Was Buddha had a expected food poisoning?

Refer to the link below, the Buddha was poisoned in his last meal. Where can i find more information about this? Why was Buddha poisoned? > The Buddha died after eating a meal often called “pig’s delight” (Skt. > sukaramaddava, lit. “soft” or “mild pig”) offered to him by the > metalworker, Cunda Kammāraputta, in his mango grove in Pava, between > November and January, en route to Kapilavastu, the place of his birth. > The nature of this meal is uncertain. It might have been pork (the > Buddha was not vegetarian) or mushrooms There are many version of the cause of death. Which one found to be truth and supporting facts?