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###########################################################################################################################
"""
AUTHOR - M.Veerendra Kumar
EMP-ID - 2009927
SCRIPT - PPM delete script
DESCRIPTION - The below script deletes ppm table records dynamically upon passing the values
"""
############################################################################################################################


import pandas as pd
import mysql.connector
import json
from base64 import b64decode as base_b64decode
import logging
import datetime
import os
from sqlalchemy import create_engine as sqlalchemy_create_engine
from pandas import read_sql as pd_read_sql
import sys

releaseId = '275.2'
releaseType = 'DEPLOYED'
replicationTarget = 'SOURCE'
catalogId = ''
opId = 'HOB'
buId = 'DEFAULT'
replicationJobId = 'REP_990_234'
json_file_path = "/app/scripts/PPM_Release_Management/Product_Catalog_ETL/config/ppm_reply.json"
sql_log_file = f"/app/scripts/PPM_Release_Management/Product_Catalog_ETL/logs/{replicationJobId}ppm_reply.sql"
log_file = f'/app/scripts/PPM_Release_Management/Product_Catalog_ETL/logs/{replicationJobId}ppm_reply.log'
# sql_log_file = os.get_path("PPM_PC_LOG") + "/" + replicationJobId + "_ppm_pc_replication_delete.sql"
# json_file_path = os.get_path("PPM_PC_CONFIG") + "/ppm_pc_replication.json"
# log_file = os.get_path("PPM_PC_LOG") + "/" + replicationJobId + "_ppm_pc_replication_delete.log"
release_type = releaseType.casefold()
STATUS = replicationTarget
STATUS_MESSAGE = "success"

# Set up logging
logging.basicConfig(
    filename=log_file,
    level=logging.INFO,
    format='%(asctime)s - %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S'
)
query_count = 0

# Open SQL log file for writing
sql_log_file = open(sql_log_file, "w")


# Function to write SQL query to the log file
def write_sql(query_info):
    sql_log_file.write(query_info)
    sql_log_file.write('\n')

#Utility
def process_release_table(eprm_table_name, schema_tar, releaseId, opId, buId,query_count):
    query = f"SELECT COUNT(*) FROM {schema_tar}.{eprm_table_name} WHERE release_id='{releaseId}' AND op_id='{opId}' AND bu_id='{buId}'"
    try:
        cursor_tar.execute(query)
        result = cursor_tar.fetchone()
        query_info = f"-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ STATUS|{replicationTarget}| TABLE| {eprm_table_name}\n"
        query_info += f"-- #Query: Result:{result[0]}\n"
        query_count += 1
        query_info += query + ";\n"
        write_sql(query_info)
        print(f"Count for {eprm_table_name}: {result[0]} (release)")
        logging.info(f"Count for {eprm_table_name}: {result[0]} (release)")
    except mysql.connector.Error as err:
        print(f"Error occurred while executing the query: {query}: {err}")
        logging.info(f"Error occurred while executing the query: {query}: {err}")
#Utility
def process_audit_table(eprm_table_name, eprm_table_col_pk, schema_tar, releaseId, opId, buId,query_count):
    query = f"SELECT COUNT(*) FROM {schema_tar}.{eprm_table_name} WHERE ({eprm_table_col_pk}) IN (SELECT entity_ref_nbr FROM {schema_tar}.release_entity_inst_map WHERE release_id='{releaseId}' AND op_id='{opId}' AND bu_id='{buId}')"
    try:
        cursor_tar.execute(query)
        result = cursor_tar.fetchone()
        query_info = f"-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ STATUS|{replicationTarget}| TABLE| {eprm_table_name}\n"
        query_info += f"-- #Query: Result:{result[0]}\n"
        query_count += 1
        query_info += query + ";\n"
        write_sql(query_info)
        print(f"Count for {eprm_table_name}: {result[0]} (audit)")
        logging.info(f"Count for {eprm_table_name}: {result[0]} (audit)")
    except mysql.connector.Error as err:
        print(f"Error occurred while executing the query: {query}: {err}")
        logging.info(f"Error occurred while executing the query: {query}: {err}")


