local mod_directory = "./../mods"

-- Mod initialization code --
local debug = debug
local io = io
local ffi = ffi

local assert = assert
local ipairs = ipairs
local loadstring = loadstring
local pairs = pairs
local pcall = pcall
local print = print
local rawget = rawget
local rawset = rawset
local select = select
local setmetatable = setmetatable
local string = string
local table = table
local tonumber = tonumber
local tostring = tostring

Mods = {
  file = {},
  message = {},
  lua = {
    debug = debug,
    io = io,
    ffi = ffi,
    loadstring = loadstring,
    os = os
  }
}

local chat_sound = "wwise/events/ui/play_ui_click"

local notify = function(message)
  local event_manager = Managers and Managers.event

  if event_manager then
    event_manager:trigger("event_add_notification_message", "default", message, nil, chat_sound)
  end

  print(message)
end
Mods.message.notify = notify

local echo = function(message, sender)
  local chat_manager = Managers and Managers.chat
  local event_manager = Managers and Managers.event

  if chat_manager and event_manager then
    local message_obj = {
      message_body = message,
      is_current_user = false,
    }

    local participant = {
      displayname = sender or "SYSTEM",
    }

    local message_sent = false

    local channel_handle, channel = next(chat_manager:connected_chat_channels())
    if channel then
      event_manager:trigger("chat_manager_message_recieved", channel_handle, participant, message_obj)
      message_sent = true
    end

    if not message_sent then
      notify(message)
      return
    end
  end

  print(message)
end
Mods.message.echo = echo

local get_file_path = function(local_path, file_name, file_extension)
  local file_path = mod_directory

  if local_path and local_path ~= "" then
    file_path = file_path .. "/" .. local_path
  end

  if file_name and file_name ~= "" then
    file_path = file_path .. "/" .. file_name
  end

  if file_extension and file_extension ~= "" then
    file_path = file_path .. "." .. file_extension
  else
    file_path = file_path .. ".lua"
  end

  if string.find(file_path, "\\") then
    file_path = string.gsub(file_path, "\\", "/")
  end

  return file_path
end

local function read_or_execute(file_path, args, return_type)
  local f = io.open(file_path, "r")

  local result
  if return_type == "lines" then
    result = {}
    for line in f:lines() do
      if line then
        -- Trim whitespace
        line = line:gsub("^%s*(.-)%s*$", "%1")

        -- Handle empty lines and single-line comments
        if line ~= "" and line:sub(1, 2) ~= "--" then
          table.insert(result, line)
        end
      end
    end
  else
    result = f:read("*all")

    -- Either execute the data or leave it unmodified
    if return_type == "exec_result" or return_type == "exec_boolean" then
      local func = loadstring(result, file_path)
      result = func(args)
    end
  end

  f:close()
  if return_type == "exec_boolean" then
    return true
  else
    return result
  end
end

local function handle_io(local_path, file_name, file_extension, args, safe_call, return_type)

  local file_path = get_file_path(local_path, file_name, file_extension)
  print("[Mod] Loading " .. file_path)

  -- Check for the existence of the path
  local ff, err_io = io.open(file_path, "r")
  if ff ~= nil then
    ff:close()

    -- Initialize variables
    local status, result

    -- If this is a safe call, wrap it in a pcall
    if safe_call then
      status, result = pcall(function ()
        return read_or_execute(file_path, args, return_type)
      end)

      -- If status is failed, notify the user and return false
      if not status then
        notify("[Mod] Error processing '" .. file_path .. "': " .. tostring(result))
        return false
      end

