#import "palette.typ": *
#import "environment.typ": *
#import "math.typ": math_shorthands
#import "@preview/quick-maths:0.2.1": shorthands

#let header(title, author, scheme, margin) = (
  context {
    let p = here().page()

    // if p >= 1 {
      move(dx: - margin - 1pt, block(
        width: 100% + 2*margin + 2pt,
        height: margin,
        stroke: scheme.title.stroke,
        fill: scheme.title.bg,
      )[
        #place(top + left, block(inset: 30% * margin)[#text(title, scheme.title.fg) #text("- " + author, scheme.title.sub)])
        #place(top + right, block(inset: 30% * margin, text(scheme.title.fg)[Page #p / #counter(page).final().at(0)]))
      ])
    // }
  }
)

#let paper(
  body,
  title: "Titre",
  subtitle: none,
  author: "Lyes Saadi",
  scheme: light,
  margin: 2.5cm,
) = [
  #set document(title: title, author: author)
  #set page(fill: scheme.bg, footer: header(title, author, scheme, margin), margin: margin)
  #set text(fill: scheme.fg, font: "New Computer Modern")
  #set table(stroke: scheme.fg)
  #set heading(numbering: "I.1 -")

  #show heading: it => [
    #block[
      #place(text("#", size: 0.8em), dx: -0.8em)
      #it
    ]
  ]

  #show heading.where(level: 1): it => [
    #move(block(
      text(it, scheme.title.fg),
      width: 100% + 2*margin,
      inset: (left: margin, right: margin, top: 1em, bottom: 1em),
      fill: scheme.title.bg,
      stroke: (top: scheme.title.stroke, bottom: scheme.title.stroke),
    ), dx: -margin)
  ]

  #show <nonumber>: set heading(numbering: none)

  #show: shorthands.with(..math_shorthands)
  
  #move(block(
    [
      #if "img" in scheme.title.keys() and scheme.title.img != none {
      	place(top + right, image(scheme.title.img.path, height: margin), dx: margin, dy: -margin)
      }
      #align(center, text(size: 3em, title, fill: scheme.title.fg))
      #align(center, text(size: 2em, fill: scheme.title.sub, subtitle))
      #align(center, text(size: 1.5em, fill: scheme.title.sub, author))
    ],
    fill: scheme.title.bg,
    inset: margin,
    height: auto,
    width: 100% + 2 * margin,
    stroke: (bottom: scheme.title.stroke),
  ), dx: -margin, dy: -margin)

  #body
]

#let abstract(body, name: [Abstract.], margin: 2.5cm) = {
  align(center, move(dy: -margin/2, block(width: 75%, par(justify: true)[#text(name, weight: "bold") #text(style: "italic", body)])))
}