import io, json, os
from oauthlib.oauth2 import BackendApplicationClient
from requests_oauthlib import OAuth2Session
from dataclasses import dataclass
from flask import Flask
from flask import request
from datetime import datetime
import pandas as pd


@dataclass
class bbg_schedule_run:
    credentail_file: str

    # 获取BBG现值数据
    def get_sched_data(self, identifier):
        with io.open(self.credentail_file, encoding="utf-8") as credential_file:
            CREDENTIALS = json.load(credential_file)

        CLIENT = BackendApplicationClient(client_id=CREDENTIALS['client_id'])

        OAUTH2_ENDPOINT = 'https://bsso.blpprofessional.com/ext/api/as/token.oauth2'
        SESSION = OAuth2Session(client=CLIENT)
        SESSION.fetch_token(token_url=OAUTH2_ENDPOINT, client_secret=CREDENTIALS['client_secret'])

        URL = 'https://api.bloomberg.com/eap/catalogs/47929/content/responses/?requestIdentifier=' + identifier

        rep = SESSION.get(URL, headers={'api-version': "2"})
        # rep.json()

        DATA_URL = 'https://api.bloomberg.com/eap/catalogs/47929/content/responses/' + rep.json()['contains'][0]['key']

        jdata = SESSION.get(DATA_URL, headers={'api-version': "2"}).json()

        # return (pd.json_normalize(jdata).to_json())
        return jdata

    # 获取BBG历史数据文件
    def get_sched_history_file(self, identifier, file_name):
        with io.open(self.credentail_file, encoding="utf-8") as credential_file:
            CREDENTIALS = json.load(credential_file)

        CLIENT = BackendApplicationClient(client_id=CREDENTIALS['client_id'])

        OAUTH2_ENDPOINT = 'https://bsso.blpprofessional.com/ext/api/as/token.oauth2'
        SESSION = OAuth2Session(client=CLIENT)
        SESSION.fetch_token(token_url=OAUTH2_ENDPOINT, client_secret=CREDENTIALS['client_secret'])

        URL = 'https://api.bloomberg.com/eap/catalogs/47929/content/responses/?requestIdentifier=' + identifier

        rep = SESSION.get(URL, headers={'api-version': "2"})

        DATA_URL = 'https://api.bloomberg.com/eap/catalogs/47929/content/responses/' + rep.json()['contains'][0]['key']

        jdata = SESSION.get(DATA_URL, headers={'api-version': "2"}).json()
        df = pd.json_normalize(jdata)
        df.to_csv(file_name, index=False)

        return True


# hug接口输出为json格式
app = Flask(__name__)

# 服务端口号
server_port = 7110

# 鉴权文件地址
ps_credential_path = "ps-credential.txt"  # 鉴权文件地址

# 任务对应的归档目录
task_key_dir_dict = {
    "IDpcsgDailyRunHistU2": "data/histu2", "IDpcsgDailyRunHist4": "data/hist4", "IDpcsgDailyRunHist1": "data/hist1",
    "IDpcsgDailyRunHist2": "data/hist2", "IDpcsgDailyRunHistV1": "data/histv1", "IDpcsgDailyRun4": "data/run4",
    "IDpcsgDailyRun6": "data/run6", "IDpcsgDailyRun7": "data/run7", "IDpcsgDailyRun8": "data/run8",
    "IDpcsgDailySnap0000": "data/snap0000", "IDpcsgDailySnap0330": "data/snap0330",
    "IDpcsgDailySnap0345": "data/snap0345", "IDpcsgDailyRun10": "data/day10", "IDpcsgDailyRun11": "data/run11"
}


@app.route('/api/bloomberg/server')
def bloomberg_server():
    return {"code": 200, "data": "ok", "error": ""}


@app.route('/api/bloomberg/general_data', methods=['GET'])
def get_bloomberg_general_data():
    task_key = request.args.get('task_key', default="", type=str)
    if task_key is None or task_key == "":
        return {"code": 403, "data": "", "error": "task_key is missing"}
    print("task_key: ", task_key)

    save_dir = task_key_dir_dict[task_key]
    if dir == "":
        return {"code": 403, "data": "", "error": "save_dir is missing"}
    print("save_dir: ", save_dir)

    try:
        bbg_down = bbg_schedule_run(ps_credential_path)
        bbg_data = bbg_down.get_sched_data(task_key)

        # TEST
        # with open("data/day3/2024-06-19.json", 'r', encoding='utf-8') as file:
        #     bbg_data = file.read()  # 读取文件全部内容
        # print(bbg_data)  # 打印文件内容

        # 写入文件留档
        write_data_to_file(bbg_data, save_dir)

        resp_data = {
            "code": 200,
            "data": bbg_data,
            "msg": "获取成功"
        }
        return json.dumps(resp_data, indent=2)
    except Exception as e:
        err_msg = str(e)
        print(err_msg)
        return {"code": 403, "data": "", "error": err_msg}


@app.route('/api/bloomberg/down', methods=['GET'])
def bloomberg_test():
    task_key = request.args.get('task_key', default="", type=str)
    if task_key is None or task_key == "":
        return {"code": 403, "data": "", "error": "task key is none"}

    try:
        bbg_down = bbg_schedule_run(ps_credential_path)
        today_date_str = datetime.now().strftime('%Y%m%d')
        file_name = f"dailyHistory-{task_key}-{today_date_str}.csv"
        bbg_down.get_sched_history_file(task_key, file_name)

        return {"code": 200, "data": "", "error": ""}
    except Exception as e:
        err_msg = str(e)
        print(err_msg)
        return {"code": 403, "data": "", "error": err_msg}


# write_data_to_file 数据写入文件
def write_data_to_file(json_data, dir_path=None):
    # 获取当前日期并格式化为YYYY-MM-DD形式
    today_date_str = datetime.now().strftime('%Y-%m-%d')
    file_name = f"{today_date_str}.json"

    # 确定输出目录
    directory = dir_path if dir_path else os.path.join("output", "data")

    # 构建完整的文件路径
    file_path = os.path.join(directory, file_name)

    # 检查目录是否存在，如果不存在则创建
    if not os.path.exists(directory):
        os.makedirs(directory)
        print(f"目录 '{directory}' 已创建。")

    # 写入JSON数据到文件
    try:
        with open(file_path, 'w', encoding='utf-8') as json_file:
            json.dump(json_data, json_file, ensure_ascii=False, indent=4)
            print(f"JSON数据已成功写入/更新至 '{file_path}'。")
    except Exception as e:
        print(f"写入文件时发生错误：{e}")


if __name__ == "__main__":
    app.run(host='0.0.0.0', port=server_port, debug=True)