mirror of
https://github.com/codeninjasllc/codecombat.git
synced 2024-11-28 01:55:38 -05:00
89 lines
3.1 KiB
CoffeeScript
89 lines
3.1 KiB
CoffeeScript
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# path: an array of indexes to navigate into a JSON object
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# left:
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module.exports.interpretDelta = (delta, path, left, schema) ->
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# takes a single delta and converts into an object that can be
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# easily formatted into something human readable.
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betterDelta = { action:'???', delta: delta }
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betterPath = []
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parentLeft = left
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parentSchema = schema
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for key in path
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# TODO: A smarter way of getting child schemas
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childSchema = parentSchema?.items or parentSchema?.properties?[key] or {}
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childLeft = parentLeft?[key]
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betterKey = null
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betterKey ?= childLeft.name or childLeft.id if childLeft
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betterKey ?= "#{childSchema.title} ##{key+1}" if childSchema.title and _.isNumber(key)
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betterKey ?= "#{childSchema.title}" if childSchema.title
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betterKey ?= _.string.titleize key
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betterPath.push betterKey
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parentLeft = childLeft
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parentSchema = childSchema
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betterDelta.path = betterPath.join(' :: ')
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betterDelta.schema = childSchema
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betterDelta.left = childLeft
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betterDelta.right = jsondiffpatch.patch childLeft, delta
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if _.isArray(delta) and delta.length is 1
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betterDelta.action = 'added'
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betterDelta.newValue = delta[0]
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if _.isArray(delta) and delta.length is 2
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betterDelta.action = 'modified'
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betterDelta.oldValue = delta[0]
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betterDelta.newValue = delta[1]
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if _.isArray(delta) and delta.length is 3 and delta[1] is 0 and delta[2] is 0
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betterDelta.action = 'deleted'
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betterDelta.oldValue = delta[0]
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if _.isPlainObject(delta) and delta._t is 'a'
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betterDelta.action = 'modified-array'
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if _.isPlainObject(delta) and delta._t isnt 'a'
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betterDelta.action = 'modified-object'
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if _.isArray(delta) and delta.length is 3 and delta[1] is 0 and delta[2] is 3
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betterDelta.action = 'moved-index'
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betterDelta.destinationIndex = delta[1]
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if _.isArray(delta) and delta.length is 3 and delta[1] is 0 and delta[2] is 2
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betterDelta.action = 'text-diff'
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betterDelta.unidiff = delta[0]
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left = betterDelta.left.trim().split('\n')
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right = betterDelta.right.trim().split('\n')
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shifted = popped = false
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while left.length > 5 and right.length > 5 and left[0] is right[0] and left[1] is right[1]
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left.shift()
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right.shift()
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shifted = true
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while left.length > 5 and right.length > 5 and left[left.length-1] is right[right.length-1] and left[left.length-2] is right[right.length-2]
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left.pop()
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right.pop()
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popped = true
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left.push('...') and right.push('...') if popped
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left.unshift('...') and right.unshift('...') if shifted
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betterDelta.trimmedLeft = left.join('\n')
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betterDelta.trimmedRight = right.join('\n')
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betterDelta
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module.exports.flattenDelta = flattenDelta = (delta, path=null) ->
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# takes a single delta and returns an array of deltas
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path ?= []
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return [{path:path, delta:delta}] if _.isArray delta
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results = []
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affectingArray = delta._t is 'a'
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for index, childDelta of delta
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continue if index is '_t'
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index = parseInt(index.replace('_', '')) if affectingArray
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results = results.concat flattenDelta(childDelta, path.concat([index]))
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results
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