//
//  ViewModifiers.swift
//  SportsTime
//
//  Reusable view modifiers for consistent styling across the app.
//

import SwiftUI

// MARK: - Card Style Modifier

struct CardStyle: ViewModifier {
    @Environment(\.colorScheme) private var colorScheme

    var cornerRadius: CGFloat = Theme.CornerRadius.large
    var padding: CGFloat = Theme.Spacing.lg

    func body(content: Content) -> some View {
        content
            .padding(padding)
            .background(Theme.cardBackground(colorScheme))
            .clipShape(RoundedRectangle(cornerRadius: cornerRadius))
            .overlay {
                RoundedRectangle(cornerRadius: cornerRadius)
                    .stroke(Theme.surfaceGlow(colorScheme), lineWidth: 1)
            }
            .shadow(color: Theme.cardShadow(colorScheme), radius: 10, y: 5)
    }
}

extension View {
    func cardStyle(cornerRadius: CGFloat = Theme.CornerRadius.large, padding: CGFloat = Theme.Spacing.lg) -> some View {
        modifier(CardStyle(cornerRadius: cornerRadius, padding: padding))
    }
}

// MARK: - Glow Effect Modifier

struct GlowEffect: ViewModifier {
    var color: Color = Theme.warmOrange
    var radius: CGFloat = 8

    func body(content: Content) -> some View {
        content
            .shadow(color: color.opacity(0.5), radius: radius / 2, y: 0)
            .shadow(color: color.opacity(0.3), radius: radius, y: 0)
    }
}

extension View {
    func glowEffect(color: Color = Theme.warmOrange, radius: CGFloat = 8) -> some View {
        modifier(GlowEffect(color: color, radius: radius))
    }
}

// MARK: - Pressable Button Style

struct PressableButtonStyle: ButtonStyle {
    var scale: CGFloat = 0.96

    func makeBody(configuration: Configuration) -> some View {
        configuration.label
            .scaleEffect(configuration.isPressed ? scale : 1.0)
            .animation(Theme.Animation.spring, value: configuration.isPressed)
    }
}

extension View {
    func pressableStyle(scale: CGFloat = 0.96) -> some View {
        buttonStyle(PressableButtonStyle(scale: scale))
    }
}

// MARK: - Shimmer Effect Modifier

struct ShimmerEffect: ViewModifier {
    @State private var phase: CGFloat = 0

    func body(content: Content) -> some View {
        content
            .overlay {
                GeometryReader { geo in
                    LinearGradient(
                        colors: [
                            .clear,
                            Color.white.opacity(0.3),
                            .clear
                        ],
                        startPoint: .leading,
                        endPoint: .trailing
                    )
                    .frame(width: geo.size.width * 2)
                    .offset(x: -geo.size.width + (geo.size.width * 2 * phase))
                }
                .mask(content)
            }
            .onAppear {
                withAnimation(.linear(duration: 1.5).repeatForever(autoreverses: false)) {
                    phase = 1
                }
            }
    }
}

extension View {
    func shimmer() -> some View {
        modifier(ShimmerEffect())
    }
}

// MARK: - Staggered Animation Modifier

struct StaggeredAnimation: ViewModifier {
    var index: Int
    var delay: Double = Theme.Animation.staggerDelay
    @State private var appeared = false

    func body(content: Content) -> some View {
        content
            .opacity(appeared ? 1 : 0)
            .offset(y: appeared ? 0 : 20)
            .onAppear {
                withAnimation(Theme.Animation.spring.delay(Double(index) * delay)) {
                    appeared = true
                }
            }
    }
}

extension View {
    func staggeredAnimation(index: Int, delay: Double = Theme.Animation.staggerDelay) -> some View {
        modifier(StaggeredAnimation(index: index, delay: delay))
    }
}

// MARK: - Badge Style Modifier

struct BadgeStyle: ViewModifier {
    @Environment(\.colorScheme) private var colorScheme

    var color: Color = Theme.warmOrange
    var filled: Bool = true

    func body(content: Content) -> some View {
        content
            .font(.caption)
            .padding(.horizontal, 10)
            .padding(.vertical, 5)
            .background(filled ? color : color.opacity(0.2))
            .foregroundStyle(filled ? .white : color)
            .clipShape(Capsule())
    }
}

extension View {
    func badgeStyle(color: Color = Theme.warmOrange, filled: Bool = true) -> some View {
        modifier(BadgeStyle(color: color, filled: filled))
    }
}

// MARK: - Section Header Style

struct SectionHeaderStyle: ViewModifier {
    @Environment(\.colorScheme) private var colorScheme

    func body(content: Content) -> some View {
        content
            .font(.title2)
            .foregroundStyle(Theme.textPrimary(colorScheme))
    }
}

extension View {
    func sectionHeaderStyle() -> some View {
        modifier(SectionHeaderStyle())
    }
}

// MARK: - Themed Background Modifier

struct ThemedBackground: ViewModifier {
    @Environment(\.colorScheme) private var colorScheme

    func body(content: Content) -> some View {
        content
            .background(Theme.backgroundGradient(colorScheme))
    }
}

extension View {
    func themedBackground() -> some View {
        modifier(ThemedBackground())
    }
}

// MARK: - Sport Color Bar

struct SportColorBar: View {
    let sport: Sport

    var body: some View {
        RoundedRectangle(cornerRadius: 2)
            .fill(sport.themeColor)
            .frame(width: 4)
    }
}

// MARK: - Sport Extension for Theme Colors

extension Sport {
    var themeColor: Color {
        switch self {
        case .mlb: return Theme.mlbRed
        case .nba: return Theme.nbaOrange
        case .nhl: return Theme.nhlBlue
        case .nfl: return Theme.nflBrown
        case .mls: return Theme.mlsGreen
        case .wnba: return Theme.wnbaPurple
        case .nwsl: return Theme.nwslTeal
        }
    }
}