helpers.coffee

util = require 'util'

capitalizeFirst = (s) -> s[0].toUpperCase() + s.slice(1)
capitalize = (s) -> s.split(' ').map(capitalizeFirst).join(' ')
unslugify = (s) -> s.split('_').join(' ')

formatThousands = (n) ->
    np = n - Math.floor n
    ns = Math.floor(n).toString().split('')
    ns.reverse()
    groups = []
    g = ''
    gi = 0
    for n in ns
        if gi > 0 and gi % 3 == 0
            joined = g.split('')
            joined.reverse()
            groups.push joined.join('')
            g = ''
        g += n
        gi += 1
    joined = g.split('')
    joined.reverse()
    groups.push joined.join('')
    groups.reverse()
    return groups.join(',') + np.toFixed(2).slice(1)

formatPrice = (n) ->
    '$' + formatThousands n

randomString = (len=8) ->
    s = ''
    while s.length < len
        s += Math.random().toString(36).slice(2, len-s.length+2)
    return s

wrap = (s) ->
    '[' + s + ']'

inspect = (k, o) ->
    console.log wrap(k), util.inspect o, {depth: null, colors: true}

flatten = (ls) ->
    flat = []
    for l in ls
        for i in l
            flat.push i
    return flat

trimObj = (o) ->
    for k, v of o
        if !v?
            delete o[k]
    return o

module.exports = {
    capitalize
    unslugify
    formatThousands
    formatPrice
    randomString
    inspect
    flatten
    trimObj
}