import re
import pandas as pd
import clr
import os
from config import CURRENT_DIR_PATH_NET, NET_FOLDER

folder = os.path.join(CURRENT_DIR_PATH_NET, NET_FOLDER)
clr.AddReference(
    folder
    + r"\Microsoft.AnalysisServices.AdomdClient\v4.0_15.0.0.0__89845dcd8080cc91\Microsoft.AnalysisServices.AdomdClient.DLL"
)

from Microsoft.AnalysisServices.AdomdClient import AdomdConnection, AdomdCommand  # type: ignore

class ASDataFetcher:
    def __init__(
        self,
        workspace,
        username,
        password,
        queries,
        json_name,
        result_folder_path,
        isAdmin=True,
        catalog=None,
        effective_username=None,
        customdata=None,
        role=None,
        model_number=None,
    ):
        self.workspace = workspace
        self.username = username
        self.password = password
        self.queries = queries
        self.isAdmin = isAdmin
        self.effective_username = effective_username
        self.customdata = customdata
        self.role = role
        self.result_folder_path = result_folder_path
        self.error_list = []
        self.json_name = json_name
        self.model_number = model_number
        self.log_messages = []
        self.catalog = catalog

        # 先将当前对象的 connString 方法的返回值赋值给当前对象的 conn_string 属性, 以便后续使用
        self.conn_string = self.connString()

    def connString(self) -> str:
        # 初始化连接字符串，包含数据源、用户名和密码
        # 如果workspace开头是powerbi，则连接字符串中包含catalog
        if self.workspace.startswith("powerbi://"):
            conn = f"DataSource={self.workspace};User ID={self.username};Password={self.password};Initial Catalog={self.catalog}"
        else:
            conn = f"DataSource={self.workspace};User ID={self.username};Password={self.password}"

        # 如果是管理员，直接返回连接字符串
        if self.isAdmin:
            self.result_excel_name = f"admin_{self.json_name}_{self.model_number}"
            self.result_full_excel_name = os.path.join(
                self.result_folder_path, self.result_excel_name
            )
            return conn
        # 如果不是管理员，且提供了角色信息
        elif self.role:
            # 如果提供了有效的用户名，返回包含有效用户名和角色的连接字符串
            if self.effective_username:
                self.result_excel_name = (
                    f"{self.role}_{self.effective_username}_{self.json_name}_{self.model_number}"
                )
                self.result_full_excel_name = os.path.join(
                    self.result_folder_path, self.result_excel_name
                )
                return f"{conn};EffectiveUserName={self.effective_username};Roles={self.role};"
            
            # 如果提供了自定义数据，返回包含自定义数据和角色的连接字符串
            elif self.customdata:
                self.result_excel_name = (
                    f"{self.role}_{self.customdata}_{self.json_name}_{self.model_number}"
                )
                self.result_full_excel_name = os.path.join(
                    self.result_folder_path, self.result_excel_name
                )
                return f"{conn};CustomData={self.customdata};Roles={self.role};"
            
            # 如果只提供了角色，返回包含角色的连接字符串
            else:
                self.result_excel_name = f"{self.role}_-NoUser-_{self.json_name}_{self.model_number}"
                self.result_full_excel_name = os.path.join(
                    self.result_folder_path, self.result_excel_name
                )
                return f"{conn};Roles={self.role};"
        # 如果不是管理员且未提供角色信息，抛出异常
        else:
            raise ValueError("非管理员用户必须提供角色信息")

    def readData(self, reader):
        # 获取列名
        column_names = [reader.GetName(i) for i in range(reader.FieldCount)]
        # 初始化数据存储
        data = []
        while reader.Read():
            # 读取每一行的数据
            row_data = [reader[i] for i in range(reader.FieldCount)]
            # 将行数据添加到数据列表中
            data.append(row_data)
        # 将数据转换为 DataFrame
        df = pd.DataFrame(data, columns=column_names)
        # 返回DataFrame和下一个结果集
        return df, reader.NextResult()

    def getDataFromAS(self, query):

        # 创建AdomdConnection对象
        conn = AdomdConnection(self.conn_string)
        try:
            # 建立连接
            conn.Open()
            # 创建命令
            cmd = AdomdCommand(query, conn)
            # 执行命令
            reader = cmd.ExecuteReader()
            IsNext = True
            while IsNext:
                # 将结果集转换为DataFrame
                df, IsNext = self.readData(reader)
                # 重命名列名
                df.columns = [
                    (
                        re.search(r"\[(.*?)\]", col).group(1)
                        if re.search(r"\[(.*?)\]", col)
                        else col
                    )
                    for col in df.columns
                ]
                yield df
        except Exception as ex:
            message = f"错误信息: {ex}"
            print(message)
            self.log_messages.append(f"\n{message}")
        finally:
            # 关闭连接
            conn.Close()

    def writeToExcel(self, print_lock):
        # 创建一个ExcelWriter对象
        with pd.ExcelWriter(
            f"{self.result_full_excel_name}.xlsx", engine="openpyxl"
        ) as writer:
            sheet_name_id = 1
            # 将DataFrame写入不同的工作表
            for query in self.queries:
                for df in self.getDataFromAS(query):
                    try:
                        # 访问工作簿和工作表
                        workbook = writer.book
                        worksheet = workbook.create_sheet(str(sheet_name_id))
                        worksheet["A1"] = query

                        # 将DataFrame写入Excel文件
                        df.to_excel(
                            writer,
                            sheet_name=str(sheet_name_id),
                            index=True,
                            float_format="%.2f",
                            startrow=1,
                        )
                    except Exception as e:
                        with print_lock:
                            message = f"写入工作表 {sheet_name_id} 失败: {e}"
                            print(message)
                            self.log_messages.append(f"\n{message}")
                        self.error_list.append(sheet_name_id)
                    else:
                        with print_lock:
                            message = f"{self.result_excel_name} \n表格大小：{df.shape} \n写入工作表 {sheet_name_id}"
                            print(message)
                            self.log_messages.append(f"\n{message}")
                    finally:
                        with print_lock:
                            message = f"-------------------------"
                            print(message)
                            self.log_messages.append(f"{message}")
                        sheet_name_id += 1
        return self.error_list


if __name__ == "__main__":
    pass