//
//  LNIMChatBaseMessageCell.swift
//  Lanu
//
//  Created by OneeChan on 2025/12/5.
//

import Foundation
import UIKit
import SnapKit


class LNIMChatBaseMessageCell: UITableViewCell {
    let container = UIView()
    
    private let bubbleView = UIView()
    private let peerArrow = UIImageView()
    private let myArrow = UIImageView()
    private let holder = UIView()
    
    private let stackView = UIStackView()
    private let timeLabel = UILabel()
    private let readStateIc = UIImageView()
    
    private let sendStateIc = UIImageView()
    
    private var curItem: LNIMMessageData?
    private weak var viewModel: LNIMChatViewModel?
    
    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        
        setupViews()
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func update(_ data: LNIMMessageData, viewModel: LNIMChatViewModel) {
        if data.isSelf == true {
            bubbleView.snp.remakeConstraints { make in
                make.trailing.equalToSuperview()
                make.top.bottom.equalToSuperview()
            }
            
            peerArrow.isHidden = true
            myArrow.isHidden = false
            
            holder.layer.maskedCorners = [.layerMinXMinYCorner, .layerMinXMaxYCorner, .layerMaxXMaxYCorner]
            holder.backgroundColor = .init(hex: "#E6FFFA")
            
            stackView.addArrangedSubview(readStateIc)
            readStateIc.image = data.readReceipt?.isPeerRead == true ? .icImChatRead : .icImChatUnread
        } else {
            bubbleView.snp.remakeConstraints { make in
                make.leading.equalToSuperview()
                make.top.bottom.equalToSuperview()
            }
            
            peerArrow.isHidden = false
            myArrow.isHidden = true
            
            holder.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMinXMaxYCorner, .layerMaxXMaxYCorner]
            holder.backgroundColor = .fill
            
            stackView.removeArrangedSubview(readStateIc)
            readStateIc.removeFromSuperview()
        }
        sendStateIc.isHidden = data.imMessage.isSelf != true || data.imMessage.status != .MSG_STATUS_SEND_FAIL
        
        if let time = data.imMessage.timestamp {
            timeLabel.text = time.tencentIMTimeDesc
        }
        curItem = data
        self.viewModel = viewModel
    }
    
    func setupViews() {
        backgroundColor = .clear
        
        contentView.addSubview(bubbleView)
        bubbleView.snp.makeConstraints { make in
            make.trailing.equalToSuperview()
            make.top.bottom.equalToSuperview()
        }
        
        peerArrow.image = .icImChatBubblePeer
        bubbleView.addSubview(peerArrow)
        peerArrow.snp.makeConstraints { make in
            make.top.equalToSuperview()
            make.leading.equalToSuperview().offset(16)
        }
        
        let holder = buildHolder()
        bubbleView.addSubview(holder)
        holder.snp.makeConstraints { make in
            make.top.equalToSuperview()
            make.bottom.equalToSuperview().offset(-8)
            make.leading.equalTo(peerArrow.snp.trailing)
            make.width.lessThanOrEqualTo(282)
        }
        
        myArrow.image = .icImChatBubbleMe
        bubbleView.addSubview(myArrow)
        myArrow.snp.makeConstraints { make in
            make.leading.equalTo(holder.snp.trailing)
            make.top.equalToSuperview()
            make.trailing.equalToSuperview().offset(-16)
        }
        
        sendStateIc.image = .icImChatSendFailed
        bubbleView.addSubview(sendStateIc)
        sendStateIc.snp.makeConstraints { make in
            make.centerY.equalToSuperview()
            make.trailing.equalTo(holder.snp.leading).offset(-8)
        }
        sendStateIc.onTap { [weak self] in
            guard let self else { return }
            guard let curItem else { return }
            viewModel?.resendMessage(message: curItem)
        }
    }
}

extension LNIMChatBaseMessageCell {
    private func buildHolder() -> UIView {
        stackView.axis = .horizontal
        stackView.spacing = 4
        holder.addSubview(stackView)
        stackView.snp.makeConstraints { make in
            make.trailing.bottom.equalToSuperview().offset(-8)
            make.leading.greaterThanOrEqualToSuperview().offset(8)
        }
        
        timeLabel.font = .body_xs
        timeLabel.textColor = .text_3
        stackView.addArrangedSubview(timeLabel)
        
        readStateIc.image = .icImChatUnread
        stackView.addArrangedSubview(readStateIc)
        
        holder.layer.cornerRadius = 12
        holder.addSubview(container)
        container.snp.makeConstraints { make in
            make.horizontalEdges.equalToSuperview().inset(8)
            make.top.equalToSuperview().offset(8)
            make.bottom.equalTo(stackView.snp.top).offset(-4)
        }
        
        return holder
    }
}