#TabMan

This is a table manager for restaurants. Restaurants can:

1. Create floors and add tables of 4 types on them.
2. The app makes sure the tables do not overlap.
3. Floors can be saved and can be edited.
4. Tables can change position on editing of saved floor and add more tables.

To install the app:

1. Install Cocoapods
2. clone the repo
3. Do a pod install
4. Start the app from TabMan.xcworkspace
5. iOS 9.2 is minimum version needed to run the app.
6. Use Xcode 7.2

How the code is organized:

The project is divided into the following:

1. Utils

• DragDropManager: Manages the whole drag and drop in the system. Takes decision on adding and delete of Tables based on its start and destination superviews. Also, puts back a view to its picked up location if it ended on invalid location. It uses UIPanGestureRecognizer to handle drag gestures.
• DragContext: The current drag context. It has all information of the current dragged view.
• GroupManager: Manages the creation of table groups. Table groups are a group of selected tables by the user inside a single border.

2. Views

• TableImageView: Subclass of UIImageView which changes image based on the type of the table.

3. Models

• Table: Stores information about a table like table type, table location on floor, area and number.
• Floor: It stores the floor id and a list of Table which are kept on the floor.

4. ViewController: Handles the button press actions, decides what to do based on when the save button was pressed, decides when to show the saved floor selector UITableView and when to show the table type selector.

5. Main.storyboard: Autolayout is used to layout views. The size of the table picker is kept constant and the size of the floor changes in different screen sizes.

Design Decisions

1. I used realm for percistance because of its simplicity and readability.
2. The drag and drop is handled in a separate class DragDropManager to avoid large viewController.
3. Group management is handled in a separate class GroupManager.
4. While making this came to know a lot about convex hull as well as concave hull algorithms. Though they were not used in this project.

Third Party Library

1. Realm
2. Took idea on how to drag and drop from view to another here
3. Took help from stackoverflow to create the hull here