MiMO_iOS/MiMoLive/Classes/Live/View/LiveingView/GiftListView/MOGiftListViewModel.swift

//
//  MOGiftListViewModel.swift
//  MiMoLive
//
//  Created by OneeChan on 2025/9/18.
//

import Foundation

@objc
protocol MOGiftListViewModelDelegate {
    @objc optional func onGiftListChanged(category: Int, list: [MOGiftlist])
    @objc optional func onUserBalanceChangedBySendGift(current: Int)
    @objc optional func onUserLevelChangedBySendGift(level: Int, curExp: Int, nextExp: Int)
    @objc optional func onSendGiftSuccess(category: Int, num: Int, gift: MOGiftlist, info: MOGiftInfo)
    
    @objc optional func onSendBagSuccess(category: Int, num: Int, gift: MOGiftlist, info: MOGiftInfo, newItem: MOGiftlist?)
}

@objcMembers
class MOGiftListViewModel: NSObject {
    private static let kPageSize = 60
    
    private let observers: NSHashTable<MOGiftListViewModelDelegate> = NSHashTable.weakObjects()
    
    @objc
    enum GiftCategory: Int {
        case hot = 1
        case lucky = 2
        case fans = 3
        case vip = 4
        case lv = 5
        case funny = 6
        case luxury = 7
        case sl = 8
    }
    private var categories: [MOGiftCategoryList] = [
        MOGiftCategoryList.initWith("Hot", code: Double(GiftCategory.hot.rawValue)),
        MOGiftCategoryList.initWith("SL", code: Double(GiftCategory.sl.rawValue)),
        MOGiftCategoryList.initWith("Lucky", code: Double(GiftCategory.lucky.rawValue)),
        MOGiftCategoryList.initWith("Fans", code: Double(GiftCategory.fans.rawValue)),
        MOGiftCategoryList.initWith("Vip", code: Double(GiftCategory.vip.rawValue)),
        MOGiftCategoryList.initWith("Lv", code: Double(GiftCategory.lv.rawValue)),
        MOGiftCategoryList.initWith("Funny", code: Double(GiftCategory.funny.rawValue)),
        MOGiftCategoryList.initWith("Luxury", code: Double(GiftCategory.luxury.rawValue))
    ]
    
    private var curRoom: MOLiveDetail? = nil
    var curRoomId: String? {
        curRoom?.currentRoom.id
    }
    
    private var giftCache: [Int: [MOGiftlist]] = [:]
    private var giftNextTags: [Int: String] = [:]
    
    override init() {
        super.init()
        
        MOEventDeliver.addObserver(self)
    }
}

// MARK: Category 类别
extension MOGiftListViewModel {
    var categoryTitles: [String] {
        categories.map { $0.name }
    }
    
    func category(at: Int) -> MOGiftCategoryList? {
        guard at < categories.count else { return nil }
        return categories[at]
    }
    
    func checkGiftCategory() {
        let category = MOSvgaSourceManage.shareManager().giftCategoryArr
        
        if category.count == 0 {
            MOSvgaSourceManage.shareManager().toGetGiftCategoryListDataAndNeedShowError(true)
        } else {
            categories = category.compactMap({ item in
                guard let item = item as? MOGiftCategoryList else { return nil }
                return item
            })
        }
        preloadGiftList()
    }
}

// MARK: Bag 包裹
extension MOGiftListViewModel {
    func sendBag(toUid: String, category: Int, gift: MOGiftlist, num: Int, completion: ((Bool) -> Void)? = nil) {
        guard !toUid.isEmpty else {
            MBProgressHUD.showTipMessage(inWindow: NSLocalizedString("mimo_2_live_gift_send_0_tip", comment: ""))
            completion?(false)
            return
        }
        guard let roomId = curRoomId,
              !roomId.isEmpty,
              let giftInfo = gift.giftInfo,
              let giftId = giftInfo.id,
              !giftId.isEmpty,
              let notifyGift = gift.copy() as? MOGiftlist
        else {
            completion?(false)
            return
        }
        let skinCode: Double = if let skin = gift.giftInfo.selectSkin {
            skin.code
        } else {
            0
        }
        let skin = gift.giftInfo.selectSkin?.copy() as? MOEffect
        
