// rPubs Book Template — main entry point
// Reads structured content from JSON and renders a complete pocket book.
// Works with any format file (A6, A7, digest, etc.)

#import "../lib/series-style.typ": apply-series-style, series-colors, series-fonts, series-rule, series-separator

#let data = json(sys.inputs.at("data-path"))

// Apply series typography
#show: apply-series-style

// --- Cover Page ---
#page(
  numbering: none,
  margin: (x: 15mm, y: 20mm),
  fill: series-colors.cover-bg,
)[
  #set text(fill: series-colors.cover-fg)
  #v(1fr)

  #align(center)[
    #block(width: 100%)[
      #set text(font: series-fonts.heading)

      // Title
      #text(size: 18pt, weight: "bold")[
        #data.title
      ]

      #if data.at("subtitle", default: none) != none {
        v(0.3em)
        text(size: 11pt, fill: series-colors.cover-fg.lighten(20%))[
          #data.subtitle
        ]
      }

      #v(1em)
      #line(length: 40%, stroke: 0.5pt + series-colors.cover-fg.darken(40%))
      #v(1em)

      // Author
      #if data.at("author", default: none) != none {
        text(size: 10pt)[
          #data.author
        ]
      }
    ]
  ]

  #v(1fr)

  #align(center)[
    #text(size: 7pt, fill: series-colors.cover-fg.darken(40%))[
      rpubs
    ]
  ]
]

// --- Table of Contents (if there are headings) ---
#let has-headings = data.sections.any(s => s.at("heading", default: none) != none)
#if has-headings {
  page(numbering: none)[
    #v(2em)
    #text(font: series-fonts.heading, size: 12pt, weight: "bold", fill: series-colors.accent)[Contents]
    #v(1em)
    #series-rule()
    #v(0.5em)

    #for (i, section) in data.sections.enumerate() {
      if section.at("heading", default: none) != none {
        let level = section.at("level", default: 1)
        let indent = (level - 1) * 1em
        pad(left: indent)[
          #text(size: 9pt)[#section.heading]
        ]
        v(0.2em)
      }
    }
  ]
}

// --- Body Content ---
#for section in data.sections {
  // Section heading
  if section.at("heading", default: none) != none {
    let level = section.at("level", default: 1)
    if level == 1 {
      heading(level: 1)[#section.heading]
    } else if level == 2 {
      heading(level: 2)[#section.heading]
    } else {
      heading(level: 3)[#section.heading]
    }
  }

  // Content blocks
  for item in section.at("blocks", default: ()) {
    if item.type == "paragraph" {
      par[#item.text]
    } else if item.type == "quote" {
      pad(left: 1em)[
        #block(
          inset: (left: 8pt, y: 4pt),
          stroke: (left: 2pt + series-colors.accent),
        )[
          #set text(style: "italic", size: 8.5pt)
          #item.text
          #if item.at("attribution", default: none) != none {
            v(0.2em)
            align(right)[
              #text(size: 7.5pt, fill: series-colors.muted)[— #item.attribution]
            ]
          }
        ]
      ]
    } else if item.type == "list" {
      if item.at("ordered", default: false) {
        enum(..item.items.map(entry => [#entry]))
      } else {
        list(..item.items.map(entry => [#entry]))
      }
    } else if item.type == "code" {
      raw(block: true, lang: item.at("language", default: none), item.code)
    } else if item.type == "separator" {
      series-separator()
    }
  }
}

// --- Colophon (back page) ---
#pagebreak()
#v(1fr)
#series-rule()
#v(0.5em)
#set text(size: 7pt, fill: series-colors.muted)

#if data.at("title", default: none) != none [
  *#data.title*
  #if data.at("author", default: none) != none [ by #data.author]
  #v(0.3em)
]

#[
  Typeset with rPubs. \
  Formatted for standardized pocket-book printing.
]

#v(0.5em)
#align(center)[
  #text(size: 6pt)[rpubs · drop in a document · get a book]
]