#!/usr/bin/env bash
# Runs on the server: unpack release-<sha>.tgz, swap app/ atomically, compose up, wait for healthy.
#   bash /srv/tgit/<env>/remote.sh <env> <sha>        (uploaded by deploy.sh; safe to re-run)
set -euo pipefail
ENV=$1
SHA=$2
DIR=/srv/tgit/$ENV
PROJECT=tgit-$ENV
cd "$DIR"

if [ -f "release-$SHA.tgz" ]; then
  rm -rf app.new && mkdir app.new && tar -xzf "release-$SHA.tgz" -C app.new && rm -f "release-$SHA.tgz"
  cp .env app.new/.env
  rm -rf app.old
  [ -d app ] && mv app app.old
  mv app.new app
fi

cd app
# Labels on the bot container, shown on its «Статус» card
export TGIT_SHA=$SHA TGIT_DEPLOYED_AT
TGIT_DEPLOYED_AT=$(date -u +%Y-%m-%dT%H:%M:%SZ)
docker compose -p "$PROJECT" up -d --build --remove-orphans </dev/null

status=""
for _ in $(seq 1 40); do
  status=$(docker inspect -f '{{.State.Health.Status}}' "$PROJECT-bot-1" 2>/dev/null || true)
  [ "$status" = healthy ] && break
  sleep 3
done
if [ "$status" != healthy ]; then
  echo "bot is '$status' after 2 min — last logs:" >&2
  docker logs --tail 50 "$PROJECT-bot-1" >&2 || true
  echo "rollback: cd $DIR && rm -rf app && mv app.old app && cd app && docker compose -p $PROJECT up -d --build" >&2
  exit 1
fi
echo "$SHA" > ../REVISION
docker image prune -f >/dev/null
echo "bot healthy @ $SHA ($ENV)"