Simple Supply and Demand Zones Forex Indicator

The purpose of this custom indicator is to display supply demand zones based on a simple set of criteria identifying peaks/bottoms via a 3-candle formation. Within the 3-candle formation, specified conditions using values of OHLC of previous candle, current candle and the next candle is required. 

Upon the completion of drawing a new zone upon the third candle’s closing, the indicator must be able to check if there is any previous zone that is within the range of the new zone, which is the high/low to the open/close of the candle depending on the validation. The detection could be using values range or objects detection such as trendline or rectangle, so long it works.