Refactor website with new design & structure

src/client/models/crafting/crafting_plan.coffee

@@ -0,0 +1,164 @@
+#
+# Crafting Guide - crafting_plan.coffee
+#
+# Copyright © 2014-2016 by Redwood Labs
+# All rights reserved.
+#
+
+SimpleInventory = require './simple_inventory'
+
+########################################################################################################################
+
+module.exports = class CraftingPlan
+
+    constructor: (modPack, want, have, steps)->
+        if not modPack? then throw new Error 'modPack is required'
+        if not want? then throw new Error 'want is required'
+        if not have? then throw new Error 'have is required'
+        if not steps? then throw new Error 'steps is required'
+
+        @_have      = have
+        @_made      = null
+        @_modPack   = modPack
+        @_need      = null
+        @_rawScores = {}
+        @_scores    = {}
+        @_steps     = steps
+        @_want      = want
+
+        @_numberSteps()
+
+    # Public Methods ###############################################################################
+
+    computeRequired: ->
+        @_need = new SimpleInventory modPack:@_modPack
+        @_need.addInventory @_want
+
+        @_made = new SimpleInventory modPack:@_modPack
+        @_made.addInventory @_have
+
+        for i in [@_steps.length-1..0] by -1
+            step = @_steps[i]
+            step.multiplier = 0
+
+            for stack in step.recipe.output
+                if not stack?
+                    throw new Error 'stack should not be null here'
+
+                qualifiedSlug = @_modPack.qualifySlug stack.itemSlug
+                while @_need.quantityOf(qualifiedSlug) > 0
+                    @_executeStep step
+
+        @_made.addInventory @_want
+        @_pruneEmptySteps()
+        @_numberSteps()
+
+    hasRawScore: (name)->
+        return @_rawScores[name]?
+
+    getRawScore: (name)->
+        return @_rawScores[name]
+
+    setRawScore: (name, rawScore)->
+        @_rawScores[name] = rawScore
+
+    hasScore: (name)->
+        return @_scores[name]?
+
+    getScore: (name)->
+        return @_scores[name]
+
+    setScore: (name, score)->
+        @_scores[name] = score
+
+    # Property Methods #############################################################################
+
+    Object.defineProperties @prototype,
+        have:
+            get: -> @_have
+        length:
+            get: -> @steps.length
+        made:
+            get: -> @_made
+        need:
+            get: -> @_need
+        steps:
+            get: -> @_steps
+        want:
+            get: -> @_want
+
+    # Object Overrides #############################################################################
+
+    toString: ->
+        result = ["To Make:"]
+        @_want.each (stack)->
+            result.push "    #{stack}"
+
+        result.push "When you already have:"
+        @_have.each (stack)->
+            result.push "    #{stack}"
+
+        result.push "Start with:"
+        if @_need?
+            @_need.each (stack)->
+                result.push "    #{stack}"
+
+        result.push "Use these recipes:"
+        for step in @_steps
+            result.push "    #{step}"
+
+        result.push "To produce:"
+        if @_made?
+            @_made.each (stack)->
+                result.push "    #{stack}"
+
+        if _.keys(@_rawScores).length > 0
+            result.push "Scores:"
+            for criteria, score of @_rawScores
+                if @_scores[criteria]?
+                    result.push "    #{criteria}: #{score} (#{@_scores[criteria]})"
+                else
+                    result.push "    #{criteria}: #{score}"
+
+        return result.join '\n'
+
+    # Private Methods ##############################################################################
+
+    _executeStep: (step)->
+        step.multiplier += 1
+        recipe = step.recipe
+
+        for stack in recipe.input
+            qualifiedSlug = @_modPack.qualifySlug stack.itemSlug
+
+            available = @_made.quantityOf qualifiedSlug
+            required  = recipe.getQuantityRequired stack.itemSlug
+            consumed  = Math.min required, available
+            deficit   = required - consumed
+
+            @_made.remove qualifiedSlug, consumed
+            @_need.add qualifiedSlug, deficit
+
+        for stack in recipe.output
+            qualifiedSlug = @_modPack.qualifySlug stack.itemSlug
+
+            deficit     = @_need.quantityOf qualifiedSlug
+            created     = recipe.getQuantityProduced stack.itemSlug
+            replenished = Math.min deficit, created
+            surplus     = created - replenished
+
+            @_made.add qualifiedSlug, surplus
+            @_need.remove qualifiedSlug, replenished
+
+    _numberSteps: ->
+        for step, i in @_steps
+            step.number = i + 1
+
+    _pruneEmptySteps: ->
+        index = 0
+        while index < @_steps.length
+            step = @_steps[index]
+            if step.multiplier is 0
+                @_steps.splice index, 1
+            else
+                index++