/*
 * Copyright (C) 2015 - 2018, Daniel Dahan and CosmicMind, Inc. <http://cosmicmind.com>.
 * 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
import Material
import Graph

class CardTableView: UITableView {
  internal lazy var heights = [IndexPath: CGFloat]()
  
  public var data = [Entity]() {
    didSet {
      reloadData()
    }
  }
  
  /**
   An initializer that initializes the object with a NSCoder object.
   - Parameter aDecoder: A NSCoder instance.
   */
  public required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    prepare()
  }
  
  /// An initializer.
  public init() {
    super.init(frame: .zero, style: .plain)
    prepare()
  }
  
  /// Prepares the tableView.
  open func prepare() {
    delegate = self
    dataSource = self
    separatorStyle = .none
    backgroundColor = nil
    
    register(CardTableViewCell.self, forCellReuseIdentifier: "CardTableViewCell")
  }
}

extension CardTableView: UITableViewDataSource {
  func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return data.count
  }
  
  func numberOfSections(in tableView: UITableView) -> Int {
    return 1
  }
  
  /// Prepares the cells within the tableView.
  func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "CardTableViewCell", for: indexPath) as! CardTableViewCell
    cell.data = data[indexPath.row]
    cell.isLast = indexPath.row == data.count - 1
    heights[indexPath] = cell.bounds.height
    return cell
  }
}

extension CardTableView: UITableViewDelegate {
  func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    return heights[indexPath] ?? bounds.height
  }
}
