#include "global.h"
/*
-----------------------------------------------------------------------------
 Class: ThemeManager

 Desc: See header.

 Copyright (c) 2001-2002 by the person(s) listed below.  All rights reserved.
	Chris Danford
-----------------------------------------------------------------------------
*/

#include "ThemeManager.h"
#include "RageLog.h"
#include "PrefsManager.h"
#include "RageException.h"
#include "RageTimer.h"
#include "GameState.h"
#include "GameDef.h"
#include "IniFile.h"
#include "RageTimer.h"
#include "Font.h"
#include "FontCharAliases.h"
#include "RageDisplay.h"


ThemeManager*	THEME = NULL;	// global object accessable from anywhere in the program


const CString BASE_THEME_NAME = "default";
const CString THEMES_DIR  = "Themes/";

ThemeManager::ThemeManager()
{
	m_pIniMetrics = new IniFile;

	/* Update the metric cache on the first call to GetMetric. */
	m_fNextReloadTicks = 0;

	m_sCurThemeName = BASE_THEME_NAME;	// Use the base theme for now.  It's up to PrefsManager to change this.

	CStringArray arrayThemeNames;
	GetAllThemeNames( arrayThemeNames );
}

ThemeManager::~ThemeManager()
{
	delete m_pIniMetrics;
}

void ThemeManager::GetAllThemeNames( CStringArray& AddTo )
{
	GetDirListing( THEMES_DIR+"/*", AddTo, true );
	
	// strip out the folder called "CVS"
	for( CStringArray::iterator i=AddTo.begin(); i != AddTo.end(); ++i )
	{
		if( *i == "CVS" ) {
			AddTo.erase(i, i+1);
			break;
		}
	}
}

void ThemeManager::GetThemeNamesForCurGame( CStringArray& AddTo )
{
	GetAllThemeNames( AddTo );

	/*
	// strip out announcers that don't have the current game name in them
	CString sGameName = GAMESTATE->GetCurrentGameDef()->m_szName;
	sGameName.MakeLower();
	for( unsigned i=AddTo.size()-1; i>=0; i-- )
	{
		CString sLowercaseVer = AddTo[i];
		sLowercaseVer.MakeLower();
		if( sLowercaseVer.Find(sGameName)==-1 )
			AddTo.RemoveAt(i);
	}
	*/
}

bool ThemeManager::DoesThemeExist( CString sThemeName )
{
	CStringArray asThemeNames;	
	GetAllThemeNames( asThemeNames );
	for( unsigned i=0; i<asThemeNames.size(); i++ )
	{
		if( !sThemeName.CompareNoCase(asThemeNames[i]) )
			return true;
	}
	return false;
}

void ThemeManager::SwitchTheme( CString sThemeName )
{
	if( !DoesThemeExist(sThemeName) )
		m_sCurThemeName = BASE_THEME_NAME;
	else
		m_sCurThemeName = sThemeName;

	// update hashes for metrics files
	m_uHashForCurThemeMetrics = GetHashForFile( GetMetricsPathFromName(m_sCurThemeName) );
	m_uHashForBaseThemeMetrics = GetHashForFile( GetMetricsPathFromName(BASE_THEME_NAME) );

	// read new metrics.  First read base metrics, then read cur theme's metrics, overriding base theme
	m_pIniMetrics->Reset();
	m_pIniMetrics->SetPath( GetMetricsPathFromName(BASE_THEME_NAME) );
	m_pIniMetrics->ReadFile();
	m_pIniMetrics->SetPath( GetMetricsPathFromName(m_sCurThemeName) );
	m_pIniMetrics->ReadFile();
}

CString ThemeManager::GetThemeDirFromName( const CString &sThemeName )
{
	return THEMES_DIR + sThemeName + "/";
}

CString ThemeManager::GetPathTo( CString sThemeName, CString sAssetCategory, CString sFileName ) 
{
#if defined(WIN32) // XXX arch?
try_element_again:
#endif
	sAssetCategory.MakeLower();
	sFileName.MakeLower();

	const CString sThemeDir = GetThemeDirFromName( sThemeName );

	CStringArray asPossibleElementFilePaths;

