import SwiftUI

// MARK: - Centered Icon View

struct CaseraIconView: View {
    var houseProgress: CGFloat = 1.0
    var windowScale: CGFloat = 1.0
    var checkmarkScale: CGFloat = 1.0
    var foregroundColor: Color = Color(red: 1.0, green: 0.96, blue: 0.92)
    var backgroundColor: Color? = nil  // nil uses default gradient, otherwise uses theme color

    var body: some View {
        GeometryReader { geo in
            let size = min(geo.size.width, geo.size.height)
            let center = CGPoint(x: geo.size.width / 2, y: geo.size.height / 2)

            ZStack {
                // Background - use provided color or default gradient
                if let bgColor = backgroundColor {
                    RoundedRectangle(cornerRadius: size * 0.195)
                        .fill(
                            LinearGradient(
                                colors: [bgColor, bgColor.opacity(0.85)],
                                startPoint: .top,
                                endPoint: .bottom
                            )
                        )
                        .frame(width: size * 0.906, height: size * 0.906)
                        .position(center)
                } else {
                    RoundedRectangle(cornerRadius: size * 0.195)
                        .fill(
                            LinearGradient(
                                colors: [
                                    Color(red: 1.0, green: 0.64, blue: 0.28),
                                    Color(red: 0.96, green: 0.51, blue: 0.20)
                                ],
                                startPoint: .top,
                                endPoint: .bottom
                            )
                        )
                        .frame(width: size * 0.906, height: size * 0.906)
                        .position(center)
                }
                
                // House outline
                HousePath(progress: houseProgress)
                    .stroke(foregroundColor, style: StrokeStyle(
                        lineWidth: size * 0.055,
                        lineCap: .round,
                        lineJoin: .round
                    ))
                    .frame(width: size, height: size)
                    .position(center)
                
                // Window
                RoundedRectangle(cornerRadius: size * 0.023)
                    .fill(foregroundColor)
                    .frame(width: size * 0.102, height: size * 0.102)
                    .scaleEffect(windowScale)
                    .position(x: center.x, y: center.y - size * 0.09)
                
                // Checkmark
                CheckmarkShape()
                    .stroke(foregroundColor, style: StrokeStyle(
                        lineWidth: size * 0.0625,
                        lineCap: .round,
                        lineJoin: .round
                    ))
                    .frame(width: size, height: size)
                    .scaleEffect(checkmarkScale)
                    .position(center)
            }
        }
        .aspectRatio(1, contentMode: .fit)
    }
}

// MARK: - House Path (both sides)

struct HousePath: Shape {
    var progress: CGFloat = 1.0
    
    var animatableData: CGFloat {
        get { progress }
        set { progress = newValue }
    }
    
    func path(in rect: CGRect) -> Path {
        let w = rect.width
        let h = rect.height
        let cx = rect.midX
        let cy = rect.midY
        
        var path = Path()
        
        // Left side: roof peak -> down left wall -> foot
        path.move(to: CGPoint(x: cx, y: cy - h * 0.27))
        path.addLine(to: CGPoint(x: cx - w * 0.232, y: cy - h * 0.09))
        path.addQuadCurve(
            to: CGPoint(x: cx - w * 0.266, y: cy + h * 0.02),
            control: CGPoint(x: cx - w * 0.266, y: cy - h * 0.055)
        )
        path.addLine(to: CGPoint(x: cx - w * 0.266, y: cy + h * 0.195))
        path.addQuadCurve(
            to: CGPoint(x: cx - w * 0.207, y: cy + h * 0.254),
            control: CGPoint(x: cx - w * 0.266, y: cy + h * 0.254)
        )
        path.addLine(to: CGPoint(x: cx - w * 0.154, y: cy + h * 0.254))
        
        // Right side: roof peak -> down right wall -> foot
        path.move(to: CGPoint(x: cx, y: cy - h * 0.27))
        path.addLine(to: CGPoint(x: cx + w * 0.232, y: cy - h * 0.09))
        path.addQuadCurve(
            to: CGPoint(x: cx + w * 0.266, y: cy + h * 0.02),
            control: CGPoint(x: cx + w * 0.266, y: cy - h * 0.055)
        )
        path.addLine(to: CGPoint(x: cx + w * 0.266, y: cy + h * 0.195))
        path.addQuadCurve(
            to: CGPoint(x: cx + w * 0.207, y: cy + h * 0.254),
            control: CGPoint(x: cx + w * 0.266, y: cy + h * 0.254)
        )
        path.addLine(to: CGPoint(x: cx + w * 0.154, y: cy + h * 0.254))
        
        return path.trimmedPath(from: 0, to: progress)
    }
}

// MARK: - Checkmark Shape

struct CheckmarkShape: Shape {
    var progress: CGFloat = 1.0
    
    var animatableData: CGFloat {
        get { progress }
        set { progress = newValue }
    }
    
    func path(in rect: CGRect) -> Path {
        let w = rect.width
        let h = rect.height
        let cx = rect.midX
        let cy = rect.midY
        
