#!/bin/bash

# generate-bootstrap-config.sh
# 从 kubeconfig 生成 bootstrap 配置文件

set -e

echo "🔧 OCDP Bootstrap Configuration Generator"
echo "========================================"
echo ""

# 检查依赖
command -v kubectl >/dev/null 2>&1 || { echo "❌ kubectl is required but not installed. Aborting." >&2; exit 1; }
command -v jq >/dev/null 2>&1 || { echo "❌ jq is required but not installed. Aborting." >&2; exit 1; }

# 默认输出文件
OUTPUT_FILE="${1:-config/bootstrap.json}"

# 临时文件
TMP_FILE=$(mktemp)

# 创建基础配置结构
cat > "$TMP_FILE" <<'EOF'
{
  "enabled": true,
  "users": [],
  "registries": [],
  "clusters": []
}
EOF

echo "📋 请按提示输入信息..."
echo ""

# ===== Admin 用户配置 =====
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo "👤 Admin 用户配置"
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"

read -p "是否添加初始管理员用户? (y/n) [y]: " ADD_ADMIN
ADD_ADMIN=${ADD_ADMIN:-y}

if [[ "$ADD_ADMIN" == "y" ]]; then
  read -p "Admin 用户名: " ADMIN_USER
  read -sp "Admin 密码: " ADMIN_PASS
  echo ""
  read -p "Admin 邮箱 [${ADMIN_USER}@example.local]: " ADMIN_EMAIL
  ADMIN_EMAIL=${ADMIN_EMAIL:-"${ADMIN_USER}@example.local"}

  if [[ -z "$ADMIN_USER" || -z "$ADMIN_PASS" ]]; then
    echo "❌ Admin 用户名和密码不能为空"
    exit 1
  fi

  TMP_USER=$(jq -n \
    --arg username "$ADMIN_USER" \
    --arg password "$ADMIN_PASS" \
    --arg email "$ADMIN_EMAIL" \
    '{username: $username, password: $password, email: $email}')

  jq ".users += [$TMP_USER]" "$TMP_FILE" > "${TMP_FILE}.tmp" && mv "${TMP_FILE}.tmp" "$TMP_FILE"
  echo "✅ Admin 用户 '$ADMIN_USER' 已添加"
fi

echo ""

# ===== Registries 配置 =====
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo "📦 Registry 配置"
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"

read -p "是否添加 Registry? (y/n) [y]: " ADD_REGISTRY
ADD_REGISTRY=${ADD_REGISTRY:-y}

if [[ "$ADD_REGISTRY" == "y" ]]; then
  read -p "Registry 名称 [harbor]: " REGISTRY_NAME
  REGISTRY_NAME=${REGISTRY_NAME:-harbor}
  
  read -p "Registry URL: " REGISTRY_URL
  
  read -p "Registry 描述 [Harbor Registry]: " REGISTRY_DESC
  REGISTRY_DESC=${REGISTRY_DESC:-"Harbor Registry"}
  
  read -p "Registry 用户名（推荐 Harbor robot 账号）: " REGISTRY_USER
  
  read -sp "Registry 密码: " REGISTRY_PASS
  echo ""

  if [[ -z "$REGISTRY_URL" ]]; then
    echo "❌ Registry URL 不能为空"
    exit 1
  fi
  
  read -p "是否跳过 SSL 验证? (y/n) [n]: " REGISTRY_INSECURE
  REGISTRY_INSECURE=${REGISTRY_INSECURE:-n}
  
  if [[ "$REGISTRY_INSECURE" == "y" ]]; then
    INSECURE_VALUE="true"
  else
    INSECURE_VALUE="false"
  fi
  
  # 添加 Registry 到配置
  TMP_REGISTRY=$(jq -n \
    --arg name "$REGISTRY_NAME" \
    --arg url "$REGISTRY_URL" \
    --arg description "$REGISTRY_DESC" \
    --arg username "$REGISTRY_USER" \
    --arg password "$REGISTRY_PASS" \
    --argjson insecure "$INSECURE_VALUE" \
    '{name: $name, url: $url, description: $description, username: $username, password: $password, insecure: $insecure}')
  
  jq ".registries += [$TMP_REGISTRY]" "$TMP_FILE" > "${TMP_FILE}.tmp" && mv "${TMP_FILE}.tmp" "$TMP_FILE"
  echo "✅ Registry '$REGISTRY_NAME' 已添加"
fi

echo ""

# ===== Clusters 配置 =====
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo "☸️  Kubernetes Cluster 配置"
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"

read -p "是否从 kubeconfig 导入 Cluster? (y/n) [y]: " ADD_CLUSTER
ADD_CLUSTER=${ADD_CLUSTER:-y}

