#!/bin/sh
# Execute Hugo webiste generation and log all output into log file
# In error case, existing blog content will not be touched
# If this script ist not stored in ~/hugogentmp/ change $DIR

# Version nr of this script. Just for logging
VERSION=1

# Path to hugo executable on uberspace and local (for testing)
HUGO=~/bin/hugo
#HUGO=~/kred/hugo/hugo

# Path to output destination on uberspace and local (for testing). Folder must exists.
PUBLIC_WWW=/var/www/virtual/$USER/html/kollegenrunde
#PUBLIC_WWW=~/hugotest/html/kollegenrunde

# Working dir: here is the script and git's working dirs
GENDIR=~/kollegengen

TMPPUBLIC=$GENDIR/kollegenrunde

# Path to persisted log file, e.g. in web folder
LOG=$GENDIR/log.txt

# Path to a temp log file for hugo's stdout
TMPLOG=$GENDIR/tmplog.txt

# Path to a temp log file for hugo's errout
TMPERR=$GENDIR/tmperr.txt

# Tmp file with timestamp string
TMPDATE=$GENDIR/tmpdate.txt

# Paths to the local gits
TMPGIT_HUGO=$GENDIR/kollegen-hugo
TMPGIT_POSTS=$GENDIR/kollegen-posts

# Path to our repositories
GIT_HUGO=https://kollegen.uber.space/gitea/kollegenrunde/kollegen-hugo.git
GIT_POSTS=https://kollegen.uber.space/gitea/kollegenrunde/kollegen-posts.git


# Log a text file content
log_file () {
    cat $1
    cat $1 >> $LOG
}


# log a string argument
log () {
    echo $1
    echo $1 >> $LOG
}

# Always produce a log file in the destination folder
finish () {

    if [ -f $LOG ]
        then
        echo "Moving log.txt file to $LOG $PUBLIC_WWW/" 
        mv -Z -v $LOG "$PUBLIC_WWW/" 
    fi

    if [ -f $TMPLOG ]
    then
        rm $TMPLOG
    fi 
    
    if [ -f $TMPERR ]
    then
        rm $TMPERR
    fi
        
    if [ -f $TMPDATE ]
    then
        rm $TMPDATE
    fi
    

    exit $1
}

### MAIN ###############################################
log "Version $VERSION"

if [ -d $TMPPUBLIC ]
    then
        rm -r -f $TMPPUBLIC
fi

if [ -f $LOG ]
    then
        rm -v $LOG
        touch $LOG
fi


# Document actual time into log file
date > $TMPDATE
log_file $TMPDATE

log "Using tmp dir $GENDIR" 

if [ ! -d $TMPGIT_POSTS ]
    then
# jetzt clonen wir das Repository in den temporären Ordner
    mkdir -v $TMPGIT_POSTS 2>&1 | tee -a $LOG
    git clone $GIT_POSTS $TMPGIT_POSTS 2>&1 | tee -a $LOG
else
    git -C $TMPGIT_POSTS pull 2>&1 | tee -a $LOG
fi

if [ ! -d $TMPGIT_HUGO ]
    then
# jetzt clonen wir das Repository in den temporären Ordner
    mkdir -v $TMPGIT_HUGO 2>&1 | tee -a $LOG
    git clone --recursive $GIT_HUGO $TMPGIT_HUGO 2>&1 | tee -a $LOG
else
    git -C $TMPGIT_HUGO pull 2>&1 | tee -a $LOG
fi

# Hugo anschmeißen
log "Starting hugo"

cd $TMPGIT_HUGO && $HUGO --destination $TMPPUBLIC > $TMPLOG 2> $TMPERR

if [ -f $TMPLOG ]
then
    log_file $TMPLOG
fi

if [ -f $TMPERR ]
then
    if grep -Fq "Error" $TMPERR
    then
        log "Hugo failed"
        log_file $TMPERR
        log "Generation canceled. Check the error and try to fix it. Then push again."
        finish 1
    fi
fi

if [ -d $PUBLIC_WWW ]
then
    log "Remove $PUBLIC_WWW"
    rm -r -f $PUBLIC_WWW 2>&1 | tee -a $LOG
else
    log "Create $PUBLIC_WWW"
    mkdir -v $PUBLIC_WWW 2>&1 | tee -a $LOG

fi

# Publish now
log "Copy $TMPPUBLIC to $PUBLIC_WWW"
rm -r -f $PUBLIC_WWW
mv -Z -v $TMPPUBLIC $PUBLIC_WWW 2>&1 | tee -a $LOG

log "Ready, Blog created in $PUBLIC_WWW!"

finish 0