module Brochure
class Application
attr_reader :app_root, :helper_root, :template_root, :asset_root
def initialize(root)
@app_root = File.expand_path(root)
@helper_root = File.join(@app_root, "app", "helpers")
@template_root = File.join(@app_root, "app", "templates")
@asset_root = File.join(@app_root, "public")
@template_trail = Hike::Trail.new(@app_root)
@template_trail.extensions.replace(Tilt.mappings.keys.sort)
@template_trail.paths.push(@template_root)
@context_class = Context.for(helpers)
@templates = {}
end
def helpers
@helpers ||= Dir[File.join(@helper_root, "**", "*.rb")].map do |helper_path|
base_name = helper_path[(@helper_root.length + 1)..-1][/(.*?)\.rb$/, 1]
module_names = base_name.split("/").map { |n| Brochure.camelize(n) }
load helper_path
module_names.inject(Kernel) { |mod, name| mod.const_get(name) }
end
end
def call(env)
if forbidden?(env["PATH_INFO"])
forbidden
elsif template = find_template(env["PATH_INFO"][/[^.]+/])
success render_template(template, env)
else
not_found
end
end
def forbidden?(path)
path[".."] || File.basename(path)[/^_/]
end
def find_template(logical_path)
if template_path = find_template_path(logical_path)
template_for(template_path)
end
end
def find_partial(logical_path)
if template_path = find_partial_path(logical_path)
template_for(template_path)
end
end
def find_template_path(logical_path)
candidates = [logical_path + ".html", logical_path + "/index.html"]
@template_trail.find(*candidates)
end
def find_partial_path(logical_path)
path_parts = logical_path.split("/")
partial_path = (path_parts[0..-2] + ["_" + path_parts[-1]]).join("/")
@template_trail.find(partial_path + ".html")
end
def template_for(template_path)
if Brochure.development?
Tilt.new(template_path)
else
@templates[template_path] ||= Tilt.new(template_path)
end
end
def render_template(template, env, locals = {})
context = @context_class.new(self, env)
template.render(context, locals)
end
def respond_with(status, body, content_type = "text/html, charset=utf-8")
headers = {
"Content-Type" => content_type,
"Content-Length" => body.length.to_s
}
[status, headers, [body]]
end
def success(body)
respond_with 200, body
end
def not_found
respond_with 404, <<-HTML
Not Found
404 Not Found
HTML
end
def forbidden
respond_with 403, "Forbidden"
end
end
end