//
//  SharingView.swift
//  Feels (iOS)
//
//  Created by Trey Tartt on 2/6/22.
//

import SwiftUI

struct WrappedSharable: Hashable, Equatable {
    static func == (lhs: WrappedSharable, rhs: WrappedSharable) -> Bool {
        lhs.id == rhs.id
    }
    
    func hash(into hasher: inout Hasher) {
        hasher.combine(id)
    }
    
    let id = UUID()
    let preview: AnyView
    let destination: AnyView
    let description: String
}

struct SharingView: View {
    @AppStorage(UserDefaultsStore.Keys.theme.rawValue, store: GroupUserDefaults.groupDefaults) private var theme: Theme = .system
    
    @State private var selectedShare: WrappedSharable?
    @State private var showSharingTemplate = false
    
    let sharebleItems: [WrappedSharable] = [
        WrappedSharable(preview: AnyView(
            AllMoodsTotalTemplate(isPreview: true, startDate: Date(), endDate: Date())
        ),destination: AnyView(
            AllMoodsTotalTemplate(isPreview: false, startDate: Date(), endDate: Date())
        ),description: AllMoodsTotalTemplate.description),
        
        WrappedSharable(preview: AnyView(
            CurrentStreakTemplate(isPreview: true, startDate: Date(), endDate: Date())
        ), destination: AnyView(
            CurrentStreakTemplate(isPreview: false, startDate: Date(), endDate: Date())
        ), description: CurrentStreakTemplate.description),
        
        WrappedSharable(preview: AnyView(
            LongestStreakTemplate(isPreview: true, startDate: Date(), endDate: Date())
        ), destination: AnyView(
            LongestStreakTemplate(isPreview: false, startDate: Date(), endDate: Date())
        ), description: LongestStreakTemplate.description),
        
        WrappedSharable(preview: AnyView(
            MonthTotalTemplate(isPreview: true, startDate: Date(), endDate: Date())
        ), destination: AnyView(
            MonthTotalTemplate(isPreview: false, startDate: Date(), endDate: Date())
        ), description: MonthTotalTemplate.description),
        
        WrappedSharable(preview: AnyView(
            WeekTotalTemplate(isPreview: true, startDate: Date(), endDate: Date())
        ), destination: AnyView(
            WeekTotalTemplate(isPreview: false, startDate: Date(), endDate: Date())
        ), description: WeekTotalTemplate.description)
    ]
    
    func didDismiss() {
        showSharingTemplate = false
    }
    
    var body: some View {
        ScrollView {
            ForEach(sharebleItems, id: \.self) { item in
                ZStack {
                    Color(theme.currentTheme.secondaryBGColor)
                    
                    item.preview
                        .opacity(0.5)
                    
                    VStack {
                        Spacer()
                        Text(item.description)
                            .frame(minWidth: 0, maxWidth: .infinity)
                            .background(
                                Color.white
                            )
                            .frame(minHeight: 22, maxHeight: 22)
                    }
                }
                .frame(minHeight: 88, maxHeight: 88)
                .cornerRadius(10, corners: [.topLeft, .topRight, .bottomLeft, .bottomRight])
                .onTapGesture ( perform: {
                    selectedShare = item
                    showSharingTemplate = true
                })
            }
            .padding()
        }.sheet(isPresented: $showSharingTemplate,
                onDismiss: didDismiss) {
            selectedShare?.destination
        }
    }
}

struct SharingView_Previews: PreviewProvider {
    static var previews: some View {
        SharingView()
    }
}