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

import RxSwift
import RxCocoa
import RxDataSources
import SwiftyUserDefaults

typealias ExpenseListSectionModel = SectionModel<String, VipExpenseModel>

class VipRechargeVM {
    struct Input {
        
    }
    struct Output {
        var sectionedItems: Observable<[ExpenseListSectionModel]>
    }
    
    let input: Input
    let output: Output
    var disposeBag = DisposeBag()
    
    private let sectionedItems = PublishSubject<[ExpenseListSectionModel]>()
    
    var selectedIndex: Int = -1
    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())
    }
    
    // MARK: - init
    init() {
        input = Input()
        output = Output(
            sectionedItems: sectionedItems.asObservable()
        )
    }
}