1import SwiftUI
2
3import SwiftUI
4
5/// Renders a small icon to show the review state, e.g. a green circled tick
6/// for "Approved" images.
7struct ReviewStateBorder: ViewModifier {
8    let state: ReviewState?
9    let cornerRadius: CGFloat
10    
11    init(_ state: ReviewState?, _ cornerRadius: CGFloat) {
12        self.state = state
13        self.cornerRadius = cornerRadius
14    }
15    
16    func body(content: Content) -> some View {
17        content.overlay() {
18            // This technique for drawing a coloured border with rounded corners
19            // comes from an article by Simon Ng:
20            // https://www.appcoda.com/swiftui-border/
21            RoundedRectangle(cornerRadius: cornerRadius)
22                .stroke(
23                    state?.color() ?? .gray.opacity(0.7),
24                    lineWidth: state != nil ? 3.0 : 3.0 * 5.0 / 7.0
25                )
26        }
27    }
28}
29
30extension View {
31    func reviewStateBorder(for state: ReviewState?, with cornerRadius: CGFloat) -> some View {
32        modifier(ReviewStateBorder(state, cornerRadius))
33    }
34}