# 3RD PARTY IMPORTS
import psycopg2

# APPLICATION IMPORTS
import config
from application import postsqldb

def request_receipt_id(conn, site_name):
    next_receipt_id = None
    sql = f"SELECT receipt_id FROM {site_name}_receipts ORDER BY id DESC LIMIT 1;"
    try:
        database_config = config.config()
        with psycopg2.connect(**database_config) as conn:
            with conn.cursor() as cur:
                cur.execute(sql)
                next_receipt_id = cur.fetchone()
                if next_receipt_id == None:
                    next_receipt_id = "00000001"
                else:
                    next_receipt_id = next_receipt_id[0]
                    next_receipt_id = int(next_receipt_id.split("-")[1]) + 1
                    y = str(next_receipt_id)
                    len_str = len(y)
                    x = "".join(["0" for _ in range(8 - len_str)])
                    next_receipt_id = x + y
    except (Exception, psycopg2.DatabaseError) as error:
        raise postsqldb.DatabaseError(error, payload=(), sql=sql)
    
    return next_receipt_id

def selectItemLocationsTuple(site_name, payload, convert=True):
    item_locations = ()
    database_config = config.config()
    select_item_location_sql = f"SELECT * FROM {site_name}_item_locations WHERE part_id = %s AND location_id = %s;"
    try:
        with psycopg2.connect(**database_config) as conn:
            with conn.cursor() as cur:
                cur.execute(select_item_location_sql, payload)
                rows = cur.fetchone()
                if rows and convert:
                    item_locations = postsqldb.tupleDictionaryFactory(cur.description, rows)
                elif rows and not convert:
                    item_locations = rows
        return item_locations
    except Exception as error:
        return error

def selectCostLayersTuple(site_name, payload, convert=True):
    cost_layers = ()
    database_config = config.config()
    select_cost_layers_sql = f"SELECT cl.* FROM {site_name}_item_locations il JOIN {site_name}_cost_layers cl ON cl.id = ANY(il.cost_layers) where il.id=%s;"
    try:
        with psycopg2.connect(**database_config) as conn:
            with conn.cursor() as cur:
                cur.execute(select_cost_layers_sql, payload)
                rows = cur.fetchall()
                if rows and convert:
                    cost_layers = rows
                    cost_layers = [postsqldb.tupleDictionaryFactory(cur.description, layer) for layer in rows]
                elif rows and not convert:
                    cost_layers = rows
        return cost_layers
    except Exception as error:
        return error

def selectLocationsTuple(site, payload, convert=True, conn=None):
    selected = ()
    self_conn = False
    sql = f"SELECT * FROM {site}_locations WHERE id=%s;"
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                selected = postsqldb.tupleDictionaryFactory(cur.description, rows)
            elif rows and not convert:
                selected = rows

        if self_conn:
            conn.commit()
            conn.close()

        return selected
    except Exception as error:
        raise postsqldb.DatabaseError(error, payload, sql)

def selectItemLocationsTuple(site_name, payload, convert=True, conn=None):
    item_locations = ()
    self_conn = False
    select_item_location_sql = f"SELECT * FROM {site_name}_item_locations WHERE part_id = %s AND location_id = %s;"
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(select_item_location_sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                item_locations = postsqldb.tupleDictionaryFactory(cur.description, rows)
            elif rows and not convert:
                item_locations = rows

        if self_conn:
            conn.commit()
            conn.close()

        return item_locations

    except Exception as error:
        return error

def selectLinkedItemByBarcode(site, payload, convert=True, conn=None):
    item = ()
    self_conn = False
    sql = f"SELECT * FROM {site}_itemlinks WHERE barcode=%s;"
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                item = postsqldb.tupleDictionaryFactory(cur.description, rows)
            if rows and not convert:
                item = rows
        
        if self_conn:
            conn.commit()
            conn.close()

        return item
    except (Exception, psycopg2.DatabaseError) as error:
        raise postsqldb.DatabaseError(error, payload, sql)

def selectItemAllByID(site, payload, convert=True, conn=None):
    item = ()
    self_conn = False

    with open(f"application/poe/sql/getItemAllByID.sql", "r+") as file:
        getItemAllByID_sql = file.read().replace("%%site_name%%", site)
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(getItemAllByID_sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                item = postsqldb.tupleDictionaryFactory(cur.description, rows)
            if rows and not convert:
                item = rows
        
        if self_conn:
            conn.commit()
            conn.close()

        return item
    except (Exception, psycopg2.DatabaseError) as error:
        raise postsqldb.DatabaseError(error, payload, getItemAllByID_sql)

def selectItemByBarcode(site, payload, convert=True, conn=None):
    item = ()
    self_conn = False

    if convert:
        item = {}

    if not conn:
        database_config = config.config()
        conn = psycopg2.connect(**database_config)
        conn.autocommit = True
        self_conn = True
    
    with open(f"application/poe/sql/scanner/selectItemByBarcode.sql", "r+") as file:
        selectItemByBarcode_sql = file.read().replace("%%site_name%%", site)

    try:
        with conn.cursor() as cur:
            cur.execute(selectItemByBarcode_sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                item = postsqldb.tupleDictionaryFactory(cur.description, rows)
            if rows and not convert:
                item = rows
    
        if self_conn:
            conn.close()
        return item
    except (Exception, psycopg2.DatabaseError) as error:
        raise postsqldb.DatabaseError(error, payload, selectItemByBarcode_sql)

