# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.

"""
This example shows how a TrainerRM works based on TaskManager with rolling tasks.
After training, how to collect the rolling results will be shown in task_collecting.
"""

from pprint import pprint

import fire
import qlib
from qlib.config import REG_CN
from qlib.workflow import R
from qlib.workflow.task.gen import RollingGen, task_generator
from qlib.workflow.task.manage import TaskManager
from qlib.workflow.task.collect import RecorderCollector
from qlib.model.ens.group import RollingGroup
from qlib.model.trainer import TrainerRM


data_handler_config = {
    "start_time": "2008-01-01",
    "end_time": "2020-08-01",
    "fit_start_time": "2008-01-01",
    "fit_end_time": "2014-12-31",
    "instruments": "csi100",
}

dataset_config = {
    "class": "DatasetH",
    "module_path": "qlib.data.dataset",
    "kwargs": {
        "handler": {
            "class": "Alpha158",
            "module_path": "qlib.contrib.data.handler",
            "kwargs": data_handler_config,
        },
        "segments": {
            "train": ("2008-01-01", "2014-12-31"),
            "valid": ("2015-01-01", "2016-12-31"),
            "test": ("2017-01-01", "2020-08-01"),
        },
    },
}

record_config = [
    {
        "class": "SignalRecord",
        "module_path": "qlib.workflow.record_temp",
    },
    {
        "class": "SigAnaRecord",
        "module_path": "qlib.workflow.record_temp",
    },
]

# use lgb
task_lgb_config = {
    "model": {
        "class": "LGBModel",
        "module_path": "qlib.contrib.model.gbdt",
    },
    "dataset": dataset_config,
    "record": record_config,
}

# use xgboost
task_xgboost_config = {
    "model": {
        "class": "XGBModel",
        "module_path": "qlib.contrib.model.xgboost",
    },
    "dataset": dataset_config,
    "record": record_config,
}


class RollingTaskExample:
    def __init__(
        self,
        provider_uri="~/.qlib/qlib_data/cn_data",
        region=REG_CN,
        task_url="mongodb://10.0.0.4:27017/",
        task_db_name="rolling_db",
        experiment_name="rolling_exp",
        task_pool="rolling_task",
        task_config=[task_xgboost_config, task_lgb_config],
        rolling_step=550,
        rolling_type=RollingGen.ROLL_SD,
    ):
        # TaskManager config
        mongo_conf = {
            "task_url": task_url,
            "task_db_name": task_db_name,
        }
        qlib.init(provider_uri=provider_uri, region=region, mongo=mongo_conf)
        self.experiment_name = experiment_name
        self.task_pool = task_pool
        self.task_config = task_config
        self.rolling_gen = RollingGen(step=rolling_step, rtype=rolling_type)

    # Reset all things to the first status, be careful to save important data
    def reset(self):
        print("========== reset ==========")
        TaskManager(task_pool=self.task_pool).remove()
        exp = R.get_exp(experiment_name=self.experiment_name)
        for rid in exp.list_recorders():
            exp.delete_recorder(rid)

    def task_generating(self):
        print("========== task_generating ==========")
        tasks = task_generator(
            tasks=self.task_config,
            generators=self.rolling_gen,  # generate different date segments
        )
        pprint(tasks)
        return tasks

    def task_training(self, tasks):
        print("========== task_training ==========")
        trainer = TrainerRM(self.experiment_name, self.task_pool)
        trainer.train(tasks)

    def task_collecting(self):
        print("========== task_collecting ==========")

        def rec_key(recorder):
            task_config = recorder.load_object("task")
            model_key = task_config["model"]["class"]
            rolling_key = task_config["dataset"]["kwargs"]["segments"]["test"]
            return model_key, rolling_key

        def my_filter(recorder):
            # only choose the results of "LGBModel"
            model_key, rolling_key = rec_key(recorder)
            if model_key == "LGBModel":
                return True
            return False

        collector = RecorderCollector(
            experiment=self.experiment_name,
            process_list=RollingGroup(),
            rec_key_func=rec_key,
            rec_filter_func=my_filter,
        )
        print(collector())

    def main(self):
        self.reset()
        tasks = self.task_generating()
        self.task_training(tasks)
        self.task_collecting()


if __name__ == "__main__":
    ## to see the whole process with your own parameters, use the command below
    # python task_manager_rolling.py main --experiment_name="your_exp_name"
    fire.Fire(RollingTaskExample)