:; #-*- mode: nendo; syntax: scheme -*-;;
;;;
;;; google-imd.nnd - google-imdを使ってひらがなから、漢字変換候補を取得する
;;;  
;;;   Copyright (c) 2010  Kiyoka Nishiyama  <kiyoka@sumibi.org>
;;;   
;;;   Redistribution and use in source and binary forms, with or without
;;;   modification, are permitted provided that the following conditions
;;;   are met:
;;;   
;;;   1. Redistributions of source code must retain the above copyright
;;;      notice, this list of conditions and the following disclaimer.
;;;  
;;;   2. Redistributions in binary form must reproduce the above copyright
;;;      notice, this list of conditions and the following disclaimer in the
;;;      documentation and/or other materials provided with the distribution.
;;;  
;;;   3. Neither the name of the authors nor the names of its contributors
;;;      may be used to endorse or promote products derived from this
;;;      software without specific prior written permission.
;;;  
;;;   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
;;;   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
;;;   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
;;;   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
;;;   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
;;;   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
;;;   TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
;;;   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;;;   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;;;   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;;;   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;;  
;;;  $Id: 
;;;
(use srfi-1)
(use rfc.json)
(require "net/http")

(define (json-string->sekka-result-string jsonstr)
  (let* ((obj (parse-json-string jsonstr))
         (kouho-list (filter-map
                      (lambda (entry)
                        (if (vector? entry)
                            (vector->list (vector-ref entry 1))
                            false))
                      (vector->list obj))))
    (if (null? kouho-list)
        kouho-list
        (map
         (lambda (x)
           (string-join x))
         (apply zip kouho-list)))))


(define (request-google-ime keyword unit-test proxy-host proxy-port)
  (let* ((body "")
         (target "google-ime-api-normalizer.heroku.com")
         (_ (Net::HTTP.version_1_2))
         (http (if proxy-host
                   (let1 proxy-class (Net::HTTP.Proxy proxy-host proxy-port)
                     (proxy-class.new target))
                   (Net::HTTP.new target))))
    (set! http.open_timeout 20)
    (set! http.read_timeout 20)
    (http.start 
     (&block ()
       (let* ((path (sprintf "/transliterate%s?langpair=%s&text=%s"
                             (if unit-test "_test" "")
                             "ja-Hira|ja" (URI.encode keyword)))
              (response (http.get path)))
         (set! body response.body))))
    (json-string->sekka-result-string body)))