/*
 Copyright (C) 2024 Rubén Beltrán del Río

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see https://map.tranquil.systems.
 */
import ConcaveHull
import SwiftUI

struct MapGroups: View {

  let mapSize: CGSize
  let vertexSize: CGSize
  let groups: [[Vertex]]

  var body: some View {
    ForEach(Array(groups.enumerated()), id: \.element) { index, group in
      MapGroup(mapSize: mapSize, vertexSize: vertexSize, group: group, color: color(index))
    }
  }

  private func color(_ index: Int) -> Color {
    return .map.groupColors[index % Color.map.groupColors.count]
  }
}

#Preview {
  MapGroups(
    mapSize: CGSize(width: 400.0, height: 400.0), vertexSize: CGSize(width: 25.0, height: 25.0),
    groups: [
      [
        Vertex(id: 0, label: "A Circle", position: CGPoint(x: 50.0, y: 50.0)),
        Vertex(id: 1, label: "A Square", position: CGPoint(x: 10.0, y: 20.0), shape: .square),
        Vertex(id: 2, label: "A triangle", position: CGPoint(x: 25, y: 32.0), shape: .triangle),
        Vertex(id: 3, label: "An X", position: CGPoint(x: 70.0, y: 70.0), shape: .x),
      ]
    ])
}