"""
Define the tasks for UNFCCC data repository
"""
import os
import sys

import datalad.api
from doit import get_var

root_path = "."
os.environ["UNFCCC_GHG_ROOT_PATH"] = root_path

from unfccc_ghg_data.unfccc_crf_reader.unfccc_crf_reader_prod import (  # noqa: E402
    read_crf_for_country_datalad,
)


def set_root_path():
    """Set the root folder for the repository"""
    os.environ["UNFCCC_GHG_ROOT_PATH"] = root_path


def map_folders(parent_folder):
    """
    Create or update the folder mapping in the given folder

    Internal function
    """
    datalad.api.run(
        cmd="python3 src/unfccc_ghg_data/helper/folder_mapping.py "
        f"--folder={parent_folder}",
        dataset=root_path,
        message=f"Update folder mapping for {parent_folder}",
        outputs=f"{parent_folder}/folder_mapping.json",
        dry_run=None,
        explicit=True,
    )


def task_in_venv():
    """
    Check if code run from virtual environment and throw an error is not.

    Returns
    -------
    Nothing

    """

    def in_venv():
        if sys.prefix == sys.base_prefix:
            raise ValueError(  # noqa: TRY003
                "You need to run the code from the virtual environment."
            )

    return {
        "actions": [in_venv],
    }


# set UNFCCC_GHG_ROOT_PATH environment variable
def task_set_env():
    """
    Set the environment variable for the module so data is stored in the correct folders
    """
    return {
        "actions": [set_root_path],
    }


# Task to create the mapping files which map folder names to ISO 3-letter country codes
read_config_folder = {
    "folder": get_var("folder", None),
}


def task_map_folders():
    """
    Create or update the folder mapping in the given folder
    """
    return {
        "actions": [(map_folders, [read_config_folder["folder"]])],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


# Tasks for getting submissions and downloading them
def task_update_bur():
    """Update list of BUR submissions"""

    def fetch_bur():
        datalad.api.run(
            cmd="python3 src/unfccc_ghg_data/unfccc_downloader/"
            "fetch_submissions_bur.py",
            dataset=root_path,
            message="Fetch BUR submissions",
            outputs="downloaded_data/UNFCCC/submissions-bur.csv",
            dry_run=None,
            explicit=True,
        )

    return {
        "targets": ["downloaded_data/UNFCCC/submissions-bur.csv"],
        "actions": [
            (fetch_bur,),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_download_bur():
    """Download BUR submissions"""

    def download_bur():
        (
            datalad.api.run(
                cmd="python3 src/unfccc_ghg_data/unfccc_downloader/"
                "download_nonannexI.py --category=BUR",
                dataset=root_path,
                message="Download BUR submissions",
                inputs="downloaded_data/UNFCCC/submissions-bur.csv",
                dry_run=None,
                explicit=False,
            ),
        )

    return {
        #'file_dep': ['downloaded_data/UNFCCC/submissions-bur.csv'],
        # deactivate file_dep fow now as it will always run fetch submissions
        # before download
        "actions": [
            (download_bur,),
            (map_folders, ["downloaded_data/UNFCCC"]),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_update_nc():
    """Update list of NC submissions"""

    def fetch_nc():
        datalad.api.run(
            cmd="python3 src/unfccc_ghg_data/unfccc_downloader/"
            "fetch_submissions_nc.py",
            dataset=root_path,
            message="Fetch NC submissions",
            outputs="downloaded_data/UNFCCC/submissions-nc.csv",
            dry_run=None,
            explicit=True,
        )

    return {
        "targets": ["downloaded_data/UNFCCC/submissions-nc.csv"],
        "actions": [
            (fetch_nc,),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_download_nc():
    """Download BUR submissions"""

    def download_nc():
        (
            datalad.api.run(
                cmd="python3 src/unfccc_ghg_data/unfccc_downloader/"
                "download_nonannexI.py --category=NC",
                dataset=root_path,
                message="Download NC submissions",
                inputs="downloaded_data/UNFCCC/submissions-nc.csv",
                dry_run=None,
                explicit=False,
            ),
        )

    return {
        #'file_dep': ['downloaded_data/UNFCCC/submissions-bur.csv'],
        # deactivate file_dep fow now as it will always run fetch submissions
        # before download
        "actions": [
            (download_nc,),
            (map_folders, ["downloaded_data/UNFCCC"]),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


