/*
 * Copyright (C) 2015 - 2017, Daniel Dahan and CosmicMind, Inc. <http://cosmicmind.io>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *	*	Redistributions of source code must retain the above copyright notice, this
 *		list of conditions and the following disclaimer.
 *
 *	*	Redistributions in binary form must reproduce the above copyright notice,
 *		this list of conditions and the following disclaimer in the documentation
 *		and/or other materials provided with the distribution.
 *
 *	*	Neither the name of CosmicMind nor the names of its
 *		contributors may be used to endorse or promote products derived from
 *		this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import UIKit

public protocol TableViewDelegate: UITableViewDelegate {}

public protocol TableViewDataSource: UITableViewDataSource {
    /**
     Retrieves the data source items for the tableView.
     - Returns: An Array of DataSourceItem objects.
     */
    var dataSourceItems: [DataSourceItem] { get }
}

extension UIViewController {
    /**
     A convenience property that provides access to the TableViewController.
     This is the recommended method of accessing the TableViewController
     through child UIViewControllers.
     */
    public var tableViewController: TableViewController? {
        var viewController: UIViewController? = self
        while nil != viewController {
            if viewController is TableViewController {
                return viewController as? TableViewController
            }
            viewController = viewController?.parent
        }
        return nil
    }
}

open class TableViewController: UIViewController {
    /// A reference to a Reminder.
    open let tableView = TableView()
    
    /// An Array of DataSourceItems.
    open var dataSourceItems = [DataSourceItem]()
    
    open override func viewDidLoad() {
        super.viewDidLoad()
        prepare()
    }
    
    /**
     Prepares the view instance when intialized. When subclassing,
     it is recommended to override the prepareView method
     to initialize property values and other setup operations.
     The super.prepareView method should always be called immediately
     when subclassing.
     */
    open func prepare() {
        view.clipsToBounds = true
        view.backgroundColor = .white
        view.contentScaleFactor = Screen.scale
        prepareTableView()
    }
}

extension TableViewController {
    /// Prepares the tableView.
    fileprivate func prepareTableView() {
        tableView.delegate = self
        tableView.dataSource = self
        view.layout(tableView).edges()
    }
}

extension TableViewController: TableViewDelegate {}

extension TableViewController: TableViewDataSource {
    @objc
    open func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    @objc
    open func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return dataSourceItems.count
    }
    
    @objc
    open func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        return UITableViewCell()
    }
}
