1 files changed, 257 insertions, 0 deletions
diff --git a/src/transform_lambda/dataframes.py b/src/transform_lambda/dataframes.py
new file mode 100644
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+++ b/src/transform_lambda/dataframes.py
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+import pandas as pd
+from bs4 import BeautifulSoup
+import requests
+
+# Table names:
+# fact_sales_order
+# fact_purchase_orders
+# fact_payment
+# dim_transaction
+# dim_staff
+# dim_payment_type
+# dim_location
+# dim_design
+# dim_date
+# dim_currency
+# dim_counterparty
+
+
+# no test, same as fact_payment
+def create_fact_sales_order(dict_of_df):
+    df_sales = dict_of_df["sales_order"]
+    df_sales.index.name = "sales_record_id"
+
+    df_sales["created_date"] = df_sales["created_at"].astype("datetime64[ns]").dt.date
+    df_sales["created_time"] = (
+        df_sales["created_at"].astype("datetime64[ns]").dt.floor("s").dt.time
+    )
+    df_sales["last_updated_date"] = (
+        df_sales["last_updated"].astype("datetime64[ns]").dt.date
+    )
+    df_sales["last_updated_time"] = (
+        df_sales["last_updated"].astype("datetime64[ns]").dt.floor("s").dt.time
+    )
+    df_sales["agreed_delivery_date"] = pd.to_datetime(
+        df_sales["agreed_delivery_date"], format="%Y-%m-%d"
+    )
+    df_sales["agreed_payment_date"] = pd.to_datetime(
+        df_sales["agreed_payment_date"], format="%Y-%m-%d"
+    )
+    df_sales = df_sales.drop(labels=["created_at", "last_updated"], axis=1)
+
+    df_sales.reset_index(inplace=True)
+    return df_sales
+
+    df_sales["created_date"] = df_sales["created_at"].astype("datetime64[ns]").dt.date
+    df_sales["created_time"] = (
+        df_sales["created_at"].astype("datetime64[ns]").dt.floor("s").dt.time
+    )
+    df_sales["last_updated_date"] = (
+        df_sales["last_updated"].astype("datetime64[ns]").dt.date
+    )
+    df_sales["last_updated_time"] = (
+        df_sales["last_updated"].astype("datetime64[ns]").dt.floor("s").dt.time
+    )
+    df_sales["agreed_delivery_date"] = pd.to_datetime(
+        df_sales["agreed_delivery_date"], format="%Y-%m-%d"
+    )
+    df_sales["agreed_payment_date"] = pd.to_datetime(
+        df_sales["agreed_payment_date"], format="%Y-%m-%d"
+    )
+    df_sales = df_sales.drop(labels=["created_at", "last_updated"], axis=1)
+    df_sales.reset_index(inplace=True)
+    return df_sales
+
+
+# no test, same as fact_payment
+
+
+def create_fact_purchase_orders(dict_of_df):
+    df_po = dict_of_df["purchase_order"]
+    df_po.index.name = "purchase_record_id"
+    df_po["created_date"] = df_po["created_at"].astype("datetime64[ns]").dt.date
+    df_po["created_time"] = (
+        df_po["created_at"].astype("datetime64[ns]").dt.floor("s").dt.time
+    )
+    df_po["last_updated_date"] = df_po["last_updated"].astype("datetime64[ns]").dt.date
+    df_po["last_updated_time"] = (
+        df_po["last_updated"].astype("datetime64[ns]").dt.floor("s").dt.time
+    )
+    df_po["agreed_delivery_date"] = pd.to_datetime(
+        df_po["agreed_delivery_date"], format="%Y-%m-%d"
+    )
+    df_po["agreed_payment_date"] = pd.to_datetime(
+        df_po["agreed_payment_date"], format="%Y-%m-%d"
+    )
+    df_po = df_po.drop(labels=["created_at", "last_updated"], axis=1)
+    df_po.reset_index(inplace=True)
+    return df_po
+
+
+# test passed
+
+
+def create_fact_payment(dict_of_df):
+    df_payment = dict_of_df["payment"]
+    df_payment.index.name = "payment_record_id"
+    df_payment["created_date"] = (
+        df_payment["created_at"].astype("datetime64[ns]").dt.date
+    )
+    df_payment["created_time"] = (
+        df_payment["created_at"].astype("datetime64[ns]").dt.floor("s").dt.time
+    )
+    df_payment["last_updated_date"] = (
+        df_payment["last_updated"].astype("datetime64[ns]").dt.date
+    )
+    df_payment["last_updated_time"] = (
+        df_payment["last_updated"].astype("datetime64[ns]").dt.floor("s").dt.time
+    )
+    df_payment["payment_date"] = pd.to_datetime(
