local discordia = require('discordia')
local client = discordia.Client()
local http = require("simple-http")
local json = require('json')
local prefix = "."
math.randomseed(os.time())

--- https://stackoverflow.com/a/22843701
string.startswith = function(self, str)
	return self:find('^' .. str) ~= nil
end

function load(filename)
	local f = io.open(filename, "r")
	if not f then return false end
	local token = f:read("*a")
	f:close()
	return token:gsub("\n","")
end

function write(filename, inp)
	local f = io.open(filename, "w")
	if not f then return false end
	local token = f:write(inp)
	f:close()
	return true
end

function getnick(str, guild)
	if guild ~= nil then
		local b = str:gsub("<@",""):gsub(">","")
		local user = guild:getMember(b)
		if user.nickname == nil then
			return user.name
		else
			return user.nickname
		end
	else
		local b = str:gsub("<@",""):gsub(">","")
		local user = client:getUser(b)
		return user.name
	end
end

client:on('ready', function()
	print('Logged in as '.. client.user.username)
end)

client:on('messageCreate', function(message)
	if message.content == prefix .. 'ping' then
		message.channel:send({embed = {title = "Ping?",description = "Pong!",color = 0x00FFFF}})
	end
	if message.content:startswith(prefix .. 'hug <@') then
		local action = "hug"
		local actioner = " hugged "
		local body, res = http.request("GET", "https://nekos.life/api/v2/img/" .. action)
		message.channel:send({embed = {title = "Aww! " .. getnick(message.author.id, message.guild) .. actioner .. getnick(message.content:gsub(prefix .. action .. ' ', ''), message.guild) .. "!",color = 0x00FFFF, image = {url = body.url, height = 0, width = 0}}})
	end
	if message.content:startswith(prefix .. 'cuddle <@') then
		local action = "cuddle"
		local actioner = " cuddled "
		local body, res = http.request("GET", "https://nekos.life/api/v2/img/" .. action)
		message.channel:send({embed = {title = "Aww! " .. getnick(message.author.id, message.guild) .. actioner .. getnick(message.content:gsub(prefix .. action .. ' ', ''), message.guild) .. "!",color = 0x00FFFF, image = {url = body.url, height = 0, width = 0}}})
	end
	if message.content:startswith(prefix .. 'kiss <@') then
		local action = "kiss"
		local actioner = " kissed "
		local body, res = http.request("GET", "https://nekos.life/api/v2/img/" .. action)
		message.channel:send({embed = {title = "Aww! " .. getnick(message.author.id, message.guild) .. actioner .. getnick(message.content:gsub(prefix .. action .. ' ', ''), message.guild) .. "!",color = 0x00FFFF, image = {url = body.url, height = 0, width = 0}}})
	end
	if message.content:startswith(prefix .. 'slap <@') then
		local action = "slap"
		local actioner = " slapped "
		local body, res = http.request("GET", "https://nekos.life/api/v2/img/" .. action)
		message.channel:send({embed = {title = "Woah! " .. getnick(message.author.id, message.guild) .. actioner .. getnick(message.content:gsub(prefix .. action .. ' ', ''), message.guild) .. "!",color = 0x00FFFF, image = {url = body.url, height = 0, width = 0}}})
	end
	if message.content:startswith(prefix .. 'pat <@') then
		local action = "pat"
		local actioner = " patted "
		local body, res = http.request("GET", "https://nekos.life/api/v2/img/" .. action)
		message.channel:send({embed = {title = "Aww! " .. getnick(message.author.id, message.guild) .. actioner .. getnick(message.content:gsub(prefix .. action .. ' ', ''), message.guild) .. "!",color = 0x00FFFF, image = {url = body.url, height = 0, width = 0}}})
	end
	if message.content:startswith(prefix .. '8ball') then
		local array = {"As I see it, yes.", "Ask again later.", "Better not tell you now.", "Cannot predict now.", "Concentrate and ask again.","Don’t count on it.", "It is certain.", "It is decidedly so.", "Most likely.", "My reply is no.", "My sources say no.","Outlook not so good.", "Outlook good.", "Reply hazy, try again.", "Signs point to yes.", "Very doubtful.", "Without a doubt.","Yes.", "Yes – definitely.", "You may rely on it."}
		local r = math.random(1,20)
		if message.content:gsub(prefix..'8ball','') == "" or message.content:gsub(prefix..'8ball','') == " " then
			message.channel:send("The 8-ball requires a question!")
		else
			message.channel:send("**" .. getnick(message.author.id,message.guild).. "** has asked the magic 8-ball: **"..message.content:gsub(prefix..'8ball ','').."**\n\nThe magic 8-ball replies: **"..array[r].."**")
		end
	end
	if message.content == prefix .. 'hug' then
		message.channel:send("You gotta hug someone!")
	end
	if message.content == prefix .. 'cuddle' then
		message.channel:send("You gotta cuddle someone!")
	end
	if message.content == prefix .. 'slap' then
		message.channel:send("You gotta slap someone!")
	end
	if message.content == prefix .. 'kiss' then
		message.channel:send("You gotta kiss someone!")
	end
	if message.content == prefix .. 'pat' then
		message.channel:send("You gotta pat someone!")
	end
	if message.content == prefix .. 'help' then
		message.channel:send("**Need help? Refer to my handy dandy help sheet!**\n\n```diff\n+ Action\nhug kiss pat cuddle slap\n\n+ Fun\n8ball counter\n\n+ Info\nping help source\n```")
	end
	if message.content:lower() == "welon sus" then
		local welonsus = load("data/welon.txt")
		welonsus = tonumber(welonsus)
		message:addReaction("🗿")
		welonsus = welonsus + 1
		write("data/welon.txt", tostring(welonsus))
	end
	if message.content == prefix .. 'source' then
		message.channel:send("**Look inside my brain at https://git.colean.cc/threeoh6000/joltik**")
	end
	if message.content == prefix .. 'counter' then
		local weloncounter = load("data/welon.txt")
		message.channel:send("**Times Welon has been sus:** ".. weloncounter)
	end
	if message.content == prefix .. 'shutdown' then
		if message.author.id == "867901290336223242" then
			message.channel:send("**Shutting down!** Good night mother! :heart:")
			client:stop()
		else
			message.channel:send("You aren't my mother!")
		end
	end
end)

client:run('Bot ' .. load("token.txt"))