ModalView = require 'views/kinds/ModalView'
template = require 'templates/editor/level/modal/terrain_randomize'
CocoModel = require 'models/CocoModel'

clusters = {
  'rocks': {
    'thangs': ['Rock 1', 'Rock 2', 'Rock 3', 'Rock 4', 'Rock 5', 'Rock Cluster 1', 'Rock Cluster 2', 'Rock Cluster 3']
    'margin': 1
  }
  'trees': {
    'thangs': ['Tree 1', 'Tree 2', 'Tree 3', 'Tree 4']
    'margin': 0
    } 
  'shrubs': {
    'thangs': ['Shrub 1', 'Shrub 2', 'Shrub 3']
    'margin': 0
    } 
  'houses': {
    'thangs': ['House 1', 'House 2', 'House 3', 'House 4']
    'margin': 4
    } 
  'animals': {
    'thangs': ['Cow', 'Horse']
    'margin': 1
    } 
  'wood': {
    'thangs': ['Firewood 1', 'Firewood 2', 'Firewood 3', 'Barrel']
    'margin': 1
    } 
  'farm': {
    'thangs': ['Farm']
    'margin': 9
    } 
  'cave': {
    'thangs': ['Cave']
    'margin': 5
    } 
  'stone': {
    'thangs': ['Gargoyle', 'Rock Cluster 1', 'Rock Cluster 2', 'Rock Cluster 3']
    'margin': 1
    } 
  'grass_floor': {
    'thangs': ['Grass01', 'Grass02', 'Grass03', 'Grass04', 'Grass05']
    'margin': -1
    } 
  'dungeon_wall': {
    'thangs': ['Dungeon Wall']
    'margin': 0
    } 
  'dungeon_floor': {
    'thangs': ['Dungeon Floor']
    'margin': -1
    } 
}

presets = {
  'dungeon': {
    'type':'dungeon'
    'borders':'dungeon_wall'
    'borderNoise':0
    'borderSize':4
    'floors':'dungeon_floor'
    'decorations': {
      'cave': {
        'num':[1,1]
        'width': 20
        'height': 20
        'clusters': {
          'cave':[1,1]
          'stone':[2,4]
        }
      }
    }
  }
  'grassy': {
    'type':'grassy'
    'borders':'trees'
    'borderNoise':1
    'borderSize':0
    'floors':'grass_floor'
    'decorations': {
      'house': {
        'num':[1,2] #min-max
        'width': 15
        'height': 15
        'clusters': {
          'houses':[1,1]
          'trees':[1,2]
          'shrubs':[0,3]
          'rocks':[1,2]
        }
      }
      'farm': {
        'num':[1,1] #min-max
        'width': 25
        'height': 15
        'clusters': {
          'farm':[1,1]
          'shrubs':[2,3]
          'wood':[2,4]
          'animals':[2,3]
        }
      }
    }
  }
}

presetSizes = {
  'small': {
    'x':80
    'y':68
  }
  'large': {
    'x':160
    'y':136
  }
}

thangSizes = {
  'floorSize': {
    'x':20
    'y':17
  }
  'borderSize': {
    'x':4
    'y':4
    'thickness':3
  }
}

module.exports = class TerrainRandomizeModal extends ModalView
  id: 'terrain-randomize-modal'
  template: template
  thangs = []
  events:
    'click .choose-option': 'onRandomize'

  onRevertModel: (e) ->
    id = $(e.target).val()
    CocoModel.backedUp[id].revert()
    $(e.target).closest('tr').remove()
    @reloadOnClose = true

  onRandomize: (e) ->
    target = $(e.target)
    presetType = target.attr 'data-preset-type'
    presetSize = target.attr 'data-preset-size'
    @randomizeThangs presetType, presetSize
    Backbone.Mediator.publish('randomize:terrain-generated',
      'thangs': @thangs
    )
    @hide()

  randomizeThangs: (presetName, presetSize) ->
    preset = presets[presetName]
    presetSize = presetSizes[presetSize]
    @thangs = []
    @randomizeFloor preset, presetSize
    @randomizeBorder preset, presetSize, preset.borderNoise
    @randomizeDecorations preset, presetSize

