//
//  LNOrderRoomInviteSeatPanel.swift
//  Gami
//
//  Created by OneeChan on 2026/3/20.
//

import Foundation
import UIKit
import SnapKit
import MJRefresh


class LNOrderRoomInviteSeatPanel: LNPopupView {
    private let countLabel = UILabel()
    private let filterButton = UIButton()
    private let tableView = UITableView(frame: .zero, style: .plain)
    private let emptyView = LNNoMoreDataView()
    
    private weak var roomSession: LNOrderRoomViewModel?
    private var curSeat: LNRoomSeatItem?
    
    private var items: [LNRoomUserListItemVO] = []
    private var nextTag: String? = nil
    
    private var categories: [LNGameCategoryItemVO] = []
    
    private var curCategoryCode: String = ""
    private var curCategoryTitle: String = .init(key: "A00361")
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        containerHeight = .percent(0.62)
        
        setupViews()
    }
    
    func update(_ seat: LNRoomSeatItem, room: LNOrderRoomViewModel?) {
        curSeat = seat
        roomSession = room
        
        loadList()
        if seat.index == LNOrderRoomSeatNum.guest.rawValue {
            filterButton.isHidden = true
        } else {
            filterButton.isHidden = false
            loadCategory()
        }
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

extension LNOrderRoomInviteSeatPanel {
    private func loadList() {
        guard let roomSession else { return }
        roomSession.getRoomUserList(next: nextTag, playmete: curSeat?.index != LNOrderRoomSeatNum.guest.rawValue, filter: curCategoryCode)
        { [weak self] res in
            guard let self else { return }
            if let list = res?.list {
                if nextTag == nil {
                    items.removeAll()
                }
                items.append(contentsOf: list)
                nextTag = res?.next
                tableView.reloadData()
                
                if items.isEmpty {
                    emptyView.showNoData()
                } else {
                    emptyView.hide()
                }
            } else {
                if items.isEmpty {
                    emptyView.showNetworkError()
                }
            }
            
            tableView.mj_header?.endRefreshing()
            if nextTag?.isEmpty != false {
                tableView.mj_footer?.endRefreshingWithNoMoreData()
            } else {
                tableView.mj_footer?.endRefreshing()
            }
            if let total = res?.total {
                countLabel.text = .init(key: "A00334", total)
            }
        }
    }
    
    private func loadCategory() {
        roomSession?.getPlaymateCategory { [weak self] res in
            guard let self else { return }
            guard let res else { return }
            categories = res.list
        }
    }
}

extension LNOrderRoomInviteSeatPanel: UITableViewDataSource, UITableViewDelegate {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        items.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(
            withIdentifier: LNOrderRoomInviteSeatCell.className,
            for: indexPath
        ) as! LNOrderRoomInviteSeatCell
        cell.update(room: roomSession, seat: curSeat, item: items[indexPath.row], index: indexPath.row + 1)
        return cell
    }
}

private extension LNOrderRoomInviteSeatPanel {
    func setupViews() {
        container.backgroundColor = .fill_7
        
        let countView = buildHeader()
        container.addSubview(countView)
        countView.snp.makeConstraints { make in
            make.top.equalToSuperview()
            make.horizontalEdges.equalToSuperview().inset(16)
        }
        
        let header = MJRefreshNormalHeader { [weak self] in
            guard let self else { return }
            nextTag = nil
            loadList()
        }
        header.lastUpdatedTimeLabel?.isHidden = true
        header.stateLabel?.isHidden = true
        tableView.mj_header = header
        
        let footer = MJRefreshAutoNormalFooter { [weak self] in
            guard let self else { return }
            loadList()
        }
        footer.setTitle("", for: .noMoreData)
        footer.setTitle(.init(key: "A00046"), for: .idle)
        tableView.mj_footer = footer
        
        tableView.backgroundColor = .clear
        tableView.separatorStyle = .none
        tableView.showsVerticalScrollIndicator = false
        tableView.showsHorizontalScrollIndicator = false
        tableView.allowsSelection = false
        tableView.dataSource = self
        tableView.delegate = self
        tableView.register(LNOrderRoomInviteSeatCell.self, forCellReuseIdentifier: LNOrderRoomInviteSeatCell.className)
        container.addSubview(tableView)
        tableView.snp.makeConstraints { make in
            make.top.equalTo(countView.snp.bottom)
            make.horizontalEdges.equalToSuperview()
            make.bottom.equalToSuperview().offset(commonBottomInset)
        }
        
        emptyView.isHidden = true
        emptyView.tipsLabel.textColor = .text_2
        tableView.addSubview(emptyView)
        emptyView.snp.makeConstraints { make in
            make.center.equalToSuperview()
        }
        
        updateFilterView()
    }
    
    func buildHeader() -> UIView {
        let container = UIView()
        container.snp.makeConstraints { make in
            make.height.equalTo(52)
        }
        
        let stackView = UIStackView()
        stackView.axis = .horizontal
        stackView.spacing = 5
        stackView.alignment = .center
        container.addSubview(stackView)
        stackView.snp.makeConstraints { make in
            make.leading.centerY.equalToSuperview()
        }
        
        countLabel.font = .body_m
        countLabel.textColor = .text_6
        container.addSubview(countLabel)
        stackView.addArrangedSubview(countLabel)
        
        let countDescLabel = UILabel()
        countDescLabel.font = .body_m
        countDescLabel.textColor = .text_1
        countDescLabel.text = .init(key: "A00369")
        stackView.addArrangedSubview(countDescLabel)
        
        let config = UIImage.SymbolConfiguration(pointSize: 12)
        filterButton.backgroundColor = .fill.withAlphaComponent(0.15)
        filterButton.layer.cornerRadius = 15
        filterButton.clipsToBounds = true
        filterButton.titleLabel?.font = .body_s
        filterButton.setTitleColor(.text_1, for: .normal)
        filterButton.setImage(.init(systemName: "chevron.backward", withConfiguration: config), for: .normal)
        filterButton.tintColor = .text_1
        filterButton.semanticContentAttribute = .forceRightToLeft
        filterButton.imageEdgeInsets = .init(top: 0, left: 4, bottom: 0, right: -4)
        filterButton.contentEdgeInsets = .init(top: 0, left: 12, bottom: 0, right: 12)
        filterButton.addAction(UIAction(handler: { [weak self] _ in
            guard let self else { return }
            let panel = LNOrderRoomGameCategoryFilterPanel()
            let options = buildCategoryFilterOptions()
            panel.update(options: options, curSelectedCode: curCategoryCode)
            panel.handler = { [weak self] option in
                guard let self else { return }
                curCategoryCode = option.code
                curCategoryTitle = option.code.isEmpty ? .init(key: "A00361") : option.name
                updateFilterView()
                
                nextTag = nil
                tableView.mj_header?.beginRefreshing()
            }
            panel.popup(self)
        }), for: .touchUpInside)
        container.addSubview(filterButton)
        filterButton.snp.makeConstraints { make in
            make.centerY.trailing.equalToSuperview()
            make.height.equalTo(30)
        }
        
        return container
    }
    
    func buildCategoryFilterOptions() -> [LNGameCategoryItemVO] {
        var options: [LNGameCategoryItemVO] = []
        options.append(.init(code: "", name: .init(key: "A00360"), icon: "", categoryType: .normal))
        options.append(contentsOf: categories)
        return options
    }
    
    func updateFilterView() {
        filterButton.setTitle(curCategoryTitle, for: .normal)
    }
}