try:
    # Function to establish a database connection
    def connect_to_database(json_data, replicationTarget):
        try:
            encrypt = json_data.get(replicationTarget, {}).get('ENCRYPT')
            host = json_data.get(replicationTarget, {}).get('DB_HOST')
            port = json_data.get(replicationTarget, {}).get('DB_PORT')
            user = json_data.get(replicationTarget, {}).get('DB_USER')
            db_type = json_data.get(replicationTarget, {}).get('DB_TYPE')
            schema = json_data.get(replicationTarget, {}).get('DB_SCHEMA')
            if encrypt == 'Y':
                password = b64decode(json_data.get(replicationTarget, {}).get('DB_PASSWORD')).decode('utf-8')
            else:
                password = json_data.get(replicationTarget, {}).get('DB_PASSWORD')

            if db_type == 'MYSQL':
                cnx = mysql.connector.connect(user=user, password=password, host=host, port=port)
                cursor = cnx.cursor()
                logging.info(f"Connected to MySQL database server {replicationTarget}: {host}:{port}")

            elif db_type == 'ORACLE':
                import oracledb
                oracle_mode = oracledb.is_thin_mode()
                print("Oracle mode: %s" % oracle_mode)

                if oracle_mode:
                    oracledb.init_oracle_client()
                    print("Enabled python-oracledb Thick mode")
                else:
                    print("Default python-oracledb Thick mode")

                cnx_text = ('oracle://%s:%s@%s:%s/?service_name=%s' % (user, password, host, port, schema))
                cnx = create_engine(cnx_text, encoding="utf8").raw_connection()
                cursor = cnx.cursor()

            return cnx, cursor, schema

        except Exception as dbexp:
            print("Error - {} . Line No - {} ".format(str(dbexp), str(sys.exc_info()[-1].tb_lineno)))


    try:
        # Read JSON data from file
        with open(json_file_path) as json_file:
            json_data = json.load(json_file)
    except FileNotFoundError:
        print("File not found: " + json_file_path)

    try:
        # Connect to PPM_PC database
        conn_ppm, cursor_ppm, schema_ppm = connect_to_database(json_data, 'PPM_PC')

        # Fetch data from the etl_ppm_replication_master table
        primary_query = f"SELECT * FROM {schema_ppm}.etl_ppm_replication_master"

        df = pd_read_sql(primary_query, con=conn_ppm)
        columns = df.columns.tolist()
        rows = df.values.tolist()
        if len(rows) == 0:
            STATUS = "Error"
            STATUS_MESSAGE = "No records present in etl_ppm_replication_master table"

        # replicationTarget
        connection_tar, cursor_tar, schema_tar = connect_to_database(json_data, replicationTarget)
        # cursor_tar = connection_tar.cursor()
    except Exception as e:
        print("An Error occured:", str(e))
    replaced_string = ""

    try:
        # Deleting records if releaseType is deployed or cancelled for MASTER-CHILD,AUDIT-CHILD,MASTER,AUDIT,RELEASE
        if release_type == 'deployed' or release_type == 'cancelled':
            logging.info(f"processing - {releaseType}")
            order = ['MASTER-CHILD', 'AUDIT-CHILD', 'MASTER', 'AUDIT', 'RELEASE']
            logging.info("order of execution - 'MASTER-CHILD', 'AUDIT-CHILD', 'MASTER', 'AUDIT', 'RELEASE'")
            filtered_df = df.loc[
                df['eprm_catalog'].isin(['PC', 'RELEASE']) & (df['eprm_enabled_flg'].isin(['Y'])) & df[
                    'eprm_table_type'].isin(
                    order)].copy()
            # filtered_df.sort_values(by='eprm_seq_nbr', ascending=True, inplace=True)
            filtered_df['eprm_table_type'] = pd.Categorical(filtered_df['eprm_table_type'], categories=order,
                                                            ordered=True)
            filtered_df.sort_values(by=['eprm_table_type', 'eprm_seq_nbr'], ascending=[True, True], inplace=True)

