package mysql

import (
	"context"
	"strings"

	storepb "github.com/usememos/memos/proto/gen/store"
	"github.com/usememos/memos/store"
)

func (d *DB) UpsertUserSetting(ctx context.Context, upsert *store.UserSetting) (*store.UserSetting, error) {
	stmt := "INSERT INTO `user_setting` (`user_id`, `key`, `value`) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE `value` = ?"
	if _, err := d.db.ExecContext(ctx, stmt, upsert.UserID, upsert.Key.String(), upsert.Value, upsert.Value); err != nil {
		return nil, err
	}
	return upsert, nil
}

func (d *DB) ListUserSettings(ctx context.Context, find *store.FindUserSetting) ([]*store.UserSetting, error) {
	where, args := []string{"1 = 1"}, []any{}

	if v := find.Key; v != storepb.UserSettingKey_USER_SETTING_KEY_UNSPECIFIED {
		where, args = append(where, "`key` = ?"), append(args, v.String())
	}
	if v := find.UserID; v != nil {
		where, args = append(where, "`user_id` = ?"), append(args, *find.UserID)
	}

	query := "SELECT `user_id`, `key`, `value` FROM `user_setting` WHERE " + strings.Join(where, " AND ")
	rows, err := d.db.QueryContext(ctx, query, args...)
	if err != nil {
		return nil, err
	}
	defer rows.Close()

	userSettingList := make([]*store.UserSetting, 0)
	for rows.Next() {
		userSetting := &store.UserSetting{}
		var keyString string
		if err := rows.Scan(
			&userSetting.UserID,
			&keyString,
			&userSetting.Value,
		); err != nil {
			return nil, err
		}
		userSetting.Key = storepb.UserSettingKey(storepb.UserSettingKey_value[keyString])
		userSettingList = append(userSettingList, userSetting)
	}

	if err := rows.Err(); err != nil {
		return nil, err
	}

	return userSettingList, nil
}