⛁ Create budget plan model

lib/budget_tracker/accounts/user.ex

@@ -2,7 +2,7 @@ defmodule BudgetTracker.Accounts.User do
   @moduledoc false
   use Ecto.Schema
   import Ecto.Changeset
-  alias BudgetTracker.{DebitAccounts.DebitAccount, Operations.Operation}
+  alias BudgetTracker.{DebitAccounts.DebitAccount, Operations.Operation, BudgetPlans.BudgetPlan}
 
   @primary_key {:id, :binary_id, autogenerate: true}
   @foreign_key_type :binary_id
@@ -19,6 +19,7 @@ defmodule BudgetTracker.Accounts.User do
     field :role, Ecto.Enum, values: [:admin, :member], default: :member
     has_many :debit_accounts, DebitAccount
     has_many :operations, Operation
+    has_many :budget_plans, BudgetPlan
 
     timestamps(type: :utc_datetime)
   end

lib/budget_tracker/budget_plans.ex

@@ -0,0 +1,104 @@
+defmodule BudgetTracker.BudgetPlans do
+  @moduledoc """
+  The BudgetPlans context.
+  """
+
+  import Ecto.Query, warn: false
+  alias BudgetTracker.Repo
+
+  alias BudgetTracker.BudgetPlans.BudgetPlan
+
+  @doc """
+  Returns the list of budget_plans.
+
+  ## Examples
+
+      iex> list_budget_plans()
+      [%BudgetPlan{}, ...]
+
+  """
+  def list_budget_plans do
+    Repo.all(BudgetPlan)
+  end
+
+  @doc """
+  Gets a single budget_plan.
+
+  Raises `Ecto.NoResultsError` if the Budget plan does not exist.
+
+  ## Examples
+
+      iex> get_budget_plan!(123)
+      %BudgetPlan{}
+
+      iex> get_budget_plan!(456)
+      ** (Ecto.NoResultsError)
+
+  """
+  def get_budget_plan!(id), do: Repo.get!(BudgetPlan, id)
+
+  @doc """
+  Creates a budget_plan.
+
+  ## Examples
+
+      iex> create_budget_plan(%{field: value})
+      {:ok, %BudgetPlan{}}
+
+      iex> create_budget_plan(%{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def create_budget_plan(attrs \\ %{}) do
+    %BudgetPlan{}
+    |> BudgetPlan.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  @doc """
+  Updates a budget_plan.
+
+  ## Examples
+
+      iex> update_budget_plan(budget_plan, %{field: new_value})
+      {:ok, %BudgetPlan{}}
+
+      iex> update_budget_plan(budget_plan, %{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def update_budget_plan(%BudgetPlan{} = budget_plan, attrs) do
+    budget_plan
+    |> BudgetPlan.changeset(attrs)
+    |> Repo.update()
+  end
+
+  @doc """
+  Deletes a budget_plan.
+
+  ## Examples
+
+      iex> delete_budget_plan(budget_plan)
+      {:ok, %BudgetPlan{}}
+
+      iex> delete_budget_plan(budget_plan)
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def delete_budget_plan(%BudgetPlan{} = budget_plan) do
+    Repo.delete(budget_plan)
+  end
+
+  @doc """
+  Returns an `%Ecto.Changeset{}` for tracking budget_plan changes.
+
+  ## Examples
+
+      iex> change_budget_plan(budget_plan)
+      %Ecto.Changeset{data: %BudgetPlan{}}
+
+  """
+  def change_budget_plan(%BudgetPlan{} = budget_plan, attrs \\ %{}) do
+    BudgetPlan.changeset(budget_plan, attrs)
+  end
+end

lib/budget_tracker/budget_plans/budget_plan.ex

@@ -0,0 +1,23 @@
+defmodule BudgetTracker.BudgetPlans.BudgetPlan do
+  alias BudgetTracker.Accounts.User
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  @primary_key {:id, :binary_id, autogenerate: true}
+  @foreign_key_type :binary_id
+  schema "budget_plans" do
+    field :description, :string
+    field :started_form, :naive_datetime
+    field :duration_in_days, :integer
+    belongs_to :users, User
+
+    timestamps(type: :utc_datetime)
+  end
+
+  @doc false
+  def changeset(budget_plan, attrs) do
+    budget_plan
+    |> cast(attrs, [:started_form, :duration_in_days, :description])
+    |> validate_required([:started_form, :duration_in_days, :description])
+  end
+end