            for _, row in filtered_df.iterrows():
                eprm_table_name = row['eprm_table_name']
                eprm_join_cols_entity = row['eprm_join_cols_entity']
                eprm_join_cols_reim = row['eprm_join_cols_reim']
                eprm_table_alias = row['eprm_table_alias']
                eprm_table_type = row['eprm_table_type']
                eprm_parent_table_name = row['eprm_parent_table_name']
                eprm_seq_nbr = row['eprm_seq_nbr']
                # df = df.sort_values('eprm_seq_nbr', ascending=True)

                if eprm_table_type == 'AUDIT':
                    eprm_table_col_pk = row['eprm_table_col_pk']
                    process_audit_table(eprm_table_name, eprm_table_col_pk, schema_tar, releaseId, opId, buId,query_count)
                if eprm_table_type == 'RELEASE':
                    process_release_table(eprm_table_name, schema_tar, releaseId, opId, buId,query_count )
                elif eprm_table_type == 'MASTER':
                    clause_removed_reim_join = eprm_join_cols_reim.replace(" AND", "").replace("=", "")
                    remove_string = [eprm_table_alias + "." + v for v in eprm_join_cols_entity.split(",")]

                    if eprm_table_alias + ".version" not in remove_string and eprm_table_alias + ".version" in eprm_join_cols_reim:
                        remove_string = remove_string + [eprm_table_alias + ".version"]
                        eprm_join_cols_entity = eprm_join_cols_entity + ", version"

                    reim_select_cols = clause_removed_reim_join
                    for v in remove_string:
                        reim_select_cols = reim_select_cols.replace(v, "").replace("reim.", "")
                    reim_select_cols = reim_select_cols.replace(" ", ",")

                    if eprm_table_alias + ".version" in remove_string and "reim.version" not in eprm_join_cols_reim:
                        reim_select_cols = reim_select_cols + ",version"

                    split_parts = reim_select_cols.split(',')
                    replaced_parts = []
                    for part in split_parts:
                        dot_index = part.find('.')
                        if dot_index != -1:
                            replaced_part = part[dot_index + 1:]
                            replaced_parts.append(replaced_part)
                        else:
                            replaced_parts.append(part)

                    replaced_string = ','.join(replaced_parts)

                    secondary_query = f"SELECT COUNT(*) FROM {schema_tar}.{eprm_table_name} WHERE (" + eprm_join_cols_entity + ") IN (SELECT " + replaced_string + f" FROM {schema_tar}.release_entity_inst_map WHERE release_id='" + releaseId + "' AND op_id='" + opId + "' AND bu_id='" + buId + "')"

                    try:
                        logging.info(f"processing {eprm_table_type}")
                        cursor_tar.execute(secondary_query)
                        result = cursor_tar.fetchone()
                        query_info = f"-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ STATUS|{replicationTarget}| TABLE| {eprm_table_name}\n"
                        query_info += f"-- #Query: Result:{result[0]}\n"
                        query_info += secondary_query + ";\n"
                        query_count += 1
                        write_sql(query_info)
                        logging.info(f"Count for {eprm_table_name}: {result[0]} (master)")
                        print(f"Count for {eprm_table_name}: {result[0]} (master) {eprm_seq_nbr}")
                    except mysql.connector.Error as err:
                        print("Error - {} . Line No - {} ".format(str(exp), str(sys.exc_info()[-1].tb_lineno)))
                        print(f"Error occurred while executing the query:{secondary_query}: {err}")
                        logging.info(f"Error occurred while executing the query:{secondary_query}: {err}")
                elif eprm_table_type == 'MASTER-CHILD':
                    qry = f"select * from {schema_tar}.etl_ppm_replication_master WHERE eprm_table_name=" + "'" + eprm_parent_table_name + "'"
                    cursor_tar.execute(qry)
                    rows = cursor_tar.fetchall()
                    columns = [desc[0] for desc in cursor_tar.description]
                    df_child = pd.DataFrame(rows, columns=columns)
                    filtered_df_child = df_child[
                        df_child['eprm_catalog'].isin(['PC']) & (df_child['eprm_enabled_flg'] == 'Y') & df_child[
                            'eprm_table_type'].isin(
                            ['MASTER'])]
                    for _, row in filtered_df_child.iterrows():
                        eprm_table_name_child = row['eprm_table_name']
                        eprm_join_cols_entity_child = row['eprm_join_cols_entity']
                        eprm_join_cols_reim_child = row['eprm_join_cols_reim']
                        eprm_table_type_child = row['eprm_table_type']
                        if eprm_table_type_child == 'MASTER':
                            split_conditions_reim = eprm_join_cols_reim.split('AND')
                            where_clause_reim = []
                            for condition in split_conditions_reim:
                                condition = condition.split('=')[1]
                                condition = condition.split('.')[1]
                                where_clause_reim.append(condition.strip())
                            where_clause_reim = ','.join(where_clause_reim)

