How does Procopius portray Belisarius, Justinian, and the empress Theodora in this posthumous historical account and why does he do so?

How does Procopius portray Belisarius, Justinian, and the empress Theodora in this posthumous historical account and why does he do so?

Can the Justinian of this secret historical work be reconciled with the praiseworthy emperor of earlier works? Why did Procopius write The Secret History? Discuss, analyze, and explain.