#!/usr/bin/env bash

set -euo pipefail

time="$(date --iso-8601=s --utc)"
echo "Starting backup procedure with time=$time"

dir=$(mktemp -d)
echo "Setting workdir to $dir"
cd "$dir"
# Delete the temporary directory afterwards.
# Yes, this variable should expand now.
# shellcheck disable=SC2064
trap "rm -rf $dir" EXIT

echo "Logging into garage"
export MC_CONFIG_DIR="$dir"
mc alias set garage "$S3_ENDPOINT" "$S3_ACCESS_KEY" "$S3_SECRET_KEY" --api S3v4

mc ls garage/backups

files=$(jq -c '.files[]' "$CONFIG_FILE") 

IFS=$'\n'
for file_config in $files; do
    filepath=$(echo "$file_config" | jq -r ".file")
    app=$(echo "$file_config" | jq -r ".app")

    echo "Backing up app $app FILE $filepath..."
    tmppath="$dir/file"
    xz < "$filepath" > "$tmppath"

    echo "Uplading file"
    mc put "$tmppath" "garage/$S3_BUCKET/$app/$time/$(basename "$filepath").xz"
    echo "Uploaded file"
done