using Infrastructure;
using Jint;
using LitJson;
using Model;
using Model.Custom;
using Model.Source;

namespace Util.Logic
{
    public class LogicNodeHelper
    {
        /// <summary>
        /// 如果-否则节点
        /// </summary>
        /// <param name="node">节点数据</param>
        /// <param name="paramList">参数列表</param>
        /// <param name="parentNodeParamList">父节点参数列表</param>
        public static List<bool> ifElse(NodeList node, List<ParamList> paramList)
        {
            List<bool> ifElseResult = new List<bool>(); // 如果-否则节点结果
            JsonData nodeData = node.nodeData;
            JsonData ifCondition = nodeData["data"]["formData"]["ifelse"]["value"]; // 如果条件
            int ifIndex = 0; // 如果条件索引
            foreach (JsonData item in ifCondition)
            {
                string conditionExpression = ""; // 条件表达式
                string logicTag = item["logic"].ToString(); // 逻辑
                JsonData conditions = item["conditions"]; // 条件
                foreach (JsonData condition in conditions)
                {
                    string oper = condition["operator"].ToString(); // 运算符
                    string value = condition["value"].ToString(); // 值
                    string variable = condition["variable"].ToString(); // 变量
                    if (variable.Contains(".") && variable.Contains("output"))
                    {
                        variable = variable.Substring(variable.LastIndexOf(".") + 1);
                        var param = paramList.FirstOrDefault(x => x.paramName == variable);
                        if (param != null)
                        {
                            string paramValue = param.paramValue;
                            string paramType = param.paramType;
                            conditionExpression += operatorTransfer(param, oper, paramValue);
                            if (logicTag == "and")
                            {
                                conditionExpression += " && ";
                            }
                            else if (logicTag == "or")
                            {
                                conditionExpression += " || ";
                            }
                        }
                    }
                }
                if (conditionExpression.EndsWith(" && ") || conditionExpression.EndsWith(" || "))
                {
                    conditionExpression = conditionExpression.Substring(0, conditionExpression.Length - 4);
                }
                ifElseResult.Add(Utils.EvaluateBoolean(conditionExpression));
                ifIndex += 1;
            }
            return ifElseResult;
        }

        /// <summary>
        /// 迭代节点
        /// </summary>
        /// <param name="node">节点数据</param>
        /// <param name="paramList">参数列表</param>
        public static List<ParamList> iteration(NodeList node, List<ParamList> paramList)
        {
            JsonData nodeData = node.nodeData;
            string inputField = nodeData["data"]["formData"]["input"]["value"]?.ToString() ?? string.Empty; // 迭代字段
            inputField = inputField.Substring(inputField.LastIndexOf(".") + 1);
            ParamList inputFieldParam = paramList.FirstOrDefault(x => x.paramName == inputField) ?? new ParamList(); // 迭代字段值
            List<ParamList> paramListObj = new List<ParamList>();
            paramListObj.Add(new ParamList()
            {
                nodeId = node.nodeId,
                paramName = inputFieldParam.paramName,
                paramType = inputFieldParam.paramType,
                paramValue = inputFieldParam.paramValue
            });
            paramListObj.Add(new ParamList()
            {
                nodeId = node.nodeId,
                paramName = "nodeId",
                paramType = "string",
                paramValue = node.nodeId
            });
            return paramListObj;
        }
        /// <summary>
        /// 迭代子流程起始节点
        /// </summary>
        /// <param name="node"></param>
        /// <param name="paramList"></param>
        public static List<ParamList> iterationChildStart(NodeList node, List<ParamList> paramList)
        { 
            JsonData nodeData = node.nodeData;
            string inputField = nodeData["data"]["formData"][node.nodeId]["value"]?.ToString() ?? string.Empty; // 迭代字段
            inputField = inputField.Substring(inputField.LastIndexOf(".") + 1);
            ParamList inputFieldParam = paramList.FirstOrDefault(x => x.paramName == inputField) ?? new ParamList(); // 迭代字段值
            List<ParamList> paramListObj = new List<ParamList>();
            paramListObj.Add(new ParamList()
            {
                nodeId = node.nodeId,
                paramAttribute = "iterationInputField",
                paramName = inputFieldParam.paramName,
                paramType = inputFieldParam.paramType,
                paramValue = inputFieldParam.paramValue
            });
            return paramListObj;
        }
        /// <summary>
        /// 跳出循环节点
        /// </summary>
        /// <param name="node"></param>
        /// <param name="paramList"></param>
        public static void iterationBreak(NodeList node, List<ParamList> paramList)
        { 

