local channel_message_string = "|#${channel_name}| <${from_player}> ${message}"

-- # chat a.k.a. hash chat/ channel chat code, to send messages in chat channels using #
-- e.g. #my channel: hello everyone in my channel!
hashchat_lastrecv = {}

local hash_send_all = function(msg, name, channel_name)
	beerchat.on_channel_message(channel_name, name, msg)

	for _,player in ipairs(minetest.get_connected_players()) do
		local target = player:get_player_name()
		-- Checking if the target is in this channel
		if beerchat.is_player_subscribed_to_channel(target, channel_name) then
			if not beerchat.has_player_muted_player(target, name) then
				if channel_name == beerchat.main_channel_name then
					beerchat.send_message(
						target,
						beerchat.format_message(
							beerchat.main_channel_message_string, {
								channel_name = channel_name,
								from_player = name,
								message = msg
							}
						),
						channel_name
					)
				else
					beerchat.send_message(
						target,
						beerchat.format_message(
							channel_message_string, {
								channel_name = channel_name,
								from_player = name,
								message = msg
							}
						),
						channel_name
					)
				end
			end
		end
	end
	-- Register the chat in the target persons last spoken to table
	hashchat_lastrecv[name] = channel_name
end

minetest.register_on_chat_message(function(name, message)
	local channel_name, msg = string.match(message, "^#(.-): (.*)")
	if not beerchat.channels[channel_name] then
		channel_name, msg = string.match(message, "^#(.-) (.*)")
	end
	if channel_name == "" then
		channel_name = hashchat_lastrecv[name]
	end

	if channel_name and msg then
		if not beerchat.channels[channel_name] then
			minetest.chat_send_player(name, "Channel "..channel_name.." does not exist. Make sure the channel still "..
											"exists and you format its name properly, e.g. #channel message or #my channel: message")
		elseif msg == "" then
			minetest.chat_send_player(name, "Please enter the message you would like to send to the channel")
		elseif not beerchat.is_player_subscribed_to_channel(name, channel_name) then
			minetest.chat_send_player(name, "You need to join this channel in order to be able to send messages to it")
		else
			if channel_name == "" then--use last used channel
				-- We need to get the target
				channel_name = hashchat_lastrecv[name]
			end
			if channel_name and channel_name ~= "" then
				hash_send_all(msg, name, channel_name)
			else
				return false
			end
		end
		return true
	else
		channel_name = string.match(message, "^#(.*)")
		if channel_name then
			if not beerchat.channels[channel_name] then
				minetest.chat_send_player(name, "Channel "..channel_name.." does not exist")
			elseif not beerchat.is_player_subscribed_to_channel(name, channel_name) then
				minetest.chat_send_player(name, "You need to join this channel in order to be able to switch to it")
			else
				beerchat.currentPlayerChannel[name] = channel_name
				minetest.get_player_by_name(name):get_meta():set_string("beerchat:current_channel", channel_name)
				if channel_name == beerchat.main_channel_name then
					minetest.chat_send_player(
						name,
						"Switched to channel "..channel_name..
							", messages will now be sent to this channel"
					)
				else
					minetest.chat_send_player(
						name,
						"Switched to channel "..channel_name..
							", messages will now be sent to this channel. To switch back "..
							"to the main channel, type #"..beerchat.main_channel_name
					)
				end

				if beerchat.enable_sounds then
					minetest.sound_play(beerchat.channel_management_sound, { to_player = name, gain = beerchat.sounds_default_gain } )
				end
			end
			return true
		end
		return false
	end
end)