+        df_payment["payment_date"], format="%Y-%m-%d"
+    )
+    df_payment = df_payment.drop(labels=["created_at", "last_updated"], axis=1)
+
+    df_payment.reset_index(inplace=True)
+    return df_payment
+
+
+# test passed
+
+
+def create_dim_transaction(dict_of_df):
+    df_transaction = dict_of_df["transaction"].drop(
+        labels=["created_at", "last_updated"], axis=1
+    )
+    return df_transaction
+
+
+# test passed
+
+
+def create_dim_location(dict_of_df):
+    df_loc = (
+        dict_of_df["address"]
+        .drop(labels=["created_at", "last_updated"], axis=1)
+        .rename(columns={"address_id": "location_id"})
+    )
+    return df_loc
+
+
+def create_dim_counterparty(dict_of_df):
+    df_prefixed_address = (
+        dict_of_df["address"]
+        .drop(labels=["created_at", "last_updated"], axis=1)
+        .add_prefix("counterparty_legal_", axis=1)
+    )
+    df_cp = pd.merge(
+        dict_of_df["counterparty"],
+        df_prefixed_address,
+        left_on="legal_address_id",
+        right_on="counterparty_legal_address_id",
+        how="inner",
+    )
+    df_cp.drop(
+        columns=[
+            "legal_address_id",
+            "counterparty_legal_address_id",
+        ],
+        inplace=True,
+    )
+    return df_cp
+
+
+# test passed
+
+
+def create_dim_date(dict_of_df):
+    fact_dfs = [
+        create_fact_payment(dict_of_df),
+        create_fact_purchase_orders(dict_of_df),
+        create_fact_sales_order(dict_of_df),
+    ]
+    list_of_date_columns = []
+    for df in fact_dfs:
+        date_col_names = [
+            col_name for col_name in list(df.columns) if "_date" in col_name
+        ]
+        for col in date_col_names:
+            list_of_date_columns.append(df[col])
+    sr_date = pd.array(pd.concat(list_of_date_columns), dtype="datetime64[ns]")
+    df_date = pd.DataFrame(data=sr_date, columns=["date_id"])
+    df_date.drop_duplicates(inplace=True)
+    df_date["year"] = df_date["date_id"].dt.year
+    df_date["month"] = df_date["date_id"].dt.month
+    df_date["day"] = df_date["date_id"].dt.day
+    df_date["day_of_week"] = df_date["date_id"].dt.dayofweek
+    df_date["day_name"] = df_date["date_id"].dt.day_name()
+    df_date["month_name"] = df_date["date_id"].dt.month_name()
+    df_date["quarter"] = df_date["date_id"].dt.quarter
+    return df_date
+
+
+# tests passed
+
+
+def scrape_currency_names():
+    response = requests.get("https://www.xe.com/currency/").content
+    soup = BeautifulSoup(response, "html.parser")
+    currency = [
+        item.text for item in soup.findAll("a", attrs={"class": "sc-299dec64-6 fZPTSw"})
+    ]
+    sr = pd.Series(currency)
+    df_cur = sr.str.split(pat=" - ", expand=True).rename(
+        {0: "currency_code", 1: "currency_name"}, axis=1
+    )
+    return df_cur
+
+
+# tests passed
+
+
+def create_dim_currency(dict_of_df, names=scrape_currency_names()):
+    df_cur = dict_of_df["currency"].drop(labels=["created_at", "last_updated"], axis=1)
+    dim_cur = pd.merge(
+        df_cur, names, left_on="currency_code", right_on="currency_code", how="inner"
+    )
+    return dim_cur
+
+
+# tests passed
+
+
+def create_dim_payment_type(dict_of_df):
+    df_payment_type = dict_of_df["payment_type"]
+    dim_payment_type = df_payment_type.loc[:, ["payment_type_id", "payment_type_name"]]
+    return dim_payment_type
+
+
+# tests passed
+
+
+def create_dim_design(dict_of_df):
+    df_design = dict_of_df["design"]
+    dim_design = df_design.loc[
+        :, ["design_id", "design_name", "file_name", "file_location"]
+    ]
+    return dim_design
+
+
+# tests passed
+
+
+def create_dim_staff(dict_of_df):
+    staff_department = pd.merge(
+        dict_of_df["staff"], dict_of_df["department"], on="department_id", how="left"
+    )
+    dim_staff = staff_department.loc[
+        :,
+        [
+            "staff_id",
+            "first_name",
+            "last_name",
+            "department_name",
+            "location",
+            "email_address",
+        ],
+    ]
+    return dim_staff