#! /bin/bash

set -e

###--------------------------------------------------------------------------
### Basic setup.

umask 002

sub=
mkdir -p $HOME$sub

: ${REPO=https://ftp.distorted.org.uk/pub/mdw/profile}

export PATH=/usr/local/bin:$HOME$sub/bin:/usr/bin:/usr/ccs/bin:/bin

###--------------------------------------------------------------------------
### Sort out command line.

xstuff= false=
while [ $# -gt 0 ]; do
  case "$1" in
    -x) xstuff=t;;
    -n) false=false;;
    --) shift; break;;
    -*) echo >&2 "$0: bad option"; exit 1;;
    *) break;;
  esac
  shift
done

###--------------------------------------------------------------------------
### Environment autoconfiguration.

## Find out where I am
here=$(pwd)

## Suss out how to print things
out=$(echo -n "foo"; echo "bar")
if [ "$out" = "foobar" ]; then
  echon="echo -n"
  echoc=""
else
  echon="echo"
  echoc='\c'
fi

## Find out how to fetch things over the net
$echon "Finding URL fetcher:$echoc"
if curl >/dev/null 2>&1 --version || [ $? -eq 2 ]; then
  GETURL="curl -fs -o"
  echo " curl."
elif wget >/dev/null 2>&1 --version; then
  GETURL="wget -q -O"
  echo " wget."
else
  echo " failed!"
  echo >&2 "$0: failed to find URL fetcher"
  exit 1
fi

###--------------------------------------------------------------------------
### Create the necessary directories.

echo "Creating directories..."
for i in bin lib/emacs src; do
  $echon "  $i:$echoc"
  if [ -d $HOME$sub/$i ]; then
    echo " already exists."
  else
    mkdir -p $HOME$sub/$i
    echo " done."
  fi
done
echo "	all done."

###--------------------------------------------------------------------------
### Install some more complicated programs.

echo "Installing packages..."
systems="
  mlib:crc-mktab
  checkpath:tmpdir
"
[ "$xstuff" ] && systems="$systems
  xtoys:xatom
"
for system in $systems; do
  set -- $(echo $system | tr : ' ')
  sys=$1 prog=$2
  $echon "  $sys:$echoc"
  if $false $prog >/dev/null 2>&1 --version; then
    echo " already installed."
  else
    ( set -e
      $echon " downloading$echoc"
      cd $HOME$sub/src
      rm -rf $sys.tar.gz $sys-$ver
      $GETURL $sys.tar.gz $REPO/$sys.tar.gz
      $echon " unpacking$echoc"
      dir=$(gzip -cd $sys.tar.gz | tar tf - | head -1)
      gzip -cd $sys.tar.gz | tar xf -
      $echon " configuring$echoc"
      cd $dir
      mkdir build
      cd build
      ../configure \
	--prefix=$HOME$sub \
	PKG_CONFIG_PATH=$HOME$sub/lib/pkgconfig \
	>>buildlog 2>&1
      $echon " building$echoc"
      make >>buildlog 2>&1
      $echon " installing$echoc"
      make install >>buildlog 2>&1
      echo " done."
    )
  fi
done
echo "	all done."

###--------------------------------------------------------------------------
### Install global configuration.

echo -n "Installing dotfile configuration:"
if [ -f $HOME$sub/.mdw.conf ]; then
  echo " already installed."
else
  cp mdw.conf $HOME$sub/.mdw.conf
  echo " done."
fi

## Symlink the various dotfiles into place
dotfiles="
  bash_profile bash_logout bashrc inputrc bash_completion
  emacs emacs-calc vm gnus.el ercrc.el
  vimrc mg zile lesskey
  parallel-config:.parallel/config
  ipython_config.py:.ipython/profile_default/ipython_config.py
  ditz-config
  mailrc signature muttrc
  cgrc tigrc
  gdbinit
  guile
  rcrc
  toprc
  mc-ini:.mc/ini mc-panels.ini:.mc/panels.ini
  pulse-daemon.conf:.pulse/daemon.conf
  aspell.conf
  tclshrc:.tclshrc tclshrc:.wishrc
  lisp-init.lisp:.cmucl-init.lisp
    lisp-init.lisp:.sbclrc
    lisp-init.lisp:.clisprc.lisp
    lisp-init.lisp:.eclrc
  swank.lisp
  mdw-build.conf:.config/mdw-build.conf
  w3m-config:.w3m/config elinks.conf:.elinks/elinks.conf
  dircolors colordiffrc screenrc tmux.conf cvsrc indent.pro"
[ "$xstuff" ] && dotfiles="$dotfiles
  xinitrc xsession xmodmap vncrc vncsession
  fonts.conf
  stalonetrayrc
  putty-defaults:.putty/sessions/Default%20Settings
  mdw.session:.config/gnome-session/sessions/mdw.session
  eterm-theme.cfg:.Eterm/themes/Eterm/theme.cfg
  e-keybindings.cfg:.enlightenment/keybindings.cfg
  evnc-keybindings.cfg:.enlightenment-vnc/keybindings.cfg
  e16-bindings:.e16/bindings.cfg"
echo "Installing dotfiles..."
for d in $dotfiles; do
  target=.$d
  case $d in
    *:*) target=${d#*:} d=${d%%:*};;
  esac
  ft=$HOME$sub/$target
  dir=${ft%/*}
  mkdir -p $dir
  ln -s $here/dot/$d $ft.new
  mv $ft.new $ft
  echo "  $target"
done
echo "	all done."

