//
//  GroupMemberListVC.swift
//  QuickLocation
//
//  Created by 八条 on 2026/6/29.
//

import UIKit
import RxSwift
import RxCocoa
import RxDataSources
import ObjectMapper

class GroupMemberListVC: BaseViewController {

    fileprivate var rootView: GroupMemberListView!

    override func loadView() {
        rootView = GroupMemberListView(frame: UIScreen.main.bounds)
        view = rootView
    }

    private var viewModel: GroupMemberListVM

    override func viewDidLoad() {
        super.viewDidLoad()

        bindViewModel()
        reactiveAction()

        requestGroupInfo()
    }

    private func reactiveAction() {

    }

    private var selectedRow = 0

    private func bindViewModel() {
        viewModel.output.sectionedItems
            .bind(to: rootView.collectionView.rx.items(dataSource: memberDataSource))
            .disposed(by: disposeBag)

        viewModel.output.drivingSectionedItems
            .bind(to: rootView.drivingEventCV.rx.items(dataSource: drivingDataSource))
            .disposed(by: disposeBag)

        // 成员点击
        rootView.collectionView.rx.modelSelected(GroupMemberModel.self)
            .subscribe(onNext: { [weak self] model in
                guard let self = self, let row = self.viewModel.rowOf(userId: model.user_id) else { return }
                self.selectedRow = row
                self.rootView.selectedMemberIsSelf = self.viewModel.isCurrentUser(id: model.user_id)
                self.rootView.collectionView.reloadData()
            }).disposed(by: disposeBag)
    }

    // MARK: - dataSource

    private lazy var memberDataSource: RxCollectionViewSectionedReloadDataSource<GroupMemberListSectionModel> = {
        RxCollectionViewSectionedReloadDataSource<GroupMemberListSectionModel> { [weak self] datasource, collectionView, indexPath, model in
            let cell: GroupMemberListCell = collectionView.dequeueReusableCell(for: indexPath)
            cell.configure(model: model,
                           isCurrentUser: self?.viewModel.isCurrentUser(id: model.user_id) ?? false,
                           isSelected: indexPath.row == (self?.selectedRow ?? 0))
            return cell
        }
    }()

    private lazy var drivingDataSource: RxCollectionViewSectionedReloadDataSource<DrivingEventSection> = {
        RxCollectionViewSectionedReloadDataSource<DrivingEventSection> { _, collectionView, indexPath, item in
            let cell: DrivingEventCell = collectionView.dequeueReusableCell(for: indexPath)
            cell.configure(item)
            return cell
        }
    }()

    // MARK: - API
    private func requestGroupInfo() {
        DLToast.showLoading()
        GroupService.groupInfoByKey(viewModel.groupKey).subscribe { response in
            DLToast.dismiss()
            guard let model = response.model else { return }
            self.viewModel.groupModel = model
            self.viewModel.loadData(response.list)
            // 默认选中第一个成员，更新日期可点范围
            if let first = self.viewModel.firstMemberId {
                self.rootView.selectedMemberIsSelf = self.viewModel.isCurrentUser(id: first)
            }
        }.disposed(by: disposeBag)
    }

    // MARK: - Init
    init(groupKey: String) {
        viewModel = GroupMemberListVM(groupKey: groupKey)
        super.init(nibName: nil, bundle: nil)
    }

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