post_install() {
    username="pleroma"
    home_dir="/opt/${username}"
    uploads_dir="/var/lib/${username}/uploads"
    static_dir="/var/lib/${username}/static"
    config_dir="/etc/${username}"
    tmp_psql="/tmp/setup_otp_db.psql"

    chown -R pleroma "$home_dir"
    chown -R pleroma "$config_dir"

    instance_gen_params="instance gen\
 --output \"${config_dir}/config.exs\"\
 --output-psql \"$tmp_psql\"\
 --uploads-dir \"$uploads_dir\"\
 --static-dir \"$static_dir\"\
 --dbname \"$username\"\
 --dbuser \"$username\"\
"

    printf "\n"
    printf "A local installation of postgresql is strongly recommended unless you know what you are doing. Use:\n    $ sudo pacman -S postgresql\nto install postgresql locally.\n\n"
	printf "If postgresql is installed locally, the user should run the following commands to initialize pleroma:\n"

	printf ">>> sudo -Hu $username ${home_dir}/bin/pleroma_ctl ${instance_gen_params}\n"
	printf ">>> sudo -Hu postgres psql -f \"${tmp_psql}\"\n"
	printf ">>> sudo -Hu $username ${home_dir}/bin/pleroma_ctl migrate\n\n"

    printf "If the user is using a remote postgresql instance, they should ensure \"${tmp_psql}\" be executed remotely after the first command:\n"
    printf ">>> sudo -Hu $username -s /bin/bash ${home_dir}/bin/pleroma_ctl ${instance_gen_params}\n"
    printf ">>> # Now execute \"$tmp_psql\" remotely.\n"
	printf ">>> sudo -Hu $username -s /bin/bash ${home_dir}/bin/pleroma_ctl migrate\n\n"

    printf "After initializing pleroma, you may start it with:\n"
    printf ">>> sudo systemctl start pleroma\n\n"

	printf "Check https://docs-develop.pleroma.social/backend/installation/otp_en/#post-installation for post-installation steps.\n"
}

pre_upgrade() {
    systemctl stop pleroma.service
}

post_upgrade() {
    printf "\nYou will need to migrate your database as the above upgrade notes state.\n"
    printf "Ensure your postgresql database, whether local or remote, is up,  and run the following command:\n"
    printf ">>> cd /opt/pleroma\n"
    printf ">>> sudo -Hu pleroma /opt/pleroma/bin/pleroma_ctl migrate\n"

    printf "\nAfter all these, you may start pleroma with:\n"
    printf ">>> sudo systemctl start pleroma\n"
}