#!/bin/sh
# Execute Hugo webiste generation and log all output into log file
# In error case, existing blog content will not be touched

# Path to hugo executable
# HUGO=~/bin/hugo
HUGO=~/kred/hugo/hugo

# Path to output destination. Folder must exists
#PUBLIC_WWW=/var/www/virtual/$USER/html/kollegenrunde
PUBLIC_WWW=~/hugotest/public

# Path to temp dir
# TMPDIR=$(mktemp -d)
TMPDIR=.

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

# Path to a temp log file for hugo's stdout
HUGO_LOG=$TMPDIR/hugolog.txt

# Path to a temp log file for hugo's errout
HUGO_ERR=$TMPDIR/hugoerr.txt

# Tmp file with timestamp string
DATE=$TMPDIR/date.txt

# 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

# Paths to the local gits
SUBGIT_HUGO=kollegen-hugo
SUBGIT_POSTS=kollegen-posts

# 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 () {

    date > $DATE
    log_file $DATE

    if [ -f $LOG ]
        then
        mv $LOG $PUBLIC_WWW
    fi

    rm -r -f $TMPDIR
    exit $1
}

### MAIN ###############################################
if [ ! -d $TMPDIR ]
    then
        mkdir $TMPDIR
        log "Created $TMPDIR"
fi

if [ -f $LOG ]
    then
        log "Old log found: remove $LOG"
        rm $LOG
fi
log "Using tmp dir $TMPDIR" 

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

if [ -f $HUGO_ERR ]
    then
        log "Old err log found: remove $HUGO_ERR"
        rm $HUGO_ERR
fi

if [ ! -d $SUBGIT_POSTS ]
    then
# jetzt clonen wir das Repository in den temporären Ordner
    echo "Clone $GIT_POSTS"
    git clone $GIT_POSTS $SUBGIT_POSTS
else
    echo "Pulling from $GIT_POSTS"
    cd $SUBGIT_POSTS
    git pull $GIT_POSTS
    cd ..
fi

if [ ! -d $SUBGIT_HUGO ]
    then
# jetzt clonen wir das Repository in den temporären Ordner
    log "Clone $GIT_HUGO incl. Theme into $SUBGIT_HUGO"
    git clone --recursive $GIT_HUGO $SUBGIT_HUGO
else
    log "Pulling from $GIT_HUGO"
    cd $SUBGIT_HUGO
    git pull $GIT_HUGO
fi

# Hugo anschmeißen
log "Starting hugo"

$HUGO --destination $TMPDIR > $HUGO_LOG 2> $HUGO_ERR

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

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

if [ -d $PUBLIC_WWW ]
    then
        log "Remove $PUBLIC_WWW"
        rm -r $PUBLIC_WWW
fi

# Publish now
log "Delete old $PUBLIC_WWW"
rm -r $PUBLIC_WWW
log "Copy $TMPDIR to $PUBLIC_WWW"
cp -r $TMPDIR $PUBLIC_WWW

log "Ready, Blog created in $PUBLIC_WWW!"

finish 0