#!/bin/bash

# Function to set the path correct in the config files and store them in the correct location.
replace_and_move() {
    # The ${GIT_DIR//\//\\\/} replaces '/' with '\/' as '/' is a control char in regex
    REPLACE_STR="s/\[\[path_to_repo\\]\\]/${GIT_DIR//\//\\\/}/g"
    OUTDIR="$DIRECTORY/$1"
    # Parse the file trough `sed` and write output to correct directory
    sed $REPLACE_STR $2/$1 > $OUTDIR
    echo "$1 script placed at $OUTDIR"
}

###################
# START OF SCRIPT #
###################
# Check if XDG_CONFIG_HOME is set and select correct config file location.
# See also: systemd.unit manual - section: UNIT FILE LOAD PATH
if [[ -e $XDG_CONFIG_HOME ]]; then
    DIRECTORY=$XDG_CONFIG_HOME/systemd/user
else
    DIRECTORY=$HOME/.config/systemd/user
fi
echo "The scripts will be put in $DIRECTORY"
# The following git command will give the root of the current repo.
GIT_DIR=`git rev-parse --show-toplevel`
echo "Root of this git repo is: $GIT_DIR"
if [[ -e $GIT_DIR/.venv/bin/python3 ]]; then
    echo "Found a virtual environment for Python in the repo"
else
    echo "Pythons virtual environment not found at '$GIT_DIT/.venv'. "
    #There should be a setup.sh file in the directory that setups the virtual environment for python
    if [[ -f $GIT_DIR/setup.sh ]]; then
        echo "Have you tried running '$GIT_DIR/setup.sh'?"
    fi
    echo "I could install config files, but they whould not work. Aborting now"
    exit
fi

FILENAME="pythontaskcheck"
FOLDERNAME="systemd_timer_files"
MAPPATH="$GIT_DIR/$FOLDERNAME/"
TIMERNAME="$FILENAME.timer"
SERVICENAME="$FILENAME.service"
replace_and_move $TIMERNAME $MAPPATH
replace_and_move $SERVICENAME $MAPPATH

echo "Reload systemd deamon"
`systemctl --user daemon-reload`
echo "Enable $TIMERNAME for systemd"
`systemctl --user enable $TIMERNAME`
echo "Start $TIMERNAME for systemd"
`systemctl --user start $TIMERNAME`