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

from doit import get_var

# TODO: task for folder mapping

# create virtual environment
# def task_setup_venv():
#     """Create virtual environment"""
#     return {
#         'file_dep': ['requirements_dev.txt', 'setup.cfg', 'pyproject.toml'],
#         'actions': ['python3 -m venv venv',
#                     './venv/bin/pip install --upgrade pip wheel',
#                     #'./venv/bin/pip install -Ur unfccc_ghg_data/requirements.txt',
#                     './venv/bin/pip install --upgrade --upgrade-strategy '
#                     'eager -e .[dev]',
#                     'touch venv',],
#         'targets': ['venv'],
#         'verbosity': 2,
#     }


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
    """

    def set_root_path():
        os.environ["UNFCCC_GHG_ROOT_PATH"] = "."

    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": [
            f"python src/unfccc_ghg_data/helper/folder_mapping.py "
            f"--folder={read_config_folder['folder']}"
        ],
        "task_dep": ["set_env"],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


# Tasks for getting submissions and downloading them
def task_update_bur():
    """Update list of BUR submissions"""
    return {
        "targets": ["downloaded_data/UNFCCC/submissions-bur.csv"],
        "actions": [
            'datalad run -m "Fetch BUR submissions" '
            "-o downloaded_data/UNFCCC/submissions-bur.csv "
            "python src/unfccc_ghg_data/unfccc_downloader/fetch_submissions_bur.py"
        ],
        "task_dep": ["set_env"],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_download_bur():
    """Download BUR submissions"""
    return {
        #'file_dep': ['downloaded_data/UNFCCC/submissions-bur.csv'],
        # deactivate file_dep fow now as it will always run fetch submissions
        # before download
        "actions": [
            'datalad run -m "Download BUR submissions" '
            "-i downloaded_data/UNFCCC/submissions-bur.csv "
            "python src/unfccc_ghg_data/unfccc_downloader/download_nonannexI.py --category=BUR",
            "python src/unfccc_ghg_data/helper/folder_mapping.py "
            "--folder=downloaded_data/UNFCCC",
        ],
        "task_dep": ["set_env"],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_update_nc():
    """Update list of NC submissions"""
    return {
        "targets": ["downloaded_data/UNFCCC/submissions-nc.csv"],
        "actions": [
            'datalad run -m "Fetch NC submissions" '
            "-o downloaded_data/UNFCCC/submissions-nc.csv "
            "python src/unfccc_ghg_data/unfccc_downloader/fetch_submissions_nc.py"
        ],
        "task_dep": ["set_env"],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_download_nc():
    """Download NC submissions"""
    return {
        #'file_dep': ['downloaded_data/UNFCCC/submissions-nc.csv'],
        # deactivate file_dep fow now as it will always run fetch submissions
        # before download
        "actions": [
            'datalad run -m "Download NC submissions" '
            "-i downloaded_data/UNFCCC/submissions-nc.csv "
            "python src/unfccc_ghg_data/unfccc_downloader/download_nonannexI.py --category=NC",
            "python src/unfccc_ghg_data/helper/folder_mapping.py "
            "--folder=downloaded_data/UNFCCC",
        ],
        "task_dep": ["set_env"],
        "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"""
    return {
        "targets": [
            f"downloaded_data/UNFCCC/submissions-annexI_{update_aI_config['year']}.csv"
        ],
        "actions": [
            f"datalad run -m 'Fetch AnnexI submissions for {update_aI_config['year']}' "
            "--explicit "
            f"-o downloaded_data/UNFCCC/submissions-annexI_{update_aI_config['year']}.csv "
            f"python src/unfccc_ghg_data/unfccc_downloader/fetch_submissions_annexI.py "
            f"--year={update_aI_config['year']}"
        ],
        "task_dep": ["set_env"],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


