72 lines
1.7 KiB
Elixir
72 lines
1.7 KiB
Elixir
defmodule Todo.Server do
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use GenServer, restart: :temporary
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def start_link(name) do
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GenServer.start_link(__MODULE__, name, name: via_tuple(name))
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end
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def via_tuple(name) do
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Todo.ProcessRegistry.via_tuple({__MODULE__, name})
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end
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def add(pid, entry) do
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GenServer.cast(pid, {:add, entry})
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end
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def entries(pid, date) do
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GenServer.call(pid, {:entries, date})
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end
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def update(pid, id, update_fun) do
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GenServer.cast(pid, {:update, id, update_fun})
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end
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def delete(pid, id) do
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GenServer.cast(pid, {:delete, id})
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end
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@impl GenServer
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def init(name) do
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IO.puts("Starting #{__MODULE__} for #{name}.")
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{:ok, {name, nil}, {:continue, :init}}
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end
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@impl GenServer
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def handle_continue(:init, {name, nil}) do
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todo_list = Todo.Database.get(name) || Todo.List.new()
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{:noreply, {name, todo_list}}
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end
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@impl GenServer
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def handle_call({:entries, date}, _from, {name, todo_list}) do
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entries = Todo.List.entries(todo_list, date)
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{:reply, entries, {name, todo_list}}
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end
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@impl GenServer
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def handle_cast({:add, entry}, {name, todo_list}) do
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new_todo_list = Todo.List.add(todo_list, entry)
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Todo.Database.store(name, new_todo_list)
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{:noreply, {name, new_todo_list}}
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end
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@impl GenServer
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def handle_cast({:update, id, update_fun}, {name, todo_list}) do
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new_todo_list = Todo.List.update(todo_list, id, update_fun)
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Todo.Database.store(name, new_todo_list)
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{:noreply, {name, new_todo_list}}
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end
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@impl GenServer
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def handle_cast({:delete, id}, {name, todo_list}) do
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new_todo_list = Todo.List.delete(todo_list, id)
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Todo.Database.store(name, new_todo_list)
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{:noreply, {name, new_todo_list}}
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end
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end
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