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

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") )
}

describe('clipper', function(){
  Rooms.list = {}
  Rooms.regions = []
  Rooms.add_with_rect( rect )
  Rooms.add_with_rect( east )

  describe('#clip_rects(rect, east)', function(){
    Rooms.clipper.reset_rects()
    var regions = Rooms.clipper.clip_rects()

    it('contains duplicates', function(){
      var map = {}
      var state = regions.some(function(a){
        var s = a.toString()
        if (s in map) return true
        map[s] = s
        return false
      })
      assert.equal(true, state)
    })
  })

  describe('#cull_rects(rect, east)', function(){
    Rooms.clipper.reset_rects()
    var regions = Rooms.clipper.clip_rects()
    var culled = Rooms.clipper.cull_rects_iterative()
    var culled_dupes = regions.filter(function(r){ return r.dupe })

    it('clipper returns 4 rects', function(){
      assert.equal(4, regions.length)
    })
    it('culling marks 1 duplicate', function(){
      assert.equal(1, culled_dupes.length)
    })
    it('culling returns 3 non-duplicate', function(){
      assert.equal(3, culled.length)
    })
  })

  //

  Rooms.list = {}
  Rooms.regions = []
  Rooms.add_with_rect( rect )
  Rooms.add_with_rect( corner )

  describe('#cull_rects(rect, corner)', function(){
    Rooms.clipper.reset_rects()
    var regions = Rooms.clipper.clip_rects()
    var culled = Rooms.clipper.cull_rects_iterative()
    var culled_dupes = regions.filter(function(r){ return r.dupe })

    it('clipper returns 8 rects', function(){
      assert.equal(8, regions.length)
    })
    it('culling marks 1 duplicate', function(){
      assert.equal(1, culled_dupes.length)
    })
    it('culling returns 7 non-duplicate', function(){
      assert.equal(7, culled.length)
    })
  })

  //

  Rooms.list = {}
  Rooms.regions = []
  Rooms.add_with_rect( rect )
  Rooms.add_with_rect( corner )
  Rooms.add_with_rect( peninsula )

/*
  // this method uses a tree to match areas, which tends to leave extra overlapping regions
  describe('#cull_rects(rect, corner, peninsula)', function(){
    Rooms.clipper.reset_rects()
    var regions = Rooms.clipper.clip_rects()
    var culled = Rooms.clipper.cull_rects()
    var culled_dupes = regions.filter(function(r){ return r.dupe })

    it('clipper returns 16 rects', function(){
      assert.equal(16, regions.length)
    })
    it('culling marks 3 duplicate', function(){
      assert.equal(3, culled_dupes.length)
    })
    it('culling returns 13 non-duplicate', function(){
      assert.equal(13, regions.length)
    })
  })
*/

  // this method iterates to match areas, which omits regions in some cases
  describe('#cull_rects_iterative(rect, corner, peninsula)', function(){
    Rooms.clipper.reset_rects()
    var regions = Rooms.clipper.clip_rects()
    var culled = Rooms.clipper.cull_rects_iterative()
    var culled_dupes = regions.filter(function(r){ return r.dupe })

    it('clipper returns 16 rects', function(){
      assert.equal(16, regions.length)
    })
    it('culling marks 3 duplicate', function(){
      assert.equal(3, culled_dupes.length)
    })
    it('culling returns 14 non-duplicate', function(){
      assert.equal(13, culled.length)
    })
  })

})