#!/bin/bash

# RabbitMQ 连接信息
RABBITMQ_HOST="127.0.0.1"
RABBITMQ_PORT="15672"
RABBITMQ_USER="admin"
RABBITMQ_PASS="admin"
VHOST="dataflow"

# 平台列表
PLATFORMS=("douyin" "jd" "tmall" "redbook" "amazon" "naver" "rakuten" "shopify")
DATA_TYPES=("orders" "products" "refunds" "inventory")

# 0. 检测并清理现有 VHost 和用户（如果存在）
echo "========================================"
echo "开始清理现有配置..."
echo "========================================"

# 检查 VHost 是否存在
echo "检查 VHost: $VHOST 是否存在..."
VHOST_EXISTS=$(rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS list vhosts | grep -w "$VHOST" || true)

if [ -n "$VHOST_EXISTS" ]; then
  echo "警告: VHost '$VHOST' 已存在，将删除所有现有配置..."

  # 删除 VHost（会自动删除该 VHost 下的所有 Exchanges、Queues、Bindings、权限）
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    delete vhost --name "$VHOST"

  echo "✓ VHost '$VHOST' 及其所有资源已删除"
else
  echo "VHost '$VHOST' 不存在"
fi

# 清理所有相关用户账号
echo ""
echo "清理用户账号..."

# 平台用户列表
ALL_USERS=()
for platform in "${PLATFORMS[@]}"; do
  ALL_USERS+=("user_${platform}")
done

# 添加其他用户
ALL_USERS+=("user_dataflow_consumer")
ALL_USERS+=("user_ops")

# 删除用户（如果存在）
for user in "${ALL_USERS[@]}"; do
  USER_EXISTS=$(rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS list users | grep -w "$user" || true)
  if [ -n "$USER_EXISTS" ]; then
    rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
      delete user --name "$user"
    echo "✓ 删除用户: $user"
  fi
done

echo ""
echo "========================================"
echo "清理完成，开始重新配置..."
echo "========================================"
echo ""

# 1. 创建 VHost
echo "创建 VHost: $VHOST"
rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
  declare vhost --name "$VHOST"

# 2. 创建主 Exchange（用于重试消息回流）
echo "创建主 Exchange: main.exchange"
rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
  declare exchange --name "main.exchange" --vhost "$VHOST" \
  --type topic --durable true

# 3. 创建 DLX (死信交换机)
echo "创建死信交换机 (DLX)..."
for dtype in "${DATA_TYPES[@]}"; do
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare exchange --name "dlx.${dtype}" --vhost "$VHOST" \
    --type topic --durable true
  echo "✓ 创建 DLX: dlx.${dtype}"
done

# 4. 创建主业务队列（带 DLX 配置）
echo ""
echo "创建主业务队列..."
for dtype in "${DATA_TYPES[@]}"; do
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare queue --name "${dtype}.queue" --vhost "$VHOST" --durable true \
    --arguments "{\"x-message-ttl\":86400000,\"x-dead-letter-exchange\":\"dlx.${dtype}\",\"x-dead-letter-routing-key\":\"retry\"}"
  echo "✓ 创建队列: ${dtype}.queue"
done

# 5. 创建重试队列（带 TTL 和 DLX 回流配置）
echo ""
echo "创建重试队列..."
for dtype in "${DATA_TYPES[@]}"; do
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare queue --name "${dtype}.retry.queue" --vhost "$VHOST" --durable true \
    --arguments "{\"x-message-ttl\":5000,\"x-dead-letter-exchange\":\"main.exchange\"}"
  echo "✓ 创建重试队列: ${dtype}.retry.queue"
done

# 6. 创建错误队列
echo ""
echo "创建错误队列..."
rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
  declare queue --name "errors.queue" --vhost "$VHOST" --durable true \
  --arguments '{"x-message-ttl":604800000}'
echo "✓ 创建错误队列: errors.queue"

# 7. 绑定主 Exchange 到主队列（使用通配符）
echo ""
echo "绑定主 Exchange 到主队列..."
for dtype in "${DATA_TYPES[@]}"; do
  # 使用 order.#, product.# 等通配符匹配所有平台
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare binding --source "main.exchange" --destination "${dtype}.queue" \
    --destination-type queue --vhost "$VHOST" --routing-key "${dtype%s}.#"
  echo "✓ 绑定: main.exchange → ${dtype}.queue (routing_key: ${dtype%s}.#)"
done

# 8. 绑定 DLX 到重试队列
echo ""
echo "绑定 DLX 到重试队列..."
for dtype in "${DATA_TYPES[@]}"; do
  # DLX -> 重试队列
  # 注意：方案B中，超过重试次数的消息由 Consumer 直接发送到 errors.queue
  # 不使用 DLX 的 routing_key="error" 路由，因此不需要绑定到 errors.queue
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare binding --source "dlx.${dtype}" --destination "${dtype}.retry.queue" \
    --destination-type queue --vhost "$VHOST" --routing-key "retry"
  echo "✓ 绑定: dlx.${dtype} → ${dtype}.retry.queue (routing_key: retry)"
done

