feat: add sqlc queries for categories

sql/queries/categories.sql

@@ -0,0 +1,53 @@
+-- name: SelectCategoriesOfSite :many
+SELECT * FROM categories
+WHERE site_id = ? ORDER BY name ASC;
+
+-- name: SelectCategory :one
+SELECT * FROM categories WHERE id = ? LIMIT 1;
+
+-- name: SelectCategoryByGUID :one
+SELECT * FROM categories WHERE guid = ? LIMIT 1;
+
+-- name: SelectCategoryBySlugAndSite :one
+SELECT * FROM categories WHERE site_id = ? AND slug = ? LIMIT 1;
+
+-- name: SelectCategoriesOfPost :many
+SELECT c.* FROM categories c
+INNER JOIN post_categories pc ON pc.category_id = c.id
+WHERE pc.post_id = ?
+ORDER BY c.name ASC;
+
+-- name: SelectPostsOfCategory :many
+SELECT p.* FROM posts p
+INNER JOIN post_categories pc ON pc.post_id = p.id
+WHERE pc.category_id = ? AND p.state = 0 AND p.deleted_at = 0
+ORDER BY p.published_at DESC
+LIMIT ? OFFSET ?;
+
+-- name: CountPostsOfCategory :one
+SELECT COUNT(*) FROM posts p
+INNER JOIN post_categories pc ON pc.post_id = p.id
+WHERE pc.category_id = ? AND p.state = 0 AND p.deleted_at = 0;
+
+-- name: InsertCategory :one
+INSERT INTO categories (
+    site_id, guid, name, slug, description, created_at, updated_at
+) VALUES (?, ?, ?, ?, ?, ?, ?)
+RETURNING id;
+
+-- name: UpdateCategory :exec
+UPDATE categories SET
+    name = ?,
+    slug = ?,
+    description = ?,
+    updated_at = ?
+WHERE id = ?;
+
+-- name: DeleteCategory :exec
+DELETE FROM categories WHERE id = ?;
+
+-- name: InsertPostCategory :exec
+INSERT OR IGNORE INTO post_categories (post_id, category_id) VALUES (?, ?);
+
+-- name: DeletePostCategoriesByPost :exec
+DELETE FROM post_categories WHERE post_id = ?;