local Command = require 'utils.command'
local Rank = require 'features.rank_system'
local Task = require 'utils.task'
local Token = require 'utils.token'
local Server = require 'features.server'
local Popup = require 'features.gui.popup'
local Global = require 'utils.global'
local Ranks = require 'resources.ranks'

local Public = {}

function Public.control(config)

local server_player = {name = '<server>', print = print}

local global_data = {restarting = nil}

Global.register(
    global_data,
    function(tbl)
        global_data = tbl
    end
)

local function double_print(str)
    game.print(str)
    print(str)
end

local callback
callback =
    Token.register(
    function(data)
        if not global_data.restarting then
            return
        end

        local state = data.state
        if state == 0 then
            Server.start_scenario(data.scenario_name)
            double_print('restarting')
            global_data.restarting = nil
            return
        elseif state == 1 then
            Popup.all('\nServer restarting!\nInitiated by ' .. data.name .. '\n')
        end

        double_print(state)

        data.state = state - 1
        Task.set_timeout_in_ticks(60, callback, data)
    end
)

local entities_to_check = {
    'spitter-spawner','biter-spawner',
    'small-worm-turret', 'medium-worm-turret','big-worm-turret', 'behemoth-worm-turret',
    'small-spitter', 'medium-spitter', 'big-spitter', 'behemoth-spitter',
    'small-biter', 'medium-biter', 'big-biter', 'behemoth-biter',
    'gun-turret', 'laser-turret', 'artillery-turret', 'flamethrower-turret'
}

local function map_cleared()
    local get_entity_count = game.forces["enemy"].get_entity_count
    for i = 1, #entities_to_check do
        local name = entities_to_check[i]
        if get_entity_count(name) > 0 then
            return false
        end
    end
    return true
end

local function restart(args, player)
    player = player or server_player
    local sanitised_scenario = args.scenario_name

    if global_data.restarting then
        player.print('Restart already in progress')
        return
    end

    if player ~= server_player and Rank.less_than(player.name, Ranks.admin) then
        -- Check enemy count
        if not map_cleared() then
            player.print('All enemy spawners, worms, buildings, biters and spitters must be cleared for non-admin restart.')
            return
        end

        -- Limit the ability of non-admins to call the restart function with arguments to change the scenario
        -- If not an admin, restart the same scenario always
        sanitised_scenario = config.scenario_name
    end

    global_data.restarting = true

    double_print('#################-Attention-#################')
    double_print('Server restart initiated by ' .. player.name)
    double_print('###########################################')

    for _, p in pairs(game.players) do
        if p.admin then
            p.print('Abort restart with /abort')
        end
    end
    print('Abort restart with /abort')

    Task.set_timeout_in_ticks(60, callback, {name = player.name, scenario_name = sanitised_scenario, state = 10})
end

local function abort(_, player)
    player = player or server_player

    if global_data.restarting then
        global_data.restarting = nil
        double_print('Restart aborted by ' .. player.name)
    else
        player.print('Cannot abort a restart that is not in progress.')
    end
end

Command.add(
    'crash-site-restart-abort',
    {
        description = {'command_description.crash_site_restart_abort'},
        required_rank = Ranks.admin,
        allowed_by_server = true
    },
    abort
)

Command.add(
    'abort',
    {
        description = {'command_description.crash_site_restart_abort'},
        required_rank = Ranks.admin,
        allowed_by_server = true
    },
    abort
)


    local default_name = config.scenario_name or 'crashsite'
    Command.add(
        'crash-site-restart',
        {
            description = {'command_description.crash_site_restart'},
            arguments = {'scenario_name'},
            default_values = {scenario_name = default_name},
            required_rank = Ranks.admin,
            allowed_by_server = true
        },
        restart
    )

    Command.add(
        'restart',
        {
            description = {'command_description.crash_site_restart'},
            arguments = {'scenario_name'},
            default_values = {scenario_name = default_name},
            required_rank = Ranks.auto_trusted,
            allowed_by_server = true
        },
        restart
    )
end

return Public