--[[-- Command Module - Default permission authorities
The default permission authorities controlled by the flags: admin_only, system_only, no_rcon, disabled

@usage-- Unlock system commands for debugging purposes
/c require("modules/exp-commands").unlock_system_commands(game.player)

@usage-- Disable a command for all players because it is not functioning correctly
/c require("modules/exp-commands").disable("my-command")
]]

local Global = require("modules/exp_util/global")
local Commands = require("modules/exp_commands")
local add, allow, deny = Commands.add_permission_authority, Commands.status.success, Commands.status.unauthorised

local permission_authorities = {}

local system_players = {}
local disabled_commands = {}
Global.register({
    system_players,
    disabled_commands,
}, function(tbl)
    system_players = tbl[1]
    disabled_commands = tbl[2]
end)

--- Allow a player access to system commands, use for debug purposes only
-- @tparam[opt] string player_name The name of the player to give access to, default is the current player
function Commands.unlock_system_commands(player_name)
    system_players[player_name or game.player.name] = true
end

--- Remove access from system commands for a player, use for debug purposes only
-- @tparam[opt] string player_name The name of the player to give access to, default is the current player
function Commands.lock_system_commands(player_name)
    system_players[player_name or game.player.name] = nil
end

--- Get a list of all players who have system commands unlocked
function Commands.get_system_command_players()
    return table.get_keys(system_players)
end

--- Stops a command from be used by any one
-- @tparam string command_name The name of the command to disable
function Commands.disable(command_name)
    disabled_commands[command_name] = true
end

--- Allows a command to be used again after disable was used
-- @tparam string command_name The name of the command to enable
function Commands.enable(command_name)
    disabled_commands[command_name] = nil
end

--- Get a list of all players who have system commands unlocked
function Commands.get_disabled_commands()
    return table.get_keys(disabled_commands)
end

--- If a command has the flag "admin_only" then only admins can use the command#
permission_authorities.admin_only =
add(function(player, command)
    if command.flags.admin_only and not player.admin then
        return deny{"exp-commands-permissions.admin-only"}
    else
        return allow()
    end
end)

--- If a command has the flag "system_only" then only rcon connections can use the command
permission_authorities.system_only =
add(function(player, command)
    if command.flags.system_only and not system_players[player.name] then
        return deny{"exp-commands-permissions.system-only"}
    else
        return allow()
    end
end)

--- If Commands.disable was called then no one can use the command
permission_authorities.disabled =
add(function(_, command)
    if disabled_commands[command.name] then
        return deny{"exp-commands-permissions.disabled"}
    else
        return allow()
    end
end)

return permission_authorities