///|
/// Escape text for HTML contexts without relying on a runtime or DOM.
pub fn escape_html(value : String) -> String {
  let out = StringBuilder::new()
  for c in value {
    match c {
      '&' => out.write_string("&")
      '<' => out.write_string("<")
      '>' => out.write_string(">")
      '"' => out.write_string(""")
      '\'' => out.write_string("'")
      _ => out.write_string(c.to_string())
    }
  }
  out.to_string()
}

///|
pub fn Report::to_html(self : Report) -> String {
  let out = StringBuilder::new()
  out.write_string("",
  )
  for item in self.lines {
    out.write_string("")
  }
  out.write_string("
")
  out.write_string(escape_html(statement_name(self.kind)))
  out.write_string(" — ")
  out.write_string(escape_html(self.period))
  out.write_string(
    "
Line
Amount
Entries
")
    out.write_string(escape_html(item.line))
    out.write_string("
")
    out.write_string(item.amount.to_string())
    out.write_string("
")
    out.write_string(item.entries.to_string())
    out.write_string("
Total
")
  out.write_string(self.total.to_string())
  out.write_string("
")
  out.to_string()
}

///|
pub fn report_document(report : Report, title : String) -> String {
  "" +
  report.to_html() +
  ""
}

///|
pub fn render_variances(variances : Array[Variance]) -> String {
  let out = StringBuilder::new()
  out.write_string(
    "| Line | Current | Prior | Variance | Percent |\n| --- | ---: | ---: | ---: | ---: |\n",
  )
  for item in variances {
    out.write_string("| ")
    out.write_string(item.line)
    out.write_string(" | ")
    out.write_string(item.current.to_string())
    out.write_string(" | ")
    out.write_string(item.prior.to_string())
    out.write_string(" | ")
    out.write_string(item.absolute.to_string())
    out.write_string(" | ")
    match item.percent {
      Some(value) => out.write_string(value.to_string())
      None => out.write_string("n/a")
    }
    out.write_string(" |\n")
  }
  out.to_string()
}