What is the grammatical analysis (إعراب) of the word "wa-ka'anna" (ويكأن) as it appears in Surat Al-Qasas?

The parsing of the word (وَيْكَأَنَّ) is a matter of disagreement. Some say it is composed of (وَيْ), for wonder, and (كَأَنَّ), for similitude, and the meaning is: "How similar is the matter to the abundance of provision." Others say it is (وَيْكَ) meaning "woe to you" and (أَنَّ), and its estimation is: "Woe to you, know that Allah." Others say it is composed of (وَيْ), a verb-noun meaning "I wonder," and (الْكَافُ) for address, and (أَنَّ) the مصدرية particle. Still others say it is composed of four words: (وَيْلٌ) (woe), (الْكَافُ) (you), (اعْلَمْ) (know), and (أَنَّ) (that). The meaning of the verse, according to all these interpretations, is: those who wished for Qarun's status regretted it, marveled at the hidden ways of Allah's actions in His creation, and realized the necessity of being content with the decreed provision.