A 32-year-old woman complains of redness, burning, and sensation of a foreign body in her right eye. The disease onset was sudden.Objectively, visual acuity of the right and left eye = 10, In the right eye, hyperemia and edema of the conjunctiva, surface injection, and purulent discharge in the conjunctival sac are observed. The cornea is transparent, the color and pattern of the iris are unchanged, the pupil is mobile. What is the most likely diagnosis in this case?