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 FRONT = 0x1, BACK = 0x2, LEFT = 0x4, RIGHT = 0x8, FLOOR = 0x10, CEILING = 0x20
var ALL = FRONT | BACK | LEFT | RIGHT

describe('rect', function(){
  describe('#intersects()', function(){
		var rect = new Rect(0, 0, 10, 10)

    it('intersects itself', function(){
      assert.equal(true, rect.intersects( new Rect(0, 0, 10, 10) ));
    })
    it('intersects more wide', function(){
      assert.equal(true, rect.intersects( new Rect(0, 0, 5, 10) ));
    })
    it('intersects less wide', function(){
      assert.equal(true, rect.intersects( new Rect(0, 0, 15, 10) ));
    })
    it('intersects more tall', function(){
      assert.equal(true, rect.intersects( new Rect(0, 0, 10, 5) ));
    })
    it('intersects less tall', function(){
      assert.equal(true, rect.intersects( new Rect(0, 0, 10, 15) ));
    })
    it('intersects if right-adjacent', function(){
      assert.equal(true, rect.intersects( new Rect(10, 0, 20, 10) ));
    })
    it('intersects if bottom-adjacent', function(){
      assert.equal(true, rect.intersects( new Rect(0, 10, 10, 20) ));
    })
    it('does not intersect if to the right', function(){
      assert.equal(false, rect.intersects( new Rect(20, 0, 40, 10) ));
    })
    it('does not intersect if beneath', function(){
      assert.equal(false, rect.intersects( new Rect(0, 20, 10, 40) ));
    })
  /*
    it('does not intersect if corners intersect', function(){
      assert.equal(false, rect.intersects( new Rect(10, 10, 20, 20) ));
    })
  */

  })

	var rect       = new Rect( new vec(1,4), new vec(1,4) )

	var east_in    = new Rect( new vec(2,3), new vec(1,4) )
	var east_edge  = new Rect( new vec(2,4), new vec(1,4) )
	var east       = new Rect( new vec(2,5), new vec(1,4) )

	var south_in   = new Rect( new vec(1,4), new vec(2,3) )
	var south_edge = new Rect( new vec(1,4), new vec(2,4) )
	var south      = new Rect( new vec(1,4), new vec(2,5) )

	var corner     = new Rect( new vec(3,5), new vec(3,5) )

  function sides (s) {
    return s.reduce(function(prev, curr){
      return prev | curr.sides
    }, 0)
  }
  /*
    console.log(s0.map(function(r){ return r.toString() }))
    console.log(s1.map(function(r){ return r.toString() }))
  */

  describe('#split(rect, east)', function(){
    var s0 = rect.split(east)
    var s1 = east.split(rect)

    it('splits on all 4 sides', function(){
      assert.equal(ALL, sides(s0) | sides(s1))
    })
    it('rect is front/back/left', function(){
      assert.equal(FRONT | BACK | LEFT, sides(s0))
    })
    it('east is front/back/right', function(){
      assert.equal(FRONT | BACK | RIGHT, sides(s1))
    })
  })

  describe('#split(rect, east_in)', function(){
    var s0 = rect.split(east_in)
    var s1 = east_in.split(rect)
    it('splits on all 4 sides', function(){
      assert.equal(ALL, sides(s0) | sides(s1))
    })
    it('rect is has all sides', function(){
      assert.equal(ALL, sides(s0))
    })
    it('east_in only has front/back', function(){
      assert.equal(FRONT | BACK, sides(s1))
    })
  })

  describe('#split(rect, east_edge)', function(){
    var s0 = rect.split(east_edge)
    var s1 = east_edge.split(rect)

    it('has no degenerate vectors', function(){
      s0.forEach(function(r){
        assert.notEqual(0, r.x.magnitude())
        assert.notEqual(0, r.y.magnitude())
      })
      s1.forEach(function(r){
        assert.notEqual(0, r.x.magnitude())
        assert.notEqual(0, r.y.magnitude())
      })
    })
    it('splits on all 4 sides', function(){
      assert.equal(ALL, sides(s0) | sides(s1))
    })
    it('rect is front/back/left', function(){
      assert.equal(ALL, sides(s0))
    })
    it('east is front/back/right', function(){
      assert.equal(FRONT | BACK | RIGHT, sides(s1))
    })
  })

  describe('#split(rect, south)', function(){
    var s0 = rect.split(south)
    var s1 = south.split(rect)

    it('splits on all 4 sides', function(){
      assert.equal(ALL, sides(s0) | sides(s1))
    })
    it('rect is front/left/right', function(){
      assert.equal(FRONT | LEFT | RIGHT, sides(s0))
    })
    it('south is back/left/right', function(){
      assert.equal(BACK | LEFT | RIGHT, sides(s1))
    })
  })

  describe('#split(rect, south_in)', function(){
    var s0 = rect.split(south_in)
    var s1 = south_in.split(rect)
    it('splits on all 4 sides', function(){
      assert.equal(ALL, sides(s0) | sides(s1))
    })
    it('rect is has all sides', function(){
      assert.equal(ALL, sides(s0))
    })
    it('south_in only has left/right', function(){
      assert.equal(LEFT | RIGHT, sides(s1))
    })
  })

  describe('#split(rect, south_edge)', function(){
    var s0 = rect.split(south_edge)
    var s1 = south_edge.split(rect)

    it('has no degenerate vectors', function(){
      s0.forEach(function(r){
        assert.notEqual(0, r.x.magnitude())
        assert.notEqual(0, r.y.magnitude())
      })
      s1.forEach(function(r){
        assert.notEqual(0, r.x.magnitude())
        assert.notEqual(0, r.y.magnitude())
      })
    })
    it('splits on all 4 sides', function(){
      assert.equal(ALL, sides(s0) | sides(s1))
    })
    it('rect has all sides', function(){
      assert.equal(ALL, sides(s0))
    })
    it('south is back/left/right', function(){
      assert.equal(BACK | LEFT | RIGHT, sides(s1))
    })
  })

  describe('#split(rect, corner)', function(){
    var s0 = rect.split(corner)
    var s1 = corner.split(rect)

    it('rect splits on all 4 sides', function(){
      assert.equal(ALL, sides(s0))
    })
    it('corner splits on all 4 sides', function(){
      assert.equal(ALL, sides(s1))
    })

    var rect_map = {}
    var corner_map = {}
    var rect_state = s0.forEach(function(r){
      rect_map[r.sides] = rect_map[r.sides] || []
      rect_map[r.sides].push(r)
    })
    var corner_state = s1.forEach(function(r){
      corner_map[r.sides] = corner_map[r.sides] || []
      corner_map[r.sides].push(r)
    })

    it('rect contains a rect with no sides', function(){
      assert.equal(1, rect_map[0].length)
    })
    it('corner contains a rect with no sides', function(){
      assert.equal(1, corner_map[0].length)
    })
    it('rect and corner overlap', function(){
      assert.equal(String(rect_map[0][0]), String(corner_map[0][0]))
    })

  })

})