import AppKit
import ConjureKit
import Testing
@testable import Conjure

@Test @MainActor func numberedMarkersShareTheBodyTextBaseline() throws {
    _ = NSApplication.shared
    let editor = NotesTextView(frame: NSRect(x: 0, y: 0, width: 400, height: 200))
    editor.drawsBackground = false
    let window = NSWindow(contentRect: editor.frame, styleMask: .borderless, backing: .buffered, defer: false)
    window.contentView = editor
    defer { window.orderOut(nil) }
    for source in ["1. 1", "123. 123", "  12. 12"] {
        editor.setDocumentContents(NoteDocument.importMarkdown(NSAttributedString(string: source)))
        let layout = try #require(editor.layoutManager)
        let container = try #require(editor.textContainer)
        layout.ensureLayout(for: container)
        let glyph = layout.glyphIndexForCharacter(at: 0)
        let fragment = layout.lineFragmentRect(forGlyphAt: glyph, effectiveRange: nil)
        let bodyX = editor.textContainerOrigin.x + fragment.minX + layout.location(forGlyphAt: glyph).x
        let bitmap = try #require(NSBitmapImageRep(bitmapDataPlanes: nil, pixelsWide: 400, pixelsHigh: 200,
            bitsPerSample: 8, samplesPerPixel: 4, hasAlpha: true, isPlanar: false,
            colorSpaceName: .deviceRGB, bytesPerRow: 0, bitsPerPixel: 0))
        let bitmapContext = try #require(NSGraphicsContext(bitmapImageRep: bitmap))
        bitmapContext.cgContext.translateBy(x: 0, y: 200)
        bitmapContext.cgContext.scaleBy(x: 1, y: -1)
        let context = NSGraphicsContext(cgContext: bitmapContext.cgContext, flipped: true)
        NSGraphicsContext.saveGraphicsState()
        NSGraphicsContext.current = context
        context.cgContext.clear(CGRect(x: 0, y: 0, width: 400, height: 200))
        editor.draw(editor.bounds)
        NSGraphicsContext.restoreGraphicsState()
        var markerBottom = -1, bodyBottom = -1
        for y in 0..<200 {
            for x in 0..<400 where (bitmap.colorAt(x: x, y: y)?.alphaComponent ?? 0) > 0.2 {
                if CGFloat(x) < bodyX - 1 { markerBottom = y }
                else { bodyBottom = y }
            }
        }
        try #require(markerBottom >= 0 && bodyBottom >= 0)
        #expect(abs(markerBottom - bodyBottom) <= 1, "Marker/body ink baseline for \(source)")
        #expect(!editor.string.contains("\u{fffc}"))
    }
}