def paginatePLUItems(site, payload, convert=True, conn=None):
    """ payload = (limit, offset) """
    item = ()
    self_conn = False

    if not conn:
        database_config = config.config()
        conn = psycopg2.connect(**database_config)
        conn.autocommit = True
        self_conn = True
    
    with open(f"application/poe/sql/receipts/getPLUItems.sql", "r+") as file:
        getPLUItems_sql = file.read().replace("%%site_name%%", site)
    try:

        with conn.cursor() as cur:
            cur.execute(getPLUItems_sql, payload)
            rows = cur.fetchall()
            if rows and convert:
                item = [postsqldb.tupleDictionaryFactory(cur.description, row) for row in rows]
            if rows and not convert:
                item = rows
    
        if self_conn:
            conn.close()
        return item
    except (Exception, psycopg2.DatabaseError) as error:
        raise postsqldb.DatabaseError(error, payload, getPLUItems_sql)
       
def insertCostLayersTuple(site, payload, convert=True, conn=None):
    cost_layer = ()
    self_conn = False

    with open(f"application/poe/sql/insertCostLayersTuple.sql", "r+") as file:
        sql = file.read().replace("%%site_name%%", site)
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True
        
        with conn.cursor() as cur:
            cur.execute(sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                cost_layer = postsqldb.tupleDictionaryFactory(cur.description, rows)
            elif rows and not convert:
                cost_layer = rows
        
        if self_conn:
            conn.commit()
            conn.close()

        return cost_layer
    except Exception as error:
        raise postsqldb.DatabaseError(error, payload, sql)

def insertTransactionsTuple(site, payload, convert=True, conn=None):
    # payload (tuple): (timestamp[timestamp], logistics_info_id[int], barcode[str], name[str], 
    transaction = ()
    self_conn = False
    with open(f"application/poe/sql/insertTransactionsTuple.sql", "r+") as file:
        sql = file.read().replace("%%site_name%%", site)
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                transaction = postsqldb.tupleDictionaryFactory(cur.description, rows)
            elif rows and not convert:
                transaction = rows
        
        if self_conn:
            conn.commit()
            conn.close()

    except Exception as error:
        raise postsqldb.DatabaseError(error, payload, sql)
    return transaction

def insertReceiptsTuple(site, payload, convert=True, conn=None):
    receipt = ()
    self_conn = False
    with open(f"application/poe/sql/insertReceiptsTuple.sql", "r+") as file:
        sql = file.read().replace("%%site_name%%", site)
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                receipt = postsqldb.tupleDictionaryFactory(cur.description, rows)
            elif rows and not convert:
                receipt = rows
        
        if self_conn:
            conn.commit()
            conn.close()

        return receipt
        
    except Exception as error:
        raise postsqldb.DatabaseError(error, payload, sql)

def insertReceiptItemsTuple(site, payload, convert=True, conn=None):
    receipt_item = ()
    self_conn = False
    
    with open(f"application/poe/sql/insertReceiptItemsTuple.sql", "r+") as file:
        sql = file.read().replace("%%site_name%%", site)
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                receipt_item = postsqldb.tupleDictionaryFactory(cur.description, rows)
            elif rows and not convert:
                receipt_item = rows

        if self_conn:
            conn.commit()
            conn.close()

        return receipt_item

    except Exception as error:
        raise postsqldb.DatabaseError(error, payload, sql)

def updateCostLayersTuple(site, payload, convert=True, conn=None):
    cost_layer = ()
    self_conn = False

    set_clause, values = postsqldb.updateStringFactory(payload['update'])
    values.append(payload['id'])
    sql = f"UPDATE {site}_cost_layers SET {set_clause} WHERE id=%s RETURNING *;"

    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(sql, values)
            rows = cur.fetchone()
            if rows and convert:
                cost_layer = postsqldb.tupleDictionaryFactory(cur.description, rows)
            elif rows and not convert:
                cost_layer = rows

        if self_conn:
            conn.commit()
            conn.close()
        
        return cost_layer
    except Exception as error:
        return error

def updateItemLocation(site, payload, convert=True, conn=None):
    item_location = ()
    self_conn = False

    with open(f"application/poe/sql/updateItemLocation.sql", "r+") as file:
        sql = file.read().replace("%%site_name%%", site)
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(sql, payload)
            rows = cur.fetchone()
            if rows and convert:
                item_location = postsqldb.tupleDictionaryFactory(cur.description, rows)
            elif rows and not convert:
                item_location = rows
        
        if self_conn:
            conn.commit()
            conn.close()
        
        return item_location
    except Exception as error:
        return error

def deleteCostLayersTuple(site, payload, convert=True, conn=None):
    deleted = ()
    self_conn = False
    sql = f"WITH deleted_rows AS (DELETE FROM {site}_cost_layers WHERE id IN ({','.join(['%s'] * len(payload))}) RETURNING *) SELECT * FROM deleted_rows;"
    try:
        if not conn:
            database_config = config.config()
            conn = psycopg2.connect(**database_config)
            conn.autocommit = True
            self_conn = True

        with conn.cursor() as cur:
            cur.execute(sql, payload)
            rows = cur.fetchall()
            if rows and convert:
                deleted = [postsqldb.tupleDictionaryFactory(cur.description, r) for r in rows]
            elif rows and not convert:
                deleted = rows
        
        if self_conn:
            conn.commit()
            conn.close()

        return deleted
    except Exception as error:
        raise postsqldb.DatabaseError(error, payload, sql)