Add Ruby's SDK implement code. (#786)

sdks/ruby-client/dify_client/client.rb

+require 'net/http'
+require 'json'
+require 'uri'
+
+class DifyClient
+    def initialize(api_key)
+        @api_key = api_key
+        @base_url = "https://api.dify.ai/v1"
+    end
+
+    def _send_request(method, endpoint, data = nil, params = nil, stream = false)
+        uri = URI.parse("#{@base_url}#{endpoint}")
+
+        http = Net::HTTP.new(uri.host, uri.port)
+        http.use_ssl = true
+
+        headers = {
+            "Authorization" => "Bearer #{@api_key}",
+            "Content-Type" => "application/json"
+        }
+
+        if method == "GET"
+            uri.query = URI.encode_www_form(params) if params
+            request = Net::HTTP::Get.new(uri.request_uri, headers)
+        elsif method == "POST"
+            request = Net::HTTP::Post.new(uri.request_uri, headers)
+            request.body = data.to_json
+        end
+
+        response = http.request(request)
+        return response
+    end
+
+    def message_feedback(message_id, rating, user)
+        data = {
+            rating: rating,
+            user: user
+        }
+        return _send_request("POST", "/messages/#{message_id}/feedbacks", data)
+    end
+
+    def get_application_parameters(user)
+        params = {user: user}
+        return _send_request("GET", "/parameters", nil, params)
+    end
+end
+
+class CompletionClient < DifyClient
+    def create_completion_message(inputs, query, response_mode, user)
+        data = {
+            inputs: inputs,
+            query: query,
+            response_mode: response_mode,
+            user: user
+        }
+        return _send_request("POST", "/completion-messages", data, nil, response_mode == "streaming")
+    end
+end
+
+class ChatClient < DifyClient
+    def create_chat_message(inputs, query, user, response_mode = "blocking", conversation_id = nil)
+        data = {
+            inputs: inputs,
+            query: query,
+            user: user,
+            response_mode: response_mode
+        }
+        data[:conversation_id] = conversation_id if conversation_id
+
+        return _send_request("POST", "/chat-messages", data, nil, response_mode == "streaming")
+    end
+
+    def get_conversation_messages(user, conversation_id = nil, first_id = nil, limit = nil)
+        params = {user: user}
+        params[:conversation_id] = conversation_id if conversation_id
+        params[:first_id] = first_id if first_id
+        params[:limit] = limit if limit
+
+        return _send_request("GET", "/messages", nil, params)
+    end
+
+    def get_conversations(user, last_id = nil, limit = nil, pinned = nil)
+        params = {user: user, last_id: last_id, limit: limit, pinned: pinned}
+        return _send_request("GET", "/conversations", nil, params)
+    end
+
+    def rename_conversation(conversation_id, name, user)
+        data = {name: name, user: user}
+        return _send_request("POST", "/conversations/#{conversation_id}/name", data)
+    end
+end