#!/usr/bin/env bash
set -Eeuo pipefail

# shellcheck source=lib.sh
source "$(dirname -- "${BASH_SOURCE[0]}")/lib.sh"

env_file="${1:-/etc/lehuo/lehuo.env}"
require_env_file "$env_file"
bash "$(dirname -- "${BASH_SOURCE[0]}")/preflight.sh" "$env_file"

image_tag="$(env_value "$env_file" IMAGE_TAG)"
release_dir='/opt/lehuo/releases'
install -d -m 0700 "$release_dir"

current_tag=''
if [[ -f "$release_dir/current" ]]; then
  current_tag="$(<"$release_dir/current")"
fi

echo "构建不可变镜像：${image_tag}"
compose "$env_file" build --pull api web

echo '启动数据服务并初始化私有对象存储。'
compose "$env_file" up -d mysql redis minio minio-init

if [[ -n "$current_tag" ]]; then
  echo '迁移前创建生产数据库备份。'
  bash "$(dirname -- "${BASH_SOURCE[0]}")/backup.sh" "$env_file"
fi

echo '执行数据库 migration。'
compose "$env_file" --profile tools run --rm migrate

echo '部署 API 与管理后台网关。'
compose "$env_file" up -d --remove-orphans api web

bash "$(dirname -- "${BASH_SOURCE[0]}")/smoke.sh" "$env_file"

if [[ -n "$current_tag" && "$current_tag" != "$image_tag" ]]; then
  printf '%s\n' "$current_tag" > "$release_dir/previous"
fi
printf '%s\n' "$image_tag" > "$release_dir/current"
chmod 600 "$release_dir/current"
[[ ! -f "$release_dir/previous" ]] || chmod 600 "$release_dir/previous"

printf '部署完成，当前镜像标签：%s\n' "$image_tag"