lemmy/docker/prod/migrate-pictshare-to-pictrs.bash

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#!/bin/bash
set -e
if [[ $(id -u) != 0 ]]; then
echo "This migration needs to be run as root"
exit
fi
if [[ ! -f docker-compose.yml ]]; then
echo "No docker-compose.yml found in current directory. Is this the right folder?"
exit
fi
echo "Restarting docker-compose, making sure that pictrs is started and pictshare is removed"
docker-compose up -d --remove-orphans
if [[ -z $(docker-compose ps | grep pictrs) ]]; then
echo "Pict-rs is not running, make sure you update Lemmy first"
exit
fi
echo "Installing imagemagick to convert .webp images to .jpg"
apt install imagemagick -y
echo "Stopping Lemmy so that users dont upload new images during the migration"
docker-compose stop lemmy
echo "Importing pictshare images to pict-rs"
pushd volumes/pictshare/
IMAGE_NAMES=*
for image in $IMAGE_NAMES; do
IMAGE_PATH="$(pwd)/$image/$image"
if [[ ! -f $IMAGE_PATH ]]; then
continue
fi
if [ ${IMAGE_PATH: -5} == ".webp" ]; then
NEW_IMAGE_PATH=$(echo "$IMAGE_PATH" | sed "s/\.webp$/\.jpg/g")
convert "$IMAGE_PATH" "$NEW_IMAGE_PATH"
IMAGE_PATH="$NEW_IMAGE_PATH"
continue
fi
echo -e "\nImporting $IMAGE_PATH"
ret=0
curl --fail -F "images[]=@$IMAGE_PATH" http://127.0.0.1:8537/import || ret=$?
if [[ $ret != 0 ]]; then
read -p "Failed to import $IMAGE_PATH, continue? " yn
case $yn in
[Yy]* ) ;;
[Nn]* ) exit;;
* ) exit;;
esac
fi
done
echo "Fixing permissions on pictshare folder"
find . -type d -exec chmod 755 {} \;
find . -type f -exec chmod 644 {} \;
popd
echo "Rewrite image links in Lemmy database"
docker-compose exec -u postgres postgres psql -U lemmy -c "UPDATE user_ SET avatar = REPLACE(avatar, 'pictshare', 'pictrs/image') WHERE avatar is not null;"
docker-compose exec -u postgres postgres psql -U lemmy -c "UPDATE post SET url = REPLACE(url, 'pictshare', 'pictrs/image') WHERE url is not null;"
echo "Moving pictshare data folder to pictshare_backup"
mv volumes/pictshare volumes/pictshare_backup
echo "Migration done, starting Lemmy again"
echo "If everything went well, you can delete ./volumes/pictshare_backup/ and uninstall imagemagick"
docker-compose start lemmy