//
//  ShareViewController.swift
//  MastodonShareAction
//
//  Created by MainasuK Cirno on 2021-7-16.
//

import os.log
import UIKit
import Combine
import MastodonUI

class ShareViewController: UIViewController {

    let logger = Logger(subsystem: "ShareViewController", category: "UI")

    var disposeBag = Set<AnyCancellable>()
    let viewModel = ShareViewModel()

    let publishButton: UIButton = {
        let button = RoundedEdgesButton(type: .custom)
        button.setTitle(L10n.Scene.Compose.composeAction, for: .normal)
        button.titleLabel?.font = .systemFont(ofSize: 14, weight: .bold)
        button.setBackgroundImage(.placeholder(color: Asset.Colors.brandBlue.color), for: .normal)
        button.setBackgroundImage(.placeholder(color: Asset.Colors.brandBlue.color.withAlphaComponent(0.5)), for: .highlighted)
        button.setBackgroundImage(.placeholder(color: Asset.Colors.Button.disabled.color), for: .disabled)
        button.setTitleColor(.white, for: .normal)
        button.contentEdgeInsets = UIEdgeInsets(top: 6, left: 16, bottom: 5, right: 16)     // set 28pt height
        button.adjustsImageWhenHighlighted = false
        return button
    }()

    private(set) lazy var cancelBarButtonItem = UIBarButtonItem(title: L10n.Common.Controls.Actions.cancel, style: .plain, target: self, action: #selector(ShareViewController.cancelBarButtonItemPressed(_:)))
    private(set) lazy var publishBarButtonItem: UIBarButtonItem = {
        let barButtonItem = UIBarButtonItem(customView: publishButton)
        barButtonItem.target = self
        barButtonItem.action = #selector(ShareViewController.publishBarButtonItemPressed(_:))
        return barButtonItem
    }()

    let activityIndicatorBarButtonItem: UIBarButtonItem = {
        let indicatorView = UIActivityIndicatorView(style: .medium)
        let barButtonItem = UIBarButtonItem(customView: indicatorView)
        indicatorView.startAnimating()
        return barButtonItem
    }()

//    let tableView: ComposeTableView = {
//        let tableView = ComposeTableView()
//        tableView.register(ComposeStatusContentTableViewCell.self, forCellReuseIdentifier: String(describing: ComposeStatusContentTableViewCell.self))
//        tableView.register(ComposeStatusAttachmentTableViewCell.self, forCellReuseIdentifier: String(describing: ComposeStatusAttachmentTableViewCell.self))
//        tableView.alwaysBounceVertical = true
//        tableView.separatorStyle = .none
//        tableView.tableFooterView = UIView()
//        return tableView
//    }()

}


extension ShareViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        view.backgroundColor = Asset.Colors.Background.systemBackground.color

        navigationItem.leftBarButtonItem = cancelBarButtonItem
        viewModel.isBusy
            .receive(on: DispatchQueue.main)
            .sink { [weak self] isBusy in
                guard let self = self else { return }
                self.navigationItem.rightBarButtonItem = isBusy ? self.activityIndicatorBarButtonItem : self.publishBarButtonItem
            }
            .store(in: &disposeBag)

//        viewModel.authentication
//            .receive(on: DispatchQueue.main)
//            .sink { [weak self] result in
//                guard let self = self else { return }
//            }
    }

    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)

        viewModel.viewDidAppear.value = true
//        extensionContext
    }

}

extension ShareViewController {
    @objc private func cancelBarButtonItemPressed(_ sender: UIBarButtonItem) {
        logger.debug("\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public)")
        extensionContext?.cancelRequest(withError: ShareViewModel.ShareError.userCancelShare)
    }

    @objc private func publishBarButtonItemPressed(_ sender: UIBarButtonItem) {
        logger.debug("\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public)")
    }
}