chore: init commit

in worker.../repo/GITFOLDER.zip is the .git folder.

worker-toolkit-stocks-in-the-future/repo/app/models/portfolio.rb

@@ -0,0 +1,105 @@
+# frozen_string_literal: true
+
+class Portfolio < ApplicationRecord
+  include ::UrlHelpers
+
+  belongs_to :user
+  validate :user_must_be_student
+
+  delegate :username, :student?, :school_name, :trading_enabled?, to: :user
+
+  has_many :portfolio_transactions, dependent: :destroy
+  has_many :portfolio_stocks, dependent: :destroy
+  has_many :stocks, through: :portfolio_stocks
+  has_many :portfolio_snapshots, dependent: :destroy
+
+  def cash_balance
+    cash_on_hand
+  end
+
+  def path
+    portfolio_path(self)
+  end
+
+  def shares_owned(stock_id)
+    portfolio_stocks.where(stock_id: stock_id).sum(:shares)
+  end
+
+  def positions
+    PortfolioPosition.for_portfolio(self)
+  end
+
+  def calculate_total_value_cents
+    cash_on_hand_in_cents + holdings_value_cents
+  end
+
+  def calculate_total_value
+    calculate_total_value_cents / 100.0
+  end
+
+  def total_portfolio_worth
+    calculate_total_value
+  end
+
+  def holdings_value
+    holdings_value_cents / 100.0
+  end
+
+  def holdings_value_cents
+    portfolio_stocks.joins(:stock).sum(
+      "portfolio_stocks.shares * stocks.price_cents"
+    )
+  end
+
+  def chart_data
+    snapshots = portfolio_snapshots.order(date: :asc).last(12)
+
+    snapshots.map do |snapshot|
+      {
+        label: snapshot.date.strftime("%b %Y"),
+        value: snapshot.current_worth
+      }
+    end
+  end
+
+  private
+
+  def cash_on_hand
+    cash_on_hand_in_cents / 100.0
+  end
+
+  def cash_on_hand_in_cents
+    credits = total_credits + total_deposits
+    debits = total_debits + total_withdrawals + total_fees + pending_transaction_fee
+    credits - debits
+  end
+
+  def total_withdrawals
+    portfolio_transactions.withdrawals.sum(:amount_cents)
+  end
+
+  def total_deposits
+    portfolio_transactions.deposits.sum(:amount_cents)
+  end
+
+  def total_fees
+    portfolio_transactions.fees.sum(:amount_cents)
+  end
+
+  def total_credits
+    portfolio_transactions.credits.sum(:amount_cents)
+  end
+
+  def total_debits
+    pending_orders_amount = user.orders.pending.buy.sum(&:purchase_cost) || 0
+    portfolio_transactions.debits.sum(:amount_cents) + pending_orders_amount
+  end
+
+  def pending_transaction_fee
+    user.orders.pending.exists? ? PortfolioTransaction::TRANSACTION_FEE_CENTS : 0
+  end
+
+  def user_must_be_student
+    errors.add(:user, "must be a student") unless user&.student?
+  end
+end