        //没有礼物类别的情况 - 比如心愿单送礼
        let dict: [String : Any] = ["roomId": roomId,
                                    "userId": toUid,
                                    "giftId": giftId,
                                    "skinCode": skinCode,
                                    "count": num]
        
        MOHttpManager.shared().toGivingPackGift(withParams: dict) { [weak self] data, error in
            guard let self, self.curRoomId == roomId else { return }
            guard let data = data as? [AnyHashable: Any] else {
                completion?(false)
                return
            }
            if !data.isCodeSuccess {
                if data.code != 20007 {
                    data.showNetError()
                }
                completion?(false)
                return
            }
            guard let resData = data.data else {
                completion?(false)
                return
            }
            
            var newItem: MOGiftlist? = nil
            if let bagData = resData["packGiftInfo"] as? [AnyHashable: Any],
               let bag = MOGiftlist.modelObject(with: bagData),
               !bag.giftInfo.id.isEmpty {
                bag.isBag = gift.isBag
                newItem = bag
            }
            
            notifyUserLevelChanged(resData["userLevel"])
            
            notifyGift.isBag = true
            let rebateDiamond = Double(resData.intValue(for: "rebateDiamond"))
            notifyGift.giftInfo.rebateMultiple = Double(resData.intValue(for: "rebateMultiple"))
            notifyGift.giftInfo.rebateDiamond = rebateDiamond
            notifyGift.endGiftNum = num
            notifyGift.giftInfo.selectSkin = skin
            notifyGift.giftInfo.antiDrillCritGift = giftInfo.antiDrillCritGift
            if giftInfo.antiDrillCritGift {
                notifyGift.giftInfo.hitDiamond = Int(rebateDiamond)
            }
            notifySendBagSuccess(category, num, notifyGift, giftInfo, newItem)
            completion?(true)
        }
    }
    
    func sendBag(toUids: [String], category: Int, gift: MOGiftlist, num: Int, completion: ((Bool) -> Void)? = nil) {
        guard !toUids.isEmpty else {
            MBProgressHUD.showTipMessage(inWindow: NSLocalizedString("mimo_2_live_gift_send_0_tip", comment: ""))
            completion?(false)
            return
        }
        guard let roomId = curRoomId,
              !roomId.isEmpty,
              let giftInfo = gift.giftInfo,
              let giftId = giftInfo.id,
              !giftId.isEmpty,
              let notifyGift = gift.copy() as? MOGiftlist
        else {
            completion?(false)
            return
        }
        let skinCode: Double = if let skin = gift.giftInfo.selectSkin {
            skin.code
        } else {
            0
        }
        let skin = gift.giftInfo.selectSkin?.copy() as? MOEffect
        
        //没有礼物类别的情况 - 比如心愿单送礼
        let dict: [String : Any] = ["roomId": roomId,
                                    "userIds": toUids,
                                    "giftId": giftId,
                                    "skinCode": skinCode,
                                    "count": num]
        
        MOHttpManager.shared().toSendMoreOneGiftAboutPack(withParams: dict) { [weak self] data, error in
            guard let self, self.curRoomId == roomId else { return }
            guard let data = data as? [AnyHashable: Any] else {
                completion?(false)
                return
            }
            if !data.isCodeSuccess {
                if data.code != 20007 {
                    data.showNetError()
                }
                completion?(false)
                return
            }
            guard let resData = data.data,
                  let resultData = MOGiftResultData.modelObject(with: resData)
            else {
                completion?(false)
                return
            }
            
