
+			return
+		}
+		var buf strings.Builder
+		if err := tmpl.ExecuteTemplate(&buf, "cards", data); err != nil {
+			slog.Error("failed to execute issues cards template", "error", err)
+			http.Error(w, "template error", http.StatusInternalServerError)
+			return
+		}
+		w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		fmt.Fprint(w, buf.String())
+		return
+	}
+
 	tmpl, err := template.ParseFiles("internal/templates/issues.html")
 	if err != nil {
 		slog.Error("failed to parse issues template", "error", err)
@@ -296,10 +323,16 @@ func (h *Handler) ListPulls(w http.ResponseWriter, r *http.Request) {
 		Pulls       []giteaclient.PullRequest
 		Orgs        []string
 		SelectedOrg string
+		HasMore     bool
+		NextPage    int
 		Error       string
 	}
 
 	selectedOrg := r.URL.Query().Get("org")
+	page, _ := strconv.Atoi(r.URL.Query().Get("page"))
+	if page < 1 {
+		page = 1
+	}
 
 	data := pullsData{
 		Orgs:        orgNames,
@@ -314,15 +347,38 @@ func (h *Handler) ListPulls(w http.ResponseWriter, r *http.Request) {
 			queryOrgs = []string{selectedOrg}
 		}
 
-		prs, err := h.Client.ListAllPullRequests(r.Context(), token, queryOrgs)
+		result, err := h.Client.ListAllPullRequests(r.Context(), token, queryOrgs, "open", page)
 		if err != nil {
 			slog.Error("failed to list pull requests", "error", err)
 			data.Error = "Error loading pull requests."
 		} else {
-			data.Pulls = prs
+			data.Pulls = result.Pulls
+			data.HasMore = result.HasMore
+			if result.HasMore {
+				data.NextPage = page + 1
+			}
 		}
 	}
 
+	// For HTMX infinite-scroll requests (page > 1), return only the card fragment.
+	if isHTMX(r) && page > 1 {
+		tmpl, err := template.ParseFiles("internal/templates/pulls.html")
+		if err != nil {
+			slog.Error("failed to parse pulls template", "error", err)
+			http.Error(w, "template error", http.StatusInternalServerError)
+			return
+		}
+		var buf strings.Builder
+		if err := tmpl.ExecuteTemplate(&buf, "cards", data); err != nil {
+			slog.Error("failed to execute pulls cards template", "error", err)
+			http.Error(w, "template error", http.StatusInternalServerError)
+			return
+		}
+		w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		fmt.Fprint(w, buf.String())
+		return
+	}
+
 	tmpl, err := template.ParseFiles("internal/templates/pulls.html")
 	if err != nil {
 		slog.Error("failed to parse pulls template", "error", err)