package mysql

import (
	"errors"

	"gorm.io/gorm"
	"myschools.me/heritage/heritage-api/model"
)

func DeviceCreate(d *model.Device) error {
	db, err := newDB()
	if err != nil {
		return err
	}
	return db.Create(d).Error
}

func DeviceUpdate(d *model.Device) (bool, error) {
	db, err := newDB()
	if err != nil {
		return false, err
	}
	tx := db.Model(&model.Device{}).Where("id = ? AND deleted = false", d.ID).Updates(d)
	if tx.Error != nil {
		return false, tx.Error
	}
	return tx.RowsAffected > 0, nil
}

func DeviceDelete(id *string) (bool, error) {
	db, err := newDB()
	if err != nil {
		return false, err
	}
	tx := db.Model(&model.Device{}).Where("id = ? AND deleted = false", *id).Update("deleted", true)
	if tx.Error != nil {
		return false, tx.Error
	}
	return tx.RowsAffected > 0, nil
}

func DeviceByID(id *string) (*model.Device, bool, error) {
	db, err := newDB()
	if err != nil {
		return nil, false, err
	}
	var d model.Device
	if err := db.Where("id = ? AND deleted = false", *id).First(&d).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, false, nil
		}
		return nil, false, err
	}
	return &d, true, nil
}

func DeviceList(keyword *string, offset, limit *int) ([]model.Device, int64, error) {
	db, err := newDB()
	if err != nil {
		return nil, 0, err
	}
	q := db.Model(&model.Device{}).Where("deleted = false")
	if keyword != nil && *keyword != "" {
		kw := "%" + *keyword + "%"
		q = q.Where("name LIKE ? OR serial_no LIKE ?", kw, kw)
	}

	var total int64
	if err := q.Count(&total).Error; err != nil {
		return nil, 0, err
	}

	var items []model.Device
	if err := q.Order("created_at desc").Offset(*offset).Limit(*limit).Find(&items).Error; err != nil {
		return nil, 0, err
	}
	return items, total, nil
}