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from typing import Any, Tuple, Union

import MySQLdb

def get_trait_csv_sample_data(conn: Any,
                              trait_name: int, phenotype_id: int) -> str:
    """Fetch a trait and return it as a csv string"""
    __query = ("SELECT concat(st.Name, ',', ifnull(pd.value, 'x'), ',', "
               "ifnull(ps.error, 'x'), ',', ifnull(ns.count, 'x')) as 'Data' "
               ",ifnull(ca.Name, 'x') as 'CaseAttr', "
               "ifnull(cxref.value, 'x') as 'Value' "
               "FROM PublishFreeze pf "
               "JOIN PublishXRef px ON px.InbredSetId = pf.InbredSetId "
               "JOIN PublishData pd ON pd.Id = px.DataId "
               "JOIN Strain st ON pd.StrainId = st.Id "
               "LEFT JOIN PublishSE ps ON ps.DataId = pd.Id "
               "AND ps.StrainId = pd.StrainId "
               "LEFT JOIN NStrain ns ON ns.DataId = pd.Id "
               "AND ns.StrainId = pd.StrainId "
               "LEFT JOIN CaseAttributeXRefNew cxref ON "
               "(cxref.InbredSetId = px.InbredSetId AND "
               "cxref.StrainId = st.Id) "
               "LEFT JOIN CaseAttribute ca ON ca.Id = cxref.CaseAttributeId "
               "WHERE px.Id = %s AND px.PhenotypeId = %s ORDER BY st.Name")
    case_attr_columns = set()
    csv_data = {}
    with conn.cursor() as cursor:
        cursor.execute(__query, (trait_name, phenotype_id))
        for data in cursor.fetchall():
            if data[1] == "x":
                csv_data[data[0]] = None
            else:
                sample, case_attr, value = data[0], data[1], data[2]
                if not csv_data.get(sample):
                    csv_data[sample] = {}
                csv_data[sample][case_attr] = None if value == "x" else value
                case_attr_columns.add(case_attr)
        if not case_attr_columns:
            return ("Strain Name,Value,SE,Count\n" +
                    "\n".join(csv_data.keys()))
        else:
            columns = sorted(case_attr_columns)
            csv = ("Strain Name,Value,SE,Count," +
                   ",".join(columns) + "\n")
            for key, value in csv_data.items():
                if not value:
                    csv += (key + (len(case_attr_columns) * ",x") + "\n")
                else:
                    vals = [str(value.get(column, "x")) for column in columns]
                    csv += (key + "," + ",".join(vals) + "\n")
            return csv
    return "No Sample Data Found"


def get_sample_data_ids(conn: Any, publishxref_id: int,
                        phenotype_id: int,
                        strain_name: str) -> Tuple:
    strain_id, publishdata_id, inbredset_id = None, None, None
    with conn.cursor() as cursor:
        cursor.execute("SELECT st.id, pd.Id, pf.InbredSetId "
                       "FROM PublishData pd "
                       "JOIN Strain st ON pd.StrainId = st.Id "
                       "JOIN PublishXRef px ON px.DataId = pd.Id "
                       "JOIN PublishFreeze pf ON pf.InbredSetId "
                       "= px.InbredSetId WHERE px.Id = %s "
                       "AND px.PhenotypeId = %s AND st.Name = %s",
                       (publishxref_id, phenotype_id, strain_name))
        if _result := cursor.fetchone():
            strain_id, publishdata_id, inbredset_id = _result
    return (strain_id, publishdata_id, inbredset_id)


def update_sample_data(conn: Any,  # pylint: disable=[R0913]
                       trait_name: str,
                       strain_name: str,
                       phenotype_id: int,
                       value: Union[int, float, str],
                       error: Union[int, float, str],
                       count: Union[int, str]):
    """Given the right parameters, update sample-data from the relevant
    table."""
    strain_id, data_id, _ = get_sample_data_ids(
        conn=conn, publishxref_id=trait_name,
        phenotype_id=phenotype_id, strain_name=strain_name)