        }

        /// <summary>
        /// 代码执行节点
        /// </summary>
        /// <param name="node"></param>
        /// <param name="paramList"></param>
        public static void codeExecute(NodeList node, List<ParamList> paramList)
        { 
            JsonData nodeData = node.nodeData;
            string code = nodeData["data"]["formData"]["code"]["value"]["code"]["content"].ToString(); // 代码
            JsonData outputParam = nodeData["data"]["formData"]["output"]["value"]; // 输出参数
            var engine = new Engine();
            engine.Execute(code);
            foreach (JsonData param in outputParam)
            {
                string paramName = param["label"].ToString(); // 字段名
                paramList.Add(new ParamList()
                {
                    nodeId = node.nodeId,
                    paramName = paramName,
                    paramValue = engine.GetValue(paramName).ToString(),
                    paramType = param["type"][0].ToString(),
                });
            }
        }

        /// <summary>
        /// 运算符转换
        /// </summary>
        /// <param name="oper">运算符</param>
        /// <returns>转换后的运算符</returns>
        public static string operatorTransfer(ParamList param, string oper, string paramValue)
        {
            if (oper == "equal") //等于
            { 
                if(param.paramType == "string" || param.paramType == "time")
                {
                    return "'" + param.paramValue + "' == '" + paramValue + "'";
                }
                return param.paramValue + " == " + paramValue;
            }
            else if (oper == "not_equal") //不等于
            {
                if(param.paramType == "string" || param.paramType == "time")
                {
                    return "'" + param.paramValue + "' != '" + paramValue + "'";
                }
                return param.paramValue + " != " + paramValue;
            }
            else if (oper == "greater") //大于
            {
                return param.paramValue + " > " + paramValue;
            }
            else if (oper == "greater_equal") //大于等于
            {
                return param.paramValue + " >= " + paramValue;
            }
            else if (oper == "less") //小于
            {
                return param.paramValue + " < " + paramValue;
            }
            else if (oper == "less_equal") //小于等于
            {
                return param.paramValue + " <= " + paramValue;
            }
            else if (oper == "between") //在之间
            {
                string[] betweenValues = paramValue.Split(',');
                return param.paramValue + " >= " + betweenValues[0] + " && " + param.paramValue + " <= " + betweenValues[1];
            }
            else if (oper == "not_between") //不在之间
            {
                string[] betweenValues = paramValue.Split(',');
                return "(" + param.paramValue + " < " + betweenValues[0] + " || " + param.paramValue + " > " + betweenValues[1] + ")";
            }
            else if (oper == "contains") //包含
            {
                return "Contains('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "not_contains") //不包含
            {
                return "!Contains('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "starts_with") //以...开头
            {
                return "StartsWith('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "ends_with") //以...结尾
            {
                return "EndsWith('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "matches_regex") //匹配正则表达式
            {
                return "Match('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "not_matches_regex") //不匹配正则表达式
            {
                return "!Match('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "is_empty")
            {
                return "IsNullOrEmpty('" + param.paramValue + "')";
            }
            else if (oper == "is_not_empty") //不为空
            {
                return "!" + "IsNullOrEmpty('" + param.paramValue + "')";
            }
            else if (oper == "is_null") //为空
            {
                return "('" + param.paramValue + "'=='{}' || '" + param.paramValue + "'=='[]')";
            }
            else if (oper == "is_not_null") //不为空
            {
                return "('" + param.paramValue + "'!='{}' || '" + param.paramValue + "'!='[]')";
            }
            else if (oper == "in") //在...中
            {
                return "In('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "not_in") //不在...中
            {
                return "!In('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "array_contains") //数组包含
            {
                return "In('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "array_not_contains") //数组不包含 
            {
                return "!In('" + param.paramValue + "', '" + paramValue + "')";
            }
            else if (oper == "array_length_equal") //数组长度等于
            {
                return "ArrayLen('" + param.paramValue + "') == " + paramValue;
            }
            else if (oper == "array_length_greater")
            {
                return "ArrayLen('" + param.paramValue + "') > " + paramValue;
            }
            else if (oper == "array_length_less") //数组长度小于
            {
                return "ArrayLen('" + param.paramValue + "') < " + paramValue;
            }
            else if (oper == "is_true") //为真
            {
                return param.paramValue + " == true";
            }
            else if (oper == "is_false") //为假
            {
                return param.paramValue + " == false";
            }
            else if (oper == "date_equal") //日期等于
            {
                return "'" + param.paramValue + "' == '" + paramValue + "'";
            }
            else if (oper == "date_before") //日期之前
            {
                return "'" + param.paramValue + "' < '" + paramValue + "'";
            }
            else if (oper == "date_after") //日期之后
            {
                return "'" + param.paramValue + "' > '" + paramValue + "'";
            }
            else if (oper == "date_between") //日期之间
            {
                string[] betweenValues = paramValue.Split(" - ", StringSplitOptions.None);
                return "'" + param.paramValue + "' >= '" + betweenValues[0] + "' && '" + param.paramValue + "' <= '" + betweenValues[1] + "'";
            }
            return "";
        }
    
    }
}