// Code generated by sqlc. DO NOT EDIT.
// versions:
//   sqlc v1.31.1
// source: categories.sql

package sqlc

import (
	"context"
)

const countCategories = `-- name: CountCategories :one
SELECT COUNT(*)
FROM categories
`

func (q *Queries) CountCategories(ctx context.Context) (int64, error) {
	row := q.db.QueryRow(ctx, countCategories)
	var count int64
	err := row.Scan(&count)
	return count, err
}

const createCategory = `-- name: CreateCategory :exec
INSERT INTO categories(name, code, sort)
VALUES ($1, $2, $3)
`

type CreateCategoryParams struct {
	Name string `json:"name"`
	Code string `json:"code"`
	Sort *int32 `json:"sort"`
}

func (q *Queries) CreateCategory(ctx context.Context, arg CreateCategoryParams) error {
	_, err := q.db.Exec(ctx, createCategory, arg.Name, arg.Code, arg.Sort)
	return err
}

const createPostCategory = `-- name: CreatePostCategory :exec
INSERT INTO post_category(post_id, category_id)
VALUES ($1, $2)
`

type CreatePostCategoryParams struct {
	PostID     int32 `json:"post_id"`
	CategoryID int32 `json:"category_id"`
}

func (q *Queries) CreatePostCategory(ctx context.Context, arg CreatePostCategoryParams) error {
	_, err := q.db.Exec(ctx, createPostCategory, arg.PostID, arg.CategoryID)
	return err
}

const deleteCategory = `-- name: DeleteCategory :execrows
DELETE
FROM categories
WHERE id = $1
`

func (q *Queries) DeleteCategory(ctx context.Context, id int32) (int64, error) {
	result, err := q.db.Exec(ctx, deleteCategory, id)
	if err != nil {
		return 0, err
	}
	return result.RowsAffected(), nil
}

const deletePostCategoryByCategoryID = `-- name: DeletePostCategoryByCategoryID :exec
DELETE
FROM post_category
WHERE category_id = $1
`

func (q *Queries) DeletePostCategoryByCategoryID(ctx context.Context, categoryID int32) error {
	_, err := q.db.Exec(ctx, deletePostCategoryByCategoryID, categoryID)
	return err
}

const deletePostCategoryByPostID = `-- name: DeletePostCategoryByPostID :exec
DELETE
FROM post_category
WHERE post_id = $1
`

func (q *Queries) DeletePostCategoryByPostID(ctx context.Context, postID int32) error {
	_, err := q.db.Exec(ctx, deletePostCategoryByPostID, postID)
	return err
}

const listAllCategories = `-- name: ListAllCategories :many
SELECT id, name, code, sort, created_at, updated_at
FROM categories
ORDER BY sort DESC, id
`

func (q *Queries) ListAllCategories(ctx context.Context) ([]Category, error) {
	rows, err := q.db.Query(ctx, listAllCategories)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	items := []Category{}
	for rows.Next() {
		var i Category
		if err := rows.Scan(
			&i.ID,
			&i.Name,
			&i.Code,
			&i.Sort,
			&i.CreatedAt,
			&i.UpdatedAt,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const listCategories = `-- name: ListCategories :many
SELECT id, name, code, sort, created_at, updated_at
FROM categories
ORDER BY sort DESC, id
LIMIT $1 OFFSET $2
`

type ListCategoriesParams struct {
	Limit  int32 `json:"limit"`
	Offset int32 `json:"offset"`
}

func (q *Queries) ListCategories(ctx context.Context, arg ListCategoriesParams) ([]Category, error) {
	rows, err := q.db.Query(ctx, listCategories, arg.Limit, arg.Offset)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	items := []Category{}
	for rows.Next() {
		var i Category
		if err := rows.Scan(
			&i.ID,
			&i.Name,
			&i.Code,
			&i.Sort,
			&i.CreatedAt,
			&i.UpdatedAt,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const updateCategory = `-- name: UpdateCategory :execrows
UPDATE categories
SET name = coalesce($1, name),
    code = coalesce($2, code),
    sort = coalesce($3, sort)
WHERE id = $4
`

type UpdateCategoryParams struct {
	Name *string `json:"name"`
	Code *string `json:"code"`
	Sort *int32  `json:"sort"`
	ID   int32   `json:"id"`
}

func (q *Queries) UpdateCategory(ctx context.Context, arg UpdateCategoryParams) (int64, error) {
	result, err := q.db.Exec(ctx, updateCategory,
		arg.Name,
		arg.Code,
		arg.Sort,
		arg.ID,
	)
	if err != nil {
		return 0, err
	}
	return result.RowsAffected(), nil
}