# annexI data: one update call for all data types (as they are on one page)
# but for each year separately.
# downloading is per year and
update_aI_config = {
    "year": get_var("year", None),
    "category": get_var("category", None),
}


def task_update_annexi():
    """Update list of AnnexI submissions"""

    def fetch_annexi():
        (
            datalad.api.run(
                cmd="python src/unfccc_ghg_data/unfccc_downloader/"
                "fetch_submissions_annexI.py "
                f"--year={update_aI_config['year']}",
                dataset=root_path,
                message=f"Fetch AnnexI submissions for {update_aI_config['year']}",
                outputs=f"downloaded_data/UNFCCC/submissions-annexI_"
                f"{update_aI_config['year']}.csv",
                dry_run=None,
                explicit=True,
            ),
        )

    return {
        "targets": [
            f"downloaded_data/UNFCCC/submissions-annexI_{update_aI_config['year']}.csv"
        ],
        "actions": [
            (fetch_annexi,),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_download_annexi():
    """Download AnnexI submissions"""

    def download_annexi():
        (
            datalad.api.run(
                cmd="python src/unfccc_ghg_data/unfccc_downloader/download_annexI.py "
                f"--category={update_aI_config['category']} "
                f"--year={update_aI_config['year']}",
                dataset=root_path,
                message=f"Download AnnexI submissions for "
                f"{update_aI_config['category']}"
                f"{update_aI_config['year']}",
                inputs=f"downloaded_data/UNFCCC/submissions-annexI_"
                f"{update_aI_config['year']}.csv",
                dry_run=None,
                explicit=False,
            ),
        )

    return {
        # 'file_dep': [f"downloaded_data/UNFCCC/submissions-annex1_"
        #              f"{update_aI_config['year']}.csv"],
        # deactivate file_dep fow now as it will always run fetch submissions
        # before download
        "actions": [
            (download_annexi,),
            (map_folders, ["downloaded_data/UNFCCC"]),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


# BTR data: one update call for all data types (as they are on one page)
# but for each submission round separately.
# downloading is per submission round
update_btr_config = {
    "round": get_var("round", None),
}


def task_update_btr():
    """Update list of BTR submissions"""

    def fetch_btr():
        (
            datalad.api.run(
                cmd="python src/unfccc_ghg_data/unfccc_downloader/"
                "fetch_submissions_btr.py "
                f"--round={update_btr_config['round']}",
                dataset=root_path,
                message=f"Fetch Biannial Transparency Report submissions for "
                f"BTR{update_btr_config['round']}",
                outputs=f"downloaded_data/UNFCCC/submissions-BTR"
                f"{update_btr_config['round']}.csv",
                dry_run=None,
                explicit=True,
            ),
        )

    return {
        "targets": [
            f"downloaded_data/UNFCCC/submissions-BTR{update_btr_config['round']}.csv"
        ],
        "actions": [
            (fetch_btr,),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_download_btr():
    """Download BTR submissions"""

    def download_btr():
        (
            datalad.api.run(
                cmd="python src/unfccc_ghg_data/unfccc_downloader/download_btr.py "
                f"--round={update_btr_config['round']}",
                dataset=root_path,
                message="Download BTR submissions for "
                f"BTR{update_btr_config['round']}",
                inputs=f"downloaded_data/UNFCCC/submissions-BTR"
                f"{update_btr_config['round']}.csv",
                dry_run=None,
                explicit=False,
            ),
        )

    return {
        # 'file_dep': [f"downloaded_data/UNFCCC/submissions-btr.csv "
        #              f"{update_btr_config['round']}.csv"],
        # deactivate file_dep fow now as it will always run fetch submissions
        # before download
        "actions": [
            (download_btr,),
            (map_folders, ["downloaded_data/UNFCCC"]),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_download_ndc():
    """Download NDC submissions"""

    def download_ndc():
        (
            datalad.api.run(
                cmd="src/unfccc_ghg_data/unfccc_downloader/download_ndc.py",
                dataset=root_path,
                message="Download NDC submissions",
                inputs=None,
                dry_run=None,
                explicit=False,
            ),
        )

    return {
        "actions": [
            (download_ndc,),
            (map_folders, ["downloaded_data/UNFCCC"]),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


