/** @file
  OpenCore driver.

Copyright (c) 2019, vit9696. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#include <Library/OcMainLib.h>

#include <Guid/OcVariable.h>
#include <Guid/GlobalVariable.h>
#include <Guid/AppleVariable.h>

#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/MtrrLib.h>
#include <Library/OcAfterBootCompatLib.h>
#include <Library/OcAppleBootPolicyLib.h>
#include <Library/OcAppleEventLib.h>
#include <Library/OcAppleImageConversionLib.h>
#include <Library/OcAudioLib.h>
#include <Library/OcInputLib.h>
#include <Library/OcAppleKeyMapLib.h>
#include <Library/OcAppleUserInterfaceThemeLib.h>
#include <Library/OcConsoleLib.h>
#include <Library/OcCpuLib.h>
#include <Library/OcDataHubLib.h>
#include <Library/OcDevicePropertyLib.h>
#include <Library/OcDriverConnectionLib.h>
#include <Library/OcFirmwareVolumeLib.h>
#include <Library/OcHashServicesLib.h>
#include <Library/OcMiscLib.h>
#include <Library/OcSmcLib.h>
#include <Library/OcOSInfoLib.h>
#include <Library/OcVariableLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>

STATIC
VOID
EFIAPI
OcExitBootServicesInputHandler (
  IN EFI_EVENT  Event,
  IN VOID       *Context
  )
{
  EFI_STATUS        Status;
  OC_GLOBAL_CONFIG  *Config;

  Config = Context;

  //
  // Printing from ExitBootServices is dangerous, as it may cause
  // memory reallocation, which can make ExitBootServices fail.
  // Only do that on error, which is not expected.
  //

  if (Config->Uefi.Input.TimerResolution != 0) {
    Status = OcAppleGenericInputTimerQuirkExit ();
    if (EFI_ERROR (Status)) {
      DEBUG ((
        DEBUG_INFO,
        "OC: OcAppleGenericInputTimerQuirkExit status - %r\n",
        Status
        ));
    }
  }

  if (Config->Uefi.Input.PointerSupport) {
    Status = OcAppleGenericInputPointerExit ();
    if (EFI_ERROR (Status)) {
      DEBUG ((
        DEBUG_INFO,
        "OC: OcAppleGenericInputPointerExit status - %r\n",
        Status
        ));
    }
  }

  if (Config->Uefi.Input.KeySupport) {
    Status = OcAppleGenericInputKeycodeExit ();
    if (EFI_ERROR (Status)) {
      DEBUG ((
        DEBUG_INFO,
        "OC: OcAppleGenericInputKeycodeExit status - %r\n",
        Status
        ));
    }
  }
}

VOID
OcLoadUefiInputSupport (
  IN OC_GLOBAL_CONFIG  *Config
  )
{
  BOOLEAN                ExitBs;
  EFI_STATUS             Status;
  UINT32                 TimerResolution;
  CONST CHAR8            *PointerSupportStr;
  OC_INPUT_POINTER_MODE  PointerMode;
  OC_INPUT_KEY_MODE      KeyMode;
  CONST CHAR8            *KeySupportStr;

  ExitBs = FALSE;

  TimerResolution = Config->Uefi.Input.TimerResolution;
  if (TimerResolution != 0) {
    Status = OcAppleGenericInputTimerQuirkInit (TimerResolution);
    if (EFI_ERROR (Status)) {
      DEBUG ((DEBUG_ERROR, "OC: Failed to initialize timer quirk\n"));
    } else {
      ExitBs = TRUE;
    }
  }

  if (Config->Uefi.Input.PointerSupport) {
    PointerSupportStr = OC_BLOB_GET (&Config->Uefi.Input.PointerSupportMode);
    PointerMode       = OcInputPointerModeMax;
    if (AsciiStrCmp (PointerSupportStr, "ASUS") == 0) {
      PointerMode = OcInputPointerModeAsus;
    } else {
      DEBUG ((DEBUG_WARN, "OC: Invalid input pointer mode %a\n", PointerSupportStr));
    }

    if (PointerMode != OcInputPointerModeMax) {
      Status = OcAppleGenericInputPointerInit (PointerMode);
      if (EFI_ERROR (Status)) {
        DEBUG ((DEBUG_INFO, "OC: Failed to initialize pointer\n"));
      } else {
        ExitBs = TRUE;
      }
    }
  }