priv/repo/migrations/20250115123800_create_budget_plans.exs

@@ -0,0 +1,17 @@
+defmodule BudgetTracker.Repo.Migrations.CreateBudgetPlans do
+  use Ecto.Migration
+
+  def change do
+    create table(:budget_plans, primary_key: false) do
+      add :id, :binary_id, primary_key: true
+      add :started_form, :naive_datetime
+      add :duration_in_days, :integer
+      add :description, :text
+      add :user_id, references(:users, on_delete: :nothing, type: :binary_id)
+
+      timestamps(type: :utc_datetime)
+    end
+
+    create index(:budget_plans, [:user_id])
+  end
+end

test/budget_tracker/budget_plans_test.exs

@@ -0,0 +1,63 @@
+defmodule BudgetTracker.BudgetPlansTest do
+  use BudgetTracker.DataCase
+
+  alias BudgetTracker.BudgetPlans
+
+  describe "budget_plans" do
+    alias BudgetTracker.BudgetPlans.BudgetPlan
+
+    import BudgetTracker.BudgetPlansFixtures
+
+    @invalid_attrs %{description: nil, started_form: nil, duration_in_days: nil}
+
+    test "list_budget_plans/0 returns all budget_plans" do
+      budget_plan = budget_plan_fixture()
+      assert BudgetPlans.list_budget_plans() == [budget_plan]
+    end
+
+    test "get_budget_plan!/1 returns the budget_plan with given id" do
+      budget_plan = budget_plan_fixture()
+      assert BudgetPlans.get_budget_plan!(budget_plan.id) == budget_plan
+    end
+
+    test "create_budget_plan/1 with valid data creates a budget_plan" do
+      valid_attrs = %{description: "some description", started_form: ~N[2025-01-14 12:38:00], duration_in_days: 42}
+
+      assert {:ok, %BudgetPlan{} = budget_plan} = BudgetPlans.create_budget_plan(valid_attrs)
+      assert budget_plan.description == "some description"
+      assert budget_plan.started_form == ~N[2025-01-14 12:38:00]
+      assert budget_plan.duration_in_days == 42
+    end
+
+    test "create_budget_plan/1 with invalid data returns error changeset" do
+      assert {:error, %Ecto.Changeset{}} = BudgetPlans.create_budget_plan(@invalid_attrs)
+    end
+
+    test "update_budget_plan/2 with valid data updates the budget_plan" do
+      budget_plan = budget_plan_fixture()
+      update_attrs = %{description: "some updated description", started_form: ~N[2025-01-15 12:38:00], duration_in_days: 43}
+
+      assert {:ok, %BudgetPlan{} = budget_plan} = BudgetPlans.update_budget_plan(budget_plan, update_attrs)
+      assert budget_plan.description == "some updated description"
+      assert budget_plan.started_form == ~N[2025-01-15 12:38:00]
+      assert budget_plan.duration_in_days == 43
+    end
+
+    test "update_budget_plan/2 with invalid data returns error changeset" do
+      budget_plan = budget_plan_fixture()
+      assert {:error, %Ecto.Changeset{}} = BudgetPlans.update_budget_plan(budget_plan, @invalid_attrs)
+      assert budget_plan == BudgetPlans.get_budget_plan!(budget_plan.id)
+    end
+
+    test "delete_budget_plan/1 deletes the budget_plan" do
+      budget_plan = budget_plan_fixture()
+      assert {:ok, %BudgetPlan{}} = BudgetPlans.delete_budget_plan(budget_plan)
+      assert_raise Ecto.NoResultsError, fn -> BudgetPlans.get_budget_plan!(budget_plan.id) end
+    end
+
+    test "change_budget_plan/1 returns a budget_plan changeset" do
+      budget_plan = budget_plan_fixture()
+      assert %Ecto.Changeset{} = BudgetPlans.change_budget_plan(budget_plan)
+    end
+  end
+end

test/support/fixtures/budget_plans_fixtures.ex

@@ -0,0 +1,22 @@
+defmodule BudgetTracker.BudgetPlansFixtures do
+  @moduledoc """
+  This module defines test helpers for creating
+  entities via the `BudgetTracker.BudgetPlans` context.
+  """
+
+  @doc """
+  Generate a budget_plan.
+  """
+  def budget_plan_fixture(attrs \\ %{}) do
+    {:ok, budget_plan} =
+      attrs
+      |> Enum.into(%{
+        description: "some description",
+        duration_in_days: 42,
+        started_form: ~N[2025-01-14 12:38:00]
+      })
+      |> BudgetTracker.BudgetPlans.create_budget_plan()
+
+    budget_plan
+  end
+end