/*                                                                  -*- c++ -*-
Copyright (C) 2004-2013 Christian Wieninger

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html

The author can be reached at cwieninger@gmx.de

The project's page is at http://winni.vdr-developer.org/epgsearch
*/

#include <vector>
#include <string>
#include "menu_conflictcheck.h"
#include "menu_commands.h"
#include "menu_event.h"
#include "conflictcheck.h"
#include "timer_thread.h"
#include <vdr/menu.h>

using std::string;

// --- cMenuConflictCheckItem -------------------------------------------------------
cMenuConflictCheckItem::cMenuConflictCheckItem(cConflictCheckTime* Ct, cConflictCheckTimerObj* TimerObj)
{
    checktime = Ct;
    timerObj = TimerObj;
    cString buffer;
    if (!TimerObj) // print header
    {
	struct tm tm_r;
	const time_t t = checktime->evaltime;
	tm *tm = localtime_r(&t, &tm_r);
	char dateshort[7] = "";
	strftime(dateshort, sizeof(dateshort), "%d.%m.", tm);
	buffer = cString::sprintf("%s\t%s  %s", WEEKDAYNAME(t), dateshort, TIMESTRING(t));
	SetSelectable(false);
    }
    else
    {
	const cTimer* t = timerObj->timer;
	int recPart = timerObj->recDuration * 100 / (timerObj->stop - timerObj->start);
	buffer = cString::sprintf("%d\t%s\t%d\t%2d%%\t%s", t->Channel()->Number(), t->Channel()->ShortName(true), t->Priority(), recPart, t->File());
    }
    SetText(buffer);
}

// --- cMenuConflictCheck -------------------------------------------------------

cMenuConflictCheck::cMenuConflictCheck()
:cOsdMenu("", 4, 12, 4, 5, 30)
{
#if VDRVERSNUM >= 10734
  SetMenuCategory(mcTimerEdit);
#endif
    showAll = false;
    lastSel = -1;
    BuildList();
    Update();
}

void cMenuConflictCheck::Update()
{
    if (conflictCheck.numConflicts > 0)
    {
	if (conflictCheck.numConflicts==conflictCheck.relevantConflicts)
	    SetHelp(conflictCheck.relevantConflicts?tr("Button$Details"):NULL, NULL, NULL, NULL);
	else if (showAll)
	    SetHelp(tr("Button$Details"), NULL, NULL, tr("Button$Filter"));
	else
	    SetHelp(conflictCheck.relevantConflicts?tr("Button$Details"):NULL, NULL, NULL, tr("Button$Show all"));
    }
    else
	SetHelp(NULL, NULL, NULL, NULL);

    cString buffer = cString::sprintf("%s - %d/%d %s", tr("Timer conflicts"),
	     showAll?conflictCheck.numConflicts:conflictCheck.relevantConflicts,
	     conflictCheck.numConflicts,
	     tr("conflicts"));
    SetTitle(buffer);
    Display();
}

bool cMenuConflictCheck::BuildList()
{
    Clear();
    conflictCheck.Check();

    if ((showAll && conflictCheck.numConflicts > 0) ||
	conflictCheck.relevantConflicts > 0)
    {
	cList<cConflictCheckTime>* failedList = conflictCheck.GetFailed();
	for(cConflictCheckTime* ct = failedList->First(); ct; ct = failedList->Next(ct))
	{
	    if (!showAll && ct->ignore) continue;
	    Add(new cMenuConflictCheckItem(ct));
	    std::set<cConflictCheckTimerObj*,TimerObjSort>::iterator it;
	    for (it = ct->failedTimers.begin(); it != ct->failedTimers.end(); ++it)
		if (!(*it)->ignore || showAll)
		    Add(new cMenuConflictCheckItem(ct, *it));
	}
    }
    else
    {
	cOsdItem* pInfoItem = new cOsdItem(conflictCheck.numConflicts==0?tr("no conflicts!"):tr("no important conflicts!"));
	pInfoItem->SetSelectable(false);
	Add(pInfoItem);
    }
    SetCurrent(Get(lastSel));
    return false;
}

cConflictCheckTimerObj* cMenuConflictCheck::CurrentTimerObj(void)
{
    cMenuConflictCheckItem *item = (cMenuConflictCheckItem *)Get(Current());
    return (item && item->Selectable())? item->timerObj : NULL;
}