	/* First, look for redirs. */
	GetDirListing( sThemeDir + sAssetCategory+"/"+sFileName + ".redir",
					asPossibleElementFilePaths, false, true );

	if( !asPossibleElementFilePaths.empty() )	// this is a redirect file
	{
		CString sNewFilePath = DerefRedir(asPossibleElementFilePaths[0]);
		
		if( sAssetCategory == "fonts" )
		{
			/* backwards-compatibility hack */
			if( sAssetCategory == "fonts" )
				sNewFilePath.Replace(" 16x16.png", "");
		}
		else if( !DoesFileExist(sNewFilePath) ) 
		{
			CString message = ssprintf(
						"The redirect '%s' points to the file '%s', which does not exist."
						"Verify that this redirect is correct.",
						asPossibleElementFilePaths[0].GetString(), sNewFilePath.GetString());

#if defined(WIN32) // XXX arch?
			if( DISPLAY->IsWindowed() )
				if( MessageBox(NULL, message, "ThemeManager", MB_RETRYCANCEL ) == IDRETRY)
					goto try_element_again;
#endif
			RageException::Throw( "%s", message.GetString() ); 
		}

		/* Search again.  For example, themes/default/Fonts/foo might redir
		 * to "Hello"; but "Hello" might be overridden in themes/hot pink/Fonts/Hello. */

		/* Strip off the path. */
		unsigned pos = sNewFilePath.find_last_of("/\\");
		if(pos != sNewFilePath.npos) sNewFilePath = sNewFilePath.substr(pos+1);
		sFileName = sNewFilePath;

		/* XXX check for loops */
		/* Important: We need to do a full search.  For example, BG redirs in
		 * the default theme point to "_shared background", and themes override
		 * just "_shared background"; the redirs in the default theme should end
		 * up resolving to the overridden background. */
		return GetPathTo(sAssetCategory, sFileName);
//		goto try_element_again;
	}

	static const char *graphic_masks[] = {
		"*.sprite", "*.png", "*.jpg", "*.bmp", "*.gif",
		"*.avi", "*.mpg", "*.mpeg", NULL
	};
	static const char *sound_masks[] = { ".set", ".mp3", ".ogg", ".wav", NULL };
	static const char *font_masks[] = { "*.ini", "*.png", "*.jpg", "*.bmp", "*.gif",  NULL };
	static const char *numbers_masks[] = { "*.png", NULL };
	static const char *bganimations_masks[] = { "", NULL };
	static const char *blank_mask[] = { "", NULL };
	const char **asset_masks = NULL;
	if( sAssetCategory == "graphics" ) asset_masks = graphic_masks;
	else if( sAssetCategory == "sounds" ) asset_masks = sound_masks;
	else if( sAssetCategory == "fonts" ) asset_masks = font_masks;
	else if( sAssetCategory == "numbers" ) asset_masks = numbers_masks;
	else if( sAssetCategory == "bganimations" ) asset_masks = bganimations_masks;
	else ASSERT(0); // Unknown theme asset category

	/* If the theme asset name has an extension, don't add
	 * a mask.  This should only happen with redirs. */
	if(sFileName.find_last_of('.') != sFileName.npos)
		asset_masks = blank_mask;

	bool DirsOnly=false;
	if( sAssetCategory == "bganimations" )
		DirsOnly=true;

	for(int i = 0; asset_masks[i]; ++i)
		GetDirListing( sThemeDir + sAssetCategory+"/" + sFileName + asset_masks[i],
						asPossibleElementFilePaths, DirsOnly, true );

	if( sAssetCategory == "fonts" )
		Font::WeedFontNames(asPossibleElementFilePaths, sFileName);
		
	if(asPossibleElementFilePaths.empty())
		return "";
	else
		return asPossibleElementFilePaths[0];
}

CString ThemeManager::GetPathToOptional( CString sAssetCategory, CString sFileName ) 
{
	CString ret = GetPathTo( m_sCurThemeName, sAssetCategory, sFileName);
	if( !ret.empty() )	// we found something
		return ret;
	ret = GetPathTo( BASE_THEME_NAME, sAssetCategory, sFileName);
	return ret;
}

CString ThemeManager::GetPathTo( CString sAssetCategory, CString sFileName ) 
{
#if defined(DEBUG) && defined(WIN32)
try_element_again:
#endif

	CString ret = GetPathToOptional( sAssetCategory, sFileName ) ;
	if( !ret.empty() )	// we found something
		return ret;

