mirror of https://github.com/fazo96/pbs.git
48 lines
1.5 KiB
CoffeeScript
Executable File
48 lines
1.5 KiB
CoffeeScript
Executable File
#!/usr/bin/env coffee
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console.log "pert"
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list = [{id: 0, depends: [], duration: 2}, { id: 1, depends: [0], duration: 3},{id: 2, depends: [0,1], duration: 4}]
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maxa = (l) -> return Math.max.apply null, l
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# Find the activity with given id
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toActivity = (id) ->
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item = {}
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list.forEach (x) -> if x.id is id then item = x
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return item
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# Find the item
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calculateEndDay = (item) ->
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if !item.startDay?
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console.log "calculating start day of",item.id
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item.startDay = calculateStartDay item
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console.log "Start day of",item.id,":",item.startDay
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item.endDay = item.startDay + item.duration
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console.log "End Day of",item.id,":",item.endDay
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return item.endDay
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# Find out which day the activity starts
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calculateStartDay = (item) ->
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if item.depends.length is 0 then return item.startDay = 0
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console.log "Deps:",item.depends.map(toActivity)
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console.log "EndDays:",item.depends.map(toActivity).map(calculateEndDay)
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max = maxa item.depends.map(toActivity).map(calculateEndDay)
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console.log max
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# write max delay time to each depend
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item.depends.forEach (x) ->
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console.log "Writing permittedDelay to dependency", x
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i = toActivity x
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i.permittedDelay = max - calculateEndDay(i)
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return item.startDay = max
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# Find out which activity has the highest id
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highestID = -> return maxa(list.map (x) -> x.id)
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calculate = ->
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calculateEndDay toActivity(highestID())
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list.forEach (x) -> if !x.permittedDelay? then x.final = true
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return list
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console.log calculate()
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