#!/usr/bin/bash
# crude-ci - build new Emacs binaries for windows after commits6
#
# Copyright 2026 Corwin Brust <corwin@bru.st>
#
# This program is distributed under the terms of the GNU Public
# License version 3 or (at your option) any later version.
#

test -n "$DEBUG" && set -x

# most likely things to edit
SLEEP_TIME=${SLEEP_TIME-17}

# if truthy, try to rebuild tree-sitter grammers also
# NO_TS=${NO_TS-1}

# number of loops between tree sitter project checks
TS_WAIT=$((17 * 60))

LK_WAIT=$((17 * 60))

EC=${EC:-"$( echo "$MSYSTEM" | grep UCRT64 )"}
EU=${EU:-"$(test -n "$EC" && printf '%s' "-ucrt")"}

# the name the current master branch will have when it becomes the release branch
MASTER=emacs$EU-32

# webpage with the head-revision of a given branch
BASE_URI=$( printf '%s://%s/%s?project=%s&property=%s&' \
	           'https' \
		   'test.comic.chat' \
		   'last-rev.pl' \
		   'emacs' \
		   'revision' )

# counter
runs_since_last_ts=$TS_WAIT

LOCKFILE=/g/.crude-ci.lock
if test -r $LOCKFILE ; then
    echo "ERROR: cannot start while lockfile exists, try:\n\trm $LOCKFILE";
    exit 1;
fi

# the .private file exports SSH_KEY and SSH_USER, needed for rsync
if [[ -r /g/.private ]] ; then
    . /g/.private
else
    echo "Private settings missing";
    exit 1;
fi

sleep 10;

while true ;
do
    if test -r $LOCKFILE ; then
	echo -e "\e[1;6m$( date +'%Y-%m-%d %H:%M' ) Build in process. Trying again in $LK_WAIT seconds..\e[0m"
	sleep $LK_WAIT
	continue
    fi
    # maybe rebuild tree-sitter grammers
    # NOTE: only build TS grammers under MSYS54 for now
    if test -z "$NO_TS" && test -z "$EC" ; then
	runs_since_last_ts=$((1+ runs_since_last_ts))
	if [[ $runs_since_last_ts > $TS_WAIT ]]  ; then
	    touch $LOCKFILE
	    echo -e "\e[1;2m$( date +'%Y-%m-%d %H:%M' ) Checking treesitter projects...\e[0m"
	    runs_since_last_ts=$((0));
	    /g/emacs-local-ci/build-tree-sitter.sh
	    rm $LOCKFILE
	fi
    fi
    for VER in 32 31 ;
    do
	branch_folder_name=emacs$EU-$VER
	cd /g/git/$branch_folder_name

	# special case name of the master branch
	branch_name=emacs-$VER #$branch_folder_name
	if [[ $MASTER -eq $branch_folder_name ]] ; then
	    branch_name=master
	    branch_color=35
	else
	    branch_color=36
	fi

	# echo "checking Emacs branche $branch_name for changes..."

	local_rev=$( git rev-parse HEAD )
	echo "Fetching... ${BASE_URI}&branch=${branch_name}"
	remote_rev=$( wget -qO - $BASE_URI'&'branch=$branch_name );
	if [[ "$local_rev" != "$remote_rev" ]] ; then
	    local_color=33
	else
	    local_color=32
	fi

	echo -e "\e[1;2m$( date +'%Y-%m-%d %H:%M' )\e[0m " \
	     "\e[1;${branch_color}m$branch_folder_name\e[0m  " \
	     "\e[1;2mhave:\e[0m\e[1;32m${local_rev:0:6}\e[0m  " \
	     "\e[1;2mwant:\e[0m\e[1;${local_color}m${remote_rev:0:6}\e[0m"

	if [[ -n $FORCE ]] || [[ "$local_rev" != "$remote_rev" ]] ; then

	    touch $LOCKFILE
	    # wait, in case of slow trickle of related commits
	    if [[ -z $FORCE ]] ; then
		echo "pausing for $SLEEP_TIME seconds..";
		sleep $SLEEP_TIME;
	    fi

	    echo "GIT: pull --rebase .."
	    git pull --rebase;
	    new_rev=$( git rev-parse HEAD );
	    new_rev_short=${new_rev:0:6};
	    (set -x;
	     MV=$VER /g/emacs-local-ci/build-dist.sh;
	    )2>&1 | tee -a /g/log/${branch_folder_name}-$new_rev_short-`date +%Y-%m-%d-%H%M`.log

	    problems=`(/g/emacs-local-ci/check-feature.pl ${branch_folder_name}-$new_rev_short; /g/emacs-local-ci/check-log.sh ${branch_folder_name}) | grep NOT | cut -d ' ' -f 1,4 | perl -e 'END{ print join q(, ), @a }' -ne 's/\s+/ /msg; push @a, $_ if length'`;

	    if [[ -n $problems ]] ; then
		health="dubious: $problems";
	    else
		health="OK"
	    fi

	    if [[ -n $CC_SSH_KEY ]] && [[ -n $CC_SSH_USER ]] && [[ -n $CC_SSH_HOST ]] ; then
		#last_up="$( basename $( ls -1td /h/upload/$branch_folder_name* | head -1 ) )"
		BUILD_URI="https://corwin.bru.st/$branch_folder_name/$branch_folder_name-$new_rev_short"
		ssh -i "$CC_SSH_KEY" "$CC_SSH_USER@$CC_SSH_HOST" \
		    "echo '#emacs-dev [$branch_name@$new_rev_short] `uname -o` build $health $BUILD_URI (`hostname`)' >>/petroglyph/udp2irc/gliphy.fifo"
	    fi
	    rm $LOCKFILE
	fi
    done
    FORCE=
    powershell /g/emacs-local-ci/fix-shortcut.ps1
    sleep ${SLEEP_TIME}
done