  if (Config->Uefi.Input.KeySupport) {
    DEBUG ((DEBUG_INFO, "OC: Installing KeySupport...\n"));
    KeySupportStr = OC_BLOB_GET (&Config->Uefi.Input.KeySupportMode);
    KeyMode       = OcInputKeyModeMax;
    if (AsciiStrCmp (KeySupportStr, "Auto") == 0) {
      KeyMode = OcInputKeyModeAuto;
    } else if (AsciiStrCmp (KeySupportStr, "V1") == 0) {
      KeyMode = OcInputKeyModeV1;
    } else if (AsciiStrCmp (KeySupportStr, "V2") == 0) {
      KeyMode = OcInputKeyModeV2;
    } else if (AsciiStrCmp (KeySupportStr, "AMI") == 0) {
      KeyMode = OcInputKeyModeAmi;
    } else {
      DEBUG ((DEBUG_WARN, "OC: Invalid input key mode %a\n", KeySupportStr));
    }

    if (KeyMode != OcInputKeyModeMax) {
      Status = OcAppleGenericInputKeycodeInit (
                 KeyMode,
                 Config->Uefi.Input.KeyForgetThreshold,
                 Config->Uefi.Input.KeySwap,
                 Config->Uefi.Input.KeyFiltering
                 );
      if (EFI_ERROR (Status)) {
        DEBUG ((DEBUG_ERROR, "OC: Failed to initialize keycode\n"));
      } else {
        ExitBs = TRUE;
      }
    }
  }

  if (ExitBs) {
    OcScheduleExitBootServices (OcExitBootServicesInputHandler, Config);
  }
}

VOID
OcLoadUefiOutputSupport (
  IN OC_GLOBAL_CONFIG  *Config
  )
{
  EFI_STATUS                    Status;
  CONST CHAR8                   *AsciiRenderer;
  CONST CHAR8                   *GopPassThrough;
  EFI_GRAPHICS_OUTPUT_PROTOCOL  *Gop;
  OC_CONSOLE_RENDERER           Renderer;
  UINT32                        Width;
  UINT32                        Height;
  UINT32                        Bpp;
  BOOLEAN                       SetMax;
  UINT8                         UIScale;

  GopPassThrough = OC_BLOB_GET (&Config->Uefi.Output.GopPassThrough);
  if (AsciiStrCmp (GopPassThrough, "Enabled") == 0) {
    Status = OcProvideGopPassThrough (TRUE);
  } else if (AsciiStrCmp (GopPassThrough, "Apple") == 0) {
    Status = OcProvideGopPassThrough (FALSE);
  } else {
    Status = EFI_SUCCESS;
  }

  if (EFI_ERROR (Status)) {
    DEBUG ((
      DEBUG_INFO,
      "OC: OcProvideGopPassThrough %a status - %r\n",
      GopPassThrough,
      Status
      ));
  }

  if (Config->Uefi.Output.ProvideConsoleGop) {
    OcProvideConsoleGop (TRUE);
  }

  OcParseScreenResolution (
    OC_BLOB_GET (&Config->Uefi.Output.Resolution),
    &Width,
    &Height,
    &Bpp,
    &SetMax
    );

  DEBUG ((
    DEBUG_INFO,
    "OC: Requested resolution is %ux%u@%u (max: %d, force: %d) from %a\n",
    Width,
    Height,
    Bpp,
    SetMax,
    Config->Uefi.Output.ForceResolution,
    OC_BLOB_GET (&Config->Uefi.Output.Resolution)
    ));

  if (SetMax || ((Width > 0) && (Height > 0))) {
    Status = OcSetConsoleResolution (
               Width,
               Height,
               Bpp,
               Config->Uefi.Output.ForceResolution
               );
    DEBUG ((
      EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED ? DEBUG_WARN : DEBUG_INFO,
      "OC: Changed resolution to %ux%u@%u (max: %d, force: %d) from %a - %r\n",
      Width,
      Height,
      Bpp,
      SetMax,
      Config->Uefi.Output.ForceResolution,
      OC_BLOB_GET (&Config->Uefi.Output.Resolution),
      Status
      ));
  } else {
    Status = EFI_UNSUPPORTED;
  }

