HH HL LL LH Indicator MT4

Dear Programmers,

I need an HH HL LL LH Indicator for MT4. The requirement is as follows.

• Looks: this picture looks like what I want, in candlestick for sure instead of bar chart. I do not need the "DT (Double Top)" and the horizontal line. Just the HH HL LL LH label/text.

• Input switch version: please provide input parameter to switch, if we want the structure (HH HL LL LH) refers to body close/open version or high/low (wick) version. make the body close version as default.
• Alert (sound, email, notification, on-off able) when structure changed. Structure changed example: let's say down structure LL LH is maintained, then structure change when HH is created. In other words, structure change happened when a candle closed/a wick higher (depends on which version selected) than LH. That is when the alert should happen.
• The HH HL LL LH price/candle position should be stored or can be called for future modification needs.
• Please make the code neat, readable, and adjustable by others.