// Code generated by sqlc. DO NOT EDIT.
// versions:
//   sqlc v1.30.0
// source: courses.sql

package dbgen

import (
	"context"

	"github.com/jackc/pgx/v5/pgtype"
)

const CreateCourse = `-- name: CreateCourse :one
INSERT INTO courses (
    category_id,
    title,
    description,
    is_active
)
VALUES ($1, $2, $3, COALESCE($4, true))
RETURNING id, category_id, title, description, is_active
`

type CreateCourseParams struct {
	CategoryID  int64       `json:"category_id"`
	Title       string      `json:"title"`
	Description pgtype.Text `json:"description"`
	Column4     interface{} `json:"column_4"`
}

func (q *Queries) CreateCourse(ctx context.Context, arg CreateCourseParams) (Course, error) {
	row := q.db.QueryRow(ctx, CreateCourse,
		arg.CategoryID,
		arg.Title,
		arg.Description,
		arg.Column4,
	)
	var i Course
	err := row.Scan(
		&i.ID,
		&i.CategoryID,
		&i.Title,
		&i.Description,
		&i.IsActive,
	)
	return i, err
}

const DeleteCourse = `-- name: DeleteCourse :exec
DELETE FROM courses
WHERE id = $1
`

func (q *Queries) DeleteCourse(ctx context.Context, id int64) error {
	_, err := q.db.Exec(ctx, DeleteCourse, id)
	return err
}

const GetCourseByID = `-- name: GetCourseByID :one
SELECT id, category_id, title, description, is_active
FROM courses
WHERE id = $1
`

func (q *Queries) GetCourseByID(ctx context.Context, id int64) (Course, error) {
	row := q.db.QueryRow(ctx, GetCourseByID, id)
	var i Course
	err := row.Scan(
		&i.ID,
		&i.CategoryID,
		&i.Title,
		&i.Description,
		&i.IsActive,
	)
	return i, err
}

const GetCoursesByCategory = `-- name: GetCoursesByCategory :many
SELECT
    COUNT(*) OVER () AS total_count,
    id,
    category_id,
    title,
    description,
    is_active
FROM courses
WHERE category_id = $1
ORDER BY id DESC
LIMIT $3::INT
OFFSET $2::INT
`

type GetCoursesByCategoryParams struct {
	CategoryID int64       `json:"category_id"`
	Offset     pgtype.Int4 `json:"offset"`
	Limit      pgtype.Int4 `json:"limit"`
}

type GetCoursesByCategoryRow struct {
	TotalCount  int64       `json:"total_count"`
	ID          int64       `json:"id"`
	CategoryID  int64       `json:"category_id"`
	Title       string      `json:"title"`
	Description pgtype.Text `json:"description"`
	IsActive    bool        `json:"is_active"`
}

func (q *Queries) GetCoursesByCategory(ctx context.Context, arg GetCoursesByCategoryParams) ([]GetCoursesByCategoryRow, error) {
	rows, err := q.db.Query(ctx, GetCoursesByCategory, arg.CategoryID, arg.Offset, arg.Limit)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	var items []GetCoursesByCategoryRow
	for rows.Next() {
		var i GetCoursesByCategoryRow
		if err := rows.Scan(
			&i.TotalCount,
			&i.ID,
			&i.CategoryID,
			&i.Title,
			&i.Description,
			&i.IsActive,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const UpdateCourse = `-- name: UpdateCourse :exec
UPDATE courses
SET
    title = COALESCE($1, title),
    description = COALESCE($2, description),
    is_active = COALESCE($3, is_active)
WHERE id = $4
`

type UpdateCourseParams struct {
	Title       string      `json:"title"`
	Description pgtype.Text `json:"description"`
	IsActive    bool        `json:"is_active"`
	ID          int64       `json:"id"`
}

func (q *Queries) UpdateCourse(ctx context.Context, arg UpdateCourseParams) error {
	_, err := q.db.Exec(ctx, UpdateCourse,
		arg.Title,
		arg.Description,
		arg.IsActive,
		arg.ID,
	)
	return err
}