Class: MSTranslator

Inherits:
Object
  • Object
show all
Defined in:
lib/lita/handlers/msTranslator.rb

Constant Summary collapse

OAUTH_URI = 
"https://datamarket.accesscontrol.windows.net/v2/OAuth2-13"
API_URI = 
"https://api.microsofttranslator.com/V2/Ajax.svc/"
REST_LANGCODES = 
"GetLanguagesForTranslate"
REST_LANGNAMES = 
"GetLanguageNames"
REST_DETECTION = 
"Detect"
REST_TRANSLATE = 
"Translate"

Instance Method Summary collapse

Constructor Details

#initialize(clientId, clientSecret, http, redis) ⇒ MSTranslator

Returns a new instance of MSTranslator.



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# File 'lib/lita/handlers/msTranslator.rb', line 12

def initialize(clientId, clientSecret, http, redis)
  @clientId = clientId
  @clientSecret = clientSecret
  @http = http
  @redis = redis
end

Instance Method Details

#apiSuccess?(result) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lita/handlers/msTranslator.rb', line 47

def apiSuccess?(result)
  if result.status != 200
    false
  else
    /ID=\d{4}\.V2_Json\.(\w+)\.\w{8}/.match(result.body).nil?
  end
end

#detect(text) ⇒ Object 



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# File 'lib/lita/handlers/msTranslator.rb', line 92

def detect(text)
  result = @http.get do |req|
    req.url API_URI+REST_DETECTION, :text => text
    req.headers['Authorization'] = "Bearer "+@redis.get("token")
  end
  TranslationResult.new(apiSuccess?(result), result.body.slice(3..result.body.length))
end

#grabAccessToken ⇒ Object 



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# File 'lib/lita/handlers/msTranslator.rb', line 19

def grabAccessToken()
  result = @http.post(
    OAUTH_URI,
    client_id: @clientId,
    client_secret: @clientSecret,
    scope: "http://api.microsofttranslator.com",
    grant_type: "client_credentials"
  )
  if result.status == 200
    raw = JSON.parse(result.body)
    @redis.set("token", raw["access_token"])
    @redis.set("start", Time.now)
    @redis.set("expiry", raw["expires_in"])
    true
  else
    false
  end
end

#languageCodes ⇒ Object 



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# File 'lib/lita/handlers/msTranslator.rb', line 55

def languageCodes()
  result = @http.get do |req|
    req.url API_URI+REST_LANGCODES
    req.headers['Authorization'] = "Bearer "+@redis.get("token")
  end
  if apiSuccess?(result)
    TranslationResult.new(
      true,
      JSON.parse(result.body.slice(3..result.body.length)).join(",")
    )
  else
    TranslationResult.new(
      false,
      result.body.slice(3..result.body.length)
    )
  end
end

#languageNames(codes) ⇒ Object 



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# File 'lib/lita/handlers/msTranslator.rb', line 73

def languageNames(codes)
  codes = '['+codes.split(",").map { |code| '"'+code+'"' }.join(",")+']'
  result = @http.get do |req|
    req.url API_URI+REST_LANGNAMES, {:locale => "en", :languageCodes => codes}
    req.headers['Authorization'] = "Bearer "+@redis.get("token")
  end
  if apiSuccess?(result)
    TranslationResult.new(
      true,
      JSON.parse(result.body.slice(3..result.body.length)).join(",")
    )
  else
    TranslationResult.new(
      false,
      result.body.slice(3..result.body.length)
    )
  end
end

#staleToken? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lita/handlers/msTranslator.rb', line 38

def staleToken?()
  start = @redis.get("start")
  expiry = @redis.get("expiry")
  if start.nil? || (Time.parse(start) + expiry.to_i) < Time.now
    return true
  end
  false
end

#translate(text, to, from = nil) ⇒ Object 



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# File 'lib/lita/handlers/msTranslator.rb', line 100

def translate(text, to, from=nil)
  result = @http.get do |req|
    req.url API_URI+REST_TRANSLATE, :text => text, :from => from, :to => to, :contentType => "text/plain"
    req.headers['Authorization'] = "Bearer "+@redis.get("token")
  end
  TranslationResult.new(apiSuccess?(result), result.body.slice(3..result.body.length))
end