//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================

#include "cbase.h"
#include <vgui_controls/Controls.h>
#include <vgui_controls/Panel.h>
#include <vgui/ISurface.h>
#include "vgui_avatarimage.h"
#if defined( _X360 )
#include "xbox/xbox_win32stubs.h"
#endif
#include "steam/steam_api.h"

DECLARE_BUILD_FACTORY( CAvatarImagePanel );


CUtlMap< AvatarImagePair_t, int> CAvatarImage::s_AvatarImageCache; // cache of steam id's to textureids to use for images
bool CAvatarImage::m_sbInitializedAvatarCache = false;

//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
CAvatarImage::CAvatarImage( void )
: m_sPersonaStateChangedCallback( this, &CAvatarImage::OnPersonaStateChanged )
{
	ClearAvatarSteamID();
	m_pFriendIcon = NULL;
	m_nX = 0;
	m_nY = 0;
	m_wide = m_tall = 0;
	m_avatarWide = m_avatarTall = 0;
	m_Color = Color( 255, 255, 255, 255 );
	m_bLoadPending = false;
	m_fNextLoadTime = 0.0f;
	m_AvatarSize = k_EAvatarSize32x32;
	
	//=============================================================================
	// HPE_BEGIN:
	//=============================================================================
	// [tj] Default to drawing the friend icon for avatars
	m_bDrawFriend = true;

	// [menglish] Default icon for avatar icons if there is no avatar icon for the player
	m_iTextureID = -1;

	// set up friend icon
	m_pFriendIcon = gHUD.GetIcon( "ico_friend_indicator_avatar" );

	m_pDefaultImage = NULL;

	SetAvatarSize(DEFAULT_AVATAR_SIZE, DEFAULT_AVATAR_SIZE);

	//=============================================================================
	// HPE_END
	//=============================================================================

	if ( !m_sbInitializedAvatarCache) 
	{
		m_sbInitializedAvatarCache = true;
		SetDefLessFunc( s_AvatarImageCache );
	}
}

//-----------------------------------------------------------------------------
// Purpose: reset the image to a default state (will render with the default image)
//-----------------------------------------------------------------------------
void CAvatarImage::ClearAvatarSteamID( void )
{
	m_bValid = false;
	m_bFriend = false;
	m_bLoadPending = false;
	m_SteamID.Set( 0, k_EUniverseInvalid, k_EAccountTypeInvalid );
	m_sPersonaStateChangedCallback.Unregister();
}


//-----------------------------------------------------------------------------
// Purpose: Set the CSteamID for this image; this will cause a deferred load
//-----------------------------------------------------------------------------
bool CAvatarImage::SetAvatarSteamID( CSteamID steamIDUser, EAvatarSize avatarSize /*= k_EAvatarSize32x32 */ )
{
	ClearAvatarSteamID();

	m_SteamID = steamIDUser;
	m_AvatarSize = avatarSize;
	m_bLoadPending = true;

	m_sPersonaStateChangedCallback.Register( this, &CAvatarImage::OnPersonaStateChanged );

	LoadAvatarImage();
	UpdateFriendStatus();

	return m_bValid;
}

//-----------------------------------------------------------------------------
// Purpose: Called when somebody changes their avatar image
//-----------------------------------------------------------------------------
void CAvatarImage::OnPersonaStateChanged( PersonaStateChange_t *info )
{
	if ( ( info->m_ulSteamID == m_SteamID.ConvertToUint64() ) && ( info->m_nChangeFlags & k_EPersonaChangeAvatar ) )
	{
		// Mark us as invalid.
		m_bValid = false;
		m_bLoadPending = true;

		// Poll
		LoadAvatarImage();
	}
}

//-----------------------------------------------------------------------------
// Purpose: load the avatar image if we have a load pending
//-----------------------------------------------------------------------------
void CAvatarImage::LoadAvatarImage()
{
#ifdef CSS_PERF_TEST
	return;
#endif
	// attempt to retrieve the avatar image from Steam
	if ( m_bLoadPending && steamapicontext->SteamFriends() && steamapicontext->SteamUtils() && gpGlobals->curtime >= m_fNextLoadTime )
	{
		if ( !steamapicontext->SteamFriends()->RequestUserInformation( m_SteamID, false ) )
		{
			int iAvatar = 0;
			switch( m_AvatarSize )
			{
				case k_EAvatarSize32x32: 
					iAvatar = steamapicontext->SteamFriends()->GetSmallFriendAvatar( m_SteamID );
					break;
				case k_EAvatarSize64x64: 
					iAvatar = steamapicontext->SteamFriends()->GetMediumFriendAvatar( m_SteamID );
					break;
				case k_EAvatarSize184x184: 
					iAvatar = steamapicontext->SteamFriends()->GetLargeFriendAvatar( m_SteamID );
					break;
			}

