//
//  CreateViewRepsWeightView.swift
//  Werkout_ios
//
//  Created by Trey Tartt on 6/18/23.
//

import SwiftUI
import AVFoundation

struct CreateExerciseActionsView: View {
    @ObservedObject var workoutExercise: CreateWorkoutExercise
    @ObservedObject var superset: CreateWorkoutSuperSet
    var viewModel: WorkoutViewModel

    @State var avPlayer = AVPlayer(url: URL(string: BaseURLs.currentBaseURL + "/media/exercise_videos/2_Dumbbell_Lateral_Lunges.mp4") ?? URL(fileURLWithPath: "/dev/null"))
    @State private var currentVideoURL: URL?
    @State var videoExercise: Exercise? {
        didSet {
            if let viddd = self.videoExercise?.videoURL,
               let url = URL(string: BaseURLs.currentBaseURL + viddd) {
                updatePlayer(for: url)
            }
        }
    }

    var body: some View {
        VStack(spacing: WerkoutTheme.sm) {
            VStack(spacing: WerkoutTheme.xs) {
                HStack {
                    Text("Reps: ")
                        .font(WerkoutTheme.bodyText)
                        .foregroundStyle(WerkoutTheme.textSecondary)
                    Text("\(workoutExercise.reps)")
                        .foregroundColor(workoutExercise.reps == 0 && workoutExercise.duration == 0 ? WerkoutTheme.danger : WerkoutTheme.textPrimary)
                        .font(WerkoutTheme.bodyText)
                        .bold()

                    Stepper("", onIncrement: {
                        workoutExercise.increaseReps()
                    }, onDecrement: {
                        workoutExercise.decreaseReps()
                    })
                    .tint(WerkoutTheme.accent)
                    .accessibilityLabel("Reps")
                }
            }

            HStack {
                Text("Weight: ")
                    .font(WerkoutTheme.bodyText)
                    .foregroundStyle(WerkoutTheme.textSecondary)
                Text("\(workoutExercise.weight)")
                    .font(WerkoutTheme.bodyText)
                    .foregroundStyle(WerkoutTheme.textPrimary)

                Stepper("", onIncrement: {
                    workoutExercise.increaseWeight()
                }, onDecrement: {
                    workoutExercise.decreaseWeight()
                })
                .tint(WerkoutTheme.accent)
                .accessibilityLabel("Weight")
            }

            HStack {
                Text("Duration: ")
                    .font(WerkoutTheme.bodyText)
                    .foregroundStyle(WerkoutTheme.textSecondary)
                Text("\(workoutExercise.duration)")
                    .foregroundColor(
                        workoutExercise.reps == 0 && workoutExercise.duration == 0 ? WerkoutTheme.danger : WerkoutTheme.textPrimary
                    )
                    .font(WerkoutTheme.bodyText)
                    .bold()

                Stepper("", onIncrement: {
                    workoutExercise.increaseDuration()
                }, onDecrement: {
                    workoutExercise.decreaseDuration()
                })
                .tint(WerkoutTheme.accent)
                .accessibilityLabel("Duration")
            }

            GlassEffectContainer {
                HStack {
                    Spacer()
                    Button(action: {
                        videoExercise = workoutExercise.exercise
                    }) {
                        Image(systemName: "video.fill")
                            .foregroundStyle(WerkoutTheme.textPrimary)
                    }
                    .frame(width: 88, height: 44)
                    .glassEffect(.regular.interactive())
                    .tint(WerkoutTheme.accent)
                    .buttonStyle(BorderlessButtonStyle())
                    .accessibilityLabel("Preview exercise video")
                    .accessibilityHint("Opens a video preview for this exercise")

                    Spacer()

                    Spacer()

                    Button(action: {
                        superset
                            .deleteExerciseForChosenSuperset(exercise: workoutExercise)
                        viewModel.increaseRandomNumberForUpdating()
                    }) {
                        Image(systemName: "trash.fill")
                            .foregroundStyle(WerkoutTheme.textPrimary)
                    }
                    .frame(width: 88, height: 44)
                    .glassEffect(.regular.interactive())
                    .tint(WerkoutTheme.danger)
                    .buttonStyle(BorderlessButtonStyle())
                    .accessibilityLabel("Delete exercise")
                    .accessibilityHint("Removes this exercise from the superset")

                    Spacer()
                }
            }
        }
        .sheet(item: $videoExercise) { exercise in
            PlayerView(player: $avPlayer)
                .onAppear{
                    avPlayer.isMuted = true
                    avPlayer.play()
                }
        }
        .onDisappear {
            avPlayer.pause()
        }
    }

    private func updatePlayer(for url: URL) {
        if currentVideoURL == url {
            avPlayer.seek(to: .zero)
            avPlayer.isMuted = true
            avPlayer.play()
            return
        }

        currentVideoURL = url
        avPlayer = AVPlayer(url: url)
        avPlayer.isMuted = true
        avPlayer.play()
    }
}

//struct CreateViewRepsWeightView_Previews: PreviewProvider {
//    static var previews: some View {
//        CreateViewRepsWeightView()
//    }
//}