I have a plant that does not like the sun, help!?

i have a goji plant that is next to a window indoors where the sun does not usually shine. i give this plant artificial light all day and it does fine. but when i woke up this morning and found the sun shining on the top part of the plant, the top part wilted and the shaded part of the plant was fine. the soil was not dry either. However, tonight the plant stopped wilting. i want to bring it outdoors in the summer but i am scared that the sun will kill it by making it wilt. What should I do?