			//Msg( "Got avatar %d for SteamID %llud (%s)\n", iAvatar, m_SteamID.ConvertToUint64(), steamapicontext->SteamFriends()->GetFriendPersonaName( m_SteamID ) );

			if ( iAvatar > 0 ) // if its zero, user doesn't have an avatar.  If -1, Steam is telling us that it's fetching it
			{
				uint32 wide = 0, tall = 0;
				if ( steamapicontext->SteamUtils()->GetImageSize( iAvatar, &wide, &tall ) && wide > 0 && tall > 0 )
				{
					int destBufferSize = wide * tall * 4;
					byte *rgbDest = (byte*)stackalloc( destBufferSize );
					if ( steamapicontext->SteamUtils()->GetImageRGBA( iAvatar, rgbDest, destBufferSize ) )
						InitFromRGBA( iAvatar, rgbDest, wide, tall );
					
					stackfree( rgbDest );
				}
			}
		}

		if ( m_bValid )
		{
			// if we have a valid image, don't attempt to load it again
			m_bLoadPending = false;
		}
		else
		{
			// otherwise schedule another attempt to retrieve the image
			m_fNextLoadTime = gpGlobals->curtime + 1.0f;
		}
	}
}


//-----------------------------------------------------------------------------
// Purpose: Query Steam to set the m_bFriend status flag
//-----------------------------------------------------------------------------
void CAvatarImage::UpdateFriendStatus( void )
{
	if ( !m_SteamID.IsValid() )
		return;

	if ( steamapicontext->SteamFriends() && steamapicontext->SteamUtils() )
		m_bFriend = steamapicontext->SteamFriends()->HasFriend( m_SteamID, k_EFriendFlagImmediate );
}

//-----------------------------------------------------------------------------
// Purpose: Initialize the surface with the supplied raw RGBA image data
//-----------------------------------------------------------------------------
void CAvatarImage::InitFromRGBA( int iAvatar, const byte *rgba, int width, int height )
{
	int iTexIndex = s_AvatarImageCache.Find( AvatarImagePair_t( m_SteamID, iAvatar ) );
	if ( iTexIndex == s_AvatarImageCache.InvalidIndex() )
	{
		m_iTextureID = vgui::surface()->CreateNewTextureID( true );
		vgui::surface()->DrawSetTextureRGBA( m_iTextureID, rgba, width, height, false, false );
		iTexIndex = s_AvatarImageCache.Insert( AvatarImagePair_t( m_SteamID, iAvatar ) );
		s_AvatarImageCache[ iTexIndex ] = m_iTextureID;
	}
	else
		m_iTextureID = s_AvatarImageCache[ iTexIndex ];
	
	m_bValid = true;
}

//-----------------------------------------------------------------------------
// Purpose: Draw the image and optional friend icon
//-----------------------------------------------------------------------------
void CAvatarImage::Paint( void )
{
	if ( m_bFriend && m_pFriendIcon && m_bDrawFriend)
	{
		m_pFriendIcon->DrawSelf( m_nX, m_nY, m_wide, m_tall, m_Color );
	}

	int posX = m_nX;
	int posY = m_nY;

	if (m_bDrawFriend)
	{
		posX += FRIEND_ICON_AVATAR_INDENT_X * m_avatarWide / DEFAULT_AVATAR_SIZE;
		posY += FRIEND_ICON_AVATAR_INDENT_Y * m_avatarTall / DEFAULT_AVATAR_SIZE;
	}
	
	if ( m_bLoadPending )
	{
		LoadAvatarImage();
	}

	if ( m_bValid )
	{
		vgui::surface()->DrawSetTexture( m_iTextureID );
		vgui::surface()->DrawSetColor( m_Color );
		vgui::surface()->DrawTexturedRect(posX, posY, posX + m_avatarWide, posY + m_avatarTall);
	}
	else if (m_pDefaultImage)
	{
		// draw default
		m_pDefaultImage->SetSize(m_avatarWide, m_avatarTall);
		m_pDefaultImage->SetPos(posX, posY);
		m_pDefaultImage->SetColor(m_Color);
		m_pDefaultImage->Paint();
	}
}

//-----------------------------------------------------------------------------
// Purpose: Set the avatar size; scale the total image and friend icon to fit
//-----------------------------------------------------------------------------
void CAvatarImage::SetAvatarSize(int wide, int tall)
{
	m_avatarWide = wide;
	m_avatarTall = tall;

	if (m_bDrawFriend)
	{
		// scale the size of the friend background frame icon
		m_wide = FRIEND_ICON_SIZE_X * m_avatarWide / DEFAULT_AVATAR_SIZE;
		m_tall = FRIEND_ICON_SIZE_Y * m_avatarTall / DEFAULT_AVATAR_SIZE;
	}
	else
	{
		m_wide = m_avatarWide;
		m_tall = m_avatarTall;
	}
}


