#!/usr/bin/env bash
# Pull the latest main and (re)build the XIP stack on the deploy host.
# Invoked over SSH by the Gitea Actions workflow on every push to main,
# and runnable by hand on the CT for manual redeploys.
set -euo pipefail

APP_DIR="${XIP_APP_DIR:-/opt/xip}"
COMPOSE_FILE="docker-compose.prod.yml"
ENV_FILE=".env.prod"

cd "$APP_DIR"

echo "==> Fetching latest origin/main…"
git fetch --all --prune
git reset --hard origin/main

echo "==> Building + starting the stack…"
deploy_up() {
  docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" up -d --build --remove-orphans
}

# A raced or interrupted previous deploy (e.g. a manual `compose up` overlapping
# the automated one) can leave a half-removed / renamed container behind, making
# the next recreate fail with "removal of container ... is already in progress".
# If the first attempt fails, prune stopped containers and retry once.
if ! deploy_up; then
  echo "!! 'compose up' failed — pruning stopped containers, retrying once in 8s…"
  docker container prune -f >/dev/null 2>&1 || true
  sleep 8
  deploy_up
fi

echo "==> Pruning dangling images…"
docker image prune -f >/dev/null 2>&1 || true

echo "==> Current state:"
docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" ps

echo "==> Deploy complete."