//
//  CreateIconView.swift
//  Feels (iOS)
//
//  Created by Trey Tartt on 2/13/22.
//

import SwiftUI

struct CreateWidgetView: View {
    @AppStorage(UserDefaultsStore.Keys.theme.rawValue, store: GroupUserDefaults.groupDefaults) private var theme: Theme = .system
    @Environment(\.dismiss) var dismiss
    @AppStorage(UserDefaultsStore.Keys.textColor.rawValue, store: GroupUserDefaults.groupDefaults) private var textColor: Color = .black

    @StateObject private var customWidget: CustomWidgetModel
    
    @State private var mouth: CustomWidgetMouthOptions = CustomWidgetMouthOptions.defaultOption
    @State private var showRightEyeImagePicker: Bool = false
    @State private var showLeftEyeImagePicker: Bool = false
    @State private var showMuthImagePicker: Bool = false

    var widgetView: CustomWidgetView
    
    private var randomElements: [AnyView]
    
    init(customWidget: CustomWidgetModel, randomElements: [AnyView] = [AnyView]()) {
        self.randomElements = [
            AnyView(Image(CustomWidgetBackGroundOptions.selectable.randomElement()!.rawValue)
                        .resizable()
                        .frame(width: 20, height: 20)),
            AnyView(Image(CustomWidgetBackGroundOptions.selectable.randomElement()!.rawValue)
                        .resizable()
                        .frame(width: 20, height: 20)),
            AnyView(Image(CustomWidgetBackGroundOptions.selectable.randomElement()!.rawValue)
                        .resizable()
                        .frame(width: 20, height: 20)),
            AnyView(Image(CustomWidgetBackGroundOptions.selectable.randomElement()!.rawValue)
                        .resizable()
                        .frame(width: 20, height: 20))
        ]
        
        _customWidget = StateObject(wrappedValue: customWidget)
        
        widgetView = CustomWidgetView(customWidgetModel: customWidget)
    }
    
    func update(eye: CustomWidgetEyes, eyeOption: CustomWidgeImageOptions) {
        switch eye {
        case .left:
            customWidget.leftEye = eyeOption
        case .right:
            customWidget.rightEye = eyeOption
        }
    }
    
    func createRandom() {
        customWidget.bgColor = Color.random()
        customWidget.innerColor = Color.random()
        customWidget.bgOverlayColor = Color.random()
        customWidget.circleStrokeColor = Color.random()
        customWidget.leftEyeColor = Color.random()
        customWidget.rightEyeColor = Color.random()
        customWidget.mouthColor = Color.random()
        
        update(eye: .left, eyeOption: CustomWidgeImageOptions.allCases.randomElement()!)
        update(eye: .right, eyeOption: CustomWidgeImageOptions.allCases.randomElement()!)
        update(mouthOption: CustomWidgeImageOptions.allCases.randomElement()!)
        
        update(background: CustomWidgetBackGroundOptions.allCases.randomElement()!)
    }
    
    func update(mouthOption: CustomWidgeImageOptions) {
        customWidget.mouth = mouthOption
    }
    
    func update(background: CustomWidgetBackGroundOptions) {
        customWidget.background = background
    }
    
    var mixBG: some View {
        VStack {
            HStack {
                randomElements[0]
                randomElements[1]
            }
            HStack {
                randomElements[2]
                randomElements[3]
            }
        }
    }
    
    var bottomBarButtons: some View {
        Group {
            HStack(alignment: .center, spacing: 0) {
                Button(action: {
                    createRandom()
                }, label: {
                    Image(systemName: "shuffle")
                        .font(.title)
                        .foregroundColor(Color(UIColor.white))
                    
                })
                    .frame(minWidth: 0, maxWidth: .infinity)
                    .frame(height: 40)
                    .background(.blue)
                
                Button(action: {
                    UserDefaultsStore.saveCustomWidget(widgetModel: customWidget, inUse: false)
                    let impactMed = UIImpactFeedbackGenerator(style: .heavy)
                    impactMed.impactOccurred()
                    dismiss()
                }, label: {
                    Text(String(localized: "create_widget_save"))
                        .font(.title)
                        .fontWeight(.bold)
                        .foregroundColor(Color(UIColor.white))
                    
                })
                    .frame(minWidth: 0, maxWidth: .infinity)
                    .frame(height: 40)
                    .background(.green)
                
                Button(action: {
                    UserDefaultsStore.saveCustomWidget(widgetModel: customWidget, inUse: true)
                    let impactMed = UIImpactFeedbackGenerator(style: .heavy)
                    impactMed.impactOccurred()
                    dismiss()
                }, label: {
                    Text(String(localized: "create_widget_use"))
                        .font(.title)
                        .fontWeight(.bold)
                        .foregroundColor(Color(UIColor.white))
                    
                })
                    .frame(height: 40)
                    .frame(minWidth: 0, maxWidth: .infinity)
                    .background(.pink)
                
                if customWidget.isSaved {
                    Button(action: {
                        UserDefaultsStore.deleteCustomWidget(withUUID: customWidget.uuid)
                        let impactMed = UIImpactFeedbackGenerator(style: .heavy)
                        impactMed.impactOccurred()
                        dismiss()
                    }, label: {
                        Image(systemName: "trash")
                            .font(.title)
                            .foregroundColor(Color(UIColor.white))
                        