//-----------------------------------------------------------------------------
// Purpose: Set the total image size; scale the avatar portion to fit
//-----------------------------------------------------------------------------
void CAvatarImage::SetSize( int wide, int tall )
{
	m_wide = wide;
	m_tall = tall;

	if (m_bDrawFriend)
	{
		// scale the size of the avatar portion based on the total image size
		m_avatarWide = DEFAULT_AVATAR_SIZE * m_wide / FRIEND_ICON_SIZE_X;
		m_avatarTall = DEFAULT_AVATAR_SIZE * m_tall / FRIEND_ICON_SIZE_Y ;
	}
	else
	{
		m_avatarWide = m_wide;
		m_avatarTall = m_tall;
	}
}

bool CAvatarImage::Evict()
{
	return false;
}

int CAvatarImage::GetNumFrames()
{
	return 0;
}

void CAvatarImage::SetFrame( int nFrame )
{
}

vgui::HTexture CAvatarImage::GetID()
{
	return 0;
}


//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
CAvatarImagePanel::CAvatarImagePanel( vgui::Panel *parent, const char *name ) : BaseClass( parent, name )
{
	m_bScaleImage = false;
	m_pImage = new CAvatarImage();
	m_bSizeDirty = true;
	m_bClickable = false;
}


//-----------------------------------------------------------------------------
// Purpose: Set the avatar by C_BasePlayer pointer
//-----------------------------------------------------------------------------
void CAvatarImagePanel::SetPlayer( C_BasePlayer *pPlayer, EAvatarSize avatarSize )
{
	if ( pPlayer )
	{
		int iIndex = pPlayer->entindex();
		SetPlayer(iIndex, avatarSize);
	}
	else
		m_pImage->ClearAvatarSteamID();

}


//-----------------------------------------------------------------------------
// Purpose: Set the avatar by entity number
//-----------------------------------------------------------------------------
void CAvatarImagePanel::SetPlayer( int entindex, EAvatarSize avatarSize )
{
	m_pImage->ClearAvatarSteamID();

	player_info_t pi;
	if ( engine->GetPlayerInfo(entindex, &pi) )
	{
		if ( pi.friendsID != 0 	&& steamapicontext->SteamUtils() )
		{		
			CSteamID steamIDForPlayer( pi.friendsID, 1, GetUniverse(), k_EAccountTypeIndividual );
			SetPlayer(steamIDForPlayer, avatarSize);
		}
		else
		{
			m_pImage->ClearAvatarSteamID();
		}
	}
}

//-----------------------------------------------------------------------------
// Purpose: Set the avatar by SteamID
//-----------------------------------------------------------------------------
void CAvatarImagePanel::SetPlayer(CSteamID steamIDForPlayer, EAvatarSize avatarSize )
{
	m_pImage->ClearAvatarSteamID();

	if (steamIDForPlayer.GetAccountID() != 0 )
		m_pImage->SetAvatarSteamID( steamIDForPlayer, avatarSize );
}

//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAvatarImagePanel::PaintBackground( void )
{
	if ( m_bSizeDirty )
		UpdateSize();

	m_pImage->Paint();
}

void CAvatarImagePanel::ClearAvatar()
{
	m_pImage->ClearAvatarSteamID();
}

void CAvatarImagePanel::SetDefaultAvatar( vgui::IImage* pDefaultAvatar )
{
	m_pImage->SetDefaultImage(pDefaultAvatar);
}

void CAvatarImagePanel::SetAvatarSize( int width, int height )
{
	if ( m_bScaleImage )
	{
		// panel is charge of image size - setting avatar size this way not allowed
		Assert(false);
		return;
	}
	else
	{
		m_pImage->SetAvatarSize( width, height );
		m_bSizeDirty = true;
	}
}

void CAvatarImagePanel::OnSizeChanged( int newWide, int newTall )
{
	BaseClass::OnSizeChanged(newWide, newTall);
	m_bSizeDirty = true;
}

void CAvatarImagePanel::OnMousePressed(vgui::MouseCode code)
{
	if ( !m_bClickable || code != MOUSE_LEFT )
		return;

	PostActionSignal( new KeyValues("AvatarMousePressed") );

	// audible feedback
	const char *soundFilename = "ui/buttonclick.wav";

	vgui::surface()->PlaySound( soundFilename );
}

void CAvatarImagePanel::SetShouldScaleImage( bool bScaleImage )
{
	m_bScaleImage = bScaleImage;
	m_bSizeDirty = true;
}

void CAvatarImagePanel::SetShouldDrawFriendIcon( bool bDrawFriend )
{
	m_pImage->SetDrawFriend(bDrawFriend);
	m_bSizeDirty = true;
}

void CAvatarImagePanel::UpdateSize()
{
	if ( m_bScaleImage )
	{
		// the panel is in charge of the image size
		m_pImage->SetAvatarSize(GetWide(), GetTall());
	}
	else
	{
		// the image is in charge of the panel size
		SetSize(m_pImage->GetAvatarWide(), m_pImage->GetAvatarTall() );
	}

	m_bSizeDirty = false;
}

void CAvatarImagePanel::ApplySettings( KeyValues *inResourceData )
{
	m_bScaleImage = inResourceData->GetInt("scaleImage", 0);

	BaseClass::ApplySettings(inResourceData);
}