            var newItem: MOGiftlist? = nil
            if let bagData = resData["packGiftInfo"] as? [AnyHashable: Any],
               let bag = MOGiftlist.modelObject(with: bagData),
               !bag.giftInfo.id.isEmpty {
                bag.isBag = gift.isBag
                newItem = bag
            }
            
            notifyUserLevelChanged(resData["userLevel"])
            
            var rebateDiamond: Double = 0
            var rebateMultiple: Double = 0
            for item in resultData.giftRebates {
                if let rebate = item as? MOGiftRebates {
                    rebateMultiple += rebate.multiple
                    rebateDiamond += rebate.diamond
                }
            }
            
            notifyGift.giftInfo.rebateMultiple = rebateMultiple
            notifyGift.giftInfo.rebateDiamond = rebateDiamond
            notifyGift.giftInfo.num = Double(num)
            notifyGift.endGiftNum = num
            notifyGift.giftInfo.multipleUserList = toUids
            notifyGift.giftInfo.selectSkin = skin
            notifyGift.giftInfo.antiDrillCritGift = giftInfo.antiDrillCritGift
            if giftInfo.antiDrillCritGift {
                notifyGift.giftInfo.hitDiamond = Int(rebateDiamond)
            }
            notifySendBagSuccess(category, num * toUids.count, notifyGift, giftInfo, newItem)
            completion?(true)
        }
    }
}

// MARK: Gift 礼物
extension MOGiftListViewModel {
    func sendGift(toUid: String, category: Int, gift: MOGiftlist, num: Int, completion: ((Bool) -> Void)? = nil) {
        guard !toUid.isEmpty else {
            MBProgressHUD.showTipMessage(inWindow: NSLocalizedString("mimo_2_live_gift_send_0_tip", comment: ""))
            completion?(false)
            return
        }
        guard let roomId = curRoomId,
              !roomId.isEmpty,
              let giftInfo = gift.giftInfo,
              let giftId = giftInfo.id,
              !giftId.isEmpty,
              let notifyGift = gift.copy() as? MOGiftlist
        else {
            completion?(false)
            return
        }
        let skinCode: Double = if let skin = gift.giftInfo.selectSkin {
            skin.code
        } else {
            0
        }
        let skin = gift.giftInfo.selectSkin?.copy() as? MOEffect
        
        //没有礼物类别的情况 - 比如心愿单送礼
        let dict: [String : Any] = ["roomId": roomId,
                                    "userId": toUid,
                                    "giftId": giftId,
                                    "skinCode": skinCode,
                                    "count": num]
        
        MOHttpManager.shared().toGivingGiftAboutLive(withParams: dict) { [weak self] data, error in
            guard let self, self.curRoomId == roomId else { return }
            guard let data = data as? [AnyHashable: Any] else {
                completion?(false)
                return
            }
            if !data.isCodeSuccess {
                if data.code != 20007 {
                    data.showNetError()
                }
                completion?(false)
                return
            }
            guard let resData = data.data else {
                completion?(false)
                return
            }
            
//                MOLogV(@"givingGift: %@",[[NSString alloc] initWithData:[NSJSONSerialization dataWithJSONObject:data options:0 error:nil] encoding:NSUTF8StringEncoding]);
            
            let currentDiamond = resData.intValue(for: "currentDiamond")
            notifyUserBalanceChanged(currentDiamond)
            notifyUserLevelChanged(resData["userLevel"])
            
            let rebateDiamond = Double(resData.intValue(for: "rebateDiamond"))
            notifyGift.giftInfo.rebateMultiple = Double(resData.intValue(for: "rebateMultiple"))
            notifyGift.giftInfo.rebateDiamond = rebateDiamond
            notifyGift.giftInfo.num = Double(num)
            notifyGift.endGiftNum = num
            notifyGift.giftInfo.selectSkin = skin
            
