initial commit of finplan - works, with basic csv dump, need to remove unneeded variables, reformat and improve csv next

main.py

@@ -0,0 +1,130 @@
+# main.py
+from flask import Flask, render_template, request, redirect, url_for, Response
+from calc import calculate_savings_depletion
+from db import init_db, get_finance_data, update_finance
+from collections import defaultdict
+from datetime import datetime
+import csv
+import io
+
+app = Flask(__name__)
+
+# Initialize the database
+init_db()
+
+@app.route('/')
+def index():
+    finance_data = get_finance_data()
+    depletion_date, savings_per_fortnight, final_savings, TLS, CBA = calculate_savings_depletion(finance_data)
+    if depletion_date:
+        depletion_date=depletion_date.date(); # just show date
+
+    # annual bills - rates (2.4), electricity (1.5), gas (2), internet (1.6), car insurance (.7), rego (.8), house insurance (2.4), GFC (2.2), phones (.5), melb. pollen (.03), nabu casa (.1), eweka (.1)  --- noting phone is elevated presuming I also go onto Aldi plan, but that there is no family discount
+    bills = 14330
+    BUDGET=[]
+    BUDGET.append( ('Bills', f"${bills:,.2f}") )
+    BUDGET.append( ('Buffer', f"${CBA*finance_data['CBA_price']:,.2f}") )
+    BUDGET.append( ('Monthly budget', f"${((finance_data['Living_Expenses']-12000) / 12):,.2f}" ) )
+    BUDGET.append( ('Weekly budget', f"${((finance_data['Living_Expenses']-12000) / 52):,.2f}" ) )
+    return render_template('index.html', finance=finance_data, depletion_date=depletion_date, savings=savings_per_fortnight, TLS=TLS, CBA=CBA, BUDGET=BUDGET)
+
+@app.route('/update', methods=['POST'])
+def update():
+
+    finance_data = (
+        request.form['D_Salary'],
+        request.form['M_salary'],
+        request.form['D_Num_fortnights_pay'],
+        request.form['M_Num_fortnights_pay'],
+        request.form['School_Fees'],
+        request.form['Car_loan_via_pay'],
+        request.form['Car_loan'],
+        request.form['Car_balloon'],
+        request.form['Living_Expenses'],
+        request.form['Savings'],
+        request.form['Interest_Rate'],
+        request.form['Inflation'],
+        request.form['M_payout'],
+        request.form['Mich_present'],
+        request.form['Overseas_trip'],
+        request.form['Mark_reno'],
+        request.form['D_leave_owed_in_days'],
+        request.form['D_TLS_shares'],
+        request.form['M_TLS_shares'],
+        request.form['D_CBA_shares'],
+        request.form['TLS_price'],
+        request.form['CBA_price'],
+        request.form['Overseas_trip_date'],
+        request.form['Mark_reno_date'],
+        request.form['M_payout_date'],
+        request.form['Sell_shares'],
+    )
+
+    update_finance(finance_data)
+
+    return redirect(url_for('index'))
+
+@app.route("/download_csv", methods=["GET"])
+def download_csv():
+
+    finance_data = get_finance_data()
+    depletion_date, savings_per_fortnight, final_savings, TLS, CBA = calculate_savings_depletion(finance_data)
+
+    # Group data by year
+    data_by_year = defaultdict(list)
+    for date_str, amount in savings_per_fortnight:
+        year = date_str.split("-")[0]  # Extract the year from the date
+        data_by_year[year].append((date_str, amount))
+
+    # Determine the maximum number of entries for any year
+    max_entries_per_year = max(len(entries) for entries in data_by_year.values())
+
+    # Sort years for column ordering
+    years = sorted(data_by_year.keys())
+
+    # Create an in-memory output file
+    output = io.StringIO()
+    
+    # Create a CSV writer object
+    writer = csv.writer(output)
+
+    # Write header: each year gets two columns (Date, Value)
+    header = []
+    for year in years:
+        header.extend([f"{year}-Date", f"{year}-Value"])
+    writer.writerow(header)
+
+    # Write the data rows
+    for i in range(max_entries_per_year):
+        row = []
+        for year in years:
+            # Add date and value if they exist for the current index
+            if i < len(data_by_year[year]):
+                date, value = data_by_year[year][i]
+                row.extend([date, value])
+            else:
+                row.extend(["", ""])  # If no data for this year, leave blank cells
+        writer.writerow(row)
+
+    csv_data = output.getvalue()
+
+    # Create a Flask Response object, with CSV mime type and downloadable as a file
+    return Response(
+        csv_data,
+        mimetype="text/csv",
+        headers={"Content-disposition": "attachment; filename=finance_data.csv"}
+    )
+
+# Main program
+if __name__ == '__main__':
+    app.run(debug=True)
+
+
+##########
+#
+# How to cross-check, so we get paid: 4762.29 + 1962.56 per fortnight or: $174846.1 AFTER TAX
+# take $20k for Cam, and $20k for Mich for schools last year, $10k for Cam pres, take $72k for living, take $8k in furniture.
+# We went from 250 to 300k (more or less), so about right
+# to note: transfers to Cam/Mich - $850
+# 
+##########