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defmodule Tmpl do
require Logger
defmodule Filter do
use Liquex.Filter
def repeat(text, val, _) do
String.duplicate(text, val)
end
def rrepeat(text, max, _) do
String.duplicate(text, :random.uniform(max))
end
def rrepeat(text, var) do
rrepeat(text, 20, var)
end
def bold(text, %{variables: variables}) do
unless Map.get(variables, "_no_format") || Map.get(variables, "_no_bold") do
<<2>> <> text <> <<2>>
else
text
end
end
@colors [
:white,
:black,
:blue,
:green,
:red,
:brown,
:purple,
:orange,
:yellow,
:light_green,
:cyan,
:light_blue,
:pink,
:grey,
:light_grey
]
for {color, index} <- Enum.with_index(@colors) do
code = 48 + index
def color_code(unquote(color)) do
unquote(code)
end
def unquote(color)(text, %{variables: variables}) do
unless Map.get(variables, "_no_format") || Map.get(variables, "_no_colors") do
<<3, unquote(code)>> <> text <> <<3>>
else
text
end
end
end
def account_nick(%{"id" => id, "name" => name}, %{
variables: %{"message" => %{"network" => network}}
}) do
if user = Nola.UserTrack.find_by_account(network, %Nola.Account{id: id}) do
user.nick
else
name
end
end
def account_nick(val, ctx) do
"{{account_nick}}"
end
end
def render(template, msg = %Nola.Message{}, context \\ %{}, safe \\ true) do
do_render(template, Map.put(context, "message", msg), safe)
end
defp do_render(template, context, safe) when is_binary(template) do
case Liquex.parse(template) do
{:ok, template_ast} ->
do_render(template_ast, context, safe)
{:error, err, pos} ->
Logger.debug("Liquid error: #{pos} - #{inspect(template)}")
"[liquid ast error (at #{pos}): #{inspect(err)}]"
end
end
defp do_render(template_ast, context, safe) when is_list(template_ast) do
context =
Liquex.Context.new(mapify(context, safe))
|> Map.put(:filter_module, Tmpl.Filter)
{content, _context} = Liquex.render(template_ast, context)
to_string(content)
rescue
e ->
Logger.error("Liquid error: #{inspect(e)}")
"[liquid rendering error]"
end
defp mapify(struct = %{__struct__: _}, safe) do
mapify(Map.from_struct(struct), safe)
end
defp mapify(map = %{}, safe) do
map
|> Enum.reduce(Map.new(), fn {k, v}, acc ->
k = to_string(k)
if safe?(k, safe) do
if v = mapify(v, safe) do
Map.put(acc, k, v)
else
acc
end
else
acc
end
end)
end
defp mapify(fun, _) when is_function(fun) do
nil
end
defp mapify(atom, _) when is_atom(atom) do
to_string(atom)
end
defp mapify(v, _) do
v
end
defp safe?(_, false) do
true
end
defp safe?("token", true), do: false
defp safe?("password", true), do: false
defp safe?(_, true), do: true
end
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