#!/bin/bash
# -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
source "$(dirname "$0")/../load.sh" || exit 1

function parse_runphp() {
    local runphp="$1" preamble="$2" conf="$3" postamble="$4"
    local conf0
    ac_set_tmpfile conf0
    # extraire la configuration depuis le fichier
    <"$runphp" awk -v preamble="$preamble" -v conf="$conf0" -v postamble="$postamble" '
BEGIN { out = preamble }
{
  if ($0 ~ /SOF:runphp.userconf:/) {
    if (out != "") print >out
    out = conf
  } else if ($0 ~ /EOF:runphp.userconf:/) {
    out = postamble
    if (out != "") print >out
  } else {
    if (out != "") print >out
  }
}
'
    # mettre en forme le fichier conf: pas de lignes vides avant et après
    <"$conf0" >"$conf" awk '
BEGIN { p = 0; have_pending = 0; pending = "" }
$0 != "" { p = 1 }
p == 1 {
  if ($0 != "") {
    if (have_pending) print pending
    print
    have_pending = 0
    pending = ""
  } else {
    if (!have_pending) have_pending = 1
    else pending = pending "\n"
  }
}
'
    ac_clean "$conf0"
}

declare -A PHPWRAPPER_DESTDIRS=(
    [_bg_launcher.php]=sbin
    [.launcher.php]=cli
    [_wrapper.sh]=cli
)
declare -A PHPWRAPPER_MODES=(
    [_bg_launcher.php]=+x
    [.launcher.php]=
    [_wrapper.sh]=+x
)

projdir=
install_phpwrappers=auto
args=(
    "Mettre à jour le script runphp"
    "[path/to/runphp]"
    -d:,--projdir:PROJDIR . "\
Copier les fichiers pour un projet de l'université de la Réunion:
- BUILDENV0 et BUILDENV sont fixés à ..env.dist et .env
- les fichiers ..env.dist et .runphp.conf sont créés le cas échéant
- le script build est mis à jour
- les wrappers PHP pour la gestion des tâches de fond sont mis à jour le cas
  échéant"
    -p,--phpwrappers-install install_phpwrappers=1 "forcer l'installation des wrappers PHP"
    --np,--no-phpwrappers-install install_phpwrappers= "ne pas installer les wrappers PHP"
)
parse_args "$@"; set -- "${args[@]}"

if [ -n "$projdir" ]; then
    setx projdir=abspath "$projdir"
    set -- "$projdir/sbin/runphp"
fi

runphp="${1:-.}"
if [ -d "$runphp" ]; then
    runphp="$runphp/runphp"
elif [ ! -e "$runphp" ]; then
    [ "${runphp%/runphp}" != "$runphp" ] || runphp="$runphp/runphp"
fi

setx runphp=abspath "$runphp"
setx rundir=dirname -- "$runphp"
[ "$rundir" == "$MYDIR" ] && exit 0
[ -d "$rundir" ] || mkdir -p "$rundir"

# Tout d'abord, isoler chaque partie du fichier local
ac_set_tmpfile preamble
ac_set_tmpfile conf
ac_set_tmpfile postamble
parse_runphp "$MYDIR/runphp" "$preamble" "$conf" "$postamble"

# Puis analyser le fichier destination
if [ -f "$runphp" ]; then
    ac_set_tmpfile userconf
    parse_runphp "$runphp" "" "$userconf" ""
    initial_config=

elif [ -n "$projdir" ]; then
    # forcer BUILDENV0=..env.dist et BUILDENV=.env pour les projets de
    # l'université de la Réunion
    ac_set_tmpfile userconf
    sed <"$conf" >"$userconf" '
/^BUILDENV0=/s/=.*/=..env.dist/
/^BUILDENV=/s/=.*/=.env/
'
    initial_config=1

else
    userconf="$conf"
    initial_config=1
fi

# (Re)construire le fichier destination
estep "$(relpath "$runphp")"
(
    cat "$preamble"
    echo
    cat "$userconf"
    echo
    cat "$postamble"
) >"$runphp"
[ -x "$runphp" ] || chmod +x "$runphp"

eval "$(
vars=(PROJDIR COMPOSERDIR COMPOSERPHAR VENDORDIR BUILDENV0 BUILDENV BUILD_FLAVOUR DIST IMAGENAME)
arrays=(BUILD_IMAGES DISTFILES TEMPLATEFILES VARFILES)
for var in "${vars[@]}"; do eval "$var="; done
for array in "${arrays[@]}"; do eval "$array=()"; done
source "$runphp"
for var in "${vars[@]}"; do echo_setv2 "$var"; done
for array in "${arrays[@]}"; do echo_seta2 "$array"; done
)"

estep "$(relpath "$rundir/Dockerfile.runphp")"
rsync -lpt "$MYDIR/Dockerfile.runphp" "$rundir/"

if [ -n "$projdir" ]; then
    if testdiff "$rundir/build" "$MYDIR/build"; then
        estep "$(relpath "$rundir/build")"
        cp "$MYDIR/build" "$rundir/build"
        chmod +x "$rundir/build"
    fi
    if [ ! -f "$projdir/..env.dist" ]; then
        estep "$(relpath "$projdir/..env.dist")"
        sed <"$MYDIR/dot-build.env.dist" >"$projdir/..env.dist" '
/^IMAGENAME=/s/=.*\//='"$(basename -- "$projdir")"'\//
'
        initial_config=1
    fi
    if [ ! -f "$projdir/.runphp.conf" ]; then
        estep "$(relpath "$projdir/.runphp.conf")"
        sed <"$MYDIR/dot-runphp.conf" >"$projdir/.runphp.conf" '
/^RUNPHP=/s/=.*/=sbin\/runphp/
'
    fi

    sbin_dest=sbin
    cli_dest=cli_config
    if [ "$install_phpwrappers" == auto ]; then
        if [ ! -f "$PROJDIR/$COMPOSERDIR/composer.json" ]; then
            # ce doit être un projet PHP
            install_phpwrappers=
        elif [ -d "$projdir/cli_config" ]; then
            install_phpwrappers=1
            sbin_dest=sbin
            cli_dest=cli_config
        elif [ -d "$projdir/_cli" ]; then
            install_phpwrappers=1
            sbin_dest=sbin
            cli_dest=_cli
        else
            install_phpwrappers=
        fi
    fi

    if [ -n "$install_phpwrappers" ]; then
        setx -a phpwrappers=ls_files "$MYDIR" "phpwrapper-*"
        for phpwrapper in "${phpwrappers[@]}"; do
            destname="${phpwrapper#phpwrapper-}"
            destdir="${PHPWRAPPER_DESTDIRS[$destname]}"
            [ -n "$destdir" ] || die "$phpwrapper: la destination n'est pas configurée"
            mode="${PHPWRAPPER_MODES[$destname]}"

            case "$destdir" in
            sbin) destdir="$PROJDIR/$sbin_dest";;
            cli) destdir="$PROJDIR/$cli_dest";;
            *) destdir="$PROJDIR/$destdir";;
            esac

            estep "$(relpath "$destdir/$destname")"
            mkdir -p "$destdir"
            tail -n+4 "$MYDIR/$phpwrapper" |
                sed "s|/@@CLI@@/|/$cli_dest/|" >"$destdir/$destname"
            [ -n "$mode" ] && chmod "$mode" "$destdir/$destname"
        done
    fi
fi

[ -n "$initial_config" ]