local Luan = require "luan:Luan.luan"
local error = Luan.error
local ipairs = Luan.ipairs or error()
local Number = require "luan:Number.luan"
local long = Number.long or error()
local Db = require "site:/lib/Db.luan"
local Utils = require "site:/lib/Utils.luan"
local get_user = Utils.get_user or error()


local Server = {}

local function from_doc(doc)
	doc.type == "server" or error "wrong type"
	return Server.new {
		id = doc.id
		discord_id = doc.server_discord_id
		owner_discord_id = doc.server_owner_discord_id
		bumped = doc.server_bumped
		name = doc.name
		icon = doc.icon
		invite = doc.invite
	}
end

local function to_doc(server)
	return {
		type = "server"
		id = server.id
		server_discord_id = server.discord_id or error()
		server_owner_discord_id = server.owner_discord_id or error()
		server_bumped = long(server.bumped)
		name = server.name or error()
		icon = server.icon or error()
		invite = server.invite or error()
	}
end

function Server.new(server)

	function server.save()
		local doc = to_doc(server)
		Db.save(doc)
		server.id = doc.id
	end

	function server.reload()
		return Server.get_by_id(server.id) or error(server.id)
	end

	function server.delete()
		Db.run_in_transaction( function()
			Db.delete("id:"..server.id)
		end )
	end

	function server.write_img_html()
		%><img icon src="https://cdn.discordapp.com/icons/<%=server.discord_id%>/<%=server.icon%>.png"><%
	end

	function server.invite_url()
		return "https://discord.gg/"..server.invite
	end

	return server
end

function Server.get_by_id(id)
	local doc = Db.get_document("id:"..id)
	return doc and from_doc(doc)
end

function Server.get_by_discord_id(discord_id)
	local doc = Db.get_document("server_discord_id:"..discord_id)
	return doc and from_doc(doc)
end

local function search(query,sort,rows)
	rows = rows or 1000000
	local docs = Db.search(query,1,rows,{sort=sort})
	local servers = {}
	for _, doc in ipairs(docs) do
		local server = from_doc(doc)
		servers[#servers+1] = server
	end
	return servers
end
Server.search = search

function Server.get_user_servers()
	return search( "server_owner_discord_id:"..get_user() )
end

function Server.bumped_sort(s1,s2)
	return s1.bumped > s2.bumped
end

return Server