    updated_published_data: int = 0
    updated_se_data: int = 0
    updated_n_strains: int = 0

    with conn.cursor() as cursor:
        # Update the PublishData table
        if value == "x":
            cursor.execute(("DELETE FROM PublishData "
                            "WHERE StrainId = %s AND Id = %s")
                           % (strain_id, data_id))
            updated_published_data = cursor.rowcount
        else:
            cursor.execute(("UPDATE PublishData SET value = %s "
                        "WHERE StrainId = %s AND Id = %s"),
                       (value, strain_id, data_id))
            updated_published_data = cursor.rowcount

            if not updated_published_data:
                cursor.execute(
                    "SELECT * FROM "
                    "PublishData WHERE StrainId = "
                    "%s AND Id = %s" % (strain_id, data_id))
                if not cursor.fetchone():
                    cursor.execute(("INSERT INTO PublishData (Id, StrainId, "
                                    " value) VALUES (%s, %s, %s)") %
                                   (data_id, strain_id, value))
                    updated_published_data = cursor.rowcount

        # Update the PublishSE table
        if error == "x":
            cursor.execute(("DELETE FROM PublishSE "
                            "WHERE StrainId = %s AND DataId = %s") %
                           (strain_id, data_id))
            updated_se_data = cursor.rowcount
        else:
            cursor.execute(("UPDATE PublishSE SET error = %s "
                            "WHERE StrainId = %s AND DataId = %s"),
                           (None if error == "x" else error,
                            strain_id, data_id))
            updated_se_data = cursor.rowcount
            if not updated_se_data:
                cursor.execute(
                        "SELECT * FROM "
                        "PublishSE WHERE StrainId = "
                        "%s AND DataId = %s" % (strain_id, data_id))
                if not cursor.fetchone():
                    cursor.execute(("INSERT INTO PublishSE (StrainId, DataId, "
                                    " error) VALUES (%s, %s, %s)") %
                                   (strain_id, data_id,
                                    None if error == "x" else error))
                    updated_se_data = cursor.rowcount

        # Update the NStrain table
        if count == "x":
            cursor.execute(("DELETE FROM NStrain "
                                "WHERE StrainId = %s AND DataId = %s" %
                                (strain_id, data_id)))
            updated_n_strains = cursor.rowcount
        else:
            cursor.execute(("UPDATE NStrain SET count = %s "
                            "WHERE StrainId = %s AND DataId = %s"),
                           (count, strain_id, data_id))
            updated_n_strains = cursor.rowcount
            if not updated_n_strains:
                cursor.execute(
                        "SELECT * FROM "
                        "NStrain WHERE StrainId = "
                        "%s AND DataId = %s" % (strain_id, data_id))
                if not cursor.fetchone():
                    cursor.execute(("INSERT INTO NStrain "
                                    "(StrainId, DataId, count) "
                                    "VALUES (%s, %s, %s)") %
                                   (strain_id, data_id, count))
                    updated_n_strains = cursor.rowcount
    return (updated_published_data,
            updated_se_data, updated_n_strains)


def delete_sample_data(conn: Any,
                       trait_name: str,
                       data: str,
                       csv_header: str,
                       phenotype_id: int):
    """Given the right parameters, delete sample-data from the relevant
    tables."""
    def __delete_data(conn, table):
        if value and value != "x":
            _map = {
                "PublishData": "StrainId = %s AND Id = %s",
                "PublishSE": "StrainId = %s AND DataId = %s",
                "NStrain": "StrainId = %s AND DataId = %s",
            }
            with conn.cursor() as cursor:
                cursor.execute((f"DELETE FROM {table} "
                                f"WHERE {_map.get(table)}"),
                               (strain_id, data_id))
                return cursor.rowcount
        return 0

