I think early Christians and many Christians today believe it is literal. Some Christians call it a "glorified" body which makes it possible to have more capabilities than the run of the mill physical body. I wonder what the Pharisees believed about the resurrection? If they thought it was the same physical body? I have no problem in thinking that people in those days did think God could and would raise the same physical body. They could have been wrong. They could be taking things way too literal, but I think the Christians and maybe the Pharisees also, believed they would be resurrected into the same physical body.
The earliest Christians who knew Jesus and were around after his crucifixion were unlikely to have believed in a literal resurrection given it never happened. Nor do we have any evidence of such beliefs until Paul’s first Epistle to Corinthians 20 years later. The key passage is from 1 Corinthians 15.
The phrase glorified or honour is used a great deal in the Gospel of John, especially in regards the resurrection. Consider chapter 12 that outlines the resurrection of Lazarus:
These things understood not his disciples at the first: but when Jesus was glorified, then remembered they that these things were written of him, and that they had done these things unto him.
John 12:16
And Jesus answered them, saying, The hour is come, that the Son of man should be glorified.
John 12:23
Father, glorify thy name. Then came there a voice from heaven, saying, I have both glorified it, and will glorify it again.
John 12:28
And I, if I be lifted up from the earth, will draw all men unto me.
John 12:32
Not a single Pharisee believed Jesus to have been resurrected. You would think with such an extraordinary event along with the many who arose from their graves (Matthew 27:51-54) that history would leave a record?
I still don't see any reason why all four gospels went straight into the resurrection story from the crucifixion story as if it was a real event, if it was only meant to be a "metaphor." If the resurrection is not true, I have no problem in believing the writers made it up. How they possibly could have pulled it off, I don't know. You have said that hiding the body is very much possible. So let's say that did happen. Jesus is dead. His body is taken and buried in a secret tomb somewhere.
The Gospel accounts were written 35 - 70 years after the Christ was crucified. Is it that hard to believe the accounts are redacted and embellished for the purpose of inspiring the faithful?
John 20:31
But... the story and the oral traditions say that the apostles and others saw him alive? And the early Church taught that. How could they have fooled everybody and gotten all those that knew that Jesus never appeared to go along with it? Since some of them must have still been alive when the gospels got written? Anyway, it might have all kinds of metaphorical meanings, but if he didn't rise again, and Baha'is say he didn't, I still see it as a lie, a hoax and a coverup.
How does any myth in religion become established? I don’t see there is anything special or unique about Christian mythology as opposed to myths in Hinduism, Islam or Judaism. The only difference lies in so many of your countrymen dogmatically insisting it to be literally true.