#import "@preview/cetz:0.2.2": draw
#import "consts.typ": *

#let PAR-SPECIALS = "?[]"

#let _par(name, display-name: auto, from-start: true, invisible: false) = {
  return ((
    type: "par",
    name: name,
    display-name: if display-name == auto {name} else {display-name},
    from-start: from-start,
    invisible: invisible
  ),)
}

#let _exists(participants, name) = {
  if name == "?" or name == "[" or name == "]" {
    return true
  }

  for p in participants {
    if name == p.name {
      return true
    }
  }
  return false
}

#let render(x-pos, p, y: 0) = {
  draw.content(
    (x-pos.at(p.i), y),
    p.display-name,
    name: p.name,
    frame: "rect",
    padding: PAR-PAD,
    anchor: "south"
  )
}