  randomizeFloor: (preset, presetSize) ->
    for i in _.range(0, presetSize.x, thangSizes.floorSize.x)
      for j in _.range(0, presetSize.y, thangSizes.floorSize.y)
        @thangs.push {
          'id': @getRandomThang(clusters[preset.floors].thangs)
          'pos': {
            'x': i + thangSizes.floorSize.x/2
            'y': j + thangSizes.floorSize.y/2
          }
          'margin': clusters[preset.floors].margin
        }

  randomizeBorder: (preset, presetSize, noiseFactor=1) ->
    for i in _.range(0, presetSize.x, thangSizes.borderSize.x)
      for j in _.range(thangSizes.borderSize.thickness)
        while not @addThang {
          'id': @getRandomThang(clusters[preset.borders].thangs)
          'pos': {
            'x': i + preset.borderSize/2 + noiseFactor * _.random(-thangSizes.borderSize.x/2, thangSizes.borderSize.x/2)
            'y': 0 + preset.borderSize/2 + noiseFactor * _.random(-thangSizes.borderSize.y/2, thangSizes.borderSize.y)
          }
          'margin': clusters[preset.borders].margin
        }
          continue
        while not @addThang {
          'id': @getRandomThang(clusters[preset.borders].thangs)
          'pos': {
            'x': i + preset.borderSize/2 + noiseFactor * _.random(-thangSizes.borderSize.x/2, thangSizes.borderSize.x/2)
            'y': presetSize.y - preset.borderSize/2 + noiseFactor * _.random(-thangSizes.borderSize.y, thangSizes.borderSize.y/2)
          }
          'margin': clusters[preset.borders].margin
        }
          continue

    for i in _.range(0, presetSize.y, thangSizes.borderSize.y)
      for j in _.range(3)
        while not @addThang {
          'id': @getRandomThang(clusters[preset.borders].thangs)
          'pos': {
            'x': 0 + preset.borderSize/2 + noiseFactor * _.random(-thangSizes.borderSize.x/2, thangSizes.borderSize.x)
            'y': i + preset.borderSize/2 + noiseFactor * _.random(-thangSizes.borderSize.y/2, thangSizes.borderSize.y/2)
          }
          'margin': clusters[preset.borders].margin
        }
          continue
        while not @addThang {
          'id': @getRandomThang(clusters[preset.borders].thangs)
          'pos': {
            'x': presetSize.x - preset.borderSize/2 + noiseFactor * _.random(-thangSizes.borderSize.x, thangSizes.borderSize.x/2)
            'y': i + preset.borderSize/2 + noiseFactor * _.random(-thangSizes.borderSize.y/2, thangSizes.borderSize.y/2)
          }
          'margin': clusters[preset.borders].margin
        }
          continue

  randomizeDecorations: (preset, presetSize)->
    if presetSize is presetSizes['small'] then sizeFactor = 1 else sizeFactor = 2
    for name, decoration of preset.decorations
      for num in _.range(sizeFactor * _.random(decoration.num[0], decoration.num[1]))
        rect = {
          'x':_.random(decoration.width/2 + preset.borderSize/2 + thangSizes.borderSize.x, presetSize.x - decoration.width/2 - preset.borderSize/2 - thangSizes.borderSize.x),
          'y':_.random(decoration.height/2 + preset.borderSize/2 + thangSizes.borderSize.y, presetSize.y - decoration.height/2 - preset.borderSize/2 - thangSizes.borderSize.y)
          'width':decoration.width
          'height':decoration.height
        }
        for cluster, range of decoration.clusters
          for i in _.range(_.random(range[0], range[1]))
            while not @addThang {
              'id':@getRandomThang(clusters[cluster].thangs)
              'pos':{
                'x':_.random(rect.x - rect.width/2, rect.x + rect.width/2)
                'y':_.random(rect.y - rect.height/2, rect.y + rect.height/2)
              }
              'margin':clusters[cluster].margin
            }
              continue

  addThang: (thang) ->
    for existingThang in @thangs
      if existingThang.margin is -1 or thang.margin is -1
        continue
      if Math.abs(existingThang.pos.x - thang.pos.x) <= thang.margin + existingThang.margin and Math.abs(existingThang.pos.y - thang.pos.y) <= thang.margin + existingThang.margin
        return false 
    @thangs.push thang
    true

  getRandomThang: (thangList) ->
    return thangList[_.random(0, thangList.length-1)]

  getRenderData: ->
    c = super()
    c.presets = presets
    c.presetSizes = presetSizes
    c

  onHidden: ->
    location.reload() if @reloadOnClose