// MIT License

//

// Copyright (c) 2017-2019 MessageKit

//

// Permission is hereby granted, free of charge, to any person obtaining a copy

// of this software and associated documentation files (the "Software"), to deal

// in the Software without restriction, including without limitation the rights

// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

// copies of the Software, and to permit persons to whom the Software is

// furnished to do so, subject to the following conditions:

//

// The above copyright notice and this permission notice shall be included in all

// copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

// SOFTWARE.

import UIKit

/// A subclass of `MessageContentCell` used to display text messages.

open class TextMessageCell: MessageContentCell {

/// The label used to display the message's text.

open var messageLabel = MessageLabel()

// MARK: - Properties

/// The `MessageCellDelegate` for the cell.

open override weak var delegate: MessageCellDelegate? {

didSet {

messageLabel.delegate = delegate

}

}

// MARK: - Methods

open override func apply(_ layoutAttributes: UICollectionViewLayoutAttributes) {

super.apply(layoutAttributes)

if let attributes = layoutAttributes as? MessagesCollectionViewLayoutAttributes {

messageLabel.textInsets = attributes.messageLabelInsets

messageLabel.messageLabelFont = attributes.messageLabelFont

messageLabel.frame = messageContainerView.bounds

}

}

open override func prepareForReuse() {

super.prepareForReuse()

messageLabel.attributedText = nil

messageLabel.text = nil

}

open override func setupSubviews() {

super.setupSubviews()

messageContainerView.addSubview(messageLabel)

}

open override func configure(

with message: MessageType,

at indexPath: IndexPath,

and messagesCollectionView: MessagesCollectionView)

{

super.configure(with: message, at: indexPath, and: messagesCollectionView)

guard let displayDelegate = messagesCollectionView.messagesDisplayDelegate else {

fatalError(MessageKitError.nilMessagesDisplayDelegate)

}

let enabledDetectors = displayDelegate.enabledDetectors(for: message, at: indexPath, in: messagesCollectionView)

messageLabel.configure {

messageLabel.enabledDetectors = enabledDetectors

for detector in enabledDetectors {

let attributes = displayDelegate.detectorAttributes(for: detector, and: message, at: indexPath)

messageLabel.setAttributes(attributes, detector: detector)

}

let textMessageKind = message.kind.textMessageKind

switch textMessageKind {

case .text(let text), .emoji(let text):

let textColor = displayDelegate.textColor(for: message, at: indexPath, in: messagesCollectionView)

messageLabel.text = text

messageLabel.textColor = textColor

if let font = messageLabel.messageLabelFont {

messageLabel.font = font

}

case .attributedText(let text):

messageLabel.attributedText = text

default:

break

}

}

}

/// Used to handle the cell's contentView's tap gesture.

/// Return false when the contentView does not need to handle the gesture.

open override func cellContentView(canHandle touchPoint: CGPoint) -> Bool {

messageLabel.handleGesture(touchPoint)

}

}