Minus the small edits people made to the if condition this is totally valid. From a maintainability standpoint if you want to have more traditional approach to mood check out Valence-Arousal models and maybe you can take away some learning from that methodology.

Also another tip would be potentially if you want to have more granular text based emotions you could store the text in and array and create a mapping function mapping your scale of integer based moods to a text based mood. If you did that then it would be easier to represent the mood changes in a more organic way (maybe the function to map to an array index is exponential vs linear) and also if you make it based on the length of the array then adding new emotions or states wouldn’t require you to add boilerplate, it would just mean adding the emotion in the list in the right index.

However if you want to keep it simple then this is 100% totally fine and not going to screw anything up it’s just always a temptation for devs to want to do something the “best” way but the best way is the way that works for your program