import SwiftUI
import WmapParser

struct MapPreviewView: View {
  let parsedMap: WmapParser.Map
  @State private var selectedEvolution: StageType = .general

  var body: some View {
    GeometryReader { geometry in
      let mapSize = Dimensions.Map.size
      let padding = Dimensions.Map.padding
      let totalWidth = mapSize.width + 2 * padding
      let totalHeight = mapSize.height + 2 * padding

      // Calculate scale to fit the available space
      let scaleX = geometry.size.width / totalWidth
      let scaleY = geometry.size.height / totalHeight
      let scale = min(scaleX, scaleY, 1.0)  // Don't scale up, only down

      ScrollView([.horizontal, .vertical]) {
        MapRenderView(
          parsedMap: parsedMap,
          evolution: $selectedEvolution
        )
        .drawingGroup(opaque: false)
        .scaleEffect(scale)
        .frame(
          width: totalWidth * scale,
          height: totalHeight * scale
        )
      }
      .frame(maxWidth: .infinity, maxHeight: .infinity)
      .background(Color.white)
    }
  }
}

#Preview {
  let parsedMap = WmapParser.parse("Hello (20, 20)")
  MapPreviewView(parsedMap: parsedMap)
}