MovieCatalog

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//
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//  FormItemBackground.swift
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//  Movies
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//
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//  Created by Ivan Semenov on 27.10.2023.
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//
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import SwiftUI
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struct FormItemBackgroundViewModifier: ViewModifier {
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    enum Style {
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        case `default`
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        case error
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        var tintColor: Color {
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            switch self {
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            case .default: .appAccent
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            case .error: .appLightGray
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            }
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        }
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        var borderColor: Color {
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            switch self {
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            case .default: .appGray
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            case .error: .red
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            }
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        }
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        var backgroundColor: Color {
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            switch self {
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            case .default:
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                return .clear
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            case .error:
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                return .red.opacity(Constants.errorOpacity)
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            }
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        }
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    }
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    let style: Style
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    func body(content: Content) -> some View {
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        content
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            .tintColor(style.tintColor)
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            .background(background)
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    }
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    private enum Constants {
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        static let cornerRadius: CGFloat = 10
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        static let errorOpacity: CGFloat = 0.1
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    }
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    @ViewBuilder
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    private var background: some View {
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        let rectangle = RoundedRectangle(cornerRadius: Constants.cornerRadius)
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        rectangle
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            .stroke(style.borderColor)
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            .background(rectangle.fill(style.backgroundColor))
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    }
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}
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extension View {
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    func formItemBackground(_ style: FormItemBackgroundViewModifier.Style = .default) -> some View {
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        modifier(FormItemBackgroundViewModifier(style: style))
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    }
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}
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