local httpserver = require "net.httpserver";

local t_concat, t_insert = table.concat, table.insert;

local log = log;

local response_404 = { status = "404 Not Found", body = "<h1>No such action</h1>Sorry, I don't have the action you requested" };

local control = require "core.actions".actions;

local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = string.char(tonumber("0x"..k)); return t[k]; end });

local function urldecode(s)

                return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes));

end

local function query_to_table(query)

        if type(query) == "string" and #query > 0 then

                if query:match("=") then

                        local params = {};

                        for k, v in query:gmatch("&?([^=%?]+)=([^&%?]+)&?") do

                                if k and v then

                                        params[urldecode(k)] = urldecode(v);

                                end

                        end

                        return params;

                else

                        return urldecode(query);

                end

        end

end

local http_path = { http_base };

local function handle_request(method, body, request)

	local path = request.url.path:gsub("^/[^/]+/", "");

	local curr = control;

	for comp in path:gmatch("([^/]+)") do

		curr = curr[comp];

		if not curr then

			return response_404;

		end

	end

	if type(curr) == "table" then

		local s = {};

		for k,v in pairs(curr) do

			t_insert(s, tostring(k));

			t_insert(s, " = ");

			if type(v) == "function" then

				t_insert(s, "action")

			elseif type(v) == "table" then

				t_insert(s, "list");

			else

				t_insert(s, tostring(v));

			end

			t_insert(s, "\n");

		end

		return t_concat(s);

	elseif type(curr) == "function" then

		local params = query_to_table(request.url.query);

		params.host = request.headers.host:gsub(":%d+", "");

		local ok, ret1, ret2 = pcall(curr, params);

		if not ok then

			return "EPIC FAIL: "..tostring(ret1);

		elseif not ret1 then

			return "FAIL: "..tostring(ret2);

		else

			return "OK: "..tostring(ret2);

		end

	end

end

httpserver.new{ port = 5280, base = "control", handler = handle_request, ssl = false }