How to add AI in a non-melee map

so i had trouble adding ai to my custom map, how do i add Ai? help

 

Do one of these three:

1) Either you create a AI with the AI Editor, save it and import it to your map.
The AI Editor

2) You create an AI using JASS AI with Notepad++.
How to create a campaign AI

3) You create your race out of the normal melee units and the AI will train those units, it will not recognise any custom units you add.

 

My map is a hero defense map how do i make them choose heroes and buy items

 

Order them via triggers. Or simply create and give the hero to them.

For items, you can order them via triggers, or you can give them the item and take gold.

 

uhhm how do i create those triggers? btw the heroes are in tavern.
they would pick random heroes in a tavern i got 3 taverns.
I would try to create triggers, maybe some of them will work.