class TextToVoice

# File lib/text2voice.rb, line 12
def initialize(api_key)
  @api_key = api_key
  @speaker = "haruka"
  @pitch = "100"
  @speed = "100"
  @volume = "100"
end

# File lib/text2voice.rb, line 25
def emotion(emotion:, level: :normal)
  @emotion = emotion.to_s
  @emotion_level = EMOTION_LEVEL[level]
  self
end

# File lib/text2voice.rb, line 31
def pitch(param)
  @pitch = param.to_s
  self
end

# File lib/text2voice.rb, line 51
def save_as(filename)
  res = send_request()

  case res
  when Net::HTTPOK
    binary_to_wav(filename, res.body)
  when Net::HTTPBadRequest
    raise BadRequest.new(res.body)
  when Net::HTTPUnauthorized
    raise Unauthoeized.new(res.body)
  else
    raise StandardError.new(res.body)
  end
end

# File lib/text2voice.rb, line 46
def speak(text)
  @text = text
  self
end

# File lib/text2voice.rb, line 20
def speaker(speaker_name)
  @speaker = speaker_name
  self
end

# File lib/text2voice.rb, line 36
def speed(param)
  @speed = param.to_s
  self
end

# File lib/text2voice.rb, line 41
def volume(param)
  @volume = param.to_s
  self
end

# File lib/text2voice.rb, line 95
def binary_to_wav(filename, binary)
  File.open("#{filename}", "w") do |io|
    io.binmode
    io.write binary
  end
end

# File lib/text2voice.rb, line 68
def create_request(text, speaker, emotion, emotion_level, pitch, speed, volume)
  req = Net::HTTP::Post.new(ENDPOINT.path)
  req.basic_auth(@api_key, '')
  data = "text=#{text}"
  data << ";speaker=#{speaker}"
  data << ";emotion=#{emotion}"
  data << ";emotion_level=#{emotion_level}"
  data << ";pitch=#{pitch}"
  data << ";speed=#{speed}"
  data << ";volume=#{volume}"
  req.body = data

  return req
end

# File lib/text2voice.rb, line 83
def send_request
  res = nil
  https = Net::HTTP.new(ENDPOINT.host, 443)
  https.use_ssl = true
  https.start do |https|
    req = create_request(@text, @speaker, @emotion, @emotion_level, @pitch, @speed, @volume)
    res = https.request(req)
  end

  return res
end