-module(helloworld).
-export([ init/1
, routes/0]).
-behaviour(http_handler).
-include("./include/brunhilde.hrl").
-include_lib("xmerl/include/xmerl.hrl").
%% Called upon the start of the server, server
%% can do whatever it wishes do to here.
-spec init(atom()) -> atom().
init(InstanceName) ->
?liof("I have been initialized, I am ~p~n", [InstanceName]),
ok.
routes() ->
[ #route{protocol = json,
verb = get,
address = "/helloworld/hello/",
callback = fun handle_hello/4}
, #route{protocol = json,
verb = get,
address = "/error",
callback = fun handle_error/4}
, #route{protocol = html,
verb = get,
address = "/helloworld.html",
callback = fun handle_html/4}
, #route{protocol = html,
verb = get,
address = "/helloworld2.html",
callback = fun handle_html2/4}
, #route{protocol = xml,
verb = get,
address = "/helloworld/xml/",
callback = fun handle_xml/4}
, #route{protocol = file,
verb = get,
address = "/helloworld/brunhilde.jpg",
callback = fun handle_pic/4}
, #route{protocol = html,
verb = get,
address = "/helloworld/template",
callback = fun handle_template/4}
, #route{protocol = html,
verb = get,
address = "/setcookie",
callback = fun set_cookie/4}
, #route{protocol = html,
verb = get,
address = "/hascookie",
callback = fun has_cookie/4}
, #route{protocol = file,
verb = get,
address = "/favicon.ico",
callback = fun handle_icon/4}
, {'*', fun handle_wildcard/4}].
handle_hello(_Data, Parameters, _Headers, _InstanceName) ->
io:format("Someone asked for ~p", [Parameters]),
#{<<"hello">> => <<"hello2u">>}.
handle_error(_Data, _Parameters, _Headers, _InstanceName) ->
io:format("some error!"),
#{<<"hello">> => <<"error">>}.
handle_html(_Data, _Parameters, _Headers, _InstanceName) ->
Html = ""
" "
" Hello!"
" "
" "
" Hello world!!!
"
" Go somewhere"
" "
"",
?l2b(Html).
handle_html2(_Data, _Parameters, _Headers, _InstanceName) ->
Html = ""
" "
" Hello!"
" "
" "
" Hello world2!!!
"
" 
"
"
"
" Go back"
" "
"",
?l2b(Html).
handle_xml(_Data, _Parameters, _Headers, _InstanceName) ->
[tree()].
%% tree is the property of:
%% https://gist.github.com/afternoon/5014291
tree() ->
Ns1 = "http://cheese.com/names",
Content = [{cheese, [{yarg, [{type, ["medium"]},
#xmlElement{name=country,
content=["nl"]}]}]}],
#xmlElement{name=cheeses,
namespace=#xmlNamespace{default=Ns1},
attributes=[#xmlAttribute{name=xmlns, value=Ns1}],
content=Content}.
handle_template(_, _, _Headers, _InstanceName) ->
{ok, Module} = erlydtl:compile_file("static/example_template.dtl",
template_name),
{ok, Binary} = Module:render([ {thursday, <<"this is a day">>}
, {day, true}
]),
Binary.
handle_pic(_, _, _, _InstanceName) ->
{ok, Binary} = file:read_file("static/brunhilde.jpg"),
Binary.
handle_icon(_, _, _, _InstanceName) ->
{ok, Binary} = file:read_file("static/favicon.ico"),
Binary.
set_cookie(_Data, _Parameters, _Headers, _InstanceName) ->
#{response => <<"Cookie set!">>,
extra_headers => "Set-Cookie: theme=dark\r\n"
"Set-Cookie: user=alice\r\n"}.
has_cookie(_Data, _Parameters, Headers, _InstanceName) ->
Cookies = [Cookies || {"Cookie", Cookies} <- Headers],
Return = case Cookies of
[] ->
<<"No cookie set.">>;
_ ->
?l2b("Following cookies are set: " ++ Cookies)
end,
Return.
handle_wildcard(_Data, _Parameters, _Headers, _InstanceName) ->
<<"Error 404: i dont know what youre saying">>.