private RestaurantFullInfo findRestaurantByDistance(
CoordinatePosition userCoordinatePosition, Double currentDistance, Boolean isFarther) {
List<RestaurantFullInfo> restaurantFullInfoList = restaurantDAO.getAllRestaurantInfo();
Double minDistance = Double.MAX_VALUE;
RestaurantFullInfo selectedRestaurantFullInfo = null;
for (RestaurantFullInfo restaurantFullInfo : restaurantFullInfoList) {
Double restaurantDistance =
MathUtils.getDistance(userCoordinatePosition, restaurantFullInfo.getCoordinatePosition());
if ((isFarther
&& restaurantDistance > currentDistance
&& restaurantDistance < (currentDistance + minDistance))
|| (!isFarther
&& restaurantDistance < currentDistance
&& restaurantDistance > (currentDistance - minDistance))) {
selectedRestaurantFullInfo = restaurantFullInfo;
minDistance = Math.abs(restaurantDistance - currentDistance);
}
}
return selectedRestaurantFullInfo;
}
@Override
public TableInfo getNewRestaurant(RestaurantSelectParam restaurantSelectParam) {
CoordinatePosition userCoordinatePosition = new CoordinatePosition();
userCoordinatePosition.setLongitudeValue(restaurantSelectParam.getUserLongitude());
userCoordinatePosition.setLatitudeValue(restaurantSelectParam.getUserLatitude());
CoordinatePosition currentTableCoordinatePosition =
tableService.getTableCoordinatePosition(restaurantSelectParam.getTableId());
Double currentDistance =
MathUtils.getDistance(userCoordinatePosition, currentTableCoordinatePosition);
TableInfo tableInfo =
getNewRestaurant(
userCoordinatePosition, currentDistance, restaurantSelectParam.getIsFarther());
if (tableInfo != null) {
return tableInfo;
} else {
// todo 提示用户信息
return tableService.getTableInfo(restaurantSelectParam.getTableId());
}
}