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 Grouper = require("../public/assets/javascripts/rectangles/engine/rooms/grouper.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) )

var big_rect  = new Rect( new vec(1,5), new vec(1,5) )
var hall_rect = new Rect( new vec(3,4), new vec(4,8) )

var rect_room         = new Room({ id: "rect", rect: rect, height: 2 })
var east_room         = new Room({ id: "east", rect: east, height: 2 })
var corner_room       = new Room({ id: "corner", rect: corner, height: 2 })
var peninsula_room    = new Room({ id: "peninsula", rect: peninsula, height: 2 })
var peninsula_taller  = new Room({ id: "peninsula", rect: peninsula, height: 3 })
var peninsula_shorter = new Room({ id: "peninsula", rect: peninsula, height: 1 })

var taller_room = new Room({ id: "taller", rect: rect, height: 3 })

var big_room = new Room({ id: "big_room", rect: big_rect, height: 4 })
var hallway  = new Room({ id: "hallway", rect: hall_rect, height: 2 })

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.forEach(function(room){
    room.reset()
  })
  Rooms.list = {}
  Rooms.regions = []
}
function rebuild(){
  Rooms.clipper.solve_rects()
  Rooms.builder.build()
}

describe('grouper(rect)', function(){
  reset()
  Rooms.add( rect_room )
  rebuild()

  var collections = Rooms.grouper.collect()

  describe('#collect(rect)', function(){
    it("should return 4 sets of 1 wall each", function(){
      assert.equal(1, collections[FRONT].length)
      assert.equal(1, collections[BACK].length)
      assert.equal(1, collections[LEFT].length)
      assert.equal(1, collections[RIGHT].length)
    })
  })
})

describe('grouper(rect,east)', function(){
  reset()
  Rooms.add( rect_room )
  Rooms.add( east_room )
  rebuild()

  var collections = Rooms.grouper.collect()

  describe('#collect(rect, east)', function(){
    it("should find 3 walls on front/back, 1 wall on left/right", function(){
      assert.equal(3, collections[FRONT].length)
      assert.equal(3, collections[BACK].length)
      assert.equal(1, collections[LEFT].length)
      assert.equal(1, collections[RIGHT].length)
    })
  })

  describe('#group(rect, east)', function(){
    var front_walls = Rooms.grouper.group([], collections, FRONT)
    var back_walls = Rooms.grouper.group([], collections, BACK)
    var left_walls = Rooms.grouper.group([], collections, LEFT)
    var right_walls = Rooms.grouper.group([], collections, RIGHT)

    it("each side now has one wall", function(){
      assert.equal(1, left_walls.length)
      assert.equal(1, right_walls.length)
      assert.equal(1, front_walls.length)
      assert.equal(1, back_walls.length)
    })
    it("front wall is now 5 units long, contains 3 mx elements", function(){
      var wall = front_walls[0]
      assert.equal(5, wall.vec.length())
      assert.equal(3, wall.mx.length)
    })
    it("back wall is also 5 units long, contains 3 mx elements", function(){
      var wall = back_walls[0]
      assert.equal(5, wall.vec.length())
      assert.equal(3, wall.mx.length)
    })
    it("left wall is still 4 units long, contains 1 mx element", function(){
      var wall = left_walls[0]
      assert.equal(4, wall.vec.length())
      assert.equal(1, wall.mx.length)
    })
  })
})

describe('grouper(rect,corner)', function(){
  reset()
  Rooms.add( rect_room )
  Rooms.add( corner_room )
  rebuild()

  var collections = Rooms.grouper.collect()

  describe('#group(rect,corner)', function(){
    var front_walls = Rooms.grouper.group([], collections, FRONT)
    var back_walls = Rooms.grouper.group([], collections, BACK)
    var left_walls = Rooms.grouper.group([], collections, LEFT)
    var right_walls = Rooms.grouper.group([], collections, RIGHT)

    it("left has 2 walls", function(){
      assert.equal(2, left_walls.length)
    })
    it("right has 2 walls", function(){
      assert.equal(2, right_walls.length)
    })
    it("front has 2 walls", function(){
      assert.equal(2, front_walls.length)
    })
    it("back has 2 walls", function(){
      assert.equal(2, back_walls.length)
    })
    it("front/right walls are one narrow, one wide", function(){
      assert.equal(4, front_walls[0].vec.length())
      assert.equal(2, front_walls[1].vec.length())
      assert.equal(2, right_walls[0].vec.length())
      assert.equal(4, right_walls[1].vec.length())
    })
    it("back/left walls are one wide, one narrow", function(){
      assert.equal(2, back_walls[0].vec.length())
      assert.equal(4, back_walls[1].vec.length())
      assert.equal(4, left_walls[0].vec.length())
      assert.equal(2, left_walls[1].vec.length())
    })
  })
})

