berrypod/lib/simpleshop_theme/theme/css_cache.ex
jamey eede9bb517 feat: add encrypted settings, guided Stripe setup, and admin credentials page
Store API keys and secrets encrypted in the SQLite database via the
existing Vault module (AES-256-GCM). The only external dependency is
SECRET_KEY_BASE — everything else lives in the portable DB file.

- Add encrypted_value column to settings table with new "encrypted" type
- Add put_secret/get_secret/delete_setting/secret_hint to Settings context
- Add Secrets module to load encrypted config into Application env at startup
- Add Stripe.Setup module with connect/disconnect/verify_api_key flow
  - Auto-creates webhook endpoints via Stripe API in production
  - Detects localhost and shows Stripe CLI instructions for dev
- Add admin credentials page at /admin/settings with guided setup:
  - Not configured: single Secret key input with dashboard link
  - Connected (production): status display, webhook info, disconnect
  - Connected (dev): Stripe CLI instructions, manual signing secret input
- Remove Stripe env vars from dev.exs and runtime.exs
- Fix CSSCache test startup crash (handle_continue instead of init)
- Add nav link for Credentials page

507 tests, 0 failures.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-07 17:12:53 +00:00

120 lines
2.2 KiB
Elixir

defmodule SimpleshopTheme.Theme.CSSCache do
@moduledoc """
GenServer that maintains an ETS table for caching generated theme CSS.
This provides fast lookups for theme CSS without regenerating it on every request.
The cache is invalidated when theme settings are updated.
"""
use GenServer
@table_name :theme_css_cache
## Client API
@doc """
Starts the CSS cache GenServer.
"""
def start_link(opts) do
GenServer.start_link(__MODULE__, opts, name: __MODULE__)
end
@doc """
Gets cached CSS for the site theme.
Returns `{:ok, css}` if found in cache, or `:miss` if not cached.
## Examples
iex> CSSCache.get()
{:ok, "/* Theme CSS ... */"}
iex> CSSCache.get()
:miss
"""
def get do
case :ets.lookup(@table_name, :site_theme) do
[{:site_theme, css}] -> {:ok, css}
[] -> :miss
end
end
@doc """
Caches CSS for the site theme.
## Examples
iex> CSSCache.put(css_string)
:ok
"""
def put(css) when is_binary(css) do
:ets.insert(@table_name, {:site_theme, css})
:ok
end
@doc """
Invalidates the cached CSS, forcing regeneration on next request.
## Examples
iex> CSSCache.invalidate()
:ok
"""
def invalidate do
:ets.delete(@table_name, :site_theme)
:ok
end
@doc """
Warms the cache by generating and storing CSS from current theme settings.
## Examples
iex> CSSCache.warm()
:ok
"""
def warm do
alias SimpleshopTheme.Settings
alias SimpleshopTheme.Theme.CSSGenerator
settings = Settings.get_theme_settings()
# Use endpoint's static_path for digested URLs in production
path_resolver = &SimpleshopThemeWeb.Endpoint.static_path/1
css = CSSGenerator.generate(settings, path_resolver)
put(css)
:ok
end
## Server Callbacks
@impl true
def init(_opts) do
:ets.new(@table_name, [
:set,
:public,
:named_table,
read_concurrency: true,
write_concurrency: false
])
{:ok, %{}, {:continue, :warm}}
end
@impl true
def handle_continue(:warm, state) do
try do
warm()
rescue
_ -> :ok
end
{:noreply, state}
end
end