local m = mtimer
local S = m.translator
local d = m.dialog
local cs = minetest.chat_send_player
local ds = minetest.deserialize


-- Colorize a command sequence
--
-- This function returns a colorized chat command sequence with the given
-- parameter and the needed spacing
--
-- @param command The chat command paramter
-- @return table  The colorized string
local command = function (command)
     return minetest.colorize('cyan', '/mtimer '..command..'   ')
end


local custom_timer_handling = function (name, action)
    local player = minetest.get_player_by_name(name)
    local player_meta = player:get_meta()
    local current_timestamp = os.time(os.date('!*t'))
    local ctv_key = m.meta.custom_timer_settings.key
    local ctv = ds(player_meta:get_string(ctv_key))

    if action == 'start' then
        if ctv.running ~= true then
            ctv.running = true
            ctv.start_timestamp = current_timestamp
            cs(name, S('The custom timer was started'))
        else
            cs(name, S('The custom timer is already running'))
        end
    end

    if action == 'stop' then
        if ctv.running ~= false then
            ctv.running = false
            ctv.start_timestamp = 0
            cs(name, S('The custom timer was stopped'))
        else
            cs(name, S('The custom timer is not running'))
        end
    end

    if action == 'restart' then
        if ctv.running == true then
            ctv.start_timestamp = current_timestamp
            cs(name, S('The custom timer was restarted'))
        else
            cs(name, S('The custom timer is not running'))
        end
    end

    player_meta:set_string(ctv_key, minetest.serialize(ctv))
end


-- Chat command
--
-- The `/mtimer` chat command opens the main menu and allows to directly open
-- the formspecs for the specific configuration. It can be run by all users.
--
-- The following parameters are supported.
--
--  Parameter   Mnemonic           Action
-- -------------------------------------------------------------------
--  vi          visibility         d.set_visibility(name)
--  po          position           d.set_position(name)
--  co          color              d.sec_color(name)
--  tz          timezone           d.timezone_offset(name)
--  in          ingame             d.ingame_time_format(name)
--  re          real               d.real_world_time_format(name)
--  ht          host time          d.host_time_format(name)
--  st          start time         d.session_start_time_format(name)
--  sd          session duration   d.session_duration_format(name)
--  hs          HUD size           d.hud_element_size(name)
--  os          OffSet             d.hud_element_offset(name)
--  tf          timer format       d.timer_format(name)
--  ct          custom timer       d.custom_timer(name)
-- -------------------------------------------------------------------
--  help        Prints the help output showing the parameters
--
-- Providing unknown parameters has no effect.
minetest.register_chatcommand('mtimer', {
    description = S('Configure timer display'),
    params = '<vi/po/co/tz/in/re/ht/st/sd/hs/os/tf/ct/help>',
    func = function(name, parameters)
        local action = parameters:match('%a+')

        if not minetest.get_player_by_name(name) then return end
        if not action then d.main_menu(name) end

        if action == 'vi' then d.set_visibility(name) end
        if action == 'po' then d.set_position(name) end
        if action == 'co' then d.set_color(name) end
        if action == 'tz' then d.timezone_offset(name) end
        if action == 'in' then d.ingame_time_format(name) end
        if action == 're' then d.real_world_time_format(name) end
        if action == 'ht' then d.host_time_format(name) end
        if action == 'st' then d.session_start_time_format(name) end
        if action == 'sd' then d.session_duration_format(name) end
        if action == 'hs' then d.hud_element_size(name) end
        if action == 'os' then d.hud_element_offset(name) end
        if action == 'tf' then d.timer_format(name) end
        if action == 'ct' then d.custom_timer(name) end

        if action == 'ctstart'   then custom_timer_handling(name,'start')   end
        if action == 'ctstop'    then custom_timer_handling(name,'stop')    end
        if action == 'ctrestart' then custom_timer_handling(name,'restart') end

        if action == 'help' then
            local message = {
                command('  ')..S('Open Main Menu'),
                command('vi')..S('Visibility'),
                command('po')..S('Position'),
                command('co')..S('Color'),
                command('tz')..S('Timezone Offset'),
                command('in')..S('Ingame Time Format'),
                command('re')..S('Real-World Time Format'),
                command('ht')..S('Host Time Format'),
                command('st')..S('Session Start Time Format'),
                command('sd')..S('Session Duration Format'),
                command('hs')..S('HUD Element Size'),
                command('os')..S('HUD Element Offset'),
                command('tf')..S('Timer Format'),
                '',
                command('ct       ')..S('Configure the custom timer'),
                command('ctstart  ')..S('Start the custom timer'),
                command('ctstop   ')..S('Stop stop custom timer'),
                command('ctrestart')..S('Restart the custom timer')
            }
            cs(name, table.concat(message, '\n'))
        end
    end
})