                    })
                        .frame(height: 40)
                        .frame(minWidth: 0, maxWidth: .infinity)
                        .background(.orange)
                }
            }
        }
    }
    
    var colorOptions: some View {
        Group {
            VStack {
                HStack(spacing: 0) {
                    VStack(alignment: .center) {
                        Text(String(localized: "create_widget_background_color"))
                        ColorPicker("", selection: $customWidget.bgColor)
                            .labelsHidden()
                    }
                    .frame(minWidth: 0, maxWidth: .infinity)
                    
                    VStack(alignment: .center) {
                        Text(String(localized: "create_widget_inner_color"))
                        ColorPicker("", selection: $customWidget.innerColor)
                            .labelsHidden()
                    }
                    .frame(minWidth: 0, maxWidth: .infinity)
                    
                    VStack(alignment: .center) {
                        Text(String(localized: "create_widget_face_outline_color"))
                        ColorPicker("", selection: $customWidget.circleStrokeColor)
                            .labelsHidden()
                    }
                    .frame(minWidth: 0, maxWidth: .infinity)
                }
                
                HStack(spacing: 0) {
                    VStack(alignment: .center) {
                        Text(String(localized: "create_widget_view_left_eye_color"))
                        ColorPicker("", selection: $customWidget.leftEyeColor)
                            .labelsHidden()
                    }
                    .frame(minWidth: 0, maxWidth: .infinity)
                    
                    VStack(alignment: .center) {
                        Text(String(localized: "create_widget_view_right_eye_color"))
                        ColorPicker("", selection: $customWidget.rightEyeColor)
                            .labelsHidden()
                    }
                    .frame(minWidth: 0, maxWidth: .infinity)
                    
                    VStack(alignment: .center) {
                        Text(String(localized: "create_widget_view_mouth_color"))
                        ColorPicker("", selection: $customWidget.mouthColor)
                            .labelsHidden()
                    }
                    .frame(minWidth: 0, maxWidth: .infinity)
                }
            }
            .padding()
            .background(
                theme.currentTheme.secondaryBGColor
            )
        }
    }
    
    var bgImageOptions: some View {
        Group {
            HStack {
                ForEach(CustomWidgetBackGroundOptions.selectable, id: \.self) { bg in
                    Image(bg.rawValue, bundle: .main)
                        .resizable()
                        .aspectRatio(contentMode: .fill)
                        .frame(minWidth: 10, idealWidth: 40, maxWidth: 40,
                               minHeight: 10, idealHeight: 40, maxHeight: 40,
                               alignment: .center)
                        .onTapGesture {
                            update(background: bg)
                        }
                }
                mixBG
                    .onTapGesture {
                        update(background: .random)
                    }
                
                ColorPicker("", selection: $customWidget.bgOverlayColor)
            }
            .padding()
            .background(
                theme.currentTheme.secondaryBGColor
            )
        }
    }
    
    var faceImageOptions: some View {
        Group {
            HStack(alignment: .center) {
                Spacer()
                VStack(alignment: .center) {
                    Text(String(localized: "create_widget_view_left_eye"))
                        .onTapGesture(perform: {
                            showLeftEyeImagePicker.toggle()
                        })
                    .foregroundColor(textColor)
                    .foregroundColor(textColor)
                }
                Spacer()
                VStack(alignment: .center) {
                    Text(String(localized: "create_widget_view_right_eye"))
                        .onTapGesture(perform: {
                            showRightEyeImagePicker.toggle()
                        })
                    .foregroundColor(textColor)
                }
                Spacer()
                VStack(alignment: .center) {
                    Text(String(localized: "create_widget_view_mouth"))
                        .onTapGesture(perform: {
                            showMuthImagePicker.toggle()
                        })
                    .foregroundColor(textColor)
                    .foregroundColor(textColor)
                }
                Spacer()
            }
            .padding()
            .background(
                theme.currentTheme.secondaryBGColor
            )
        }
    }
    
    var body: some View {
        VStack(spacing: 0) {
            widgetView
                .cornerRadius(10)
                .padding()
            
            Spacer()
            
            Divider().background(Color(UIColor.tertiarySystemBackground))
            
            faceImageOptions
            
            Divider().background(Color(UIColor.tertiarySystemBackground))
            
            bgImageOptions
            
            Divider().background(Color(UIColor.tertiarySystemBackground))
            
            colorOptions
            
            Divider().background(Color(UIColor.tertiarySystemBackground))
            
            bottomBarButtons
        }
        .sheet(isPresented: $showRightEyeImagePicker) {
            ImagePickerGridView(pickedImageClosure: { image in
                update(eye: .right, eyeOption: image)
            })
        }
        .sheet(isPresented: $showLeftEyeImagePicker) {
            ImagePickerGridView(pickedImageClosure: { image in
                update(eye: .left, eyeOption: image)
            })
        }
        .sheet(isPresented: $showMuthImagePicker) {
            ImagePickerGridView(pickedImageClosure: { image in
                update(mouthOption: image)
            })
        }
    }
}

struct CreateIconView_Previews: PreviewProvider {
    static var widget: CustomWidgetModel {
        let _widget = CustomWidgetModel.randomWidget
        _widget.isSaved = true
        return _widget
    }
    
    static var previews: some View {
        Group {
            CreateWidgetView(customWidget: CreateIconView_Previews.widget)
            
            CreateWidgetView(customWidget: CustomWidgetModel.randomWidget)
                .preferredColorScheme(.dark)
        }
    }
}