-- twi_mods/mobile_tips/init.lua
-- Tips for mobile devices
--[[
    The MIT License (MIT)

    Copyright © 2024 1F616EMO

    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
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    SOFTWARE.
]]

local S = minetest.get_translator("mobile_tips")

local function is_mobile(name)
    local player_info = minetest.get_player_information(name)
    local window_info = minetest.get_player_window_information(name)

    if player_info.formspec_version <= 4 and player_info.protocol_version <= 39 then
        -- These are values of MultiCraft 2.0.6
        -- Though not 100% MultiCraft or mobile, we have no way to detect
        return true
    end

    if window_info and window_info.touch_controls then
        -- This is only `true` on 5.9.0 or later, but anyway use this to detect
        return true
    end

    return false
end

local msg = table.concat({
    S("Seems like you are playing on a mobile phone."),
    S("Tap to place node, and long press to dig node."),
    S("If other players mention \"right-click\" or \"left-click\", they mean \"tap\" and \"long press\"."),
    S("Tap the \"chat box\" logo on the right-top corner if you need help."),
}, "\n")

minetest.register_on_joinplayer(function(player)
    local name = player:get_player_name()
    if is_mobile(name) then
        minetest.after(1, function()
            if minetest.get_player_by_name(name) then
                minetest.chat_send_player(name, msg)
            end
        end)
    end
end)