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

package dbgen

import (
	"context"

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

const CreateLesson = `-- name: CreateLesson :one
INSERT INTO lessons (module_id, title, video_url, thumbnail, description, sort_order)
SELECT
    $1,
    $2,
    $3,
    $4,
    $5,
    COALESCE($6::int,
        COALESCE((
            SELECT
                max(l.sort_order)
            FROM lessons l
            WHERE
                l.module_id = $1), 0) + 1)
RETURNING
    id, module_id, title, video_url, thumbnail, description, created_at, updated_at, sort_order
`

type CreateLessonParams struct {
	ModuleID    int64       `json:"module_id"`
	Title       string      `json:"title"`
	VideoUrl    pgtype.Text `json:"video_url"`
	Thumbnail   pgtype.Text `json:"thumbnail"`
	Description pgtype.Text `json:"description"`
	SortOrder   pgtype.Int4 `json:"sort_order"`
}

func (q *Queries) CreateLesson(ctx context.Context, arg CreateLessonParams) (Lesson, error) {
	row := q.db.QueryRow(ctx, CreateLesson,
		arg.ModuleID,
		arg.Title,
		arg.VideoUrl,
		arg.Thumbnail,
		arg.Description,
		arg.SortOrder,
	)
	var i Lesson
	err := row.Scan(
		&i.ID,
		&i.ModuleID,
		&i.Title,
		&i.VideoUrl,
		&i.Thumbnail,
		&i.Description,
		&i.CreatedAt,
		&i.UpdatedAt,
		&i.SortOrder,
	)
	return i, err
}

const DeleteLesson = `-- name: DeleteLesson :exec
DELETE FROM lessons
WHERE id = $1
`

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

const GetLessonByID = `-- name: GetLessonByID :one
SELECT
    l.id, l.module_id, l.title, l.video_url, l.thumbnail, l.description, l.created_at, l.updated_at, l.sort_order,
    EXISTS (
        SELECT 1
        FROM lms_practices p
        WHERE p.lesson_id = l.id
          AND p.publish_status = 'PUBLISHED'
    ) AS has_practice
FROM lessons
    l
WHERE l.id = $1
`

type GetLessonByIDRow struct {
	ID          int64              `json:"id"`
	ModuleID    int64              `json:"module_id"`
	Title       string             `json:"title"`
	VideoUrl    pgtype.Text        `json:"video_url"`
	Thumbnail   pgtype.Text        `json:"thumbnail"`
	Description pgtype.Text        `json:"description"`
	CreatedAt   pgtype.Timestamptz `json:"created_at"`
	UpdatedAt   pgtype.Timestamptz `json:"updated_at"`
	SortOrder   int32              `json:"sort_order"`
	HasPractice bool               `json:"has_practice"`
}

func (q *Queries) GetLessonByID(ctx context.Context, id int64) (GetLessonByIDRow, error) {
	row := q.db.QueryRow(ctx, GetLessonByID, id)
	var i GetLessonByIDRow
	err := row.Scan(
		&i.ID,
		&i.ModuleID,
		&i.Title,
		&i.VideoUrl,
		&i.Thumbnail,
		&i.Description,
		&i.CreatedAt,
		&i.UpdatedAt,
		&i.SortOrder,
		&i.HasPractice,
	)
	return i, err
}

const ListLessonsByModuleID = `-- name: ListLessonsByModuleID :many
SELECT
    COUNT(*) OVER () AS total_count,
    l.id,
    l.module_id,
    l.title,
    l.video_url,
    l.thumbnail,
    l.description,
    l.sort_order,
    l.created_at,
    l.updated_at,
    EXISTS (
        SELECT 1
        FROM lms_practices p
        WHERE p.lesson_id = l.id
          AND p.publish_status = 'PUBLISHED'
    ) AS has_practice
FROM
    lessons l
WHERE
    l.module_id = $1
ORDER BY
    l.sort_order ASC,
    l.id ASC
LIMIT $2
OFFSET $3
`

type ListLessonsByModuleIDParams struct {
	ModuleID int64 `json:"module_id"`
	Limit    int32 `json:"limit"`
	Offset   int32 `json:"offset"`
}

type ListLessonsByModuleIDRow struct {
	TotalCount  int64              `json:"total_count"`
	ID          int64              `json:"id"`
	ModuleID    int64              `json:"module_id"`
	Title       string             `json:"title"`
	VideoUrl    pgtype.Text        `json:"video_url"`
	Thumbnail   pgtype.Text        `json:"thumbnail"`
	Description pgtype.Text        `json:"description"`
	SortOrder   int32              `json:"sort_order"`
	CreatedAt   pgtype.Timestamptz `json:"created_at"`
	UpdatedAt   pgtype.Timestamptz `json:"updated_at"`
	HasPractice bool               `json:"has_practice"`
}

func (q *Queries) ListLessonsByModuleID(ctx context.Context, arg ListLessonsByModuleIDParams) ([]ListLessonsByModuleIDRow, error) {
	rows, err := q.db.Query(ctx, ListLessonsByModuleID, arg.ModuleID, arg.Limit, arg.Offset)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	var items []ListLessonsByModuleIDRow
	for rows.Next() {
		var i ListLessonsByModuleIDRow
		if err := rows.Scan(
			&i.TotalCount,
			&i.ID,
			&i.ModuleID,
			&i.Title,
			&i.VideoUrl,
			&i.Thumbnail,
			&i.Description,
			&i.SortOrder,
			&i.CreatedAt,
			&i.UpdatedAt,
			&i.HasPractice,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const UpdateLesson = `-- name: UpdateLesson :one
UPDATE lessons
SET
    title = COALESCE($1::varchar, title),
    video_url = COALESCE($2::text, video_url),
    thumbnail = COALESCE($3::text, thumbnail),
    description = COALESCE($4::text, description),
    sort_order = coalesce($5::int, sort_order),
    updated_at = CURRENT_TIMESTAMP
WHERE
    id = $6
RETURNING
    id, module_id, title, video_url, thumbnail, description, created_at, updated_at, sort_order
`

type UpdateLessonParams struct {
	Title       pgtype.Text `json:"title"`
	VideoUrl    pgtype.Text `json:"video_url"`
	Thumbnail   pgtype.Text `json:"thumbnail"`
	Description pgtype.Text `json:"description"`
	SortOrder   pgtype.Int4 `json:"sort_order"`
	ID          int64       `json:"id"`
}

func (q *Queries) UpdateLesson(ctx context.Context, arg UpdateLessonParams) (Lesson, error) {
	row := q.db.QueryRow(ctx, UpdateLesson,
		arg.Title,
		arg.VideoUrl,
		arg.Thumbnail,
		arg.Description,
		arg.SortOrder,
		arg.ID,
	)
	var i Lesson
	err := row.Scan(
		&i.ID,
		&i.ModuleID,
		&i.Title,
		&i.VideoUrl,
		&i.Thumbnail,
		&i.Description,
		&i.CreatedAt,
		&i.UpdatedAt,
		&i.SortOrder,
	)
	return i, err
}