# read UNFCCC submissions.
# datalad run is called from within the read_UNFCCC_submission.py script
read_config = {
    "country": get_var("country", None),
    "submission": get_var("submission", None),
}


# TODO: make individual task for non-UNFCCC submissions
def task_read_unfccc_submission():
    """Read submission for a country (if code exists) (not for CRF)

    Datalad is called from `read_UNFCCC_submission`, so we can just call this script
    here.

    TODO: check if it makes sense to convert script to function
    """
    return {
        "actions": [
            f"python src/unfccc_ghg_data/unfccc_reader/read_UNFCCC_submission.py "
            f"--country={read_config['country']} "
            f"--submission={read_config['submission']}",
            (map_folders, ["extracted_data/UNFCCC"]),
        ],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


# read UNFCCC CRF submissions.
# datalad run is called from within the read_UNFCCC_submission.py script
read_config_crf = {
    "country": get_var("country", None),
    "submission_year": get_var("submission_year", None),
    "submission_date": get_var("submission_date", None),
    "re_read": get_var("re_read", False),
    "countries": get_var("countries", None),
    "data_year": get_var("data_year", None),
    "totest": get_var("totest", None),
}


def task_read_unfccc_crf_submission():
    """Read CRF submission for a country"""

    def read_CRF():
        if read_config_crf["re_read"] == "True":
            re_read = True
        else:
            re_read = False
        read_crf_for_country_datalad(
            read_config_crf["country"],
            submission_year=int(read_config_crf["submission_year"]),
            submission_date=read_config_crf["submission_date"],
            re_read=re_read,
        )

    return {
        "actions": [
            (read_CRF,),
            (map_folders, ["extracted_data/UNFCCC"]),
        ],
        "task_dep": ["set_env"],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


