--[[
* Addons - Copyright (c) 2021 Ashita Development Team
* Contact: https://www.ashitaxi.com/
* Contact: https://discord.gg/Ashita
*
* This file is part of Ashita.
*
* Ashita is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Ashita is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Ashita.  If not, see <https://www.gnu.org/licenses/>.
--]]

local switch_lib        = { };
switch_lib.default_case = { };

--[[
* Lua switch-case implementation.
*
* @param {any} value
* @param {table} cases
--]]
local function switch(value, cases)
    local def = cases[switch_lib.default_case] or function () end;

    -- Merge table based keys..
    local ucases = cases;
    for k, v in pairs(ucases) do
        if (type(k) == 'table') then
            for _, vv in pairs(k) do
                cases[vv] = v;
            end
        end
    end

    return setmetatable(cases, {
        __index = function ()
            return def;
        end
    })[value](value);
end

-- Return the switch implementation table..
return setmetatable({
    default = switch_lib.default_case
}, {
    __call = function (_, ...) return switch(...); end
});

--[[
* MIT License
*
* Copyright (c) 2017 Ryan Hartlage
*
* 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 use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
--]]