(function(){

	var vec2, Rect, Room, sort, UidGenerator, _
	if ('window' in this) {
		vec2 = window.vec2
		Rect = window.Rect
		Room = window.Room
		sort = window.sort
		UidGenerator = window.UidGenerator
		_ = window._
	}
	else {
		vec2 = require('../../models/vec2')
		Rect = require('../../models/rect')
		Room = require('../../models/room')
		UidGenerator = require('../../util/uid')
		sort = require('../../util/sort')
		_ = require('lodash')
		FRONT = 0x1, BACK = 0x2, LEFT = 0x4, RIGHT = 0x8, FLOOR = 0x10, CEILING = 0x20
		TOP = CEILING, BOTTOM = FLOOR
		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
		}
	}

	var Walls = new function(){

		var base = this
		
		base.list = []
		base.floors = []
		base.lookup = {}
		base.colors = {}
		
		base.init = function(){
      base.colors = base.copyColors( app.defaults.colors )
    }
    
    base.copyColors = function(colors){
      var copy = {
        wall: colors.wall.slice(),
        outline: colors.outline.slice(),
        floor: colors.floor.slice(),
        ceiling: colors.ceiling.slice(),
      }
      return copy
    }

		base.first = function(){
		  for (var i in base.list) {
		    if (base.list.hasOwnProperty(i)) { 
          return base.list[i]
		    }
		  }
		}
		
		base.find = function(id){
		  return base.lookup[id]
		}
		
		base.assign = function(list){
		  base.list = list
		  base.lookup = {}
		  list.forEach(function(wall){
		    base.lookup[wall.id] = wall
		  })
		}

		base.assignFloors = function(floors){
		  base.floors = floors
		  floors.forEach(function(floor){
		    base.lookup[floor.id] = floor
		  })
		}
		
		base.bind = function(){
			base.list.forEach(function(wall){
				wall.bind()
			})
			base.floors.forEach(function(floor){
			  floor.bind()
			})
		}

		base.count = function(){
			return this.list.length
		}
	
		base.forEach = function(f){
			return base.values().forEach(f)
		}
	
		base.map = function(f){
			return base.values().map(f)
		}
	
		base.values = function(){
			return _.values(base.lookup)
		}

		base.serialize = function(){
		  var data = []
			base.forEach(function(wall){
			  data.push(wall.serialize())
			})
			return data
		}
	
		base.deserialize = function(walls_data){
			walls_data.forEach(function(wall_data){
			  if (! wall_data) { return }
			  var wall = base.lookup[ wall_data.id ]
			  if (! wall) {
			    return
			  }
			  wall.deserialize( wall_data )
			})
    },
		
		base.paint = function(){
      var wallColor = rgba_string(Walls.colors.wall, app.defaults.wallOpacity)
      var outlineColor = rgb_string(Walls.colors.outline)
      var floorColor = rgb_string(Walls.colors.floor)
      var ceilingColor = rgb_string(Walls.colors.ceiling)
      Walls.list.forEach(function(wall){
        wall.outline(wallColor, outlineColor)
      })
      Walls.floors.forEach(function(floor){
        if (floor.ceiling) floor.color(ceilingColor)
        else floor.color(floorColor)
      })
		}
		
		base.luminance = function(rgb){
			rgb = rgb || Walls.colors.ceiling
			var rgb_max = Math.max.apply(0, rgb)
			var rgb_min = Math.min.apply(255, rgb)
			return (rgb_max + rgb_min ) / 2
		}
    
    base.setBodyColor = function(){
  		$("#header").toggleClass("black", Walls.luminance() < 100)
			$("body").css("background-color", rgb_string( Walls.colors.wall ))
		}
		base.clearBodyColor = function(){
			$("#header").removeClass("black")
			$("body").css("background-color", "transparent")
		}
		
		base.setWallpaper = {
			wall: function(background){
				var img = new Image ()
				img.onload = function(){
					Walls.list.forEach(function(wall){
						wall.wallpaper(background, img)
					})
				}.bind(this)
				img.src = background.src.replace("url(","").replace(")","")
				img.complete && img.onload()
			},
			floor: function(background){
				Walls.floors.forEach(function(floor){
					if (floor.ceiling) return
					floor.wallpaper(background)
				})
			},
			ceiling: function(background){
				Walls.floors.forEach(function(floor){
					if (! floor.ceiling) return
					floor.wallpaper(background)
				})
			},
		}
		
		base.clearWallpaper = {
			wall: function(){
				Walls.list.forEach(function(wall){
					wall.wallpaper("none")
				})
			},
			outline: function(){
			},
			floor: function(){
				Walls.floors.forEach(function(floor){
					if (floor.ceiling) return
					floor.wallpaper("none")
				})
			},
			ceiling: function(){
				Walls.floors.forEach(function(floor){
					if (! floor.ceiling) return
					floor.wallpaper("none")
				})
			},
		}
		
    base.setColor = {
    
      wall: function(rgb){
        var rgbaColor = rgba_string(rgb, app.defaults.wallOpacity)
        var rgbColor = rgb_string(rgb)
        				
				if (Rooms.mover.room) {
					$("#header").toggleClass("black", base.luminance() < 100)
					$("body").css("background-color", rgbColor)
				}
        
        Walls.colors.wall = rgb
        Walls.list.forEach(function(wall){
          wall.outline(rgbaColor, null)
        })
      },

      outline: function(rgb){
        var rgbColor = rgb_string(rgb)
        Walls.colors.outline = rgb
        Walls.list.forEach(function(wall){
          wall.outline(null, rgbColor)
        })
      },
    
      floor: function(rgb){
        var rgbColor = rgb_string(rgb)
        Walls.colors.floor = rgb
				Walls.floors.forEach(function(floor){
					if (floor.ceiling) return
          floor.color(rgbColor)
        })
      },

      ceiling: function(rgb){
        var rgbColor = rgb_string(rgb)
        Walls.colors.ceiling = rgb
				Walls.floors.forEach(function(floor){
					if (! floor.ceiling) return
          floor.color(rgbColor)
        })
      },
    }
  }

	if ('window' in this) {
		window.Walls = Walls
	}
	else {
		module.exports = Walls
	}
})()