refactor: The first refactored version for sdk release (#907)

Co-authored-by: chengfangyin2 <chengfangyin3@jd.com>

dbgpt/app/scene/chat_db/data_loader.py

@@ -0,0 +1,48 @@
+import xml.etree.ElementTree as ET
+import json
+import logging
+
+from dbgpt.util.json_utils import serialize
+
+
+class DbDataLoader:
+    def get_table_view_by_conn(self, data, speak, sql: str = None):
+        # import pandas as pd
+        #
+        # ### tool out data to table view
+        # if len(data) < 1:
+        #     data.insert(0, ["result"])
+        # df = pd.DataFrame(data[1:], columns=data[0])
+        # html_table = df.to_html(index=False, escape=False, sparsify=False)
+        # table_str = "".join(html_table.split())
+        # html = f"""<div class="w-full overflow-auto">{table_str}</div>"""
+        # view_text = f"##### {str(speak)}" + "\n" + html.replace("\n", " ")
+        # return view_text
+
+        param = {}
+        api_call_element = ET.Element("chart-view")
+        err_msg = None
+        try:
+            param["type"] = "response_table"
+            param["sql"] = sql
+            param["data"] = json.loads(
+                data.to_json(orient="records", date_format="iso", date_unit="s")
+            )
+            view_json_str = json.dumps(param, default=serialize, ensure_ascii=False)
+        except Exception as e:
+            logging.error("parse_view_response error!" + str(e))
+            err_param = {}
+            err_param["sql"] = f"{sql}"
+            err_param["type"] = "response_table"
+            err_param["err_msg"] = str(e)
+            err_param["data"] = []
+            err_msg = str(e)
+            view_json_str = json.dumps(err_param, default=serialize, ensure_ascii=False)
+
+        # api_call_element.text = view_json_str
+        api_call_element.set("content", view_json_str)
+        result = ET.tostring(api_call_element, encoding="utf-8")
+        if err_msg:
+            return f"""{speak} \\n <span style=\"color:red\">ERROR!</span>{err_msg} \n {result.decode("utf-8")}"""
+        else:
+            return speak + "\n" + result.decode("utf-8")