Tests.swift

import XCTest
import SwiftUI
import AttributedStringBuilder

struct BackgroundGradient: View {
    @Environment(\.highlightColor) var highlightColor

    var body: some View {
        RoundedRectangle(cornerRadius: 2)
            .fill(LinearGradient(colors: [.green, highlightColor], startPoint: .topLeading, endPoint: .bottomTrailing))
    }
}

@AttributedStringBuilder @MainActor
var example: some AttributedStringConvertible {
    Markdown("""
    1. This is a nested list.
        1. Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. 
        1. Two
        1. Three
    1. And the second item
    """)
    Markdown("Hello *\("test".textColor(.systemRed)) world*")
    Group {
        "Hello, World!"
            .bold()
            .modify { $0.backgroundColor = .yellow }
        Footnote {
            Markdown("""
        Here's the *contents* of a footnote.
        """)
        }
        ". "
        let someMore = "Some more text"
            .background {
                BackgroundGradient()
            }
        someMore
        someMore
            .transformSwiftUIEnvironment { $0.highlightColor = .red }

    }.joined(separator: "")
    let gradient = Embed {
        BackgroundGradient()
            .frame(width: 50, height: 50)
    }
    Group {
        gradient; gradient.transformSwiftUIEnvironment { $0.highlightColor = .red }
    }.joined(separator: " ")
    Array(repeating:
    """
    This is some markdown with **strong** `code` text. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas tempus, tortor eu maximus gravida, ante diam fermentum magna, in gravida ex tellus ac purus.

    - One
    - Two
    - Three
      - Four
      - Five

    ```
    some code
    ```

    And a number list:

    1. One
    1. Two
    1. Three
    
    Checklist:
    
    - [ ] Unchecked item
    - [x] Checked item

    Another *paragraph*.

    > A blockquote.
    """.markdown() as any AttributedStringConvertible, count: 2)
    Table(rows: [
        .init(cells: [
            .init(borderColor: .green, borderWidth: .init(right: 2), contents: "Table Testing"),
            .init(contents: Embed {
                        Circle().fill(LinearGradient(colors: [.blue, .red], startPoint: .top, endPoint: .bottom))
                    .frame(width: 100, height: 100)
                } )
        ])
    ])
    .modify { $0.size = 10 }

    String(UnicodeScalar(12)) // pagebreak

    Table(rows: [
        .init(cells: [
            .init(contents: "Here is the first cell\nwith a newline"),
            .init(contents: "And the second cell"),
        ]),
        .init(cells: [
            .init(contents: "Third"),
            .init(contents: "And fourth"),
        ])
    ])
    
//    NSImage(systemSymbolName: "hand.wave", accessibilityDescription: nil)!
    Embed {
        HStack {
            Image(systemName: "hand.wave")
                .font(.largeTitle)
            Text("Hello from SwiftUI")
            Color.red.frame(width: 100, height: 50)
        }
    }
}

let sampleAttributes = Attributes(family: "Georgia", size: 16, textColor: .black, paragraphSpacing: 10)

struct HighlightColor: SwiftUI.EnvironmentKey {
    static let defaultValue: Color = Color.blue
}

extension SwiftUI.EnvironmentValues {
    var highlightColor: Color {
        get { self[HighlightColor.self] }
        set { self[HighlightColor.self] = newValue }
    }
}


class Tests: XCTestCase {
    @MainActor
    func testPDF() {
        var context = Context(environment: .init(attributes: sampleAttributes))
        let data = example
            .joined(separator: "\n")
            .run(context: &context)
            .fancyPDF()
            .data
        try! data.write(to: .desktopDirectory.appending(component: "out.pdf"))

    }
}