Horizontal Line indicator - Custom

Requiring a custom indicator that paints a horizontal line for every candle close(in any timeframe) - have the option to show/hide in different timeframe for the lines drawn by the custom indicator!

 Requirement:

Upon candle close:

 - calculate that candle's [HIGH-LOW]/2 === VALUE X

 - calculate the range of [CLOSE-OPEN OR OPEN-CLOSE] depending on long/short candle ===== RANGE Y

IF(For that candle that just closed)

 VALUE X is within(OR equals) RANGE Y, then DRAW Horizontal Line with VALUE = X (make sure there is option for color selection for the line)

 ELSE

Do not draw that line.

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 More complex criteria to add to the above:

there must be a validation check on existing horizontal lines drawn to "delete" itself IF the value of such lines falls within RANGE Y of new candle closed.

The existing line drawn can still stay if stays outside the range of RANGE Y, and create a "spike" on support/resistance