  if (Config->Uefi.Output.DirectGopRendering) {
    OcUseDirectGop (-1);
  }

  if (Config->Uefi.Output.ReconnectOnResChange && !EFI_ERROR (Status)) {
    OcReconnectConsole ();
  }

  if (Config->Uefi.Output.UgaPassThrough) {
    Status = OcProvideUgaPassThrough ();
    if (EFI_ERROR (Status)) {
      DEBUG ((
        DEBUG_INFO,
        "OC: OcProvideUgaPassThrough status - %r\n",
        Status
        ));
    }
  }

  if ((Config->Uefi.Output.UIScale >= 0) && (Config->Uefi.Output.UIScale <= 2)) {
    if (Config->Uefi.Output.UIScale == 0) {
      Status = gBS->HandleProtocol (
                      gST->ConsoleOutHandle,
                      &gEfiGraphicsOutputProtocolGuid,
                      (VOID **)&Gop
                      );
      if (!EFI_ERROR (Status)) {
        UIScale = (UINT64)Gop->Mode->Info->HorizontalResolution
                  * Gop->Mode->Info->VerticalResolution >= 4000000 ? 2 : 1;
        DEBUG ((
          DEBUG_INFO,
          "OC: Selected UIScale %d based on %ux%u resolution\n",
          UIScale,
          Gop->Mode->Info->HorizontalResolution,
          Gop->Mode->Info->VerticalResolution
          ));
      } else {
        UIScale = 1;
      }
    } else {
      UIScale = (UINT8)Config->Uefi.Output.UIScale;
    }

    Status = OcSetSystemVariable (
               APPLE_UI_SCALE_VARIABLE_NAME,
               EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
               sizeof (UIScale),
               &UIScale,
               &gAppleVendorVariableGuid
               );
    DEBUG ((DEBUG_INFO, "OC: Setting UIScale to %d - %r\n", UIScale, Status));
  }

  AsciiRenderer = OC_BLOB_GET (&Config->Uefi.Output.TextRenderer);

  if ((AsciiRenderer[0] == '\0') || (AsciiStrCmp (AsciiRenderer, "BuiltinGraphics") == 0)) {
    Renderer = OcConsoleRendererBuiltinGraphics;
  } else if (AsciiStrCmp (AsciiRenderer, "BuiltinText") == 0) {
    Renderer = OcConsoleRendererBuiltinText;
  } else if (AsciiStrCmp (AsciiRenderer, "SystemGraphics") == 0) {
    Renderer = OcConsoleRendererSystemGraphics;
  } else if (AsciiStrCmp (AsciiRenderer, "SystemText") == 0) {
    Renderer = OcConsoleRendererSystemText;
  } else if (AsciiStrCmp (AsciiRenderer, "SystemGeneric") == 0) {
    Renderer = OcConsoleRendererSystemGeneric;
  } else {
    DEBUG ((DEBUG_WARN, "OC: Requested unknown renderer %a\n", AsciiRenderer));
    Renderer = OcConsoleRendererBuiltinGraphics;
  }

  OcSetupConsole (
    Renderer,
    Config->Uefi.Output.IgnoreTextInGraphics,
    Config->Uefi.Output.SanitiseClearScreen,
    Config->Uefi.Output.ClearScreenOnModeSwitch,
    Config->Uefi.Output.ReplaceTabWithSpace
    );

  OcParseConsoleMode (
    OC_BLOB_GET (&Config->Uefi.Output.ConsoleMode),
    &Width,
    &Height,
    &SetMax
    );

  DEBUG ((
    DEBUG_INFO,
    "OC: Requested console mode is %ux%u (max: %d) from %a\n",
    Width,
    Height,
    SetMax,
    OC_BLOB_GET (&Config->Uefi.Output.ConsoleMode)
    ));

  if (SetMax || ((Width > 0) && (Height > 0))) {
    Status = OcSetConsoleMode (Width, Height);
    DEBUG ((
      EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
      "OC: Changed console mode to %ux%u (max: %d) from %a - %r\n",
      Width,
      Height,
      SetMax,
      OC_BLOB_GET (&Config->Uefi.Output.ConsoleMode),
      Status
      ));
  }
}