    -- If this isn't a safe call, load without a pcall
    else
      result = read_or_execute(file_path, args, return_type)
    end

    return result

  -- If the initial open failed, report failure
  else
    notify("[Mod] Error opening '" .. file_path .. "': " .. tostring(err_io))
    return false
  end
end

local function exec(local_path, file_name, file_extension, args)
  return handle_io(local_path, file_name, file_extension, args, true, "exec_boolean")
end
Mods.file.exec = exec

local function exec_unsafe(local_path, file_name, file_extension, args)
  return handle_io(local_path, file_name, file_extension, args, false, "exec_boolean")
end
Mods.file.exec_unsafe = exec_unsafe

local function exec_with_return(local_path, file_name, file_extension, args)
  return handle_io(local_path, file_name, file_extension, args, true, "exec_result")
end
Mods.file.exec_with_return = exec_with_return

local function exec_unsafe_with_return(local_path, file_name, file_extension, args)
  return handle_io(local_path, file_name, file_extension, args, false, "exec_result")
end
Mods.file.exec_unsafe_with_return = exec_unsafe_with_return

local function mod_dofile(file_path, args)
  return handle_io(file_path, nil, nil, args, true, "exec_result")
end
Mods.file.dofile = mod_dofile

local function read_content(file_path, file_extension)
  return handle_io(file_path, nil, file_extension, nil, true, "data")
end
Mods.file.read_content = read_content

local function read_content_to_table(file_path, file_extension)
  return handle_io(file_path, nil, file_extension, nil, true, "lines")
end
Mods.file.read_content_to_table = read_content_to_table

local file_exists = function(name)
  print(name)
  local f = io.open(name,"r")

  if f ~= nil then
    print("[Mod]: File exists")
    io.close(f)
    return true
  else
    print("[Mod]: File does not exist")
    return false
  end
end
Mods.file.exists = file_exists

-- Load remaining base modules
exec("base/function", "require")

local init_mod_framework = function()

  print("[DMF]: Initializing basic mod hook system...")
  exec("base/function", "hook")

  -- The mod manager isn't in the bundles, so load our version from the mods folder
  local ModManager = exec_with_return("base", "mod_manager")

  -- Initialize mods after loading managers and state_game files
  Mods.hook.set("Base", "StateRequireScripts._require_scripts", function (req_func, ...)
    local req_result = req_func(...)

    Managers.mod = Managers.mod or ModManager:new()

    -- Update mod manager
    Mods.hook.set("Base", "StateGame.update", function (func, self, dt, ...)
      Managers.mod:update(dt)

      return func(self, dt, ...)
    end)

    -- Skip splash view
    Mods.hook.set("Base", "StateSplash.on_enter", function (func, self, ...)
      local result = func(self, ...)

      self._should_skip = true
      self._continue = true

      return result
    end)

    -- Trigger state change events
    Mods.hook.set("Base", "GameStateMachine._change_state", function (func, self, ...)
      local old_state = self._state
      local old_state_name = old_state and self:current_state_name()

      if old_state_name then
        Managers.mod:on_game_state_changed("exit", old_state_name, old_state)
      end

      local result = func(self, ...)

      local new_state = self._state
      local new_state_name = new_state and self:current_state_name()

      if new_state_name then
        Managers.mod:on_game_state_changed("enter", new_state_name, new_state)
      end

      return result
    end)

    -- Trigger ending state change event
    Mods.hook.set("Base", "GameStateMachine.destroy", function (func, self, ...)
      local old_state = self._state
      local old_state_name = old_state and self:current_state_name()

      if old_state_name then
        Managers.mod:on_game_state_changed("exit", old_state_name)
      end

      return func(self, ...)
    end)

    return req_result
  end)

  -- Set crashify modded property
  Mods.hook.set("Base", "StateRequireScripts._get_is_modded", function ()
    return true
  end)
end

-- Original main script
Main = Main or {}

require("scripts/boot_init")
require("scripts/foundation/utilities/class")

