added media fixes, search, push updates, pwa, metrics. preparing release 1.0

server/internal/store/search.go

@@ -0,0 +1,50 @@
+package store
+
+import (
+	"context"
+)
+
+// MessageHit is a search result: a message scoped to the member's
+// conversations, with its conversation context.
+type MessageHit struct {
+	Message
+	ConversationType string
+	ConversationName string
+}
+
+// SearchMessages finds messages matching query in conversations the user
+// belongs to, newest first. ILIKE substring matching keeps the search
+// dependency-free at family scale; pg_trgm is the documented scaling path.
+func (s *Store) SearchMessages(ctx context.Context, userID int64, query string, limit int) ([]MessageHit, error) {
+	if query == "" {
+		return nil, nil
+	}
+	pattern := "%" + query + "%"
+	rows, err := s.pool.Query(ctx, `
+       SELECT m.id, m.conversation_id, m.sender_id, m.body, m.media_id, m.created_at, m.edited_at, m.deleted_at,
+              c.type, c.name
+       FROM messages m
+       JOIN conversation_members cm ON cm.conversation_id = m.conversation_id AND cm.user_id = $1
+       JOIN conversations c ON c.id = m.conversation_id
+       WHERE m.body ILIKE $2
+       ORDER BY m.id DESC
+       LIMIT $3
+   `, userID, pattern, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var hits []MessageHit
+	for rows.Next() {
+		var h MessageHit
+		if err := rows.Scan(
+			&h.ID, &h.ConversationID, &h.SenderID, &h.Body, &h.MediaID, &h.CreatedAt, &h.EditedAt, &h.DeletedAt,
+			&h.ConversationType, &h.ConversationName,
+		); err != nil {
+			return nil, err
+		}
+		hits = append(hits, h)
+	}
+	return hits, nil
+}