
###########
# Imports #
###########

# Prism infrastructure imports
import prism.task
import prism.target
import prism.decorators

# Prism project imports
import prism_project

# Other imports
import time
import pandas as pd


####################
# Class definition #
####################

class Task01(prism.task.PrismTask):

    # Run
    @prism.decorators.target(
        type=prism.target.PandasCsv,
        loc=prism_project.OUTPUT / 'task01.csv', index=False
    )
    def run(self, tasks, hooks):
        """
        Execute task.

        args:
            tasks: used to reference output of other tasks --> tasks.ref('...')
            hooks: built-in Prism hooks. These include:
            - hooks.dbt_ref --> for getting dbt tasks as a pandas DataFrame
            - hooks.sql     --> for executing sql query using an adapter in profile YML
            - hooks.spark   --> for accessing SparkSession
        returns:
            task output
        """
        start_time = time.time()
        time.sleep(15)
        end_time = time.time()
        time_df = pd.DataFrame({
            'start_time': [start_time],
            'end_time': [end_time]
        })
        return time_df
