An engulfing candle on the weekly close is good for the index as it has closed near the new high.
The coming week can give a bullish move too. It has started trading above the resistance level of 21800 and closed somewhat 100 points higher after the break out.
Major support levels :- 21720, 21600 and 21500
Still market is trading above the break out, either it will continue the up move or will show a break out failure.
Watch for the market as there are chance of it testing 22k levels first and then giving a retracement.
Initiate trade as per the setup and price action. Indicator may show otherwise in smaller time frame. So go for higher time frame for analysis.