CLUSTER_INDEX=0

while [[ "$ADD_CLUSTER" == "y" ]]; do
  echo ""
  echo "--- Cluster $(($CLUSTER_INDEX + 1)) ---"
  
  read -p "Cluster 名称 [cluster$(($CLUSTER_INDEX + 1))]: " CLUSTER_NAME
  CLUSTER_NAME=${CLUSTER_NAME:-cluster$(($CLUSTER_INDEX + 1))}
  
  read -p "Cluster 描述: " CLUSTER_DESC
  
  echo ""
  echo "📂 请选择数据源:"
  echo "  1) 从 kubeconfig 文件提取"
  echo "  2) 手动输入"
  read -p "选择 [1]: " DATA_SOURCE
  DATA_SOURCE=${DATA_SOURCE:-1}
  
  if [[ "$DATA_SOURCE" == "1" ]]; then
    # 从 kubeconfig 提取
    read -p "kubeconfig 文件路径 [~/.kube/config]: " KUBECONFIG_PATH
    KUBECONFIG_PATH=${KUBECONFIG_PATH:-~/.kube/config}
    KUBECONFIG_PATH="${KUBECONFIG_PATH/#\~/$HOME}"
    
    if [[ ! -f "$KUBECONFIG_PATH" ]]; then
      echo "❌ kubeconfig 文件不存在: $KUBECONFIG_PATH"
      continue
    fi
    
    # 列出可用的 contexts
    echo ""
    echo "📋 可用的 contexts:"
    kubectl --kubeconfig="$KUBECONFIG_PATH" config get-contexts
    echo ""
    
    read -p "选择 context (留空使用当前 context): " CONTEXT_NAME
    
    if [[ -n "$CONTEXT_NAME" ]]; then
      KUBECTL_OPTS="--kubeconfig=$KUBECONFIG_PATH --context=$CONTEXT_NAME"
    else
      KUBECTL_OPTS="--kubeconfig=$KUBECONFIG_PATH"
    fi
    
    # 提取数据
    echo "🔍 正在提取 Cluster 配置..."
    
    CLUSTER_HOST=$(kubectl $KUBECTL_OPTS config view --raw -o jsonpath='{.clusters[0].cluster.server}')
    CLUSTER_CA=$(kubectl $KUBECTL_OPTS config view --raw -o jsonpath='{.clusters[0].cluster.certificate-authority-data}')
    CLUSTER_CERT=$(kubectl $KUBECTL_OPTS config view --raw -o jsonpath='{.users[0].user.client-certificate-data}')
    CLUSTER_KEY=$(kubectl $KUBECTL_OPTS config view --raw -o jsonpath='{.users[0].user.client-key-data}')
    
    echo "  ✓ Server: $CLUSTER_HOST"
    echo "  ✓ CA Data: ${CLUSTER_CA:0:50}..."
    echo "  ✓ Cert Data: ${CLUSTER_CERT:0:50}..."
    echo "  ✓ Key Data: ${CLUSTER_KEY:0:50}..."
    
  else
    # 手动输入
    read -p "API Server 地址: " CLUSTER_HOST
    
    echo "请输入 CA 证书数据 (Base64 编码，多行输入以空行结束):"
    CLUSTER_CA=""
    while IFS= read -r line; do
      [[ -z "$line" ]] && break
      CLUSTER_CA="${CLUSTER_CA}${line}"
    done
    
    echo "请输入客户端证书数据 (Base64 编码，多行输入以空行结束):"
    CLUSTER_CERT=""
    while IFS= read -r line; do
      [[ -z "$line" ]] && break
      CLUSTER_CERT="${CLUSTER_CERT}${line}"
    done
    
    echo "请输入客户端密钥数据 (Base64 编码，多行输入以空行结束):"
    CLUSTER_KEY=""
    while IFS= read -r line; do
      [[ -z "$line" ]] && break
      CLUSTER_KEY="${CLUSTER_KEY}${line}"
    done
  fi
  
  # 添加 Cluster 到配置
  TMP_CLUSTER=$(cat <<JSON
{
  "name": "$CLUSTER_NAME",
  "host": "$CLUSTER_HOST",
  "description": "$CLUSTER_DESC",
  "caData": "$CLUSTER_CA",
  "certData": "$CLUSTER_CERT",
  "keyData": "$CLUSTER_KEY"
}
JSON
)
  
  jq ".clusters += [$TMP_CLUSTER]" "$TMP_FILE" > "${TMP_FILE}.tmp" && mv "${TMP_FILE}.tmp" "$TMP_FILE"
  echo "✅ Cluster '$CLUSTER_NAME' 已添加"
  
  CLUSTER_INDEX=$(($CLUSTER_INDEX + 1))
  
  read -p "是否继续添加 Cluster? (y/n) [n]: " ADD_CLUSTER
  ADD_CLUSTER=${ADD_CLUSTER:-n}
done

echo ""

# ===== 保存配置 =====
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo "💾 保存配置"
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"

# 格式化 JSON
jq '.' "$TMP_FILE" > "$OUTPUT_FILE"
rm "$TMP_FILE"

echo "✅ Bootstrap 配置已保存到: $OUTPUT_FILE"
echo ""

# 显示配置摘要
echo "📊 配置摘要:"
echo "  - 用户数: $(jq '.users | length' "$OUTPUT_FILE")"
echo "  - Registry 数: $(jq '.registries | length' "$OUTPUT_FILE")"
echo "  - Cluster 数: $(jq '.clusters | length' "$OUTPUT_FILE")"
echo ""

echo "🚀 接下来的步骤:"
echo "  1. 检查配置文件: cat $OUTPUT_FILE"
echo "  2. 启动应用: make run-mock"
echo "  3. 验证数据:"
echo "     curl http://localhost:8080/api/v1/registries"
echo "     curl http://localhost:8080/api/v1/clusters"
echo ""

echo "✨ 完成!"