#!/bin/bash

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# install or upgrade postgrest / frode klevstul / oct 2025
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


if [ "$EUID" -ne 0 ]
  then echo "error: run as 'root'"
  exit
fi

clear

cd /tmp

# fetch the latest release version
# src: https://gist.github.com/steinwaywhw/a4cd19cda655b8249d908261a62687f8?permalink_comment_id=5097031#gistcomment-5097031
latest_version=$(curl -s https://api.github.com/repos/PostgREST/postgrest/releases/latest | grep -oP '"tag_name": "\K(.*)(?=")')

# ask for user input
echo "install postgrest ${latest_version}? [y/n]"
read -n1 user_input

if [[ ${user_input} == "y" ]]; then

    # construct download url
    download_url="https://github.com/PostgREST/postgrest/releases/download/${latest_version}/postgrest-${latest_version}-linux-static-x86-64.tar.xz"

    # download the file
    wget -O postgrest.tar.xz ${download_url}

    # extract the executable
    tar -xJf *.xz

    # move executable to correct directory
    mv postgrest /usr/local/bin

    echo "new postgrest version is installed as /usr/local/bin/postgrest"

fi

# create /etc/postgrest
if ! [ -d "/etc/postgrest" ]
then

    # make dir(s) if they do not exist
    mkdir -p "/etc/postgrest"

    echo "created directory /etc/postgrest"

fi

# add config
if ! [ -f "/etc/postgrest/config" ]
then

    wget https://gt.op.fo/fro/srv-pub/raw/branch/trunk/cfg/pgr/config

    cp config /etc/postgrest/

    echo "***********************************************************************"
    echo "* ! please, populate '/etc/postgrest/config' with proper login data ! *"
    echo "***********************************************************************"

fi