//
//  ThemePicker.swift
//  Feels (iOS)
//
//  Created by Trey Tartt on 4/2/22.
//

import SwiftUI

struct ThemePickerView: View {
    @AppStorage(UserDefaultsStore.Keys.theme.rawValue, store: GroupUserDefaults.groupDefaults) private var theme: Theme = .system
    @AppStorage(UserDefaultsStore.Keys.textColor.rawValue, store: GroupUserDefaults.groupDefaults) private var textColor: Color = DefaultTextColor.textColor
    
    var body: some View {
        ZStack {
            theme.currentTheme.secondaryBGColor
            VStack {
                HStack {
                    Spacer()
                    ForEach(Theme.allCases, id:\.rawValue) { aTheme in
                        Button(action: {
                            textColor = aTheme.currentTheme.labelColor
                            theme = aTheme
                            EventLogger.log(event: "change_theme_id", withData: ["id": aTheme.rawValue])
                        }, label: {
                            VStack {
                                aTheme.currentTheme.preview
                                    .overlay(
                                        Circle()
                                            .stroke(Color(UIColor.systemGray), style: StrokeStyle(lineWidth: 2))
                                    )
                                Text(aTheme.title)
                                    .foregroundColor(textColor)
                                    .font(.body)
                            }
                        })
                        .contentShape(Rectangle())
                        .background(
                            RoundedRectangle(cornerRadius: 10, style: .continuous)
                                .fill(theme == aTheme ? theme.currentTheme.bgColor : .clear)
                                .padding(-5)
                            
                        )
                        Spacer()
                    }
                }
                .padding(.top)
            }
            .padding()
        }
        .fixedSize(horizontal: false, vertical: true)
        .cornerRadius(Constants.viewsCornerRaidus, corners: [.topLeft, .topRight, .bottomLeft, .bottomRight])
    }
}

struct ThemePickerView_Previews: PreviewProvider {
    static var previews: some View {
        ThemePickerView()
    }
}