#!/bin/bash

#
## Update Dendrite with git running on alpinelinux
#

#
## Variables
#

# User running dendrite
dendriteuser=dendrite

# How to stop and start dendrite
stopdendrite="rc-service dendrite stop"
startdendrite="rc-service dendrite start"

# Installdir
installdir="/opt/dendrite"

# Workdir
workdir="/tmp"

# Backupdir
backupdir="/home/dendrite/backup"

# Delete old backups? "yes" or "no"
deletebackup="no"

#
## Main
#

# Set Starttime of script
starttime=`date +"%Y%m%d_%H%M%S"`
echo "Starting update at $starttime"

# Stopping dendrite
$stopdendrite

# Delete old backups if not wanted
if [[ "$deletebackup" = "yes" ]]; then
	rm -r $backupdir/dendrite-*
elif [[ "$deletebackup" = "no" ]]; then
	echo "Will not delete old backups."
else
	echo "Wrong argument $deletebackup. Please set *deletebackup* to *yes* or *no*"
	exit 1
fi

# Move old dendrite to backup
if [[ ! -d "$backupdir" ]]; then
	echo "Since $backupdir doesn't exist - create it."
	mkdir -p $backupdir
fi

mkdir $backupdir/dendrite-$starttime/
mv $installdir/* $backupdir/dendrite-$starttime

# Clone https://github.com/matrix-org/dendrite to $workdir
su $dendriteuser -s $SHELL -lc "git clone https://github.com/matrix-org/dendrite $workdir/dendrite"

# Compile dendrite
su $dendriteuser -s $SHELL -lc "cd $workdir/dendrite && go build -o /opt/dendrite/bin/ ./cmd/..."

# Starting dendrite
$startdendrite

# Finish
echo "New dendrite-version is running! Check if it is working: https://federationtester.matrix.org/"