//
// ExercisesListView.swift
// Workouts
//
// Created by rzen on 7/13/25 at 4:30 PM.
//
// Copyright 2025 Rouslan Zenetl. All Rights Reserved.
//

import SwiftUI
import SwiftData

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

    @Query(sort: [SortDescriptor(\ExerciseType.name)]) var groups: [ExerciseType]
    
    @State var showingAddSheet = false
    @State var itemToEdit: Exercise? = nil
    @State var itemToDelete: Exercise? = nil
    
    private func save () {
        try? modelContext.save()
    }
    
    var body: some View {
        NavigationStack {
            Form {
                ForEach (groups) { group in
                    let items = group.exercises ?? []
                    let itemCount = items.count
                    if itemCount > 0 {
                        Section (header: Text("\(group.name) (\(itemCount))")) {
                            ForEach (items) { item in
                                ListItem(title: item.name)
                                    .swipeActions(edge: .trailing, allowsFullSwipe: false) {
                                        Button (role: .destructive) {
                                            itemToDelete = item
                                        } label: {
                                            
                                            Label("Delete", systemImage: "trash")
                                        }
                                        Button {
                                            itemToEdit = item
                                        } label: {
                                            Label("Edit", systemImage: "pencil")
                                        }
                                        .tint(.indigo)
                                    }
                            }
                        }
                    }
                }
            }
            .navigationTitle("Exercises")
            .toolbar {
                ToolbarItem(placement: .navigationBarTrailing) {
                    Button(action: {
                        showingAddSheet.toggle()
                    }) {
                        Image(systemName: "plus")
                    }
                }
            }
            .sheet(isPresented: $showingAddSheet) {
                ExerciseAddEditView()
            }
            .sheet(item: $itemToEdit) { item in
                ExerciseAddEditView(model: item)
            }
            .confirmationDialog(
                "Delete?",
                isPresented: Binding<Bool>(
                    get: { itemToDelete != nil },
                    set: { if !$0 { itemToDelete = nil } }
                ),
                titleVisibility: .visible
            ) {
                Button("Delete", role: .destructive) {
                    if let itemToDelete = itemToDelete {
                        modelContext.delete(itemToDelete)
                        try? modelContext.save()
                        self.itemToDelete = nil
                    }
                }
                Button("Cancel", role: .cancel) {
                    itemToDelete = nil
                }
            } message: {
                Text("Are you sure you want to delete \(itemToDelete?.name ?? "this item")?")
            }
        }
    }
}