        var path = Path()
        // Checkmark: starts bottom-left, goes to bottom-center, then up-right
        path.move(to: CGPoint(x: cx - w * 0.158, y: cy + h * 0.145))
        path.addLine(to: CGPoint(x: cx - w * 0.041, y: cy + h * 0.263))
        path.addLine(to: CGPoint(x: cx + w * 0.193, y: cy + h * 0.01))
        
        return path.trimmedPath(from: 0, to: progress)
    }
}

// MARK: - Animations

struct FullIntroAnimationView: View {
    @State private var houseProgress: CGFloat = 0
    @State private var windowScale: CGFloat = 0
    @State private var checkScale: CGFloat = 0
    
    var body: some View {
        CaseraIconView(
            houseProgress: houseProgress,
            windowScale: windowScale,
            checkmarkScale: checkScale
        )
        .onAppear { animate() }
    }
    
    func animate() {
        withAnimation(.easeOut(duration: 0.6)) {
            houseProgress = 1.0
        }
        withAnimation(.spring(response: 0.4, dampingFraction: 0.6).delay(0.5)) {
            windowScale = 1.0
        }
        withAnimation(.easeOut(duration: 0.25).delay(0.9)) {
            checkScale = 1.2
        }
        withAnimation(.easeInOut(duration: 0.15).delay(1.15)) {
            checkScale = 1.0
        }
    }
}

struct PulsatingCheckmarkView: View {
    @State private var checkScale: CGFloat = 1.0
    
    var body: some View {
        CaseraIconView(checkmarkScale: checkScale)
            .onAppear {
                withAnimation(.easeInOut(duration: 0.5).repeatForever(autoreverses: true)) {
                    checkScale = 1.3
                }
            }
    }
}

struct PulsingIconView: View {
    @State private var scale: CGFloat = 1.0
    var backgroundColor: Color? = nil

    var body: some View {
        CaseraIconView(backgroundColor: backgroundColor)
            .scaleEffect(scale)
            .onAppear {
                withAnimation(.easeInOut(duration: 0.8).repeatForever(autoreverses: true)) {
                    scale = 1.08
                }
            }
    }
}

struct BouncyIconView: View {
    @State private var offset: CGFloat = -300
    @State private var scale: CGFloat = 0.5
    
    var body: some View {
        CaseraIconView()
            .scaleEffect(scale)
            .offset(y: offset)
            .onAppear {
                withAnimation(.spring(response: 0.6, dampingFraction: 0.5)) {
                    offset = 0
                    scale = 1.0
                }
            }
    }
}

struct WigglingIconView: View {
    @State private var angle: Double = 0
    
    var body: some View {
        CaseraIconView()
            .rotationEffect(.degrees(angle))
            .onAppear {
                withAnimation(.easeInOut(duration: 0.1).repeatForever(autoreverses: true)) {
                    angle = 5
                }
            }
    }
}

// MARK: - Playground UI

struct PlaygroundContentView: View {
    @State private var selectedAnimation = 0
    @State private var animationKey = UUID()
    
    let animations = ["Full Intro", "Pulsating", "Pulse", "Bounce", "Wiggle"]
    
    var body: some View {
        VStack(spacing: 20) {
            Text("MyCrib Icon Animations")
                .font(.title)
                .fontWeight(.bold)
            
            ZStack {
                RoundedRectangle(cornerRadius: 20)
                    .fill(Color(.systemGray6))
                    .frame(height: 250)
                
                currentAnimation
                    .frame(width: 150, height: 150)
                    .id(animationKey)
            }
            .padding(.horizontal)
            
            ScrollView(.horizontal, showsIndicators: false) {
                HStack(spacing: 10) {
                    ForEach(0..<animations.count, id: \.self) { index in
                        Button {
                            selectedAnimation = index
                            animationKey = UUID()
                        } label: {
                            Text(animations[index])
                                .font(.caption)
                                .fontWeight(selectedAnimation == index ? .bold : .regular)
                                .padding(.horizontal, 12)
                                .padding(.vertical, 8)
                                .background(
                                    Capsule().fill(selectedAnimation == index ? Color.orange : Color(.systemGray5))
                                )
                                .foregroundColor(selectedAnimation == index ? .white : .primary)
                        }
                        .buttonStyle(.plain)
                    }
                }
                .padding(.horizontal)
            }
            
            Button("Replay") { animationKey = UUID() }
                .buttonStyle(.borderedProminent)
                .tint(.orange)
            
            Spacer()
        }
        .padding(.top, 30)
        .frame(width: 450, height: 500)
        .background(Color(.systemBackground))
    }
    
    @ViewBuilder
    var currentAnimation: some View {
        switch selectedAnimation {
        case 0: FullIntroAnimationView()
        case 1: PulsatingCheckmarkView()
        case 2: PulsingIconView()
        case 3: BouncyIconView()
        case 4: WigglingIconView()
        default: CaseraIconView()
        }
    }
}