                            values_child = eprm_join_cols_entity_child.split('=')
                            column_names_child = [value.split('.')[-1].strip() for value in values_child]
                            where_clause_child = ', '.join(column_names_child)

                            split_conditions = eprm_join_cols_reim_child.split(' AND ')
                            result = [condition.split('=')[0].split('.')[-1] for condition in split_conditions]

                            where_clause = ', '.join(result)

                            final_query = f"SELECT COUNT(*) FROM {schema_tar}.{eprm_table_name} WHERE ({where_clause_reim}) IN (select {where_clause_reim} from {schema_tar}.{eprm_table_name_child} where ({where_clause_child}) IN (select " + where_clause + f" FROM {schema_tar}.RELEASE_ENTITY_INST_MAP WHERE release_id='" + releaseId + "' AND op_id='" + opId + "' AND bu_id='" + buId + "'))"
                            try:
                                cursor_tar.execute(final_query)
                                logging.info(f"processing - {eprm_table_type}")
                                result = cursor_tar.fetchone()
                                query_info = f"-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ STATUS|{replicationTarget}| TABLE| {eprm_table_name}\n"
                                query_info += f"-- #Query: Result:{result[0]}\n"
                                query_count += 1
                                query_info += final_query + ";\n"
                                write_sql(query_info)
                                logging.info(f"Count for {eprm_table_name}: {result[0]}")
                                print(
                                    f"Count for {eprm_table_name}: {result[0]}" + " ---------------------MASTER-AUDIT------------------")
                            except mysql.connector.Error as err:
                                print("Error - {} . Line No - {} ".format(str(exp), str(sys.exc_info()[-1].tb_lineno)))
                                print(f"Error occurred while executing the query:{final_query}: {err}")
                                logging.info(f"Error occurred while executing the query:{final_query}: {err}")
                elif eprm_table_type == 'AUDIT-CHILD':
                    qry = f"select * from {schema_tar}.etl_ppm_replication_master WHERE eprm_table_name=" + "'" + eprm_parent_table_name + "'"
                    cursor_tar.execute(qry)
                    rows = cursor_tar.fetchall()
                    columns = [desc[0] for desc in cursor_tar.description]
                    df_child = pd.DataFrame(rows, columns=columns)
                    filtered_df_child = df_child[
                        df_child['eprm_catalog'].isin(['PC']) & (df_child['eprm_enabled_flg'] == 'Y') & df_child[
                            'eprm_table_type'].isin(
                            ['AUDIT'])]
                    for _, row in filtered_df_child.iterrows():
                        eprm_table_name_child = row['eprm_table_name']
                        eprm_join_cols_entity_child = row['eprm_join_cols_entity']
                        eprm_join_cols_reim_child = row['eprm_join_cols_reim']
                        eprm_table_type_child = row['eprm_table_type']
                        if eprm_table_type_child == 'AUDIT':
                            split_conditions_reim = eprm_join_cols_reim.split('AND')
                            where_clause_reim = []
                            for condition in split_conditions_reim:
                                condition = condition.split('=')[1]
                                condition = condition.split('.')[1]
                                where_clause_reim.append(condition.strip())
                            where_clause_reim = ','.join(where_clause_reim)

