Class: Wechat::Message

Inherits:
Object
  • Object
show all
Defined in:
lib/wechat/message.rb

Defined Under Namespace

Classes: ArticleBuilder

Constant Summary collapse

JSON_KEY_MAP = 
{
  "ToUserName" => "touser",
  "MediaId" => "media_id",
  "ThumbMediaId" => "thumb_media_id"
}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(message_hash) ⇒ Message

Returns a new instance of Message.



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# File 'lib/wechat/message.rb', line 34

def initialize(message_hash)
  @message_hash = message_hash || {}
end

Instance Attribute Details

#message_hash ⇒ Object (readonly)

Returns the value of attribute message_hash.



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# File 'lib/wechat/message.rb', line 32

def message_hash
  @message_hash
end

Class Method Details

.from_hash(message_hash) ⇒ Object 



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# File 'lib/wechat/message.rb', line 11

def from_hash message_hash
  self.new(message_hash)
end

.to(to_user) ⇒ Object 



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# File 'lib/wechat/message.rb', line 15

def to to_user
  self.new(:ToUserName=>to_user, :CreateTime=>Time.now.to_i)
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/wechat/message.rb', line 38

def [](key)
  message_hash[key]
end

#as(type) ⇒ Object 



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# File 'lib/wechat/message.rb', line 50

def as type
  case type
  when :text
    message_hash[:Content]

  when :image, :voice, :video
    Wechat.api.media(message_hash[:MediaId])

  when :location
    message_hash.slice(:Location_X, :Location_Y, :Scale, :Label).inject({}){|results, value| 
      results[value[0].to_s.underscore.to_sym] = value[1]; results}
  else
    raise "Don't know how to parse message as #{type}"
  end
end

#image(media_id) ⇒ Object 



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# File 'lib/wechat/message.rb', line 74

def image media_id
  update(:MsgType=>"image", :Image=>{:MediaId=>media_id})
end

#music(thumb_media_id, music_url, opts = {}) ⇒ Object 



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# File 'lib/wechat/message.rb', line 87

def music thumb_media_id, music_url, opts={}
  music_fields = camelize_hash_keys(opts.slice(:title, :description, :HQ_music_url).merge(music_url: music_url, thumb_media_id: thumb_media_id))
  update(:MsgType=>"music", :Music=>music_fields)
end

#news(collection, &block) ⇒ Object 



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# File 'lib/wechat/message.rb', line 92

def news collection, &block
  if block_given?
    article = ArticleBuilder.new
    collection.each{|item| yield(article, item)}
    items = article.items
  else
    items = collection.collect do |item| 
     camelize_hash_keys(item.symbolize_keys.slice(:title, :description, :pic_url, :url))
    end
  end

  update(:MsgType=>"news", :ArticleCount=> items.count, 
    :Articles=> items.collect{|item| camelize_hash_keys(item)})
end

#reply ⇒ Object 



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# File 'lib/wechat/message.rb', line 42

def reply
  Message.new(
    :ToUserName=>message_hash[:FromUserName], 
    :FromUserName=>message_hash[:ToUserName], 
    :CreateTime=>Time.now.to_i
  )
end

#save_to!(model_class) ⇒ Object 



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# File 'lib/wechat/message.rb', line 127

def save_to! model_class
  model = model_class.new(underscore_hash_keys(message_hash))
  model.save!
  return self
end

#text(content) ⇒ Object 



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# File 'lib/wechat/message.rb', line 70

def text content
  update(:MsgType=>"text", :Content=>content)
end

#to(openid) ⇒ Object 



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# File 'lib/wechat/message.rb', line 66

def to openid
  update(:ToUserName=>openid)
end

#to_json ⇒ Object 



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# File 'lib/wechat/message.rb', line 111

def to_json
  json_hash = deep_recursive(message_hash) do |key, value|
    key = key.to_s
    [(JSON_KEY_MAP[key] || key.downcase), value]
  end

  json_hash.slice!("touser", "msgtype", "content", "image", "voice", "video", "music", "news", "articles").to_hash
  case json_hash["msgtype"]
  when "text"
    json_hash["text"] = {"content" => json_hash.delete("content")}
  when "news"
    json_hash["news"] = {"articles" => json_hash.delete("articles")}
  end
  JSON.generate(json_hash)
end

#to_xml ⇒ Object 



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# File 'lib/wechat/message.rb', line 107

def to_xml
  message_hash.to_xml(root: "xml", children: "item", skip_instruct: true, skip_types: true)
end

#video(media_id, opts = {}) ⇒ Object 



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# File 'lib/wechat/message.rb', line 82

def video media_id, opts={}
  video_fields = camelize_hash_keys({media_id: media_id}.merge(opts.slice(:title, :description)))
  update(:MsgType=>"video", :Video=>video_fields)
end

#voice(media_id) ⇒ Object 



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# File 'lib/wechat/message.rb', line 78

def voice media_id
  update(:MsgType=>"voice", :Voice=>{:MediaId=>media_id})
end