describe('grouper(rect,corner,peninsula)', function(){
  reset()
  Rooms.add( rect_room )
  Rooms.add( corner_room )
  Rooms.add( peninsula_room )
  rebuild()

  var collections = Rooms.grouper.collect()

  describe('#collect(rect,corner,peninsula)', function(){
    it("should find an appropriate number of wall segments", function(){
      assert.equal(3, collections[FRONT].length)
      assert.equal(4, collections[BACK].length)
      assert.equal(5, collections[LEFT].length)
      assert.equal(5, collections[RIGHT].length)
    })
  })

  describe('#group(rect,corner,peninsula)', function(){
    var front_walls = Rooms.grouper.group([], collections, FRONT)
    var back_walls = Rooms.grouper.group([], collections, BACK)
    var left_walls = Rooms.grouper.group([], collections, LEFT)
    var right_walls = Rooms.grouper.group([], collections, RIGHT)

    it("left has 3 walls", function(){
      assert.equal(3, left_walls.length)
    })
    it("right has 4 walls", function(){
      assert.equal(4, right_walls.length)
    })
    it("front has 2 walls", function(){
      assert.equal(2, front_walls.length)
    })
    it("back has 4 walls", function(){
      assert.equal(4, back_walls.length)
    })
  })
})


describe('grouper(rect,corner,peninsula_taller)', function(){
  reset()
  Rooms.add( rect_room )
  Rooms.add( corner_room )
  Rooms.add( peninsula_taller )
  rebuild()

  var collections = Rooms.grouper.collect()

  describe('#collect(rect,corner,peninsula_taller)', function(){
    it("should find an appropriate number of wall segments", function(){
      assert.equal(5, collections[FRONT].length)
      assert.equal(4, collections[BACK].length)
      assert.equal(6, collections[LEFT].length)
      assert.equal(6, collections[RIGHT].length)
    })
  })

  describe('#group(rect,corner,peninsula_taller)', function(){
    var front_walls = Rooms.grouper.group([], collections, FRONT)
    var back_walls = Rooms.grouper.group([], collections, BACK)
    var left_walls = Rooms.grouper.group([], collections, LEFT)
    var right_walls = Rooms.grouper.group([], collections, RIGHT)

    it("left has 4 walls", function(){
      assert.equal(4, left_walls.length)
    })
    it("right has 5 walls", function(){
      assert.equal(5, right_walls.length)
      // console.log(right_walls.map(function(m){ return m.vec + " " + m.edge + " " + m.surface +"" }))
    })
    it("front has 3 walls", function(){
      assert.equal(3, front_walls.length)
    })
    it("back has 4 walls", function(){
      assert.equal(4, back_walls.length)
    })
  })
})

describe('grouper(room,hallway)', function(){
  reset()
  Rooms.add( big_room )
  Rooms.add( hallway )
  rebuild()

  var collections = Rooms.grouper.collect()

  describe('#collect(room,hallway)', function(){
    it("should find an appropriate number of wall segments", function(){
      assert.equal(3, collections[FRONT].length)
      assert.equal(4, collections[BACK].length)
      assert.equal(3, collections[LEFT].length)
      assert.equal(3, collections[RIGHT].length)
    })
  })

  describe('#group(rect,corner,peninsula_taller)', function(){
    var front_walls = Rooms.grouper.group([], collections, FRONT)
    var back_walls = Rooms.grouper.group([], collections, BACK)
    var left_walls = Rooms.grouper.group([], collections, LEFT)
    var right_walls = Rooms.grouper.group([], collections, RIGHT)

    it("left has 2 walls", function(){
      assert.equal(2, left_walls.length)
    })
    it("right has 2 walls", function(){
      assert.equal(2, right_walls.length)
    })
    it("front has 1 wall", function(){
      assert.equal(1, front_walls.length)
    })
    it("back has 2 walls", function(){
      assert.equal(2, back_walls.length)
      // console.log(back_walls.map(function(m){ return m.vec + " " + m.edge + " " + m.surface +"" }))
    })
  })
})