#!/bin/bash

# Oracle 云韩国区域存储卷重新分配模拟脚本
# 此脚本模拟实际的 Terraform 操作流程

echo "==========================================="
echo "Oracle 云韩国区域存储卷重新分配操作模拟"
echo "==========================================="

echo
echo "步骤 1: 初始化 Terraform 配置 (模拟)"
echo "正在下载 Oracle Cloud Infrastructure (OCI) Provider..."
echo "注意: 实际下载可能需要几分钟时间"
echo "下载进度: [####################] 100% complete"
sleep 3

echo
echo "步骤 2: 检测当前状态"
echo "检测到以下实例:"
echo "  - ch2-instance (VM.Standard2.1) - 将被终止"
echo "  - ch3-instance (VM.Standard2.1) - 保持不变" 
echo "  - a1-instance (VM.Standard.A1.Flex) - 将增加存储"
echo

echo "步骤 3: 执行计划"
echo "Terraform 将执行以下操作:"
echo "  - 销毁: oci_core_instance.ch2_instance (1 个实例)"
echo "  - 创建: oci_core_volume.a1_additional_storage (200GB)"
echo "  - 创建: oci_core_volume_attachment.a1_volume_attachment"
echo

read -p "按 Enter 键继续执行模拟操作..."

echo
echo "步骤 4: 模拟执行操作"
for i in {1..10}; do
  sleep 0.5
  echo -n "."
done

echo
echo
echo "✓ ch2 实例已终止"
sleep 1
echo "✓ 相关存储卷已释放"
sleep 1
echo "✓ 为 A1 实例创建 200GB 数据卷"
sleep 1
echo "✓ 数据卷已成功附加到 A1 实例"
sleep 1
echo "✓ 网络配置已更新"
sleep 1

echo
echo "步骤 5: 验证结果"
echo "✓ ch2 实例已不存在"
echo "✓ A1 实例现在有额外的 200GB 存储"
echo "✓ ch3 实例保持不变"
echo "✓ 存储资源已成功重新分配"

echo
echo "==========================================="
echo "操作完成!"
echo "在实际环境中，你现在可以:"
echo "1. 登录 Oracle Cloud Console 验证变更"
echo "2. 连接到 A1 实例检查新存储"
echo "3. 确认 ch2 实例已终止"
echo "==========================================="