## CPP-hack files which need it.
cppfiles=""
[ "$xstuff" ] && cppfiles="$cppfiles
  Xdefaults"
echo "Hacking files with C preprocessor..."
defs="-DHOME=$HOME -DPROFILE=$here"
defs="$defs -DEMACSWD=$(mdw-conf emacs-width 77)"
for c in $cppfiles; do
  target=.$c
  case $c in
    *:*) target=${c#*:} c=${c%%:*};;
  esac
  ft=$HOME$sub/$target
  dir=${ft%/*}
  mkdir -p $dir
  cpp -P $defs dot/$c -o $ft.new
  mv $ft.new $ft
  echo "  $target"
done
echo "	all done."

## Substitute things which need substituting.
dotfilessubst="
  gitconfig
  mykermrc
  pulse-default.pa.in:.pulse/default.pa"
echo "Installing dotfiles with substitutions..."
for d in $dotfilessubst; do
  case $d in
    *:*) target=${d#*:} d=${d%%:*};;
    *) target=.$d d=$d.in;;
  esac
  ft=$HOME$sub/$target
  dir=${ft%/*}
  mkdir -p $dir
  sed "
1i\\
### generated by $here/setup; do not edit!\\

/@home@/ s$HOMEg
/@profile@/ s$hereg
/@releasekey@/ s$(bin/mdw-conf releasekey 481334C2)g
" dot/$d >$ft.new
  mv $ft.new $ft
  echo "  $target"
done
echo "  all done."

## Symlink backgrounds.
backgrounds=$(cd bg && echo *)
if [ "$xstuff" ]; then
  echo "Installing backgrounds..."
  for b in $backgrounds; do
    for e in enlightenment e16; do
      dir=$HOME$sub/.$e/backgrounds
      t=$dir/$b
      mkdir -p $dir
      ln -s $here/bg/$b $t.new
      mv $t.new $t
    done
    echo "  $b"
  done
  echo "	all done."
fi

###--------------------------------------------------------------------------
### Install useful scripts included in this package.

scripts="
  mdw-editor
  mdw-pager
  mdw-conf
  mdw-build mdw-sbuild mdw-sbuild-server
  update-buildable-branch
  emacsclient-hack
  movemail-hack
  sendmail-hack
  aspell-hack
  emerge-hack
  lesspipe.sh
  run-with-shell-env
  start-ssh-agent
  start-ssh-pageant
  svnwrap
  guest-console
  hyperspec"
[ "$xstuff" ] && scripts="$scripts
  xinitcmd
  un-backslashify-selection
  lock-screen
  xpra-start-xdummy
  xshutdown"
echo "Installing scripts..."
mkdir -p $HOME$sub/bin
for s in $scripts; do
  ft=$HOME$sub/bin/$s
  ln -s $here/bin/$s $ft.new
  mv $ft.new $ft
  echo "  $s"
done
echo "	all done."

hacks="
  ssh:ssh"
echo "Installing hacks..."
for h in $hacks; do
  d=${h%%:*} h=${h#*:}
  ft=$HOME$sub/bin/hacks/$d
  mkdir -p $ft
  ln -s $here/hacks/$h $ft/$h.new
  mv $ft/$h.new $ft/$h
  echo "  $d:$h"
done
echo "	all done."

###--------------------------------------------------------------------------
### Set up the Emacs config.

$echon "Finding a suitable emacs:$echoc"
emacs=no
for i in emacs23 emacs24 emacs22 emacs21 emacs; do
  if type -p >/dev/null $i; then
    emacs=$i
    break
  fi
done
if [ $emacs = no ]; then
  echo " failed."
  emacs=:
else
  echo " $emacs."
fi

echo "Installing Emacs packages..."
emacspkg="
  make-regexp
  ew-hols
  mdw-gnus-patch
  git git-blame vc-git stgit
  mdw-multiple-cursors
  quilt"
for elib in $emacspkg; do
  $echon "  $elib:$echoc"
  if $false $emacs >/dev/null 2>&1 --no-site-file --batch --eval '
       (progn
	 (setq load-path (nconc load-path (list "~/lib/emacs")))
	 (kill-emacs (condition-case nil
			 (progn (load-library "'"$elib"'") 0)
		       (error 1))))'; then
    echo " already installed."
  else
    if [ -f el/$elib.el ]; then
      cp el/$elib.el $HOME$sub/lib/emacs/$elib.el
    else
      $echon " downloading$echoc"
      $GETURL $HOME$sub/lib/emacs/$elib.el $REPO/$elib.el
    fi
    $echon " compiling$echoc"
    (cd $HOME$sub/lib/emacs;
      $emacs >/dev/null 2>&1 --no-site-file --batch \
	--eval '(byte-compile-file "'"$elib.el"'")')
    echo " done."
  fi
done
echo "	all done."

$echon "Setting up Emacs configuration:$echoc"
$echon " linking$echoc"
for f in dot-emacs.el Makefile; do
  set -- $(echo $link | tr : ' ')
  ln -s $here/el/$f $HOME$sub/lib/emacs/$f.new
  mv $HOME$sub/lib/emacs/$f.new $HOME$sub/lib/emacs/$f
done
$echon " compiling$echoc"
{ cd $HOME$sub/lib/emacs && make EMACS=$emacs; } >/dev/null 2>&1
echo " done."

###----- That's all, folks --------------------------------------------------