-- debug
if os.getenv("LOCAL_LUA_DEBUGGER_VSCODE") == "1" then
    require("lldebugger").start()
end

-- libraries --
---@type Object
Object = require 'lib/classic/classic'
---@type Baton
Baton = require 'lib/baton/baton'
---@type Timer
Timer = require 'lib/hump/timer'

-- objects --
Room = require 'obj/Room'

function love.load()
    ---@type Room|nil
    current_room = nil

    -- load rooms
    local room_files = {}
    recursiveEnumerate('rooms', room_files)
    requireFiles(room_files)

    -- load input
    input = Baton.new {
        controls = {
            left = {'key:left', 'key:a'},
            right = {'key:right', 'key:d'},
            up = {'key:up', 'key:w'},
            down = {'key:down', 'key:s'},
            action = {'key:z', 'key:space'}
        },
        pairs = {
            move = {'left', 'right', 'up', 'down'}
        }
    }
end

function love.update(dt)
    input:update(dt)
    if current_room then current_room:update(dt) end
end

function love.draw()
    if current_room then current_room:draw() end
end

---Enumerates files in a folder and inserts them to a provided table.
---@param folder string path to folder to scan
---@param file_list table table to be inserted to
function recursiveEnumerate(folder, file_list)
    local items = love.filesystem.getDirectoryItems(folder)
    for _, item in ipairs(items) do
        local file = folder .. '/' .. item
---@diagnostic disable-next-line: undefined-field
        if love.filesystem.isFile(file) then
            table.insert(file_list, file)
---@diagnostic disable-next-line: undefined-field
        elseif love.filesystem.isDirectory(file) then
            recursiveEnumerate(file, file_list)
        end
    end
end

---Load files table as lua modules.
---@param files table table containing files to be loaded
function requireFiles(files)
    for _, file in ipairs(files) do
        local file = file:sub(1, -5)
        require(file)
    end
end

---Go to a specific room.
---@param room_type string the name of the room as registered
---@param ... any arguments passed to the room constructor
function gotoRoom(room_type, ...)
    current_room = _G[room_type](...)
end