-- The plugin base table.
PLUGIN = {};

-- A list for registered plugins.
PLUGIN.list = {};

-- For storing data later on.
PLUGIN.cache = {};

-- To register new plugins.
function PLUGIN.register( name, data )
    PLUGIN.list[ name ] = data;
end

-- This return a table, of keys( by numbers ), in order, with a value that is a table, that has the names of the plugins in that priority number.
-- We will do this so we can call plugins in specific order later on.
function PLUGIN.ComputePriorityTable()

    print( "Computing priority table...");
    local priority = {};

    for plugin,data in pairs( PLUGIN.list ) do

        -- The priority number for the current plugin.
        local pn = data.priority;

        -- If there already is a plugin with this priority number, insert the plugin name.
        if ( priority[pn]) then

            -- If there is no plugin in this priority list with the same name, then insert. if not, do nothing.
            if ( !table.HasValue( priority[pn], plugin ) ) then
                table.insert( priority[pn], plugin );
            else
            end

        else

            priority[pn] = {};
            table.insert( priority[pn], plugin );
        end
    end

    -- Put them in order from lowest to highest.
    priority = table.SortByKey( priority, false );

    -- Cache things.
    PLUGIN.cache.lowestpriority = table.GetFirstKey(priority);
    PLUGIN.cache.highestpriority = table.maxn(priority);
    PLUGIN.cache.prioritytable = priority;

    print( "Finished computing priority table!");
end

-- Call all of them in order.
function PLUGIN.CallPluginMainsByPriority()

    -- On the odd occassion there is no plugins.
    if ( !PLUGIN.cache.prioritytable ) then return end;

    for _,v in pairs( PLUGIN.cache.prioritytable ) do

        for priority,name in pairs( v ) do

            if ( PLUGIN.list[name].main ) then
                PLUGIN.list[name].main( PLUGIN.list[name] );
            end
        end
    end
end