                            values_child = eprm_join_cols_entity_child.split('=')
                            column_names_child = [value.split('.')[-1].strip() for value in values_child]
                            where_clause_child = ', '.join(column_names_child)

                            split_conditions = eprm_join_cols_reim_child.split(' AND ')
                            result = [condition.split('=')[0].split('.')[-1] for condition in split_conditions]

                            where_clause = ', '.join(result)

                            final_query = f"SELECT COUNT(*) FROM {schema_tar}.{eprm_table_name} WHERE ({where_clause_reim}) IN (select {where_clause_reim} from {schema_tar}.{eprm_table_name_child} where ({where_clause_child}) IN (select " + where_clause + f" FROM {schema_tar}.RELEASE_ENTITY_INST_MAP WHERE release_id='" + releaseId + "' AND op_id='" + opId + "' AND bu_id='" + buId + "'))"
                            try:
                                logging.info(f"processing - {eprm_table_type}")
                                cursor_tar.execute(final_query)
                                result = cursor_tar.fetchone()
                                query_info = f"-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ STATUS|{replicationTarget}| TABLE| {eprm_table_name}\n"
                                query_info += f"-- #Query: Result:{result[0]}\n"
                                query_count += 1
                                query_info += final_query + ";\n"
                                write_sql(query_info)
                                print(
                                    f"Count for {eprm_table_name}: {result[0]}" + " ---------------------AUDIT-CHILD------------------")
                                logging.info(f"Count for {eprm_table_name}: {result[0]}")
                            except mysql.connector.Error as err:
                                print("Error - {} . Line No - {} ".format(str(exp), str(sys.exc_info()[-1].tb_lineno)))

                                print(f"Error occurred while executing the query:{final_query}: {err}")
                                logging.info(f"Error occurred while executing the query:{final_query}: {err}")



        elif release_type == 'testing' or release_type == 'inprogress':
            logging.info(f"{releaseType}")
            filtered_df = df[df['eprm_catalog'].isin(['PC', 'RELEASE']) & (df['eprm_enabled_flg'].isin(['Y'])) & df[
                'eprm_table_type'].isin(
                ['AUDIT', 'RELEASE'])]
            filtered_df = filtered_df.sort_values('eprm_table_type')
            df = df.sort_values('eprm_seq_nbr', ascending=False)
            for _, row in filtered_df.iterrows():
                eprm_table_name = row['eprm_table_name']
                eprm_table_col_pk = row['eprm_table_col_pk']
                eprm_table_type = row['eprm_table_type']
                eprm_seq_nbr = row['eprm_seq_nbr']

                if eprm_table_type == 'RELEASE':
                    eprm_table_name = row['eprm_table_name']
                    process_release_table(eprm_table_name, schema_tar, releaseId, opId, buId,query_count )

                if eprm_table_type == 'AUDIT':
                    eprm_table_col_pk = row['eprm_table_col_pk']
                    process_audit_table(eprm_table_name, eprm_table_col_pk, schema_tar, releaseId, opId, buId,query_count)


        else:
            print("Release Type is not defined")
            logging.info("Release Type is not defined")
        # PC_EXT
        replicationTarget_EXT = replicationTarget + '_EXT'
        connection_ext, cursor_ext, schema_ext = connect_to_database(json_data, replicationTarget_EXT)
        cursor_ext = connection_ext.cursor()

