/*
 * 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

open class Card: PulseView {
  /// A container view for subviews.
  public let container = UIView()
  
  @IBInspectable
  open override var cornerRadiusPreset: CornerRadiusPreset {
    didSet {
      container.cornerRadiusPreset = cornerRadiusPreset
    }
  }
  
  @IBInspectable
  open var cornerRadius: CGFloat {
    get {
      return container.layer.cornerRadius
    }
    set(value) {
      container.layer.cornerRadius = value
    }
  }
  
  open override var shapePreset: ShapePreset {
    didSet {
      container.shapePreset = shapePreset
    }
  }
  
  @IBInspectable
  open override var backgroundColor: UIColor? {
    didSet {
      container.backgroundColor = backgroundColor
    }
  }
  
  /// A reference to the toolbar.
  @IBInspectable
  open var toolbar: Toolbar? {
    didSet {
      oldValue?.removeFromSuperview()
      
      if let v = toolbar {
        container.addSubview(v)
      }
      
      layoutSubviews()
    }
  }
  
  /// A preset wrapper around toolbarEdgeInsets.
  open var toolbarEdgeInsetsPreset = EdgeInsetsPreset.none {
    didSet {
      toolbarEdgeInsets = EdgeInsetsPresetToValue(preset: toolbarEdgeInsetsPreset)
    }
  }
  
  /// A reference to toolbarEdgeInsets.
  @IBInspectable
  open var toolbarEdgeInsets = EdgeInsets.zero {
    didSet {
      layoutSubviews()
    }
  }
  
  /// A reference to the contentView.
  @IBInspectable
  open var contentView: UIView? {
    didSet {
      oldValue?.removeFromSuperview()
      
      if let v = contentView {
        v.clipsToBounds = true
        container.addSubview(v)
      }
      
      layoutSubviews()
    }
  }
  
  /// A preset wrapper around contentViewEdgeInsets.
  open var contentViewEdgeInsetsPreset = EdgeInsetsPreset.none {
    didSet {
      contentViewEdgeInsets = EdgeInsetsPresetToValue(preset: contentViewEdgeInsetsPreset)
    }
  }
  
  /// A reference to contentViewEdgeInsets.
  @IBInspectable
  open var contentViewEdgeInsets = EdgeInsets.zero {
    didSet {
      layoutSubviews()
    }
  }
  
  /// A reference to the bottomBar.
  @IBInspectable
  open var bottomBar: Bar? {
    didSet {
      oldValue?.removeFromSuperview()
      
      if let v = bottomBar {
        container.addSubview(v)
      }
      
      layoutSubviews()
    }
  }
  
  /// A preset wrapper around bottomBarEdgeInsets.
  open var bottomBarEdgeInsetsPreset = EdgeInsetsPreset.none {
    didSet {
      bottomBarEdgeInsets = EdgeInsetsPresetToValue(preset: bottomBarEdgeInsetsPreset)
    }
  }
  
  /// A reference to bottomBarEdgeInsets.
  @IBInspectable
  open var bottomBarEdgeInsets = EdgeInsets.zero {
    didSet {
      layoutSubviews()
    }
  }
  
  /**
   An initializer that accepts a NSCoder.
   - Parameter coder aDecoder: A NSCoder.
   */
  public required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
  }
  
  /**
   An initializer that accepts a CGRect.
   - Parameter frame: A CGRect.
   */
  public override init(frame: CGRect) {
    super.init(frame: frame)
  }
  
  /**
   A convenience initiazlier.
   - Parameter toolbar: An optional Toolbar.
   - Parameter contentView: An optional UIView.
   - Parameter bottomBar: An optional Bar.
   */
  public convenience init?(toolbar: Toolbar?, contentView: UIView?, bottomBar: Bar?) {
    self.init(frame: .zero)
    prepareProperties(toolbar: toolbar, contentView: contentView, bottomBar: bottomBar)
  }
  
  open override func layoutSubviews() {
    super.layoutSubviews()
    container.frame.size.width = bounds.width
    reload()
  }
  
  /// Reloads the layout.
  open func reload() {
    var h: CGFloat = 0
    
    if let v = toolbar {
      h = prepare(view: v, with: toolbarEdgeInsets, from: h)
    }
    
    if let v = contentView {
      h = prepare(view: v, with: contentViewEdgeInsets, from: h)
    }
    
    if let v = bottomBar {
      h = prepare(view: v, with: bottomBarEdgeInsets, from: h)
    }
    
    container.frame.size.height = h
    bounds.size.height = h
  }
  
  open override func prepare() {
    super.prepare()
    pulseAnimation = .none
    cornerRadiusPreset = .cornerRadius1
    
    prepareContainer()
  }
  
  /**
   Prepare the view size from a given top position.
   - Parameter view: A UIView.
   - Parameter edge insets: An EdgeInsets.
   - Parameter from top: A CGFloat.
   - Returns: A CGFloat.
   */
  @discardableResult
  open func prepare(view: UIView, with insets: EdgeInsets, from top: CGFloat) -> CGFloat {
    let y = insets.top + top
    
    view.frame.origin.y = y
    view.frame.origin.x = insets.left
    
    let w = container.bounds.width - insets.left - insets.right
    var h = view.bounds.height
    
    if 0 == h || nil != view as? UILabel {
      (view as? UILabel)?.sizeToFit()
      h = view.sizeThatFits(CGSize(width: w, height: .greatestFiniteMagnitude)).height
    }
    
    view.frame.size.width = w
    view.frame.size.height = h
    
    return y + h + insets.bottom
  }
  
  /**
   A preparation method that sets the base UI elements.
   - Parameter toolbar: An optional Toolbar.
   - Parameter contentView: An optional UIView.
   - Parameter bottomBar: An optional Bar.
   */
  internal func prepareProperties(toolbar: Toolbar?, contentView: UIView?, bottomBar: Bar?) {
    self.toolbar = toolbar
    self.contentView = contentView
    self.bottomBar = bottomBar
  }
}

extension Card {
  /// Prepares the container.
  fileprivate func prepareContainer() {
    container.clipsToBounds = true
    addSubview(container)
  }
}
