//
//  SheetView.swift
//  Screaming Reminder
//
//  Created by Amine Bou on 20/07/2024.
//

import SwiftUI
import SwiftData

struct SheetView: View {
    @Environment(\.dismiss) private var dismiss
    @Environment(\.modelContext) private var modelContext


    @Binding var selectedLabel: String
    @Binding var selectedReminder: Reminder?
    @Binding var selectedDate: [Date]

    var body: some View {

        Form {
            LabeledContent {
                TextField("", text: $selectedLabel)
            } label: {
                Text("Nom")
            }

            VStack {
                ForEach($selectedDate.indices, id: \.self) { i in
                    HStack {
                        DatePicker("Quand", selection: $selectedDate[i], displayedComponents: .hourAndMinute)
                        Button(action: {
                            selectedDate.remove(at: i)
                        }) {
                            Label("", systemImage: "minus.circle.fill")
                        }.buttonStyle(.borderless)
                            .disabled(selectedDate.count == 1)
                    }

                }
            }

            Button(action: {
                selectedDate.append(selectedDate.last!)
            }) {
                Label("Ajouter une notification", systemImage: "plus")
            }.buttonStyle(.borderless)

            HStack {
                Button("Cancel") {
                    dismiss()
                }
                if ($selectedReminder.wrappedValue != nil) {
                    Spacer()
                    Button("Supprimer") {
                        deleteReminder()
                        dismiss()
                    }.buttonStyle(.bordered)
                }
                Spacer()
                Button("Confirm") {
                    upsertReminder()
                    dismiss()
                }.buttonStyle(.borderedProminent)
            }
        }.formStyle(.grouped)
            .textFieldStyle(.roundedBorder)

    }

    private func deleteReminder() {
        withAnimation {
            cancelNotifications(reminder: $selectedReminder.wrappedValue!)
            modelContext.delete($selectedReminder.wrappedValue!)
        }
    }
    private func upsertReminder() {
        withAnimation {
            let reminder: Reminder
            if (selectedReminder != nil) {
                cancelNotifications(reminder: $selectedReminder.wrappedValue!)
                // Should i Wait ?
                
                selectedReminder!.label = $selectedLabel.wrappedValue
                selectedReminder!.when = $selectedDate.wrappedValue
                reminder = selectedReminder!
            } else {
                reminder = Reminder(label: $selectedLabel.wrappedValue, when: $selectedDate.wrappedValue)
                modelContext.insert(reminder)
            }
            scheduleNotifications(reminder: reminder)
        }
    }

}