#!/bin/bash
# Sets up Ghost (Docker-based) from a backup stored in B2.
# Assumes B2 at ${BUCKET_PATH} contains:
#   db.sql      — mysqldump of the ghost database
#   content/    — Ghost content directory
#
# Run ghost_server-migrate first to populate B2, then run this.

set -euo pipefail

# shellcheck source=ghost_server-env
. "${HOME}"/"${USER}"-env

echo -e "\n[+] setting up ghost\n\n-------\n"

TMP_DIR="/tmp/${USER}-restore"

mkdir -p "${VOLUME_PATH}"/{content,mysql}
mkdir -p "${TMP_DIR}"

envsubst <"${HOME}"/"${USER}"-compose_template.yaml >"${HOME}"/"${USER}"-compose.yaml

# ---------------------------------------------------------------------------
# 1. Start MySQL; Ghost stays down until data is restored
# ---------------------------------------------------------------------------
echo "[+] starting MySQL..."
sudo docker compose -f "${HOME}"/"${USER}"-compose.yaml up -d db

echo "[+] waiting for MySQL to be healthy..."
until sudo docker exec ghost-mysql mysqladmin ping -h localhost -u root --password="${DB_ROOT_PASSWORD}" --silent 2>/dev/null; do
  sleep 3
done

# ---------------------------------------------------------------------------
# 2. Restore database from B2
# ---------------------------------------------------------------------------
echo "[+] downloading database dump from B2..."
rclone copyto "${BUCKET_PATH}/db.sql" "${TMP_DIR}/db.sql"

echo "[+] restoring database..."
cat "${TMP_DIR}/db.sql" | sudo docker exec -i ghost-mysql mysql -u root --password="${DB_ROOT_PASSWORD}" ghost

echo "[+] database restored"

# ---------------------------------------------------------------------------
# 3. Restore content directory from B2
# ---------------------------------------------------------------------------
echo "[+] downloading content from B2..."
rclone copy "${BUCKET_PATH}/content/" "${VOLUME_PATH}/content/"

echo "[+] content restored"

# ---------------------------------------------------------------------------
# 4. Start Ghost — it will run schema migrations (V5 -> V6) automatically
# ---------------------------------------------------------------------------
echo "[+] starting Ghost..."
sudo docker compose -f "${HOME}"/"${USER}"-compose.yaml up -d ghost

rm -rf "${TMP_DIR}"

echo -e "\n-----\nINFO\n-----"
echo "[i] Ghost is starting and running database migrations. This may take a minute."
echo "[i] Check logs: sudo docker compose -f ~/ghost_server-compose.yaml logs -f ghost"