From 0bc1d9bc4a36671c60432d8611da4f7dcbb06cf0 Mon Sep 17 00:00:00 2001
From: Theron Boerner <hunterboerner@gmail.com>
Date: Sun, 2 Mar 2025 11:15:36 -0500
Subject: [PATCH] Inventory amount days

---
 lib/scheduler/scheduler_agent.ex     | 30 +++++++++++++++++---
 test/therons_erp/scheduling_test.exs | 42 ++++++++++++++++++++++++++--
 2 files changed, 66 insertions(+), 6 deletions(-)

diff --git a/lib/scheduler/scheduler_agent.ex b/lib/scheduler/scheduler_agent.ex
index 994460d..5061511 100644
--- a/lib/scheduler/scheduler_agent.ex
+++ b/lib/scheduler/scheduler_agent.ex
@@ -283,9 +283,10 @@ defmodule TheronsErp.Scheduler.SchedulerAgent do
         end
 
       if !peer && lt?(inv_amt, quantity) do
-        {:reply, :ok, add_movements(state, movement) |> sub_inv(inv_amt, product_id)}
+        {:reply, {:ok, Date.add(MyDate.today(), product.replenishment.lead_time_days)},
+         add_movements(state, movement) |> sub_inv(inv_amt, product_id)}
       else
-        {:reply, :ok,
+        {:reply, {:ok, Date.add(MyDate.today(), product.replenishment.lead_time_days)},
          add_movements(state, movement) |> sub_inv(Money.new(quantity, :XIT), product_id)}
       end
     end
@@ -374,14 +375,17 @@ defmodule TheronsErp.Scheduler.SchedulerAgent do
       if peer &&
            lt?(get_total_inventory_amount(state, sales_line.product_id), sales_line.quantity) do
         {{_peer_location_id, _product_id}, pid} = peer
-        propagate_pull_route(pid, sales_line.quantity, sales_line.product_id, state.location_id)
+
+        {:ok, date} =
+          propagate_pull_route(pid, sales_line.quantity, sales_line.product_id, state.location_id)
 
         [
           %{
             quantity: sales_line.quantity,
             product_id: sales_line.product_id,
             from_inventory_id: state.location_id,
-            to_inventory_id: location_id
+            to_inventory_id: location_id,
+            date: date
           }
         ]
       else
@@ -554,4 +558,22 @@ defmodule TheronsErp.Scheduler.SchedulerAgent do
         money
     end
   end
+
+  def get_inv_amount_day(state, product_id, amount_wanted) do
+    {_, date} =
+      (state.inventory[product_id] || [])
+      |> Enum.sort_by(fn {_amount, date} -> date end, Date)
+      |> Enum.reduce({Money.new(0, :XIT), nil}, fn {amount, new_date}, {acc, date} ->
+        if Money.compare(acc, amount_wanted) in [:gt, :eq] do
+          {acc, date}
+        else
+          {Money.add!(acc, amount), new_date}
+        end
+      end)
+
+    date
+  end
+
+  def accelerate_purchase_order(movements, purchase_orders, quantity, product_id) do
+  end
 end
diff --git a/test/therons_erp/scheduling_test.exs b/test/therons_erp/scheduling_test.exs
index 86a844b..f925ab1 100644
--- a/test/therons_erp/scheduling_test.exs
+++ b/test/therons_erp/scheduling_test.exs
@@ -3,6 +3,7 @@ defmodule TheronsErp.SchedulingTest do
   import TheronsErp.Generator
   require Ash.Query
   alias TheronsErp.Scheduler
+  alias TheronsErp.Scheduler.SchedulerAgent
 
   test "noop does nothing" do
   end
@@ -363,6 +364,35 @@ defmodule TheronsErp.SchedulingTest do
 
   test "inventory timing"
 
+  test "mto fallback"
+
+  test "mtso fallback"
+
+  test "accelerate purchase order" do
+    product =
+      generate(product())
+
+    vendor = generate(vendor())
+
+    replenishment =
+      generate(
+        replenishment(
+          product_id: product.id,
+          vendor_id: vendor.id,
+          trigger_quantity: 0,
+          quantity_multiple: 5
+        )
+      )
+
+    product = Ash.load(product, [:replenishment])
+
+    loc_a = generate(location())
+    loc_b = generate(location())
+
+    # SchedulerAgent.accelerate_purchase_order(movements, purchase_orders, 1, product_id)
+    # TODO not done
+  end
+
   test "Move up purchase order" do
     vendor = generate(vendor())
     product = generate(product())
@@ -450,9 +480,17 @@ defmodule TheronsErp.SchedulingTest do
            )
   end
 
-  test "inventory adjustment functions" do
-    alias TheronsErp.Scheduler.SchedulerAgent
+  test "inventory amount day" do
+    state = SchedulerAgent.increase_inv(nil, %{id: 1}, 1, %{inventory: %{}}, MyDate.today())
+    state = SchedulerAgent.increase_inv(nil, %{id: 1}, 3, state, Date.add(MyDate.today(), 14))
+
+    assert SchedulerAgent.get_inv_amount_day(state, 1, Money.new(1, :XIT)) == MyDate.today()
 
+    assert SchedulerAgent.get_inv_amount_day(state, 1, Money.new(2, :XIT)) ==
+             Date.add(MyDate.today(), 14)
+  end
+
+  test "inventory adjustment functions" do
     state = SchedulerAgent.increase_inv(nil, %{id: 1}, 1, %{inventory: %{}}, MyDate.today())
     state = SchedulerAgent.increase_inv(nil, %{id: 1}, 3, state, Date.add(MyDate.today(), 14))