    def __delete_case_attribute(conn, strain_id,
                                case_attr, inbredset_id):
        if value != "x":
            with conn.cursor() as cursor:
                cursor.execute(
                    ("DELETE FROM CaseAttributeXRefNew "
                     "WHERE StrainId = "
                     "(SELECT CaseAttributeId FROM "
                     f"CaseAttribute WHERE NAME = %s) "
                     "AND InbredSetId = %s"),
                    (strain_id, case_attr, inbredset_id)
                )
                return cursor.rowcount
        return 0

    strain_id, data_id, inbredset_id = get_sample_data_ids(
        conn=conn, publishxref_id=trait_name,
        phenotype_id=phenotype_id,
        strain_name=strain_name)

    none_case_attrs = {
        "Strain Name": lambda: 0,
        "Value": lambda: __delete_data(conn, "PublishData"),
        "SE": lambda: __delete_data(conn, "PublishSE"),
        "Count": lambda: __delete_data(conn, "NStrain"),
    }
    count = 0

    try:
        for header, value in zip(csv_header.split(","), data.split(",")):
            header = header.strip()
            value = value.strip()
            if header in none_case_attrs:
                count += none_case_attrs.get(header)()
            else:
                count += __delete_case_attribute(
                    conn=conn,
                    strain_id=strain_id,
                    case_attr=header,
                    inbredset_id=inbredset_id)
    except Exception as e:  # pylint: disable=[C0103, W0612]
        conn.rollback()
        raise MySQLdb.Error
    conn.commit()
    return count


def insert_sample_data(conn: Any,  # pylint: disable=[R0913]
                       trait_name: str,
                       data: str,
                       csv_header: str,
                       phenotype_id: int):
    """Given the right parameters, insert sample-data to the relevant table.

    """
    def __insert_data(conn, table, value):
        if value and value != "x":
            _map = {
                "PublishData": "(StrainId, Id, value)",
                "PublishSE": "(StrainId, DataId, error)",
                "NStrain": "(StrainId, DataId, count)",
            }
            _query = (f"INSERT INTO {table} "
                      f"{_map.get(table)} "
                      f"VALUES %s %s %s")
            with conn.cursor() as cursor:
                cursor.execute((f"INSERT INTO {table} "
                                f"{_map.get(table)} "
                                f"VALUES (%s, %s, %s)"),
                               (strain_id, data_id, value))
                return cursor.rowcount
        return 0

    def __insert_case_attribute(conn, strain_id,
                                case_attr, value, inbredset_id):
        if value != "x":
            with conn.cursor() as cursor:
                cursor.execute(
                    (f"INSERT INTO CaseAttributeXRefNew "
                     "StrainId, CaseAttributeId, Value, InbredSetId "
                     "VALUES ("
                     f"{strain_id}, "
                     "(SELECT CaseAttributeId FROM "
                     f"CaseAttribute WHERE NAME = %s), "
                     "%s)" , (strain_id, case_attr, value, inbredset_id)))
                return cursor.rowcount
        return 0

    strain_id, data_id, inbredset_id = get_sample_data_ids(
        conn=conn, publishxref_id=trait_name,
        phenotype_id=phenotype_id,
        strain_name=strain_name)

    none_case_attrs = {
        "Strain Name": lambda _: 0,
        "Value": lambda x: __insert_data(conn, "PublishData", x),
        "SE": lambda x: __insert_data(conn, "PublishSE", x),
        "Count": lambda x: __insert_data(conn, "NStrain", x),
    }

    try:
        count = 0
        for header, value in zip(csv_header.split(","), data.split(",")):
            header = header.strip()
            value = value.strip()
            if header in none_case_attrs:
                count += none_case_attrs.get(header)(value)
            else:
                count += __insert_case_attribute(
                    conn=conn,
                    strain_id=strain_id,
                    case_attr=header,
                    value=value,
                    inbredset_id=inbredset_id)
        return count
    except Exception as e:  # pylint: disable=[C0103, W0612]
        conn.rollback()
        raise MySQLdb.Error