feat: add CountPostsOfSite query and DB method

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

providers/db/gen/sqlgen/posts.sql.go

@@ -9,6 +9,28 @@ import (
 	"context"
 )
 
+const countPostsOfSite = `-- name: CountPostsOfSite :one
+SELECT COUNT(*) FROM posts
+WHERE site_id = ?1 AND (
+    CASE CAST (?2 AS TEXT)
+        WHEN 'deleted' THEN deleted_at > 0
+        ELSE deleted_at = 0
+    END
+)
+`
+
+type CountPostsOfSiteParams struct {
+	SiteID     int64
+	PostFilter string
+}
+
+func (q *Queries) CountPostsOfSite(ctx context.Context, arg CountPostsOfSiteParams) (int64, error) {
+	row := q.db.QueryRowContext(ctx, countPostsOfSite, arg.SiteID, arg.PostFilter)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
 const hardDeletePost = `-- name: HardDeletePost :exec
 DELETE FROM posts WHERE id = ?
 `

providers/db/posts.go

@@ -13,6 +13,17 @@ type PagingParams struct {
 	Offset int64
 }
 
+func (db *Provider) CountPostsOfSite(ctx context.Context, siteID int64, showDeleted bool) (int64, error) {
+	filter := "active"
+	if showDeleted {
+		filter = "deleted"
+	}
+	return db.queries.CountPostsOfSite(ctx, sqlgen.CountPostsOfSiteParams{
+		SiteID:     siteID,
+		PostFilter: filter,
+	})
+}
+
 func (db *Provider) SelectPostsOfSite(ctx context.Context, siteID int64, showDeleted bool, pp PagingParams) ([]*models.Post, error) {
 	var filter = ""
 	if showDeleted {

providers/db/provider_test.go

@@ -3,6 +3,7 @@ package db_test
 import (
 	"context"
 	"encoding/base64"
+	"fmt"
 	"path/filepath"
 	"testing"
 	"time"
@@ -229,6 +230,45 @@ func TestProvider_Posts(t *testing.T) {
 		require.NoError(t, err)
 		assert.Empty(t, posts)
 	})
+
+	t.Run("count posts of site", func(t *testing.T) {
+		countSite := &models.Site{
+			OwnerID: user.ID,
+			GUID:    models.NewNanoID(),
+			Title:   "Count Blog",
+		}
+		require.NoError(t, p.SaveSite(ctx, countSite))
+
+		now := time.Date(2026, 3, 22, 12, 0, 0, 0, time.UTC)
+		for i := 0; i < 3; i++ {
+			post := &models.Post{
+				SiteID:    countSite.ID,
+				GUID:      models.NewNanoID(),
+				Title:     fmt.Sprintf("Post %d", i),
+				Body:      "body",
+				Slug:      fmt.Sprintf("/post-%d", i),
+				CreatedAt: now,
+			}
+			require.NoError(t, p.SavePost(ctx, post))
+		}
+
+		count, err := p.CountPostsOfSite(ctx, countSite.ID, false)
+		require.NoError(t, err)
+		assert.Equal(t, int64(3), count)
+
+		// Soft-delete one post
+		posts, err := p.SelectPostsOfSite(ctx, countSite.ID, false, db.PagingParams{Limit: 10, Offset: 0})
+		require.NoError(t, err)
+		require.NoError(t, p.SoftDeletePost(ctx, posts[0].ID))
+
+		count, err = p.CountPostsOfSite(ctx, countSite.ID, false)
+		require.NoError(t, err)
+		assert.Equal(t, int64(2), count)
+
+		count, err = p.CountPostsOfSite(ctx, countSite.ID, true)
+		require.NoError(t, err)
+		assert.Equal(t, int64(1), count)
+	})
 }
 
 func TestProvider_PublishTargets(t *testing.T) {

sql/queries/posts.sql

@@ -1,3 +1,12 @@
+-- name: CountPostsOfSite :one
+SELECT COUNT(*) FROM posts
+WHERE site_id = sqlc.arg(site_id) AND (
+    CASE CAST (sqlc.arg(post_filter) AS TEXT)
+        WHEN 'deleted' THEN deleted_at > 0
+        ELSE deleted_at = 0
+    END
+);
+
 -- name: SelectPostsOfSite :many
 SELECT *
 FROM posts