            if let blindboxLotteryDict = resData["blindboxLotterys"] {
                notifyGift.giftInfo.blindboxLottery = MOBlindboxLottery.model(withJSON: blindboxLotteryDict)
            } else {
                notifyGift.giftInfo.blindboxLottery = nil
            }
            notifyGift.giftInfo.antiDrillCritGift = giftInfo.antiDrillCritGift
            if giftInfo.antiDrillCritGift {
                notifyGift.giftInfo.hitDiamond = Int(rebateDiamond)
            }
            notifySendGiftSuccess(category, num, notifyGift, giftInfo)
            completion?(true)
        }
    }
    
    func sendGift(toUids: [String], category: Int, gift: MOGiftlist, num: Int, completion: ((Bool) -> Void)? = nil) {
        guard !toUids.isEmpty else {
            MBProgressHUD.showTipMessage(inWindow: NSLocalizedString("mimo_2_live_gift_send_0_tip", comment: ""))
            completion?(false)
            return
        }
        guard let roomId = curRoomId,
              !roomId.isEmpty,
              let giftInfo = gift.giftInfo,
              let giftId = giftInfo.id,
              !giftId.isEmpty,
              let notifyGift = gift.copy() as? MOGiftlist
        else {
            completion?(false)
            return
        }
        let skinCode: Double = if let skin = gift.giftInfo.selectSkin {
            skin.code
        } else {
            0
        }
        let skin = gift.giftInfo.selectSkin?.copy() as? MOEffect
        
        //没有礼物类别的情况 - 比如心愿单送礼
        let dict: [String : Any] = ["roomId": roomId,
                                    "userIds": toUids,
                                    "giftId": giftId,
                                    "skinCode": skinCode,
                                    "count": num]
        
        MOHttpManager.shared().toSendMoreOneGift(withParams: dict) { [weak self] data, error in
            guard let self, self.curRoomId == roomId else { return }
            guard let data = data as? [AnyHashable: Any] else {
                completion?(false)
                return
            }
            if !data.isCodeSuccess {
                if data.code != 20007 {
                    data.showNetError()
                }
                completion?(false)
                return
            }
            guard let resData = data.data,
                  let resultData = MOGiftResultData.modelObject(with: resData)
            else {
                completion?(false)
                return
            }
            
            notifyUserBalanceChanged(Int(resultData.currentDiamond))
            notifyUserLevelChanged(resData["userLevel"])
            
            var rebateDiamond: Double = 0
            var rebateMultiple: Double = 0
            for item in resultData.giftRebates {
                if let rebate = item as? MOGiftRebates {
                    rebateMultiple += rebate.multiple
                    rebateDiamond += rebate.diamond
                }
            }
            
            notifyGift.giftInfo.rebateMultiple = rebateMultiple
            notifyGift.giftInfo.rebateDiamond = rebateDiamond
            notifyGift.giftInfo.num = Double(num)
            notifyGift.endGiftNum = num
            notifyGift.giftInfo.multipleUserList = toUids
            notifyGift.giftInfo.selectSkin = skin
            
            if let blindboxLotteryDict = data["blindboxLotterys"] {
                notifyGift.giftInfo.blindboxLottery = MOBlindboxLottery.model(withJSON: blindboxLotteryDict)
            } else {
                notifyGift.giftInfo.blindboxLottery = nil
            }
            notifyGift.giftInfo.antiDrillCritGift = giftInfo.antiDrillCritGift
            if giftInfo.antiDrillCritGift {
                notifyGift.giftInfo.hitDiamond = Int(rebateDiamond)
            }
            notifySendGiftSuccess(category, num, notifyGift, giftInfo)
            completion?(true)
        }
    }
    
    func preloadGiftList() {
        categories.forEach { item in
            loadGiftList(category: Int(item.code), reload: true, completion: nil)
        }
    }
    
    func isGiftListHasNext(_ category: Int) -> Bool {
        guard let tag = giftNextTags[category] else { return true }
        return tag.count > 0
    }
    
    func giftListFor(_ category: Int) -> [MOGiftlist] {
        giftCache[category] ?? []
    }
    
    func loadGiftList(category: Int, reload: Bool = false, completion:((Bool) -> Void)?) {
        guard let roomId = curRoomId else { return }
        let next = reload ? "" : giftNextTags[category] ?? ""
        
        let page: [String : Any] = ["size": Self.kPageSize, "next": next]
        let dic: [String: Any] = ["category": category, "roomId": roomId, "page": page]
        
