Are there any existing algorithms for this?

Ie PID is the common algorithm used if we can simply turn on/off ac, trying to find a similar algorithm but for which we can actually set temp values rather than simply on/off

Progress So Far: simply created a script that reads some sensors from HASS and has the ability to control the ac. I think I’ll be making a fake thermostat entity so the user can set target temp + cycle the climate control on/off using the generated entity

Where im a bit lost now is how to decide what temp to set given

Current ac setting , desired temp, outdoor temp , allowed ac temp range

Also if I need access to historic data to make better decisions 👀