#
# def task_read_new_unfccc_crf_for_year():
#     """
#     Read CRF submission for all countries for given submission year.
#
#     By default only reads data not present yet. Only reads the latest updated
#     submission for each country.
#     """
#     actions = [
#         f"python src/unfccc_ghg_data/unfccc_crf_reader"
#         f"/read_new_unfccc_crf_for_year_datalad.py "
#         f"--submission_year={read_config_crf['submission_year']} ",
#         "python src/unfccc_ghg_data/helper/folder_mapping.py "
#         "--folder=extracted_data/UNFCCC",
#     ]
#     # specifying countries is currently disabled duo to problems with command line
#     # list arguments
#     # if read_config_crf["countries"] is not None:
#     #        actions[0] = actions[0] + f"--countries={read_config_crf['countries']} "
#     if read_config_crf["re_read"] == "True":
#         actions[0] = actions[0] + " --re_read"
#     return {
#         #'basename': "Read_CRF_year",
#         "actions": actions,
#         "task_dep": ["set_env"],
#         "verbosity": 2,
#         "setup": ["in_venv"],
#     }
#
#
# def task_test_read_unfccc_crf_for_year():
#     """
#     Test CRF reading.
#
#     Test CRF with a single year only for speed and logging to extend specifications
#     if necessary.
#     """
#     actions = [
#         f"python "
#         f"src/unfccc_ghg_data/unfccc_crf_reader"
#         f"/test_read_unfccc_crf_for_year.py "
#         f"--submission_year={read_config_crf['submission_year']} "
#         f"--country={read_config_crf['country']} "
#     ]
#     if read_config_crf["totest"] == "True":
#         actions[0] = actions[0] + " --totest"
#
#     if read_config_crf["data_year"] is not None:
#         actions[0] = actions[0] + f"--data_year={read_config_crf['data_year']} "
#     return {
#         #'basename': "Read_CRF_year",
#         "actions": actions,
#         "task_dep": ["set_env"],
#         "verbosity": 2,
#         "setup": ["in_venv"],
#     }
#
#
# def task_compile_raw_unfccc_crf_for_year():
#     """
#     Collect all latest CRF submissions for a given year
#
#     Reads the latest data fromt he extracted data folder for each country.
#     Notifies the user if new data are available in the downloaded_data folder
#     which have not yet been read.
#
#     Data are saved in the datasets/UNFCCC/CRFYYYY folder.
#     """
#     actions = [
#         f"python "
#         f"src/unfccc_ghg_data/unfccc_crf_reader/crf_raw_for_year.py "
#         f"--submission_year={read_config_crf['submission_year']} "
#     ]
#     return {
#         "actions": actions,
#         "task_dep": ["set_env"],
#         "verbosity": 2,
#         "setup": ["in_venv"],
#     }
#
#
# # tasks for DI reader
# # datalad run is called from within the read_unfccc_di_for_country.py script
# read_config_di = {
#     "country": get_var("country", None),
#     "date": get_var("date", None),
#     "annexI": get_var("annexI", False),
#     # "countries": get_var('countries', None),
# }
#
#
# def task_read_unfccc_di_for_country():
#     """Read DI data for a country"""
#     actions = [
#         f"python "
#         f"src/unfccc_ghg_data/unfccc_di_reader/read_unfccc_di_for_country_datalad.py "
#         f"--country={read_config_di['country']}",
#         "python src/unfccc_ghg_data/helper/folder_mapping.py "
#         "--folder=extracted_data/UNFCCC",
#     ]
#     return {
#         "actions": actions,
#         "task_dep": ["set_env"],
#         "verbosity": 2,
#         "setup": ["in_venv"],
#     }
#
#
# def task_process_unfccc_di_for_country():
#     """Process DI data for a country"""
#     actions = [
#         f"python "
#         f"src/unfccc_ghg_data/unfccc_di_reader/process_unfccc_di_for_country_datalad"
#         f".py "
#         f"--country={read_config_di['country']} --date={read_config_di['date']}",
#         "python src/unfccc_ghg_data/helper/folder_mapping.py "
#         "--folder=extracted_data/UNFCCC",
#     ]
#     return {
#         "actions": actions,
#         "task_dep": ["set_env"],
#         "verbosity": 2,
#         "setup": ["in_venv"],
#     }
#
#
# def task_read_unfccc_di_for_country_group():
#     """Read DI data for a country group"""
#     actions = [
#         "python "
#         "src/unfccc_ghg_data/unfccc_di_reader/read_unfccc_di_for_country_group_datalad"
#         ".py",
#         "python src/unfccc_ghg_data/helper/folder_mapping.py "
#         "--folder=extracted_data/UNFCCC",
#     ]
#     if read_config_di["annexI"] == "True":
#         actions[0] = actions[0] + " --annexI"
#
#     return {
#         "actions": actions,
#         "task_dep": ["set_env"],
#         "verbosity": 2,
#         "setup": ["in_venv"],
#     }
#
#
# def task_process_unfccc_di_for_country_group():
#     """Process DI data for a country group"""
#     actions = [
#         "python "
#         "src/unfccc_ghg_data/unfccc_di_reader"
#         "/process_unfccc_di_for_country_group_datalad"
#         ".py",
#     ]
#     if read_config_di["annexI"] == "True":
#         actions[0] = actions[0] + " --annexI"
#     if read_config_di["date"] is not None:
#         actions[0] = actions[0] + f" --date={read_config_di['date']}"
#
#     return {
#         "actions": actions,
#         "task_dep": ["set_env"],
#         "verbosity": 2,
#         "setup": ["in_venv"],
#     }
#
#
# # general tasks
# def task_country_info():
#     """
#     Print information on submissions and datasets available for given country
#     """
#     return {
#         "actions": [
#             f"python src/unfccc_ghg_data/helper/country_info.py "
#             f"--country={read_config['country']}"
#         ],
#         "task_dep": ["set_env"],
#         "verbosity": 2,
#         "setup": ["in_venv"],
#     }