eOSState cMenuConflictCheck::ProcessKey(eKeys Key)
{
    bool HadSubMenu = HasSubMenu();
    eOSState state = cOsdMenu::ProcessKey(Key);
    if (state == osUnknown)
    {
       switch (Key)
       {
          case kOk:
             if (Count() == 1)
                return osBack;
          case kRed:
             if (CurrentTimerObj())
                state = AddSubMenu(new cMenuConflictCheckDetails(CurrentTimerObj(), &conflictCheck));
             break;
          case kBlue:
             showAll = !showAll;
             BuildList();
             Update();
             state = osContinue;
             break;
          default: break;
       }
    }
    if (HadSubMenu && !HasSubMenu()) // Update conflict list
    {
       lastSel = Current();
       BuildList();
       Update();
    }
    return state;
}

// --- cMenuConflictCheckDetailsItem -------------------------------------------------------
cMenuConflictCheckDetailsItem::cMenuConflictCheckDetailsItem(cConflictCheckTimerObj* TimerObj)
{
    timerObj = TimerObj;
#if VDRVERSNUM > 20300
    LOCK_TIMERS_READ;
    const cTimers *vdrtimers = Timers;
#else
    cTimers *vdrtimers = &Timers;
#endif
    hasTimer = timerObj->OrigTimer(vdrtimers)?timerObj->OrigTimer(vdrtimers)->HasFlags(tfActive):false;
    Update(vdrtimers, true);
}

bool cMenuConflictCheckDetailsItem::Update(const cTimers* vdrtimers, bool Force)
{
    bool oldhasTimer = hasTimer;
    hasTimer = timerObj->OrigTimer(vdrtimers)?timerObj->OrigTimer(vdrtimers)->HasFlags(tfActive):false;
    if (Force || hasTimer != oldhasTimer)
    {
	const cTimer* timer = timerObj->timer;
	char device[2]="";
	if (hasTimer)
	{
	    if (!timerObj->conflCheckTime && timerObj->device > -1)
		sprintf(device, "%d", timerObj->device+1);
	    else
		strcpy(device, tr("C"));
	}

	cString buffer = cString::sprintf("%s\t%d\t%s - %s\t%d\t%s\t%s", hasTimer?">":"", timer->Channel()->Number(), TIMESTRING(timerObj->start), TIMESTRING(timerObj->stop), timer->Priority(), device, timer->File());

	SetText(buffer);
    }
    return true;
}

// --- cMenuConflictCheckDetails -------------------------------------------------------

cMenuConflictCheckDetails::cMenuConflictCheckDetails(cConflictCheckTimerObj* TimerObj, cConflictCheck* ConflictCheck)
:cOsdMenu(tr("Timer conflicts"), 2, 4, 13, 3, 2)
{
#if VDRVERSNUM >= 10734
  SetMenuCategory(mcTimerEdit);
#endif
    timerObj = TimerObj;
    checktime = timerObj->conflCheckTime;
    conflictCheck = ConflictCheck;
    BuildList();
    SetHelpKeys();
    
    int recPart = timerObj->recDuration * 100 / (timerObj->stop - timerObj->start);
    cString buffer = cString::sprintf("%s - %s - %d%%", DATESTRING(checktime->evaltime), TIMESTRING(checktime->evaltime), recPart);
    SetTitle(buffer);
}

bool cMenuConflictCheckDetails::BuildList()
{
    Clear();
    int sel = -1;

    std::set<cConflictCheckTimerObj*,TimerObjSort>::iterator it;
    if (timerObj->concurrentTimers)
	for (it = timerObj->concurrentTimers->begin(); it != timerObj->concurrentTimers->end(); ++it)
	{
	    Add(new cMenuConflictCheckDetailsItem(*it));
        if ((*it)->Event())
           eventObjects.Add((*it)->Event());
	    if ((*it) == timerObj) sel = Count()-1;
	}
    SetCurrent(Get(sel));
    return true;
}

