#!/usr/bin/env bash
set -euo pipefail
# Enable verbose mode only when DEBUG_DEPLOY=1
[[ "${DEBUG_DEPLOY:-0}" = "1" ]] && set -x
trap 'echo "[deploy-db] error at line $LINENO" >&2' ERR

# Required environment variables (must be exported by the CI step)
: "${REMOTE_BASE:?missing REMOTE_BASE}"
: "${DB_DIR:?missing DB_DIR}"
: "${SSH_USER:?missing SSH_USER}"
: "${SSH_HOST:?missing SSH_HOST}"

REMOTE_DIR="${REMOTE_BASE%/}/${DB_DIR}"
REMOTE_TARGET="${SSH_USER}@${SSH_HOST}"

# SSH options: quiet by default; add -vv in debug mode
SSH_OPTS=(
  -i /root/.ssh/id_rsa
  -o StrictHostKeyChecking=no
  -o UserKnownHostsFile=/dev/null
  -o LogLevel=ERROR
  -q
)
if [[ "${DEBUG_DEPLOY:-0}" = "1" ]]; then
  SSH_OPTS=("${SSH_OPTS[@]/-q/}" -vv)
fi

# rsync options: quiet by default; add -v in debug mode
RSYNC_FLAGS=(-az --delete)
[[ "${DEBUG_DEPLOY:-0}" = "1" ]] && RSYNC_FLAGS=(-avz --delete)

# Create remote directories and sync files
ssh "${SSH_OPTS[@]}" "$REMOTE_TARGET" "mkdir -p ${REMOTE_DIR}/{compose,env}"
rsync "${RSYNC_FLAGS[@]}" -e "ssh ${SSH_OPTS[*]}" ci/prod/compose/       "$REMOTE_TARGET:${REMOTE_DIR}/compose/"
rsync "${RSYNC_FLAGS[@]}" -e "ssh ${SSH_OPTS[*]}" ci/prod/.env.runtime    "$REMOTE_TARGET:${REMOTE_DIR}/env/.env.runtime"

# Deploy on remote host (use 'bash -s' so heredoc is executed remotely)
ssh "${SSH_OPTS[@]}" "$REMOTE_TARGET" REMOTE_DIR="$REMOTE_DIR" bash -s <<'EOSSH'
set -euo pipefail
cd "${REMOTE_DIR}/compose"
set -a; . ../env/.env.runtime; set +a
# Pull quietly if supported; otherwise fall back to normal
docker compose -f db.yml pull --quiet 2>/dev/null || docker compose -f db.yml pull
docker compose -f db.yml up -d --remove-orphans
docker compose ps
date -Is > .last_deploy
logger -t deploy-db "db deployed at $(date -Is) in ${REMOTE_DIR}"
EOSSH