        MOHttpManager.shared().toGetLiveGiftList(withParams: dic) { [weak self] data, error in
            guard let self, self.curRoomId == roomId else { return }
            guard let data = data as? [AnyHashable: Any] else {
                completion?(false)
                return
            }
            if !data.isCodeSuccess {
                data.showNetError()
                completion?(false)
                return
            }
            guard let resData = data.data else {
                completion?(false)
                return
            }
            guard let baseData = MOGiftListBaseData.modelObject(with: resData),
                  let list = baseData.giftlist as? [MOGiftlist] else {
                completion?(false)
                return
            }
            
            var cache = giftCache[category] ?? []
            var isChanged = false
            if reload {
                // 刷新的时候，判断列表是否变化，减少列表没必要的刷新
                isChanged = cache != list
                if isChanged {
                    cache.removeAll()
                    cache.append(contentsOf: list)
                }
            } else {
                isChanged = true
                cache.append(contentsOf: list)
            }
            if isChanged {
                giftCache[category] = cache
            }
            
            giftNextTags[category] = list.count < Self.kPageSize ? "" : baseData.next
            completion?(true)
            
            if isChanged {
                notifyGiftListChanged(category)
            }
        }
    }
}

// MARK: Observers 监听
extension MOGiftListViewModel {
    func addObserver(_ observer: MOGiftListViewModelDelegate) {
        guard !observers.contains(observer) else { return }
        
        observers.add(observer)
    }
    
    private func notifyGiftListChanged(_ category: Int) {
        let list = giftCache[category] ?? []
        observers.allObjects.forEach { $0.onGiftListChanged?(category: category, list: list) }
    }
    
    private func notifyUserBalanceChanged(_ cur: Int) {
        guard cur != -1 else { return }
        // 更新用户余额
        let userInfo = MODataCache.sharedYYCache().object(forKey: kMineUserInfo) as? MOMeDataInfo
        userInfo?.userWallet.diamond = Double(cur)
        MODataCache.sharedYYCache().setObject(userInfo, forKey: kMineUserInfo)
        
        observers.allObjects.forEach { $0.onUserBalanceChangedBySendGift?(current: cur) }
    }
    
    private func notifyUserLevelChanged(_ data: Any?) {
        guard let levelDic = data as? [AnyHashable: Any] else { return }
        //等级 - 经验
        let level = levelDic.intValue(for: "leel")
        let curExp = levelDic.intValue(for: "currExp")
        let nextExp = levelDic.intValue(for: "nextExp")
        observers.allObjects.forEach { $0.onUserLevelChangedBySendGift?(level: level, curExp: curExp, nextExp: nextExp) }
    }
    
    private func notifySendGiftSuccess(_ category: Int, _ num: Int, _ gift: MOGiftlist, _ info: MOGiftInfo) {
        observers.allObjects.forEach { $0.onSendGiftSuccess?(category: category, num: num, gift: gift, info: info) }
    }
    
    private func notifySendBagSuccess(_ category: Int, _ num: Int, _ gift: MOGiftlist, _ info: MOGiftInfo, _ newItem: MOGiftlist?) {
        observers.allObjects.forEach { $0.onSendBagSuccess?(category: category, num: num, gift: gift, info: info, newItem: newItem) }
    }
}

extension MOGiftListViewModel/*: RoomMainEvent*/ {
    func onJoinedRoom(room: MOLiveDetail) {
        guard room.currentRoom.id != curRoomId else { return }
        curRoom = room
        giftCache.removeAll()
        giftNextTags.removeAll()
        checkGiftCategory()
    }
}