var assert = require("assert")
var vec = require("../public/assets/javascripts/rectangles/models/vec2.js")
var Rect = require("../public/assets/javascripts/rectangles/models/rect.js")
var Room = require("../public/assets/javascripts/rectangles/models/room.js")
var Rooms = require("../public/assets/javascripts/rectangles/engine/rooms/_rooms.js")
var Clipper = require("../public/assets/javascripts/rectangles/engine/rooms/clipper.js")
var Builder = require("../public/assets/javascripts/rectangles/engine/rooms/builder.js")
var FRONT = 0x1, BACK = 0x2, LEFT = 0x4, RIGHT = 0x8, FLOOR = 0x10, CEILING = 0x20
var ALL = FRONT | BACK | LEFT | RIGHT
function sidesToString(sides){
  var s = ""
  if (sides & FRONT) s += "front "
  if (sides & BACK)  s += "back "
  if (sides & LEFT)  s += "left "
  if (sides & RIGHT) s += "right "
  if (sides & TOP)  s += "top "
  if (sides & BOTTOM) s += "bottom "
  return s
}
function bitcount(v) {
  v = v - ((v >>> 1) & 0x55555555);
  v = (v & 0x33333333) + ((v >>> 2) & 0x33333333);
  return ((v + (v >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
}

var rect      = new Rect( new vec(1,5), new vec(1,5) )
var east      = new Rect( new vec(2,6), new vec(1,5) )
var corner    = new Rect( new vec(3,7), new vec(3,7) )
var peninsula = new Rect( new vec(4,6), new vec(6,8) )

function report(a) {
  console.log( a.join("\n") )
}
function reportSides(walls) {
  console.log(walls.map(function(w){ return sidesToString(w.side) }).join("\n"))
}
function reset(){
  Rooms.list = {}
  Rooms.regions = []
}
function rebuild(){
  Rooms.clipper.reset_rects()
  var regions = Rooms.clipper.clip_rects()
  var culled = Rooms.clipper.cull_rects_iterative()
  return culled
}

describe('builder', function(){

  reset()
  var rect_room = Rooms.add_with_rect( rect )
  rebuild()

  describe('#build_walls(rect)', function(){
    var walls = Rooms.builder.build_walls(rect_room.regions[0])

    it("should return 4 walls", function(){
      assert.equal(4, walls.length)
    })
    it("should have one side per wall", function(){
      assert.equal(1, bitcount(walls[0].side))
      assert.equal(1, bitcount(walls[1].side))
      assert.equal(1, bitcount(walls[2].side))
      assert.equal(1, bitcount(walls[3].side))
    })
  })

  describe('#build_floors(rect)', function(){
    var floors = Rooms.builder.build_floors(rect_room)
    it("should make 2 floors", function(){
      assert.equal(2, floors.length)
    })
  })

  //

  reset()
  var rect_room = Rooms.add_with_rect( rect )
  var rect_east = Rooms.add_with_rect( east )
  var regions = rebuild()

console.log("\n\n")
console.log(regions.join("\n"))
console.log("\n\n")

  describe('#build_walls(rect, east)', function(){

    var walls = regions.map(Rooms.builder.build_walls.bind(Rooms.builder))
    walls.map(function(w){ reportSides(w); console.log("--") })

    it("should return 3 walls", function(){
      assert.equal(4, walls.length)
    })
    it("should have one side per wall", function(){
      assert.equal(1, bitcount(walls[0].side))
      assert.equal(1, bitcount(walls[1].side))
      assert.equal(1, bitcount(walls[2].side))
      assert.equal(1, bitcount(walls[3].side))
    })
  })

  describe('#build_floors(rect, east)', function(){
    var floors = Rooms.builder.build_floors(rect_room)
    it("should make 2 floors", function(){
      assert.equal(2, floors.length)
    })
    // reportSides(floors)
  })





  // Rooms.add_with_rect( corner )
  // Rooms.add_with_rect( peninsula )

})