//
// SettingsView.swift
// Workouts
//
// Copyright 2025 Rouslan Zenetl. All Rights Reserved.
//

import SwiftUI
import CoreData
import IndieAbout

struct SettingsView: View {
    @Environment(\.managedObjectContext) private var viewContext

    @FetchRequest(
        sortDescriptors: [
            NSSortDescriptor(keyPath: \Split.order, ascending: true),
            NSSortDescriptor(keyPath: \Split.name, ascending: true)
        ],
        animation: .default
    )
    private var splits: FetchedResults<Split>

    @State private var showingAddSplitSheet = false

    var body: some View {
        NavigationStack {
            Form {
                // MARK: - Splits Section
                Section(header: Text("Splits")) {
                    if splits.isEmpty {
                        HStack {
                            Spacer()
                            VStack(spacing: 8) {
                                Image(systemName: "dumbbell.fill")
                                    .font(.largeTitle)
                                    .foregroundColor(.secondary)
                                Text("No Splits Yet")
                                    .font(.headline)
                                    .foregroundColor(.secondary)
                                Text("Create a split to organize your workout routine.")
                                    .font(.caption)
                                    .foregroundColor(.secondary)
                                    .multilineTextAlignment(.center)
                            }
                            .padding(.vertical)
                            Spacer()
                        }
                    } else {
                        ForEach(splits, id: \.objectID) { split in
                            NavigationLink {
                                SplitDetailView(split: split)
                            } label: {
                                HStack {
                                    Image(systemName: split.systemImage)
                                        .foregroundColor(Color.color(from: split.color))
                                        .frame(width: 24)
                                    Text(split.name)
                                    Spacer()
                                    Text("\(split.exercisesArray.count)")
                                        .foregroundColor(.secondary)
                                }
                            }
                        }
                    }

                    Button {
                        showingAddSplitSheet = true
                    } label: {
                        HStack {
                            Image(systemName: "plus.circle.fill")
                                .foregroundColor(.accentColor)
                            Text("Add Split")
                        }
                    }
                }

                // MARK: - Account Section
                Section(header: Text("Account")) {
                    Text("Settings coming soon")
                        .foregroundColor(.secondary)
                }

                // MARK: - About Section
                Section {
                    IndieAbout(configuration: AppInfoConfiguration(
                        documents: [
                            .custom(title: "Changelog", filename: "CHANGELOG", extension: "md"),
                            .license(),
                            .acknowledgements()
                        ]
                    ))
                }
            }
            .navigationTitle("Settings")
            .sheet(isPresented: $showingAddSplitSheet) {
                SplitAddEditView(split: nil)
            }
        }
    }
}

#Preview {
    SettingsView()
        .environment(\.managedObjectContext, PersistenceController.preview.viewContext)
}