#!/usr/bin/env bash
# Deploy Discord Bot v2 to production (akamai)
# Pulls latest Docker image and restarts the container.
#
# Usage: .scripts/deploy.sh [-y]
#   -y  Skip confirmation prompt

set -euo pipefail

SSH_CMD="ssh akamai"
REMOTE_DIR="/root/container-data/major-domo"
SERVICE="discord-app"
CONTAINER="major-domo-discord-app-1"
IMAGE="manticorum67/major-domo-discordapp:production"

SKIP_CONFIRM=false
[[ "${1:-}" == "-y" ]] && SKIP_CONFIRM=true

# --- Pre-deploy checks ---

if [[ -n "$(git status --porcelain 2>/dev/null)" ]]; then
  echo "WARNING: You have uncommitted changes."
  git status --short
  echo ""
fi

BRANCH=$(git rev-parse --abbrev-ref HEAD 2>/dev/null || echo "unknown")
COMMIT=$(git log -1 --format='%h %s' 2>/dev/null || echo "unknown")
echo "Branch: ${BRANCH}"
echo "Latest: ${COMMIT}"
echo "Target: akamai (${IMAGE})"
echo ""

if [[ "$SKIP_CONFIRM" != true ]]; then
  read -rp "Deploy to production? [y/N] " answer
  [[ "$answer" =~ ^[Yy]$ ]] || {
    echo "Aborted."
    exit 0
  }
  echo ""
fi

# --- Save previous image for rollback ---

PREV_DIGEST=$($SSH_CMD "docker inspect --format='{{index .RepoDigests 0}}' ${IMAGE} 2>/dev/null" || echo "unknown")

# --- Deploy ---

echo "==> Pulling latest image for ${SERVICE}..."
$SSH_CMD "cd ${REMOTE_DIR} && docker compose pull ${SERVICE}"

echo "==> Restarting ${SERVICE}..."
$SSH_CMD "cd ${REMOTE_DIR} && docker compose up -d ${SERVICE}"

echo "==> Waiting 5s for container to start..."
sleep 5

echo "==> Container status:"
$SSH_CMD "docker ps --filter name=${CONTAINER} --format 'table {{.Names}}\t{{.Status}}\t{{.Image}}'"

echo ""
echo "==> Last 10 log lines:"
$SSH_CMD "docker logs --tail 10 ${CONTAINER}"

NEW_DIGEST=$($SSH_CMD "docker inspect --format='{{index .RepoDigests 0}}' ${IMAGE} 2>/dev/null || docker inspect --format='{{.Image}}' ${CONTAINER}")
echo ""
echo "==> Image digest: ${NEW_DIGEST}"

if [[ "$PREV_DIGEST" == "$NEW_DIGEST" ]]; then
  echo "    (unchanged from previous deploy)"
fi

# --- Rollback command ---

if [[ "$PREV_DIGEST" != "unknown" && "$PREV_DIGEST" != "$NEW_DIGEST" ]]; then
  echo ""
  echo "==> To rollback:"
  echo "    ssh akamai \\"
  echo "      \"cd ${REMOTE_DIR} && docker pull ${PREV_DIGEST} && docker tag ${PREV_DIGEST} ${IMAGE} && docker compose up -d ${SERVICE}\""
fi

echo ""
echo "Deploy complete."