"""
ES相关的API视图
"""
import json
from django.http import JsonResponse
from django.views.decorators.http import require_http_methods
from django.views.decorators.csrf import csrf_exempt
from .es_connect import (
    create_index_with_mapping, 
    insert_data, 
    search_data, 
    search_by_any_field,
    search_all, 
    delete_by_id, 
    update_by_id, 
    get_by_id,
    write_user_data,
    get_all_users,
    delete_user_by_username,
    update_user_permission
)


@require_http_methods(["GET", "POST"])
@csrf_exempt
def init_index(request):
    """初始化ES索引"""
    try:
        create_index_with_mapping()
        return JsonResponse({"status": "success", "message": "索引初始化成功"})
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["POST"])
@csrf_exempt
def add_data(request):
    """添加数据到ES"""
    try:
        data = json.loads(request.body.decode('utf-8'))
        success = insert_data(data)
        if success:
            return JsonResponse({"status": "success", "message": "数据添加成功"})
        else:
            return JsonResponse({"status": "error", "message": "数据添加失败"}, status=500)
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["GET"])
def search(request):
    """搜索数据"""
    try:
        query = request.GET.get('q', '')
        if not query:
            return JsonResponse({"status": "error", "message": "搜索关键词不能为空"}, status=400)
        
        results = search_data(query)
        return JsonResponse({"status": "success", "data": results})
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["GET"])
def fuzzy_search(request):
    """模糊搜索"""
    try:
        keyword = request.GET.get('keyword', '')
        if not keyword:
            return JsonResponse({"status": "error", "message": "搜索关键词不能为空"}, status=400)
        
        results = search_by_any_field(keyword)
        return JsonResponse({"status": "success", "data": results})
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["GET"])
def get_all_data(request):
    """获取所有数据"""
    try:
        results = search_all()
        return JsonResponse({"status": "success", "data": results})
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["DELETE"])
@csrf_exempt
def delete_data(request, doc_id):
    """删除数据"""
    try:
        success = delete_by_id(doc_id)
        if success:
            return JsonResponse({"status": "success", "message": "数据删除成功"})
        else:
            return JsonResponse({"status": "error", "message": "数据删除失败"}, status=500)
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["PUT"])
@csrf_exempt
def update_data(request, doc_id):
    """更新数据"""
    try:
        data = json.loads(request.body.decode('utf-8'))
        success = update_by_id(doc_id, data)
        if success:
            return JsonResponse({"status": "success", "message": "数据更新成功"})
        else:
            return JsonResponse({"status": "error", "message": "数据更新失败"}, status=500)
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["GET"])
def get_data(request, doc_id):
    """获取单个数据"""
    try:
        result = get_by_id(doc_id)
        if result:
            return JsonResponse({"status": "success", "data": result})
        else:
            return JsonResponse({"status": "error", "message": "数据不存在"}, status=404)
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["POST"])
@csrf_exempt
def add_user(request):
    """添加用户"""
    try:
        data = json.loads(request.body.decode('utf-8'))
        success = write_user_data(data)
        if success:
            return JsonResponse({"status": "success", "message": "用户添加成功"})
        else:
            return JsonResponse({"status": "error", "message": "用户添加失败"}, status=500)
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["GET"])
def get_users(request):
    """获取所有用户"""
    try:
        users = get_all_users()
        return JsonResponse({"status": "success", "data": users})
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["DELETE"])
@csrf_exempt
def delete_user(request, username):
    """删除用户"""
    try:
        success = delete_user_by_username(username)
        if success:
            return JsonResponse({"status": "success", "message": "用户删除成功"})
        else:
            return JsonResponse({"status": "error", "message": "用户删除失败"}, status=500)
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)


@require_http_methods(["PUT"])
@csrf_exempt
def update_user(request, username):
    """更新用户权限"""
    try:
        data = json.loads(request.body.decode('utf-8'))
        new_permission = data.get('permission', 1)
        success = update_user_permission(username, new_permission)
        if success:
            return JsonResponse({"status": "success", "message": "用户权限更新成功"})
        else:
            return JsonResponse({"status": "error", "message": "用户权限更新失败"}, status=500)
    except Exception as e:
        return JsonResponse({"status": "error", "message": str(e)}, status=500)