//
// WorkoutLogsView.swift
// Workouts Watch App
//
// Copyright 2025 Rouslan Zenetl. All Rights Reserved.
//

import SwiftUI
import CoreData

struct WorkoutLogsView: View {
    @Environment(\.managedObjectContext) private var viewContext
    @EnvironmentObject var connectivityManager: WatchConnectivityManager

    @FetchRequest(
        sortDescriptors: [NSSortDescriptor(keyPath: \Workout.start, ascending: false)],
        animation: .default
    )
    private var workouts: FetchedResults<Workout>

    var body: some View {
        NavigationStack {
            List {
                ForEach(workouts, id: \.objectID) { workout in
                    NavigationLink(destination: WorkoutLogListView(workout: workout)) {
                        WorkoutRow(workout: workout)
                    }
                }
            }
            .overlay {
                if workouts.isEmpty {
                    ContentUnavailableView(
                        "No Workouts",
                        systemImage: "list.bullet.clipboard",
                        description: Text("Tap sync or start a workout from iPhone.")
                    )
                }
            }
            .navigationTitle("Workouts")
            .toolbar {
                ToolbarItem(placement: .topBarTrailing) {
                    Button {
                        connectivityManager.requestSync()
                    } label: {
                        Image(systemName: "arrow.triangle.2.circlepath")
                    }
                }
            }
        }
    }
}

// MARK: - Workout Row

struct WorkoutRow: View {
    @ObservedObject var workout: Workout

    var body: some View {
        VStack(alignment: .leading, spacing: 4) {
            Text(workout.split?.name ?? Split.unnamed)
                .font(.headline)
                .lineLimit(1)

            HStack {
                Text(workout.start.formatDate())
                    .font(.caption2)
                    .foregroundColor(.secondary)

                Spacer()

                statusIndicator
            }
        }
        .padding(.vertical, 4)
    }

    @ViewBuilder
    private var statusIndicator: some View {
        switch workout.status {
        case .completed:
            Image(systemName: "checkmark.circle.fill")
                .foregroundColor(.green)
        case .inProgress:
            Image(systemName: "circle.dotted")
                .foregroundColor(.orange)
        case .notStarted:
            Image(systemName: "circle")
                .foregroundColor(.secondary)
        case .skipped:
            Image(systemName: "xmark.circle")
                .foregroundColor(.secondary)
        }
    }
}

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