#!/usr/bin/env bash
#
# CluPilot — pull the latest code and apply it.
#
# Order matters: migrations run BEFORE the new containers take traffic, because
# code that expects a column the database does not have yet answers with 500s.
# The queue workers are restarted at the end — they are long-running processes
# and keep the old classes in memory otherwise.
set -euo pipefail

cd "$(dirname "$0")/.."
BRANCH="${BRANCH:-main}"

log() { printf '\n\033[1;34m==>\033[0m %s\n' "$*"; }

log "Fetching $BRANCH"
git fetch --quiet origin "$BRANCH"

before="$(git rev-parse HEAD)"
git merge --quiet --ff-only "origin/$BRANCH"
after="$(git rev-parse HEAD)"

if [[ "$before" == "$after" ]]; then
    log "Already up to date ($(git rev-parse --short HEAD))"
    exit 0
fi

log "Updating $(git rev-parse --short "$before") → $(git rev-parse --short "$after")"
git --no-pager log --oneline "$before..$after" | sed 's/^/    /'

# Rebuilt only when the image definition actually changed — a rebuild is
# minutes, a no-op check is seconds.
if ! git diff --quiet "$before" "$after" -- docker/ composer.json composer.lock package.json package-lock.json; then
    log "Rebuilding the image"
    docker compose build --quiet app
fi

log "Applying migrations"
docker compose exec -T app php artisan migrate --force

log "Rebuilding assets"
docker compose exec -T app npm run build

log "Restarting services"
docker compose up -d
# Workers hold their PHP classes for the life of the process; without this they
# keep running the code from before the update.
docker compose restart queue queue-provisioning scheduler reverb

docker compose exec -T app php artisan config:clear >/dev/null
docker compose exec -T app php artisan view:clear >/dev/null

log "Done — now on $(git rev-parse --short HEAD)"