void cMenuConflictCheckDetails::SetHelpKeys()
{
    cConflictCheckTimerObj* curTimerObj = CurrentTimerObj();
    bool hasTimer = true;
    bool hasEvent = false;
    if (curTimerObj) 
    {
	hasTimer = curTimerObj->timer->HasFlags(tfActive);
        hasEvent = curTimerObj->Event();
    }
    SetHelp(hasEvent?tr("Button$Repeats"):NULL, trVDR("Button$On/Off"), hasTimer?trVDR("Button$Delete"):NULL, tr("Button$Commands"));
}

cConflictCheckTimerObj* cMenuConflictCheckDetails::CurrentTimerObj(void)
{
    cMenuConflictCheckDetailsItem *item = (cMenuConflictCheckDetailsItem *)Get(Current());
    return item ? item->timerObj : NULL;
}

eOSState cMenuConflictCheckDetails::Commands(eKeys Key)
{
    if (HasSubMenu() || Count() == 0)
	return osContinue;
    cConflictCheckTimerObj* curTimerObj = CurrentTimerObj();
    if (curTimerObj && curTimerObj->Event())
    {
        cMenuSearchCommands *menu;
        eOSState state = AddSubMenu(menu = new cMenuSearchCommands(tr("EPG Commands"), curTimerObj->Event(), true));
        if (Key != kNone)
	    state = menu->ProcessKey(Key);
        return state;
    }
    return osContinue;
}

eOSState cMenuConflictCheckDetails::ToggleTimer(cConflictCheckTimerObj* TimerObj)
{
  cTimers *vdrtimers;
#if VDRVERSNUM > 20300
  LOCK_TIMERS_WRITE;
  Timers->SetExplicitModify();
  vdrtimers = Timers;
#else
  vdrtimers = &Timers;
#endif
  if (!TimerObj || !TimerObj->OrigTimer(vdrtimers)) return osContinue;
  TimerObj->OrigTimer(vdrtimers)->OnOff();  // Toggles Timer Flag
  vdrtimers->SetModified();
  Update(vdrtimers);
  Display();
  return osContinue;
}

bool cMenuConflictCheckDetails::Update(const cTimers* vdrtimers, bool Force)
{
    bool result = false;
    for (cOsdItem *item = First(); item; item = Next(item)) {
	if (item->Selectable() && ((cMenuConflictCheckDetailsItem *)item)->Update(vdrtimers, Force))
	    result = true;
    }
    return result;
}

eOSState cMenuConflictCheckDetails::DeleteTimer(cConflictCheckTimerObj* TimerObj)
{
#if VDRVERSNUM > 20300
  LOCK_TIMERS_WRITE;
  Timers->SetExplicitModify();
  cTimers *vdrtimers = Timers;
#else
  cTimers *vdrtimers = &Timers;
#endif
  cTimer* timer = TimerObj->OrigTimer(vdrtimers);
  // Check if this timer is active:
  if (timer) {
    if (Interface->Confirm(trVDR("Delete timer?"))) {
      if (timer->Recording()) {
	if (Interface->Confirm(trVDR("Timer still recording - really delete?"))) {
	  timer->Skip();
#if VDRVERSNUM > 20300
	  cRecordControls::Process(vdrtimers, time(NULL));
#else
	  cRecordControls::Process(time(NULL));
#endif
	}
	else
	  return osContinue;
      }
      LogFile.iSysLog("deleting timer %s", *timer->ToDescr());
      vdrtimers->Del(timer);
      cOsdMenu::Del(Current());
      vdrtimers->SetModified();
      Display();
      return osBack;
    }
  }
  return osContinue;
}


eOSState cMenuConflictCheckDetails::ShowSummary()
{
    cConflictCheckTimerObj* curTimerObj = CurrentTimerObj();
    if (!curTimerObj)
	return osContinue;

    const cEvent *ei = curTimerObj->Event();
    if (ei)
    {
#if VDRVERSNUM > 20300
	LOCK_CHANNELS_READ;
	const cChannels *vdrchannels = Channels;
#else
	cChannels *vdrchannels = &Channels;
#endif
	const cChannel *channel = vdrchannels->GetByChannelID(ei->ChannelID(), true, true);
	if (channel)
	    return AddSubMenu(new cMenuEventSearchSimple(ei, eventObjects));
    }
    return osContinue;
}

