49 lines
1.4 KiB
CoffeeScript
49 lines
1.4 KiB
CoffeeScript
crypto = require 'crypto'
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path = require 'path'
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fs = require 'fs'
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config = require('./server/config')
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cachedVersion = null
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cachedAssetHash = null
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cachedFingerprints = {}
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S3_ASSET_PREFIX = 'sim/'
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get = (src, options = {}) ->
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return src if config.IS_LOCAL
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hash = options.fingerprint || getFingerprint(src)
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extName = path.extname(src)
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"#{S3_ASSET_PREFIX}#{src[0...-extName.length]}-#{hash}#{extName}"
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getFingerprint = (src) ->
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return cachedFingerprints[src] if cachedFingerprints[src]
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contents = fs.readFileSync("public/#{src}")
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fingerprint = crypto.createHash('md5').update(contents).digest('hex')
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cachedFingerprints[src] = fingerprint
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fingerprint
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getAbsolute = (src, options = {}) ->
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prefix = (if config.IS_LOCAL then "" else "//media.pokebattle.com")
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"#{prefix}/#{get(src, options)}"
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# Returns a MD5 hash representing the version of the assets.
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getVersion = ->
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return cachedVersion if cachedVersion
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hash = crypto.createHash('md5')
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for jsPath in fs.readdirSync('public/js')
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hash = hash.update(fs.readFileSync("public/js/#{jsPath}"))
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cachedVersion = hash.digest('hex')
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cachedVersion
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# Returns a hash of asset hashes, keyed by filename
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asHash = ->
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return cachedAssetHash if cachedAssetHash
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cachedAssetHash = {}
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for jsPath in fs.readdirSync('public/js')
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jsPath = "js/#{jsPath}"
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cachedAssetHash[jsPath] = getFingerprint(jsPath)
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cachedAssetHash
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module.exports = {S3_ASSET_PREFIX, get, asHash, getAbsolute, getVersion}
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