#if defined(DEBUG) && defined(WIN32)
	CString sMessage = ssprintf("The theme element '%s/%s' is missing.",sAssetCategory.GetString(),sFileName.GetString());
	switch( MessageBox(NULL, sMessage, "ThemeManager", MB_RETRYCANCEL ) )
	{
	case IDRETRY:
		FDB.FlushDirCache();
		goto try_element_again;
	case IDCANCEL:
		RageException::Throw( "Theme element '%s/%s' could not be found in '%s' or '%s'.", 
			sAssetCategory.GetString(),
			sFileName.GetString(), 
			GetThemeDirFromName(m_sCurThemeName).GetString(), 
			GetThemeDirFromName(BASE_THEME_NAME).GetString() );
		break;
	}
#endif

	LOG->Warn( 
		"Theme element '%s/%s' could not be found in '%s' or '%s'.", 
		sAssetCategory.GetString(),
		sFileName.GetString(), 
		GetThemeDirFromName(m_sCurThemeName).GetString(), 
		GetThemeDirFromName(BASE_THEME_NAME).GetString() );

	/* Err? */
	if(sFileName == "_missing")
		RageException::Throw("_missing element missing from %s/%s", GetThemeDirFromName(BASE_THEME_NAME).GetString(), sAssetCategory.GetString() );
	return GetPathTo( sAssetCategory, "_missing" );
}


CString ThemeManager::GetMetricsPathFromName( CString sThemeName )
{
	return GetThemeDirFromName( sThemeName ) + "metrics.ini";
}

CString ThemeManager::GetMetric( CString sClassName, CString sValueName )
{
#if defined(DEBUG) && defined(WIN32)
try_metric_again:
#endif
	CString sCurMetricPath = GetMetricsPathFromName(m_sCurThemeName);
	CString sDefaultMetricPath = GetMetricsPathFromName(BASE_THEME_NAME);

	// Is our metric cache out of date?
	// XXX: GTSS wraps every ~40 days.  Need a better way to handler timers like this.
	if (RageTimer::GetTimeSinceStart() >= m_fNextReloadTicks)
	{
		m_fNextReloadTicks = RageTimer::GetTimeSinceStart()+1.0f;
		if( m_uHashForCurThemeMetrics != GetHashForFile(sCurMetricPath)  ||
			m_uHashForBaseThemeMetrics != GetHashForFile(sDefaultMetricPath) )
		{
			SwitchTheme(m_sCurThemeName);	// force a reload of the metrics cache
		}
	}

	CString sValue;
	if( m_pIniMetrics->GetValue(sClassName,sValueName,sValue) )
	{
		sValue.Replace("::","\n");	// "::" means newline since you can't use line breaks in an ini file.

		/* XXX: add a parameter to turn this off if there are some metrics where
		 * we don't want markers */
		FontCharAliases::ReplaceMarkers(sValue);

		return sValue;
	}

#if defined(DEBUG) && defined(WIN32)
	if( IDRETRY == MessageBox(NULL,ssprintf("The theme metric '%s-%s' is missing.  Correct this and click Retry, or Cancel to break.",sClassName.GetString(),sValueName.GetString()),"ThemeManager",MB_RETRYCANCEL ) )
		goto try_metric_again;
#endif

	RageException::Throw( "Theme metric '%s : %s' could not be found in '%s' or '%s'.", 
		sClassName.GetString(),
		sValueName.GetString(),
		sCurMetricPath.GetString(), 
		sDefaultMetricPath.GetString()
		);
}

int ThemeManager::GetMetricI( CString sClassName, CString sValueName )
{
	return atoi( GetMetric(sClassName,sValueName) );
}

float ThemeManager::GetMetricF( CString sClassName, CString sValueName )
{
	return (float)atof( GetMetric(sClassName,sValueName) );
}

bool ThemeManager::GetMetricB( CString sClassName, CString sValueName )
{
	return atoi( GetMetric(sClassName,sValueName) ) != 0;
}

RageColor ThemeManager::GetMetricC( CString sClassName, CString sValueName )
{
	float r=1,b=1,g=1,a=1;	// initialize in case sscanf fails
	CString sValue = GetMetric(sClassName,sValueName);
	int result = sscanf( GetMetric(sClassName,sValueName), "%f,%f,%f,%f", &r, &g, &b, &a );
	if( result != 4 )
	{
		LOG->Warn( "The color value '%s' for NoteSkin metric '%s : %s' is invalid.", GetMetric(sClassName,sValueName).GetString(), sClassName.GetString(), sValueName.GetString() );
		ASSERT(0);
	}

	return RageColor(r,g,b,a);
}