//
//  VipRechargeVM.swift
//  QuickLocation
//
//  Created by 八条 on 2026/6/3.
//

import RxSwift
import RxCocoa
import RxDataSources
import SwiftyUserDefaults

typealias ExpenseListSectionModel = SectionModel<String, VipExpenseModel>
typealias VipRightsListSectionModel = SectionModel<String, VipRightsModel>

class VipRechargeVM {
    struct Input {
        
    }
    struct Output {
        var sectionedItems: Observable<[ExpenseListSectionModel]>
        var vipRightItems: Observable<[VipRightsListSectionModel]>
    }
    
    let input: Input
    let output: Output
    var disposeBag = DisposeBag()
    
    var createCount = BehaviorRelay<String>(value: "0")
    var groupCount = BehaviorRelay<String>(value: "0")
    var joinCount = BehaviorRelay<String>(value: "0")
    
    private let sectionedItems = PublishSubject<[ExpenseListSectionModel]>()
    private let vipRightsItems = PublishSubject<[VipRightsListSectionModel]>()
    
    private let vipRightsList: [VipRightsModel] = [
        VipRightsModel(icon: "VipRecharge/location", title: "定位查询"),
        VipRightsModel(icon: "VipRecharge/map", title: "地图样式"),
        VipRightsModel(icon: "VipRecharge/sos", title: "SOS求救"),
        VipRightsModel(icon: "VipRecharge/bubble", title: "创建气泡"),
        VipRightsModel(icon: "VipRecharge/ad", title: "无广告"),
        VipRightsModel(icon: "VipRecharge/battery", title: "电池电量"),
        VipRightsModel(icon: "VipRecharge/emoji", title: "趣味表情"),
        VipRightsModel(icon: "VipRecharge/service", title: "专属客服")
    ]
    
    var selectedIndex: Int = -1 {
        didSet {
            refreshData()
            loadVipRightsData()
        }
    }
    var list: [VipExpenseModel] = []
    var payType: String {
        guard list.count > 0 else { return "" }
        return list[selectedIndex].pay_type
    }

    var price: String {
        guard list.count > 0 else { return "" }
        return list[selectedIndex].price
    }
    
    var discountPriceString: String {
        guard list.count > 0 else { return "已优惠0元" }
        
        let price = list[selectedIndex].price
        let oPrice = list[selectedIndex].origin_price
        
        guard oPrice.int >= price.int else { return "已优惠0元" }
        
        let diff = oPrice.double - price.double
        let diffStr = diff.truncatingRemainder(dividingBy: 1) == 0 ? String(format: "%.0f", diff) : String(diff)
        return "已优惠\(diffStr)元"
    }
    
    // MARK: - 加载数据
    func loadData(list: [VipExpenseModel]) {
        self.list = list
        selectedIndex = list.firstIndex(where: { $0.checked == true }) ?? 0
        sectionedItems.onNext(list.mapSection())
    }
    
    func refreshData() {
        sectionedItems.onNext(list.mapSection())
    }
    
    func loadVipRightsData() {
        // 20040（没有专属客服）: 5 10 5   20041: 10 20 10    20042: 15 30 15
        let model = list[selectedIndex]
        var tmpList = vipRightsList
        
        switch model.goods_id {
        case "20040":
            createCount.accept("5")
            groupCount.accept("10")
            joinCount.accept("5")
            let _ = tmpList.popLast()
        case "20041":
            createCount.accept("10")
            groupCount.accept("20")
            joinCount.accept("10")
        case "20042":
            createCount.accept("15")
            groupCount.accept("30")
            joinCount.accept("15")
        default:
            createCount.accept("5")
            groupCount.accept("10")
            joinCount.accept("5")
        }
        
        vipRightsItems.onNext(tmpList.mapSection())
    }
    
    // MARK: - init
    init() {
        input = Input()
        output = Output(
            sectionedItems: sectionedItems.asObservable(),
            vipRightItems: vipRightsItems.asObservable()
        )
    }
}

struct VipRightsModel {
    var icon: String
    var title: String
}