void cMenuConflictCheckDetails::UpdateCurrent()
{
   cEventObj* cureventObj = eventObjects.GetCurrent();
   if (cureventObj && cureventObj->Event())
      for (cMenuConflictCheckDetailsItem *item = (cMenuConflictCheckDetailsItem *)First(); item; item = (cMenuConflictCheckDetailsItem *)Next(item))
         if (item->Selectable() && item->timerObj && item->timerObj->Event() == cureventObj->Event())
         {
            cureventObj->Select(false);
            SetCurrent(item);
            Display();
            break;
         }
}

eOSState cMenuConflictCheckDetails::ProcessKey(eKeys Key)
{
    bool HadSubMenu = HasSubMenu();
    eOSState state = cOsdMenu::ProcessKey(Key);

    if (!HasSubMenu() && HadSubMenu) // navigation in summary could have changed current item, so update it
       UpdateCurrent();

    if (state == osUnknown)
    {
	switch (Key)
	{
	    case k1...k9:
		if (!HasSubMenu())
		    return Commands(Key);
		else
		    state = osContinue;
		break;
	    case kOk:
		if (!HasSubMenu())
		    return ShowSummary();
		else
		    state = osContinue;
		break;
	    case kRed:
		if(!HasSubMenu())
        {
           if (CurrentTimerObj() && CurrentTimerObj()->Event())
              return Commands(k1);
           else
              state = osContinue;
        }
        else
           state = osContinue;
        break;
	    case kGreen:
		if(!HasSubMenu())
           state = ToggleTimer(CurrentTimerObj());
		break;
	    case kYellow:
		if(!HasSubMenu())
           state = DeleteTimer(CurrentTimerObj());
		break;
	    case kBlue:
		if(!HasSubMenu())
        {
           if (CurrentTimerObj() && CurrentTimerObj()->Event())
              return AddSubMenu(new cMenuSearchCommands(tr("EPG Commands"),CurrentTimerObj()->Event()));
           else
              state = osContinue;
        }
		else
		    state = osContinue;
		break;
	    default: break;
	}
    }
    if (!HasSubMenu())
    {
	// perhaps a timer was deleted, so first check this
	if (conflictCheck)
	{
	    std::set<cConflictCheckTimerObj*,TimerObjSort>::iterator it;
	    if (timerObj->concurrentTimers)
	    {
		for (it = timerObj->concurrentTimers->begin(); it != timerObj->concurrentTimers->end(); ++it)
		{
		    bool found = false;
#if VDRVERSNUM > 20300
		    LOCK_TIMERS_WRITE;
		    cTimers *vdrtimers = Timers;
#else
		    cTimers *vdrtimers = &Timers;
#endif
		    for(cTimer* checkT = vdrtimers->First(); checkT; checkT = vdrtimers->Next(checkT))
		    {
			checkT->Matches();
			if (checkT == (*it)->OrigTimer(vdrtimers)) // ok -> found, check for changes
			{
			    if (checkT->IsSingleEvent())
			    {
				if (checkT->StartTime() == (*it)->start && checkT->StopTime() == (*it)->stop)
				{
				    found = true;
				    break;
				}
			    }
			    else // repeating timer
			    {
				if (checkT->DayMatches((*it)->start)) // same day?
				{
				    int begin  = cTimer::TimeToInt(checkT->Start()); // seconds from midnight
				    int length = cTimer::TimeToInt(checkT->Stop()) - begin;
				    if (length < 0)
					length += SECSINDAY;

				    time_t Start = cTimer::SetTime((*it)->start, cTimer::TimeToInt(checkT->Start()));
				    if (Start == (*it)->start && (*it)->stop == (*it)->start + length)
					found = true;
				}
			    }
			}
		    }
		    if (!found) return osBack;
		}
	    }
	}

	if (Key != kNone)
	    SetHelpKeys();
#if VDRVERSNUM > 20300
        LOCK_TIMERS_READ;
        const cTimers *vdrtimers = Timers;
#else
        cTimers *vdrtimers = &Timers;
#endif
	if ((HadSubMenu || gl_TimerProgged) && Update(vdrtimers, true))
	{
	    if (gl_TimerProgged) // when using epgsearch's timer edit menu, update is delayed because of SVDRP
	    {
		gl_TimerProgged = 0;
		SetHelpKeys();
	    }
	    Display();
	}
    }
    return state;
}