        filtered_df = df[df['eprm_catalog'].isin(['PC_EXT']) & (df['eprm_enabled_flg'].isin(['Y']))]
        if len(filtered_df) > 0:
            for _, row in filtered_df.iterrows():
                eprm_table_name = row['eprm_table_name']
                if eprm_table_name != 'PKG_PRD_FED_EXT_ATTRS':
                    query = f"SELECT COUNT(*) FROM {schema_ext}.{eprm_table_name} where release_id='" + releaseId + "' AND op_id='" + opId + "' AND bu_id='" + buId + "'"
                    try:
                        result = pd_read_sql(query, con=connection_ext)
                        count = result.iloc[0, 0]
                        query_info = f"-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ STATUS|{replicationTarget}| TABLE| {eprm_table_name}\n"
                        query_info += f"-- #Query: Result:{count}\n"
                        query_count += 1
                        query_info += query + ";\n"
                        write_sql(query_info)
                        print(f"Count for {eprm_table_name}: {count} PC_EXT")
                        logging.info(f"Count for {eprm_table_name}: {count}")
                        if query_count > 0:
                            try:
                                query_del = f"SELECT COUNT(*) FROM {schema_ext}.{eprm_table_name} where release_id='" + releaseId + "' AND op_id='" + opId + "' AND bu_id='" + buId + "'"
                                cursor_ext.execute(query_del)
                                result = cursor_ext.fetchone()
                                query_info = f"-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ STATUS|{replicationTarget}| TABLE| {eprm_table_name}\n"
                                query_info += f"-- #Query: Result:{result[0]}\n"
                                query_count += 1
                                query_info += query + ";\n"
                                write_sql(query_info)
                                print(f"Count for {eprm_table_name}: {result[0]}" + "PC_EXT for deletion")
                            except mysql.connector.Error as err:
                                print("Error - {} . Line No - {} ".format(str(exp), str(sys.exc_info()[-1].tb_lineno)))
                                print(f"Error occurred while executing the query:{query}: {err}")
                                logging.info(f"Error occurred while executing the query:{query}: {err}")
                    except mysql.connector.Error as err:
                        print("Error - {} . Line No - {} ".format(str(err), str(sys.exc_info()[-1].tb_lineno)))
                        print(f"Error occurred while executing the query :{query}: {err}")
                        logging.info(f"Error occurred while executing the query:{query}: {err}")
        else:
            STATUS = "Error"
            STATUS_MESSAGE = "No records present in PC_EXT"
        logging.info("COMPLETED")

        query_update = f"UPDATE {schema_tar}.ppm_replication_status SET status='" + STATUS + "'" \
                       + ", status_message='" + STATUS_MESSAGE + "'" \
                       + ", error_description=NULL" \
                       + ", updated_by='" + replicationJobId + "' /**/" \
                       + " WHERE replication_job_id='" + replicationJobId + "' AND release_id='" + str(releaseId) + "'"
        query_ppm_update = f"UPDATE {schema_tar}.ppm_release_master SET replication_status='" + STATUS + "'" \
                           + ", updated_by='" + replicationJobId + "' /**/" \
                           + " WHERE release_id='" + str(releaseId) + "'"
        db_type = json_data.get(replicationTarget, {}).get('DB_TYPE')
        if db_type == 'ORACLE':
            query_update = query_update.replace('/**/', ', updated_date=SYSDATE')
            query_ppm_update = query_ppm_update.replace('/**/', ', updated_on=SYSDATE')
        elif db_type in ('MARIA', 'MYSQL'):
            query_update = query_update.replace('/**/', ', updated_date=NOW()')
            query_ppm_update = query_ppm_update.replace('/**/', ', updated_on=NOW()')
        print(query_update)
        try:
            cursor_tar.execute(query_update)
            cursor_tar.execute(query_ppm_update)
            connection_tar.commit()
        except mysql.connector.Error as err:
            print("Error - {} . Line No - {} ".format(str(err), str(sys.exc_info()[-1].tb_lineno)))
            # print(f"Error occurred while executing the query :{query}: {err}")



    except Exception as e:
        print("Error - {} . Line No - {} ".format(str(e), str(sys.exc_info()[-1].tb_lineno)))
        print("An Error occured while constructing dataframe:", str(e))



except mysql.connector.Error as err:
    print("Error - {} . Line No - {} ".format(str(exp), str(sys.exc_info()[-1].tb_lineno)))
    print(f"An error occurred: {err}")
    logging.info(f"An error occurred: {err}")

finally:
    if cursor_tar:
        cursor_tar.close()
    if connection_tar:
        connection_tar.close()
    if cursor_ppm:
        cursor_ppm.close()
    if conn_ppm:
        conn_ppm.close()
    if json_file:
        json_file.close()
    if sql_log_file:
        sql_log_file.close()

can you please arrange this code nicely with good standards and comments and give me full code again..dont give half code