-- Expose classes at the global table
exec("base/function", "class")

require("scripts/foundation/utilities/patches")
require("scripts/foundation/utilities/settings")
require("scripts/foundation/utilities/table")

local GameStateMachine = require("scripts/foundation/utilities/game_state_machine")
local LocalizationManager = require("scripts/managers/localization/localization_manager")
local PackageManager = require("scripts/foundation/managers/package/package_manager")
local PackageManagerEditor = require("scripts/foundation/managers/package/package_manager_editor")
local ParameterResolver = require("scripts/foundation/utilities/parameters/parameter_resolver")
local StateBoot = require("scripts/game_states/state_boot")
local StateLoadAudioSettings = require("scripts/game_states/boot/state_load_audio_settings")
local StateLoadBootAssets = require("scripts/game_states/boot/state_load_boot_assets")
local StateLoadRenderSettings = require("scripts/game_states/boot/state_load_render_settings")
local StateRequireScripts = require("scripts/game_states/boot/state_require_scripts")

function Main:init()
  Script.configure_garbage_collection(Script.ACCEPTABLE_GARBAGE, 0.1, Script.MAXIMUM_GARBAGE, 0.5, Script.FORCE_FULL_COLLECT_GARBAGE_LEVEL, 1, Script.MINIMUM_COLLECT_TIME_MS, 0.1, Script.MAXIMUM_COLLECT_TIME_MS, 0.5)
  ParameterResolver.resolve_command_line()
  ParameterResolver.resolve_game_parameters()
  ParameterResolver.resolve_dev_parameters()
  Application.set_time_step_policy("throttle", DEDICATED_SERVER and 1 / GameParameters.fixed_time_step or 30)

  if type(GameParameters.window_title) == "string" and GameParameters.window_title ~= "" then
    Window.set_title(GameParameters.window_title)
  end

  local package_manager = LEVEL_EDITOR_TEST and PackageManagerEditor:new() or PackageManager:new()
  local localization_manager = LocalizationManager:new()
  local params = {
    next_state = "StateGame",
    index_offset = 1,
    states = {
      {
        StateLoadBootAssets,
        {
          package_manager = package_manager,
          localization_manager = localization_manager
        }
      },
      {
        StateRequireScripts,
        {
          package_manager = package_manager
        }
      },
      {
        StateLoadAudioSettings,
        {}
      }
    },
    package_manager = package_manager,
    localization_manager = localization_manager
  }

  if PLATFORM == "win32" and not LEVEL_EDITOR_TEST then
    table.insert(params.states, 1, {
      StateLoadRenderSettings,
      {}
    })
  end

  if LEVEL_EDITOR_TEST then
    Wwise.load_bank("wwise/world_sound_fx")
  end

  self._package_manager = package_manager
  self._sm = GameStateMachine:new(nil, StateBoot, params, nil, nil, "Main")

  -- #######################
  -- ## Mod intialization ##
  init_mod_framework()
  -- #######################
end

function Main:update(dt)
  self._sm:update(dt)
end

function Main:render()
  self._sm:render()
end

function Main:on_reload(refreshed_resources)
  self._sm:on_reload(refreshed_resources)
end

function Main:on_close()
  local should_close = self._sm:on_close()

  return should_close
end

function Main:shutdown()
  Application.force_silent_exit_policy()

  if rawget(_G, "Crashify") then
    Crashify.print_property("shutdown", true)
  end

  local owns_package_manager = true

  if rawget(_G, "Managers") and Managers.package then
    Managers.package:shutdown_has_started()

    owns_package_manager = false
  end

  local on_shutdown = true

  self._sm:destroy(on_shutdown)

  if owns_package_manager then
    self._package_manager:delete()
  end
end

function init()
  Main:init()
end

function update(dt)
  Main:update(dt)
end

function render()
  Main:render()
end

function on_reload(refreshed_resources)
  Main:on_reload(refreshed_resources)
end

function on_activate(active)
  print("LUA window => " .. (active and "ACTIVATED" or "DEACTIVATED"))

  if active and rawget(_G, "Managers") then
    if Managers.dlc then
      Managers.dlc:evaluate_consumables()
    end

    if Managers.account then
      Managers.account:refresh_communication_restrictions()
    end
  end
end

function on_close()
  local should_close = Main:on_close()

  if should_close then
    Application.force_silent_exit_policy()

    if rawget(_G, "Crashify") then
      Crashify.print_property("shutdown", true)
    end
  end

  return should_close
end

function shutdown()
  Main:shutdown()
end