//
//  ChatVC.swift
//  yinmeng-ios
//
//  Created by MaiMang on 2024/2/25.
//  回话详情

import UIKit
import NIMSDK
class ChatVC: BaseViewController {

	// 键盘收起/弹出 滚动的时候收起输入栏
	private var isBecome: Bool = false
	/// 是否发送完成
	private var isSended: Bool = true
	///  输入栏默认的高度
	private let ToolBarLastH: CGFloat = 52

	public init(session: NIMSession) {
		vm = ChatViewModel(session: session)
		super.init(nibName: nil, bundle: nil)
//		vm.delegate = self
//		NIMSDK.shared().mediaManager.add(self)
	}

	required init?(coder: NSCoder) {
		fatalError("init(coder:) has not been implemented")
	}

	var vm:ChatViewModel

	override func viewDidLoad() {
		super.viewDidLoad()
		view.backgroundColor = ThemeColor(hexStr: "#F6F6F6")
		let height = ScreenHeight - (ToolBarLastH + SafeAraeBottomHeight + NavHeight)
		chatTableView.frame = CGRect(x: 0, y: 0, width: ScreenWidth, height: height)
		view.addSubview(chatTableView)
		view.addSubview(keyboardView)
	}

	///注册cell
	private func registerChatCell() {
		chatTableView.register(cellType: ChatTextCell.self)
	}

	private lazy var chatTableView: UITableView = {
		let tableView = UITableView(frame: .zero, style: .plain)
		tableView.delegate = self
		tableView.dataSource = self
		tableView.tableFooterView = UIView()
		tableView.separatorStyle = .none
		tableView.backgroundColor = .clear
		if #available(iOS 11.0, *) {
			tableView.contentInsetAdjustmentBehavior = .never
		}
		return tableView
	}()

	private lazy var keyboardView: ChatKeyboardView = {
		let toolBarY = ScreenHeight - NavHeight - ToolBarLastH - SafeAraeBottomHeight
		let view = ChatKeyboardView(frame: CGRect(x: 0, y: toolBarY, width: ScreenWidth, height: ToolBarLastH))
		view.delegate = self
		return view
	}()

}

// MARK: - ChatKeyboardViewDelegate
extension ChatVC: ChatKeyboardViewDelegate {

	func keyboard(_ keyboard: ChatKeyboardView, DidFinish content: String) {
		///发送消息
		vm.sendTextMessage(text: content) { error in

		}
	}

	func keyboard(_ keyboard: ChatKeyboardView, DidBecome isBecome: Bool) {
		self.isSended = true
		self.isBecome = isBecome
	}

	func keyboard(_ keyboard: ChatKeyboardView, DidMoreMenu type: ChatMoreMenuType) {

		//TODO: 点击更多
	}

	func keyboard(_ keyboard: ChatKeyboardView, DidObserver offsetY: CGFloat) {

	}
}

extension ChatVC: UITableViewDelegate, UITableViewDataSource, UIScrollViewDelegate {
	public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
		return vm.messageObjects.count
	}

	public func tableView(_ tableView: UITableView,
						  cellForRowAt indexPath: IndexPath) -> UITableViewCell {
		let model = vm.messageObjects[safe: indexPath.row]
		if model?.type == .text {
			let cell = tableView.dequeueReusableCell(for: indexPath, cellType: ChatTextCell.self)
			cell.model = model
		}
		return UITableViewCell()
	}

	public func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
		tableView.deselectRow(at: indexPath, animated: true)
	}

	public func tableView(_ tableView: UITableView,
						  heightForRowAt indexPath: IndexPath) -> CGFloat {
		let m = vm.messageObjects[safe:indexPath.row]
		return CGFloat(m?.height ?? 0)
	}

	func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
		if isSended {
			isSended = false
		}
	}

	func scrollViewDidScroll(_ scrollView: UIScrollView) {
		if isSended {
			return
		}

		if chatTableView.y <= 0 && isBecome {
			DispatchQueue.main.async {
				NotificationCenter.default.post(name: .kChatTextKeyboardNeedHide, object: nil)
			}
		}
	}
}