# 9. 为每个平台创建 Exchange 和 Binding
echo ""
echo "========================================"
echo "创建平台 Exchange 和 Binding..."
echo "========================================"
for platform in "${PLATFORMS[@]}"; do
  echo ""
  echo "处理平台: ${platform}"

  # 创建平台业务 Exchange
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare exchange --name "${platform}.exchange" --vhost "$VHOST" \
    --type topic --durable true
  echo "✓ 创建业务 Exchange: ${platform}.exchange"

  # 绑定到业务队列（使用新的 routing key 格式：data_type.platform）
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare binding --source "${platform}.exchange" --destination "orders.queue" \
    --destination-type queue --vhost "$VHOST" --routing-key "order.${platform}"

  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare binding --source "${platform}.exchange" --destination "products.queue" \
    --destination-type queue --vhost "$VHOST" --routing-key "product.${platform}"

  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare binding --source "${platform}.exchange" --destination "refunds.queue" \
    --destination-type queue --vhost "$VHOST" --routing-key "refund.${platform}"

  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare binding --source "${platform}.exchange" --destination "inventory.queue" \
    --destination-type queue --vhost "$VHOST" --routing-key "inventory.${platform}"
  echo "✓ 绑定到业务队列 (4个)"

  # 创建平台错误 Exchange
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare exchange --name "${platform}.errors.exchange" --vhost "$VHOST" \
    --type topic --durable true
  echo "✓ 创建错误 Exchange: ${platform}.errors.exchange"

  # 绑定到错误队列
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare binding --source "${platform}.errors.exchange" --destination "errors.queue" \
    --destination-type queue --vhost "$VHOST" --routing-key "#"
  echo "✓ 绑定到错误队列"

  # 创建平台用户
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare user --name "user_${platform}" --password "change_me_${platform}" --tags ""
  echo "✓ 创建用户: user_${platform}"

  # 配置平台用户权限
  rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
    declare permissions --vhost "$VHOST" --user "user_${platform}" \
    --configure "^${platform}\\.(exchange|errors\\.exchange)$" \
    --write "^${platform}\\.(exchange|errors\\.exchange)$" \
    --read "^${platform}\\.errors\\..*$"
  echo "✓ 配置用户权限"
done

# 10. 创建 dataflow 消费者用户
echo ""
echo "========================================"
echo "创建 dataflow 消费者用户..."
echo "========================================"
rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
  declare user --name "user_dataflow_consumer" --password "change_me_consumer" --tags ""
echo "✓ 创建用户: user_dataflow_consumer"

# Consumer 需要完整的权限来声明和消费队列
# - configure: 允许声明 main.exchange、DLX exchanges 和所有队列
# - write: 允许向业务队列写入（ACK/NACK）、DLX 和 errors exchange
# - read: 允许读取 main.exchange、业务队列和 DLX exchanges
rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
  declare permissions --vhost "$VHOST" --user "user_dataflow_consumer" \
  --configure "^(main\\.exchange|dlx\\..*)|(.*\\.queue)$" \
  --write "^(orders|products|refunds|inventory).*\\.queue$|(dlx\\..*)|(.*\\.errors\\.exchange)$" \
  --read "^(main\\.exchange|(orders|products|refunds|inventory).*\\.queue|dlx\\..*)$"
echo "✓ 配置用户权限 (configure: main.exchange+DLX+queues, write: business queues+DLX+errors, read: main.exchange+business queues+DLX)"

# 11. 创建运维监控用户
echo ""
echo "创建运维监控用户..."
rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
  declare user --name "user_ops" --password "change_me_ops" --tags ""
echo "✓ 创建用户: user_ops"

rabbitmqadmin -H $RABBITMQ_HOST -P $RABBITMQ_PORT -u $RABBITMQ_USER -p $RABBITMQ_PASS \
  declare permissions --vhost "$VHOST" --user "user_ops" \
  --configure "^errors\\..*$" --write "" --read "^errors\\.queue$"
echo "✓ 配置用户权限"

echo ""
echo "========================================"
echo "RabbitMQ 配置完成！"
echo "========================================"
echo ""
echo "已创建："
echo "- 1 个 VHost: $VHOST"
echo "- 1 个主 Exchange: main.exchange"
echo "- 4 个 DLX: dlx.orders, dlx.products, dlx.refunds, dlx.inventory"
echo "- 4 个主队列: orders.queue, products.queue, refunds.queue, inventory.queue"
echo "- 4 个重试队列: orders.retry.queue, products.retry.queue, refunds.retry.queue, inventory.retry.queue"
echo "- 1 个错误队列: errors.queue"
echo "- ${#PLATFORMS[@]} 个平台 Exchange (业务 + 错误)"
echo "- $((${#PLATFORMS[@]} + 2)) 个用户 (${#PLATFORMS[@]} 个平台用户 + 1 个消费者 + 1 个运维)"
echo ""
echo "提示: 请修改所有用户的默认密码 (change_me_*)"