77 lines
2.4 KiB
CoffeeScript
77 lines
2.4 KiB
CoffeeScript
###
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* Vkontakte (VK.com) API music search tool
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* https://github.com/magnolia-fan/vkontakte_music_search
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*
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* Copyright 2011, Gregory Eremin
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* Licensed under the MIT license.
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* https://raw.github.com/magnolia-fan/vkontakte_music_search/master/LICENSE
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###
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class window.VkontakteMusic
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query_results: {}
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search: (artist, track, duration, callback, return_all = false) ->
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query = this.prepareQueryPart(artist)+" "+this.prepareQueryPart(track)
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if @query_results[query]? and not return_all
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callback @query_results[query]
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that = this
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VK.Api.call 'audio.search', q: query, count: 200, (r) ->
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results = that.range r.response, artist, track, duration
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top_result = null
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if results.length > 0
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top_result = results[0]
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that.query_results[query] = results
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callback if return_all then results else top_result
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range: (data, artist, track, duration) ->
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if typeof duration is 'string'
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duration = duration.split ':'
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duration = parseInt(duration[0], 10) * 60 + parseInt(duration[1], 10)
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for item, i in data
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if typeof item isnt 'object'
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continue
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item.score = 0
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item.artist = this.trim(item.artist)
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item.title = this.trim(item.title)
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score = 0
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if item.artist.length > 0
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if item.artist == artist
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score += 10
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else if item.artist.split(artist).length is 2
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score += 5
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else if item.title.split(artist).length is 2
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score += 4
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if item.artist.length > 0
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if item.title == track
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score += 10
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else if item.title.split(track).length is 2
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score += 5
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if duration != 0 and parseInt(item.duration, 10) == duration
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score += 15
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else
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delta = Math.abs parseInt(item.duration, 10) - duration
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score += (10 - delta) if delta < 10
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data[i].score = score
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if data.length > 0
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if typeof data[0] isnt 'object'
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data.splice(0, 1)
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data.sort (a, b) ->
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b.score - a.score
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data
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prepareQueryPart: (string) ->
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this.trim string
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.replace(/,\./, ' ')
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.match(/[a-zA-Zа-яА-ЯёЁ0-9\s-']+/g).join(' ')
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.replace(/(?:^|\s)The\s/i, ' ')
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.replace(/\(.*\)/i, '')
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.split('/')[0]
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trim: (str) ->
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while str.indexOf(' ') isnt -1
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str = str.replace(' ', ' ')
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if str.charAt(0) is ' '
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str = str.substring(1)
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if str.charAt(str.length - 1) is ' '
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str = str.substring(0, str.length - 1)
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str
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