//
//  BRHomeViewController.swift
//  BeeReel
//
//  Created by 湖南秦九 on 2025/6/25.
//

import UIKit

class BRHomeViewController: BRViewController {
    
    
    private lazy var viewModel = BRHomeViewModel()
    
    
    private lazy var spotlightVC: BRSpotlightViewViewController = {
        let vc = BRSpotlightViewViewController()
        vc.viewModel = self.viewModel
        return vc
    }()
    
    private lazy var vcArr: [BRViewController] = {
        return [
            spotlightVC,
            BRHomeTop10ViewController(),
            BRPopularPicksViewController(),
            BRNewReleasesViewController(),
            BRHomeCategoriesViewController()
        ]
    }()
    
    private lazy var requestGroup = DispatchGroup()
    
    private lazy var pageParam: WMZPageParam = {
        let param = WMZPageParam()
        param.wTitleArr = [
            "Spotlight".localized,
            "Top 10".localized,
            "Popular Picks".localized,
            "New Releases".localized,
            "Categories".localized
        ]
        param.wViewController = { [weak self] index in
            return self?.vcArr[index]
        }
        param.wMenuHeadView = { [weak self] in
            if let bannerArr = self?.viewModel.bannerArr, bannerArr.count > 0 {
                return self?.headerView
            } else {
                return nil
            }
        }
        //顶部可下拉
        param.wBounces = true
        param.wMenuTitleColor = .colorFFFFFF()
        param.wMenuTitleSelectColor = .colorFFFFFF()
        param.wMenuTitleUIFont = .fontMedium(ofSize: 12)
        param.wMenuTitleSelectUIFont = .fontMedium(ofSize: 12)
        param.wMenuTitleRadios = 17
        param.wMenuHeight = 34
        param.wMenuTitleOffset = 10
        param.wMenuInsets = UIEdgeInsets(top: 40, left: 59, bottom: 0, right: 15)
        param.wMenuBgColor = .clear
        param.wBgColor = .clear
        
        
        param.wTopSuspension = true
        param.wCustomDataViewTopOffset = UIScreen.statusBarHeight
        
        param.wCustomMenuTitle = { [weak self] buttons in
            buttons?.forEach({ button in
                self?.setMenuTitle(button: button)
            })
        }
        
        param.wCustomNaviBarY = { _ in
            return 0
        }
        param.wCustomTabbarY = { _ in
            return 0
        }
        
        
        param.wEventChildVCDidSroll = { [weak self] (pageVC, oldPoint, newPonit, currentScrollView) in
            guard let self = self else { return }
            
            let top = max(0, newPonit.y)
            self.bgImageView.snp.updateConstraints { make in
                make.top.equalToSuperview().offset(-top)
            }
            self.updateStatusBarStyle()
        }
        
        return param
    }()
    
    private lazy var pageView: WMZPageView = {
        let view = WMZPageView(frame: self.view.bounds, autoFix: true, param: pageParam, parentReponder: self)
        view.backgroundColor = .clear
        view.downSc?.backgroundColor = .clear
        view.downSc?.br_addRefreshHeader { [weak self] in
            self?.handleHeaderRefresh(nil)
        }
        return view
    }()
    
    private lazy var bgImageView: UIImageView = {
        let imageView = UIImageView(image: UIImage(named: "home_header_bg_image"))
        imageView.isHidden = true
        return imageView
    }()
    
    private lazy var titleLabel: UILabel = {
        let label = UILabel()
        label.font = .fontMedium(ofSize: 17)
        label.textColor = .color1C1C1C()
        label.text = "Browse Genres".localized
        return label
    }()
    
    private lazy var headerView: BRHomeHeaderView = {
        let view = BRHomeHeaderView()
        view.frame = .init(x: 0, y: 0, width: UIScreen.width, height: view.contentHeight)
        return view
    }()
    
    private lazy var menuLeftView: UIView = {
        let view = UIView()
        view.backgroundColor = self.view.backgroundColor
        return view
    }()
    
    private lazy var searchButton: UIButton = {
        let button = UIButton(type: .custom)
        button.setImage(UIImage(named: "search_button_01"), for: .normal)
        return button
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.edgesForExtendedLayout = [.top, .bottom]
        self.statusBarStyle = .lightContent
        self.navigationController?.isNavigationBarHidden = true
        
        br_setupUI()
        
        requestHomeData()
        
        setupPageView()
        
        updateStatusBarStyle()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.navigationController?.setNavigationBarHidden(true, animated: true)
    }
    
    
    private func updateStatusBarStyle() {
        let point = self.pageView.downSc?.contentOffset ?? .zero
        
        if point.y < 300, let bannerArr = self.viewModel.bannerArr, bannerArr.count > 0 {
            self.statusBarStyle = .lightContent
        } else {
            self.statusBarStyle = .darkContent
        }
    }
    
    override func handleHeaderRefresh(_ completer: (() -> Void)?) {
        
        self.requestGroup.enter()
        requestHomeData { [weak self] in
            self?.requestGroup.leave()
        }
        
        if let vc = self.pageView.upSc.currentVC as? BRViewController {
            self.requestGroup.enter()
            vc.handleHeaderRefresh { [weak self] in
                self?.requestGroup.leave()
            }
        }
        
        self.requestGroup.notify(queue: .main) { [weak self] in
            self?.pageView.downSc?.br_endHeaderRefreshing()
        }
        
    }

}

extension BRHomeViewController {
    
    private func br_setupUI() {
        view.addSubview(bgImageView)
        view.addSubview(pageView)
        menuLeftView.addSubview(searchButton)
        
        bgImageView.snp.makeConstraints { make in
            make.top.equalToSuperview().offset(0)
            make.left.right.equalToSuperview()
            make.height.equalTo(UIScreen.statusBarHeight + 300)
        }
        
        searchButton.snp.makeConstraints { make in
            make.left.equalToSuperview().offset(15)
            make.centerY.equalToSuperview()
        }
    }
    
    ///自定义菜单样式
    private func setMenuTitle(button: UIButton) {
        button.setBackgroundImage(UIImage(named: "menu_bg_image_01"), for: .selected)
        button.setBackgroundImage(UIImage(color: .colorD3D3D3()), for: .normal)
        button.layer.masksToBounds = true
    }
    
    private func setupPageView() {
        
        self.pageView.upSc.addSubview(titleLabel)
        self.pageView.upSc.addSubview(menuLeftView)
        
//        self.pageView.upSc.sendSubviewToBack(menuBgView)
        
        titleLabel.snp.makeConstraints { make in
            make.left.equalToSuperview().offset(15)
            make.top.equalToSuperview().offset(10)
        }
        
        menuLeftView.snp.makeConstraints { make in
            make.left.equalToSuperview()
            make.top.equalToSuperview().offset(pageParam.wMenuInsets.top)
            make.height.equalTo(34)
            make.width.equalTo(59)
        }
    }
    
}

extension BRHomeViewController {
    
    private func requestHomeData(completer: (() -> Void)? = nil) {
        
        BRHomeAPI.requestHomeData { [weak self] list in
            guard let self = self else { return }
            if let list = list {
                self.viewModel.homeOldDataArr = list
                
                self.headerView.bannerArr = self.viewModel.bannerArr
                if let bannerArr = self.viewModel.bannerArr, bannerArr.count > 0 {
                    self.bgImageView.isHidden = false
                    self.pageView.updateHeadView()
                } else {
                    self.bgImageView.isHidden = true
                }
                self.spotlightVC.reloadData()
            }
            self.updateStatusBarStyle()
            completer?()
        }
        
    }
    
}