//
//  ComposeStatusContentTableViewCell.swift
//  Mastodon
//
//  Created by MainasuK Cirno on 2021-6-28.
//

import os.log
import UIKit
import Combine
import MetaTextKit
import UITextView_Placeholder
import MastodonAsset
import MastodonLocalization
import MastodonUI

//protocol ComposeStatusContentTableViewCellDelegate: AnyObject {
//    func composeStatusContentTableViewCell(_ cell: ComposeStatusContentTableViewCell, textViewShouldBeginEditing textView: UITextView) -> Bool
//}

final class ComposeStatusContentTableViewCell: UITableViewCell {

//    let logger = Logger(subsystem: "ComposeStatusContentTableViewCell", category: "View")
//
//    var disposeBag = Set<AnyCancellable>()
//    weak var delegate: ComposeStatusContentTableViewCellDelegate?
//
//    let statusView = StatusView()
//
//    let statusContentWarningEditorView = StatusContentWarningEditorView()
//
//    let textEditorViewContainerView = UIView()
//
//    static let metaTextViewTag: Int = 333
//    let metaText: MetaText = {
//        let metaText = MetaText()
//        metaText.textView.backgroundColor = .clear
//        metaText.textView.isScrollEnabled = false
//        metaText.textView.keyboardType = .twitter
//        metaText.textView.textDragInteraction?.isEnabled = false    // disable drag for link and attachment
//        metaText.textView.textContainer.lineFragmentPadding = 10    // leading inset
//        metaText.textView.font = UIFontMetrics(forTextStyle: .body).scaledFont(for: .systemFont(ofSize: 17, weight: .regular))
//        metaText.textView.attributedPlaceholder = {
//            var attributes = metaText.textAttributes
//            attributes[.foregroundColor] = Asset.Colors.Label.secondary.color
//            return NSAttributedString(
//                string: L10n.Scene.Compose.contentInputPlaceholder,
//                attributes: attributes
//            )
//        }()
//        metaText.paragraphStyle = {
//            let style = NSMutableParagraphStyle()
//            style.lineSpacing = 5
//            style.paragraphSpacing = 0
//            return style
//        }()
//        metaText.textAttributes = [
//            .font: UIFontMetrics(forTextStyle: .body).scaledFont(for: .systemFont(ofSize: 17, weight: .regular)),
//            .foregroundColor: Asset.Colors.Label.primary.color,
//        ]
//        metaText.linkAttributes = [
//            .font: UIFontMetrics(forTextStyle: .body).scaledFont(for: .systemFont(ofSize: 17, weight: .semibold)),
//            .foregroundColor: Asset.Colors.brand.color,
//        ]
//        return metaText
//    }()
//
//    // output
//    let contentWarningContent = PassthroughSubject<String, Never>()
//
//    override func prepareForReuse() {
//        super.prepareForReuse()
//
//        metaText.delegate = nil
//        metaText.textView.delegate = nil
//    }
//
//    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
//        super.init(style: style, reuseIdentifier: reuseIdentifier)
//        _init()
//    }
//
//    required init?(coder: NSCoder) {
//        super.init(coder: coder)
//        _init()
//    }

}

extension ComposeStatusContentTableViewCell {

//    private func _init() {
//        selectionStyle = .none
//        layer.zPosition = 999
//        backgroundColor = .clear
//        preservesSuperviewLayoutMargins = true
//
//        let containerStackView = UIStackView()
//        containerStackView.axis = .vertical
//        containerStackView.translatesAutoresizingMaskIntoConstraints = false
//        contentView.addSubview(containerStackView)
//        NSLayoutConstraint.activate([
//            containerStackView.topAnchor.constraint(equalTo: contentView.topAnchor),
//            containerStackView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
//            containerStackView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
//            containerStackView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
//        ])
//        containerStackView.preservesSuperviewLayoutMargins = true
//
//        containerStackView.addArrangedSubview(statusContentWarningEditorView)
//        statusContentWarningEditorView.setContentHuggingPriority(.required - 1, for: .vertical)
//
//        let statusContainerView = UIView()
//        statusContainerView.preservesSuperviewLayoutMargins = true
//        containerStackView.addArrangedSubview(statusContainerView)
//        statusView.translatesAutoresizingMaskIntoConstraints = false
//        statusContainerView.addSubview(statusView)
//        NSLayoutConstraint.activate([
//            statusView.topAnchor.constraint(equalTo: statusContainerView.topAnchor, constant: 20),
//            statusView.leadingAnchor.constraint(equalTo: statusContainerView.leadingAnchor),
//            statusView.trailingAnchor.constraint(equalTo: statusContainerView.trailingAnchor),
//            statusView.bottomAnchor.constraint(equalTo: statusContainerView.bottomAnchor),
//        ])
//        statusView.setup(style: .composeStatusAuthor)
//
//        containerStackView.addArrangedSubview(textEditorViewContainerView)
//        metaText.textView.translatesAutoresizingMaskIntoConstraints = false
//        textEditorViewContainerView.addSubview(metaText.textView)
//        NSLayoutConstraint.activate([
//            metaText.textView.topAnchor.constraint(equalTo: textEditorViewContainerView.topAnchor),
//            metaText.textView.leadingAnchor.constraint(equalTo: textEditorViewContainerView.layoutMarginsGuide.leadingAnchor),
//            metaText.textView.trailingAnchor.constraint(equalTo: textEditorViewContainerView.layoutMarginsGuide.trailingAnchor),
//            metaText.textView.bottomAnchor.constraint(equalTo: textEditorViewContainerView.bottomAnchor),
//            metaText.textView.heightAnchor.constraint(greaterThanOrEqualToConstant: 64).priority(.defaultHigh),
//        ])
//        statusContentWarningEditorView.textView.delegate = self
//    }

}

// MARK: - UITextViewDelegate
//extension ComposeStatusContentTableViewCell: UITextViewDelegate {
//
//    func textViewShouldBeginEditing(_ textView: UITextView) -> Bool {
//        return delegate?.composeStatusContentTableViewCell(self, textViewShouldBeginEditing: textView) ?? true
//    }
//
//    func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
//        switch textView {
//        case statusContentWarningEditorView.textView:
//            // disable input line break
//            guard text != "\n" else { return false }
//            return true
//        default:
//            assertionFailure()
//            return true
//        }
//    }
//
//    func textViewDidChange(_ textView: UITextView) {
//        logger.debug("\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): text: \(textView.text ?? "<nil>")")
//        guard textView === statusContentWarningEditorView.textView else { return }
//        // replace line break with space
//        // needs check input state to prevent break the IME
//        if textView.markedTextRange == nil {
//            textView.text = textView.text.replacingOccurrences(of: "\n", with: " ")
//        }
//        contentWarningContent.send(textView.text)
//    }
//
//}