// 手册模板 —— 代码高亮、提示框 + 封面页 + 三线表

#import "@preview/codly:1.3.0": *
#import "@preview/showybox:2.0.4": showybox

#let primary   = rgb("#1F4E79")
#let secondary = rgb("#2C3E50")
#let accent    = rgb("#3467A8")
#let light     = rgb("#96A0AA")
#let rule-blue = accent.lighten(46%)

#let info-color    = rgb("#0EA5E9")
#let tip-color     = rgb("#10B981")
#let warn-color    = rgb("#F59E0B")
#let danger-color  = rgb("#EF4444")

#let cover-page(title, subtitle, date) = {
  page(margin: (top: 3cm, bottom: 3cm, left: 3cm, right: 3cm))[
    #align(center + horizon)[
      #v(2cm)
      #text(size: 28pt, weight: "bold", fill: primary, title)
      #if subtitle != none {
        v(0.8cm)
        text(size: 16pt, fill: accent, subtitle)
      }
      #if date != none {
        v(2cm)
        text(size: 12pt, fill: light, date)
      }
    ]
  ]
}

#let three-line-table(..args) = {
  let kwargs = args.named()
  let children = args.pos()

  let new_children = ()
  let header_seen = false

  for child in children {
    if child.func() == table.header {
      new_children.push(table.hline(stroke: 1.25pt + rule-blue))
      new_children.push(child)
      header_seen = true
    } else if header_seen and child.func() == table.hline {
      new_children.push(table.hline(stroke: 0.75pt + rule-blue))
      header_seen = false
    } else {
      new_children.push(child)
    }
  }
  new_children.push(table.hline(stroke: 1.25pt + rule-blue))

  kwargs.stroke = none
  kwargs.inset = (x: 8pt, y: 5pt)

  table(..new_children, ..kwargs)
}

#let manual(
  title: none,
  subtitle: none,
  date: none,
  body,
) = {
  if title != none {
    cover-page(title, subtitle, date)
    pagebreak()
  }

  set text(
    font: (
      "Cambria",
      "PingFang SC",
    ),
    size: 10pt,
    lang: "zh",
  )

  show raw: set text(font: (
    "Courier New",
    "Menlo",
    "Monaco",
    "SimSun",
  ))

  // 10pt + code blocks: a touch denser than default 11pt, still spacing > leading
  set par(justify: true, leading: 0.76em, spacing: 1.08em)

  show: codly-init
  codly(
    stroke: 0.5pt + rule-blue,
    fill: rgb("#F8F9FA"),
    zebra-fill: none,
    lang-stroke: none,
    lang-fill: light.lighten(60%),
    radius: 4pt,
    number-format: n => text(fill: rgb("#6E7681"), str(n)),
    number-align: right,
  )

  // Tight list: spacing close to leading (0.76em) but not below it
  set list(tight: true, indent: 1.2em, body-indent: 0.45em, spacing: 0.72em)
  set enum(tight: true, indent: 1.2em, body-indent: 0.45em, spacing: 0.72em)

  // Same heading vertical scale as textbook (long-form); H sizes differ by template
  show heading.where(level: 1): it => {
    v(1.45em)
    text(size: 18pt, weight: "bold", fill: primary, it)
    v(0.55em)
  }

  show heading.where(level: 2): it => {
    v(1.1em)
    text(size: 13pt, weight: "bold", fill: accent, it)
    v(0.5em)
  }

  show heading.where(level: 3): it => {
    v(0.8em)
    text(size: 11pt, weight: "bold", fill: secondary, it)
    v(0.4em)
  }

  set heading(numbering: none)

  set page(
    paper: "a4",
    margin: (top: 2.0cm, bottom: 2.0cm, left: 2.0cm, right: 2.0cm),
    header: context {
      let h = query(selector(heading.where(level: 1)))
        .filter(it => it.location().page() <= here().page())
      if h.len() > 0 {
        let current = h.last()
        align(right)[
          #text(size: 8pt, fill: light)[
            #current.body
          ]
        ]
      }
    },
    footer: context {
      align(center)[
        #text(size: 8pt, fill: light)[
          — #counter(page).display("1") —
        ]
      ]
    },
  )

  show link: it => text(fill: accent, it)

  outline(title: "目录", depth: 2)
  pagebreak()

  body
}

#let info-box(title: "Info", body) = showybox(
  title: title,
  title-style: (color: white, weight: "bold"),
  frame: (border-color: info-color, title-color: info-color, thickness: 1pt, radius: 4pt),
  body
)

#let tip-box(title: "Tip", body) = showybox(
  title: title,
  title-style: (color: white, weight: "bold"),
  frame: (border-color: tip-color, title-color: tip-color, thickness: 1pt, radius: 4pt),
  body
)

#let warn-box(title: "Warning", body) = showybox(
  title: title,
  title-style: (color: white, weight: "bold"),
  frame: (border-color: warn-color, title-color: warn-color, thickness: 1pt, radius: 4pt),
  body
)

#let danger-box(title: "Danger", body) = showybox(
  title: title,
  title-style: (color: white, weight: "bold"),
  frame: (border-color: danger-color, title-color: danger-color, thickness: 1pt, radius: 4pt),
  body
)