def task_download_annexi():
    """Download AnnexI submissions"""
    return {
        #'file_dep': ['downloaded_data/UNFCCC/submissions-nc.csv'],
        # deactivate file_dep fow now as it will always run fetch submissions
        # before download
        "actions": [
            f"datalad run -m 'Download AnnexI submissions for "
            f"{update_aI_config['category']}{update_aI_config['year']}' "
            f"-i downloaded_data/UNFCCC/submissions-annexI_{update_aI_config['year']}.csv "
            f"python src/unfccc_ghg_data/unfccc_downloader/download_annexI.py "
            f"--category={update_aI_config['category']} --year={update_aI_config['year']}",
            "python src/unfccc_ghg_data/helper/folder_mapping.py "
            "--folder=downloaded_data/UNFCCC",
        ],
        "task_dep": ["set_env"],
        "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_btr_config = {
    "round": get_var("round", None),
}


def task_update_btr():
    """Update list of BTR submissions"""
    return {
        "targets": [
            f"downloaded_data/UNFCCC/submissions-BTR{update_btr_config['round']}.csv"
        ],
        "actions": [
            f"datalad run -m 'Fetch Biannial Transparency Report submissions for "
            f"BTR{update_btr_config['round']}' "
            "--explicit "
            f"-o downloaded_data/UNFCCC/submissions-BTR{update_btr_config['round']}.csv "
            f"./venv/bin/python UNFCCC_GHG_data/UNFCCC_downloader/fetch_submissions_btr.py "
            f"--round={update_btr_config['round']}"
        ],
        "task_dep": ["set_env"],
        "verbosity": 2,
        "setup": ["setup_venv"],
    }


def task_download_btr():
    """Download BTR submissions"""
    return {
        #'file_dep': ['downloaded_data/UNFCCC/submissions-nc.csv'],
        # deactivate file_dep fow now as it will always run fetch submissions
        # before download
        "actions": [
            f"datalad run -m 'Download BTR submissions for "
            f"BTR{update_btr_config['round']}' "
            f"-i downloaded_data/UNFCCC/submissions-BTR{update_btr_config['round']}.csv "
            f"./venv/bin/python UNFCCC_GHG_data/UNFCCC_downloader/download_btr.py "
            f"--round={update_btr_config['round']}",
            "./venv/bin/python UNFCCC_GHG_data/helper/folder_mapping.py "
            "--folder=downloaded_data/UNFCCC",
        ],
        "task_dep": ["set_env"],
        "verbosity": 2,
        "setup": ["setup_venv"],
    }


def task_download_ndc():
    """Download NDC submissions"""
    return {
        "actions": [
            'datalad run -m "Download NDC submissions" '
            "python src/unfccc_ghg_data/unfccc_downloader/download_ndc.py",
            "python src/unfccc_ghg_data/helper/folder_mapping.py "
            "--folder=downloaded_data/UNFCCC",
        ],
        "task_dep": ["set_env"],
        "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)"""
    return {
        "actions": [
            f"python src/unfccc_ghg_data/unfccc_reader/read_UNFCCC_submission.py "
            f"--country={read_config['country']} --submission={read_config['submission']}",
            "python src/unfccc_ghg_data/helper/folder_mapping.py "
            "--folder=extracted_data/UNFCCC",
        ],
        "task_dep": ["set_env"],
        "verbosity": 2,
        "setup": ["in_venv"],
    }


# read UNFCCC 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"""
    actions = [
        f"python src/unfccc_ghg_data/unfccc_crf_reader"
        f"/read_unfccc_crf_submission_datalad.py "
        f"--country={read_config_crf['country']} "
        f"--submission_year={read_config_crf['submission_year']} "
        f"--submission_date={read_config_crf['submission_date']} ",
        "python src/unfccc_ghg_data/helper/folder_mapping.py "
        "--folder=extracted_data/UNFCCC",
    ]
    if read_config_crf["re_read"] == "True":
        actions[0] = actions[0] + " --re_read"
    return {
        "actions": actions,
        "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"],
    }