#! /usr/bin/env bash

version=0.10.0-a.0.z
date="$(date +"%B %Y")"

trap 'exit 1' ERR
set -o errtrace # Trap in functions.

function info () { echo "$*" 1>&2; }
function error () { info "$*"; exit 1; }

while [ $# -gt 0 ]; do
  case $1 in
    --clean)
      rm -f build2-toolchain-intro.xhtml   \
         build2-toolchain-intro.tex        \
         build2-toolchain-intro*.ps        \
         build2-toolchain-intro*.pdf
      rm -f build2-toolchain-install.xhtml \
         build2-toolchain-install.tex      \
         build2-toolchain-install*.ps      \
         build2-toolchain-install*.pdf
      exit 0
      ;;
    *)
      error "unexpected $1"
      ;;
  esac
done

function gen () # <name> <prefix> <...>
{
  local n="$1"; shift
  local prefix="$1"; shift

  gen_html "$n" "$prefix" "${@}"
  gen_latex "$n" "$prefix" "a4" "${@}"
  gen_latex "$n" "$prefix" "letter" "${@}"
}

function gen_html () # <name> <prefix> <...>
{
  local n="$1"; shift
  local prefix="$1"; shift

  cli -I .. \
-v version="$(echo "$version" | sed -e 's/^\([^.]*\.[^.]*\).*/\1/')" \
-v date="$date" \
--generate-html --html-suffix .xhtml \
--html-prologue-file doc-prologue.xhtml \
--html-epilogue-file doc-epilogue.xhtml \
--link-regex '%b([-.].+)%../../build2/doc/b$1%' \
--link-regex '%bpkg([-.].+)%../../bpkg/doc/bpkg$1%' \
--link-regex '%bdep([-.].+)%../../bdep/doc/bdep$1%' \
--link-regex '%b(#.+)?%../../build2/doc/build2-build-system-manual.xhtml$1%' \
--link-regex '%bpkg(#.+)?%../../bpkg/doc/build2-package-manager-manual.xhtml$1%' \
--link-regex '%bbot(#.+)?%../../bbot/doc/build2-build-bot-manual.xhtml$1%' \
--link-regex '%testscript(#.+)?%../../build2/doc/build2-testscript-manual.xhtml$1%' \
--output-prefix "$prefix" "${@}" $n.cli
}

function run_pdflatex () # <name> <paper>
{
  local n="$1"
  local paper="$2"

  if [ "$paper" == "letter" ]; then
    sed -i 's/a4paper/letterpaper/' "$n.tex"
  fi

  pdflatex -output-format dvi -jobname="$n-$paper" "$n"
  dvips "$n-$paper.dvi"
  pdflatex -output-format pdf -jobname="$n-$paper" "$n"
  rm -f "$n-$paper".{aux,dvi,log,out,toc}
}

function gen_latex () # <name> <prefix> <paper> <...>
{
  local n="$1"; shift
  local prefix="$1"; shift
  local paper="$1"; shift

  cli -I .. \
-v version="$(echo "$version" | sed -e 's/^\([^.]*\.[^.]*\).*/\1/')" \
-v date="$date" \
--generate-latex \
--latex-prologue-file doc-prologue.tex \
--latex-epilogue-file doc-epilogue.tex \
--link-regex '%bbot(#.+)?%../../bbot/doc/build2-build-bot-manual-'"$paper"'.pdf$1%' \
--link-regex '%bpkg([-.].+)?\.pdf%../../bpkg/doc/bpkg$1-'"$paper"'.pdf%' \
--link-regex '%bpkg(#.+)?%../../bpkg/doc/build2-package-manager-manual-'"$paper"'.pdf$1%' \
--link-regex '%bdep([-.].+)?\.pdf%../../bdep/doc/bdep$1-'"$paper"'.pdf%' \
--link-regex '%testscript(#.+)?%../../build2/doc/build2-testscript-manual-'"$paper"'.pdf$1%' \
--link-regex '%b([-.].+)%../../build2/doc/b-'"$paper"'$1%' \
--link-regex '%b(#.+)?%../../build2/doc/build2-build-system-manual-'"$paper"'.pdf$1%' \
--output-prefix "$prefix" "${@}" $n.cli

  run_pdflatex "$prefix$n" "$paper"
}

gen intro build2-toolchain-
#gen intro1

# Auto-heading doesn't work since it is broken into multiple doc strings.
#
gen install build2-toolchain- --html-heading-map 2=h2

# Generate INSTALL/BOOTSTRAP/UPGRADE file in ../
#
function gen_txt () # <name>
{
  cli --generate-txt --omit-link-check --link-regex '%#(.*)%\U\1\E file%' \
-o .. --txt-suffix "" ../$1.cli
}

gen_txt INSTALL
gen_txt UPGRADE
gen_txt BOOTSTRAP-MACOSX
gen_txt BOOTSTRAP-MINGW
gen_txt BOOTSTRAP-MSVC
gen_txt BOOTSTRAP-UNIX
gen_txt BOOTSTRAP-WINDOWS