//
// ActiveWorkoutListView.swift
// Workouts
//
// Created by rzen on 7/20/25 at 6:35 PM.
//
// Copyright 2025 Rouslan Zenetl. All Rights Reserved.
//

import SwiftUI
import SwiftData

struct ActiveWorkoutListView: View {
    @Environment(\.modelContext) private var modelContext
    let workouts: [Workout]
    
    var body: some View {
        List {
            ForEach(workouts) { workout in
                NavigationLink {
                    WorkoutDetailView(workout: workout)
                } label: {
                    WorkoutCardView(workout: workout)
                }
//                .listRowSeparator(.hidden)
                .listRowBackground(
                    RoundedRectangle(cornerRadius: 12)
                        .fill(Color.secondary.opacity(0.2))
                        .padding(
                            EdgeInsets(
                                top: 4,
                                leading: 8,
                                bottom: 4,
                                trailing: 8
                            )
                        )
                )
            }
        }
        .listStyle(.carousel)
//        .navigationTitle("Workouts")
    }
}

struct WorkoutCardView: View {
    let workout: Workout
    
    var body: some View {
        VStack(alignment: .leading) {
            // Split icon
            if let split = workout.split {
                Image(systemName: split.systemImage)
                    .font(.system(size: 48))
                    .foregroundStyle(split.getColor())
            } else {
                Image(systemName: "dumbbell.fill")
                    .font(.system(size: 24))
                    .foregroundStyle(.gray)
            }
            
//            VStack(alignment: .leading, spacing: 4) {
                // Split name
                Text(workout.split?.name ?? "Workout")
                    .font(.headline)
                    .foregroundStyle(.white)
                
                // Workout status
                Text(workout.status?.name ?? "Not Started")
                    .font(.caption)
                    .foregroundStyle(Color.accentColor)
//            }
            
//            Spacer()
        }
//        .padding(.vertical, 8)
    }
}

struct WorkoutDetailView: View {
    let workout: Workout
    
    var body: some View {
        VStack(alignment: .center, spacing: 8) {
            if let logs = workout.logs?.sorted(by: { $0.order < $1.order }), !logs.isEmpty {
                List {
                    ForEach(logs) { log in
                        NavigationLink {
                            WorkoutLogDetailView(log: log)
                        } label: {
                            WorkoutLogCardView(log: log)
                        }
                        .listRowBackground(
                            RoundedRectangle(cornerRadius: 12)
                                .fill(Color.secondary.opacity(0.2))
                                .padding(
                                    EdgeInsets(
                                        top: 4,
                                        leading: 8,
                                        bottom: 4,
                                        trailing: 8
                                    )
                                )
                        )
                    }
                }
                .listStyle(.carousel)
            } else {
                Text("No exercises in this workout")
                    .font(.body)
                    .foregroundStyle(.secondary)
                    .padding()
                
                Spacer()
            }
        }
    }
}

struct WorkoutLogCardView: View {
    let log: WorkoutLog
    
    var body: some View {
        VStack(alignment: .leading, spacing: 8) {
            // Exercise name
            Text(log.exerciseName)
                .font(.headline)
                .lineLimit(1)
            
            // Status
            Text(log.status?.name ?? "Not Started")
                .font(.caption)
                .foregroundStyle(Color.accentColor)
            
            // Sets, Reps, Weight
            HStack(spacing: 12) {
                Text("\(log.weight) lbs")
                
                Spacer()
                
                Text("\(log.sets) × \(log.reps)")
            }
        }
    }
}

struct WorkoutLogDetailView: View {
    let log: WorkoutLog
    
    var body: some View {

            NavigationLink {
                ExerciseProgressControlView(log: log)
            } label: {
                VStack(alignment: .center) {
                    Text(log.exerciseName)
                        .font(.title)
                        .lineLimit(1) // Ensures it stays on one line
                        .minimumScaleFactor(0.5) // Scales down to 50% if needed
                        .layoutPriority(1) // Prioritize this view in tight layouts
                    
                    HStack (alignment: .bottom) {
                        Text("\(log.weight)")
                        Text( "lbs")
                            .fontWeight(.light)
                            .padding([.trailing], 10)
                        
                        Text("\(log.sets)")
                        Text("×")
                            .fontWeight(.light)
                        Text("\(log.reps)")
                        //                Text("\(log.weight) lbs × \(log.sets) × \(log.reps)")
                    }
                    .font(.title3)
                    .lineLimit(1) // Ensures it stays on one line
                    .minimumScaleFactor(0.5) // Scales down to 50% if needed
                    .layoutPriority(1) // Prioritize this view in tight layouts
                    
                    Text(log.status?.name ?? "Not Started")
                        .foregroundStyle(Color.accentColor)
                    
                    Text("Tap to start")
                        .foregroundStyle(Color.accentColor)

                }
                .padding()
                
            }
            .buttonStyle(.plain)
    }
    
    private func statusColor(for status: WorkoutStatus?) -> Color {
        guard let status = status else { return .secondary }
        
        switch status {
        case .notStarted:
            return .secondary
        case .inProgress:
            return .blue
        case .completed:
            return .green
        case .skipped:
            return .red
        }
    }
}

//#Preview {
//    let container = AppContainer.preview
//    let split = Split(name: "Upper Body", color: "blue", systemImage: "figure.strengthtraining.traditional")
//    let workout1 = Workout(start: Date(), end: nil, split: split)
//    workout1.status = .inProgress
//    
//    let split2 = Split(name: "Lower Body", color: "red", systemImage: "figure.run")
//    let workout2 = Workout(start: Date().addingTimeInterval(-3600), end: nil, split: split2)
//    workout2.status = .notStarted
//    
//    return ActiveWorkoutListView(workouts: [workout1, workout2])
//        .modelContainer(container)
//}