//
// ExerciseFigureReviewView.swift
// Workouts
//
// Copyright 2026 Rouslan Zenetl. All Rights Reserved.
//

#if DEBUG
import SwiftUI

/// Debug-only QA screen (Settings → Developer): swipe through every bundled
/// exercise to eyeball its stick-figure rig for glitches, flipping between the
/// looping figure and the authored reference copy with a segmented picker. The
/// picker state is shared across pages so a figure-only sweep stays in figure mode.
struct ExerciseFigureReviewView: View {
    private enum Pane: String, CaseIterable, Identifiable {
        case figure = "Figure"
        case info = "Info"
        var id: String { rawValue }
    }

    private let names = ExerciseMotionLibrary.exerciseNames

    @State private var index = 0
    @State private var pane: Pane = .figure

    var body: some View {
        VStack(spacing: 0) {
            Picker("Pane", selection: $pane) {
                ForEach(Pane.allCases) { pane in
                    Text(pane.rawValue).tag(pane)
                }
            }
            .pickerStyle(.segmented)
            .padding(.horizontal)
            .padding(.bottom, 8)

            TabView(selection: $index) {
                ForEach(Array(names.enumerated()), id: \.offset) { i, name in
                    page(for: name)
                        .tag(i)
                }
            }
            .tabViewStyle(.page(indexDisplayMode: .never))
        }
        .navigationTitle(names.indices.contains(index) ? names[index] : "Exercises")
        .navigationBarTitleDisplayMode(.inline)
        .toolbar {
            ToolbarItem(placement: .primaryAction) {
                Text("\(index + 1) / \(names.count)")
                    .font(.subheadline)
                    .monospacedDigit()
                    .foregroundStyle(.secondary)
            }
        }
    }

    @ViewBuilder
    private func page(for name: String) -> some View {
        switch pane {
        case .figure:
            ExerciseFigureSlot(exerciseName: name)
        case .info:
            ScrollView {
                Group {
                    if let info = ExerciseInfoLibrary.info(for: name) {
                        ExerciseInfoContent(info: info)
                    } else {
                        Text("No reference copy for this exercise.")
                            .foregroundStyle(.secondary)
                    }
                }
                .padding()
                .frame(maxWidth: .infinity, alignment: .leading)
            }
        }
    }
}
#endif