"use client";

import React from "react";
import { Button } from "@/components/ui/button";
import { Plus, Trash2 } from "lucide-react";
import { ColumnInfo } from "@/lib/api/dataflow";
import { DataSaveSettings } from "@/types/connectionTypes";
import { generateConditionId } from "@/utils/connectionUtils";
import { useActionConditionHelpers } from "@/hooks/useConditionManager";
import { ActionConditionRenderer } from "./ActionConditionRenderer";

interface ActionConditionsSectionProps {
  action: DataSaveSettings["actions"][0];
  actionIndex: number;
  settings: DataSaveSettings;
  onSettingsChange: (settings: DataSaveSettings) => void;
  fromTableColumns: ColumnInfo[];
  toTableColumns: ColumnInfo[];
  fromTableName?: string;
  toTableName?: string;
}

export const ActionConditionsSection: React.FC<ActionConditionsSectionProps> = ({
  action,
  actionIndex,
  settings,
  onSettingsChange,
  fromTableColumns,
  toTableColumns,
  fromTableName,
  toTableName,
}) => {
  const { addActionGroupStart, addActionGroupEnd, getActionCurrentGroupLevel } = useActionConditionHelpers();

  // INSERT가 아닌 액션 타입인지 확인
  const isConditionRequired = action.actionType !== "insert";

  // 유효한 조건이 있는지 확인 (group-start, group-end만 있는 경우 제외)
  const hasValidConditions =
    action.conditions?.some((condition) => {
      if (condition.type !== "condition") return false;
      if (!condition.field || !condition.operator) return false;

      // value가 null, undefined, 빈 문자열이면 유효하지 않음
      const value = condition.value;
      if (value === null || value === undefined || value === "") return false;

      return true;
    }) || false;

  const addActionCondition = () => {
    const newActions = [...settings.actions];
    if (!newActions[actionIndex].conditions) {
      newActions[actionIndex].conditions = [];
    }
    const currentConditions = newActions[actionIndex].conditions || [];
    const newCondition = {
      id: generateConditionId(),
      type: "condition" as const,
      field: "",
      operator: "=" as const,
      value: "",
      dataType: "string",
      tableType: undefined, // 사용자가 직접 선택하도록
      // 첫 번째 조건이 아니고, 바로 앞이 group-start가 아니면 logicalOperator 추가
      ...(currentConditions.length > 0 &&
        currentConditions[currentConditions.length - 1]?.type !== "group-start" && {
          logicalOperator: "AND" as const,
        }),
    };
    newActions[actionIndex].conditions = [...currentConditions, newCondition];
    onSettingsChange({ ...settings, actions: newActions });
  };

  const clearAllConditions = () => {
    const newActions = [...settings.actions];
    newActions[actionIndex].conditions = [];
    onSettingsChange({ ...settings, actions: newActions });
  };

  return (
    <div className="mt-3">
      <details className="group">
        <summary
          className={`flex cursor-pointer items-center justify-between rounded border p-2 text-xs font-medium hover:bg-gray-50 hover:text-gray-900 ${
            isConditionRequired && !hasValidConditions
              ? "border-red-300 bg-destructive/10 text-red-700"
              : "border-gray-200 text-gray-700"
          }`}
        >
          <div className="flex items-center gap-2">
            🔍 이 액션의 실행 조건
            {isConditionRequired ? (
              <span className="rounded bg-destructive/20 px-1 py-0.5 text-xs font-semibold text-red-700">필수</span>
            ) : (
              <span className="text-gray-500">(선택사항)</span>
            )}
            {action.conditions && action.conditions.length > 0 && (
              <span className="rounded-full bg-primary/20 px-2 py-0.5 text-xs text-blue-700">
                {action.conditions.length}개
              </span>
            )}
            {isConditionRequired && !hasValidConditions && (
              <span className="rounded bg-destructive/20 px-1 py-0.5 text-xs text-destructive">⚠️ 조건 필요</span>
            )}
          </div>
          {action.conditions && action.conditions.length > 0 && (
            <Button
              size="sm"
              variant="ghost"
              onClick={(e) => {
                e.preventDefault();
                e.stopPropagation();
                clearAllConditions();
              }}
              className="h-5 w-5 p-0 text-red-500 hover:text-red-700"
              title="조건 모두 삭제"
            >
              <Trash2 className="h-3 w-3" />
            </Button>
          )}
        </summary>
        <div className="mt-2 space-y-2 border-l-2 border-gray-100 pl-4">
          <div className="mb-2 flex items-center justify-between">
            <div className="flex gap-1">
              <Button size="sm" variant="outline" onClick={addActionCondition} className="h-6 text-xs">
                <Plus className="mr-1 h-2 w-2" />
                조건 추가
              </Button>
              <Button
                size="sm"
                variant="outline"
                onClick={() => addActionGroupStart(actionIndex, settings, onSettingsChange)}
                className="h-6 text-xs"
              >
                그룹 시작 (
              </Button>
              <Button
                size="sm"
                variant="outline"
                onClick={() => addActionGroupEnd(actionIndex, settings, onSettingsChange)}
                className="h-6 text-xs"
              >
                그룹 끝 )
              </Button>
            </div>
          </div>

          {/* 조건이 없을 때 안내 메시지 */}
          {(!action.conditions || action.conditions.length === 0) && (
            <div
              className={`rounded border p-3 text-xs ${
                isConditionRequired
                  ? "border-destructive/20 bg-destructive/10 text-red-700"
                  : "border-gray-200 bg-gray-50 text-muted-foreground"
              }`}
            >
              {isConditionRequired ? (
                <div className="flex items-start gap-2">
                  <span className="text-red-500">⚠️</span>
                  <div>
                    <div className="font-medium">실행조건이 필요합니다</div>
                    <div className="mt-1">
                      {action.actionType.toUpperCase()} 액션은 언제 실행될지 결정하는 조건이 반드시 필요합니다.
                      <br />
                      <strong>필드, 연산자, 값</strong>을 모두 입력해야 합니다.
                      <br />
                      예: user_name = '관리자우저' AND status = 'active'
                    </div>
                  </div>
                </div>
              ) : (
                <div>조건이 설정되지 않았습니다. INSERT 액션은 조건 없이도 실행 가능합니다.</div>
              )}
            </div>
          )}

          {action.conditions && action.conditions.length > 0 && (
            <div className="space-y-2">
              {action.conditions.map((condition, condIndex) => (
                <div key={`action-${actionIndex}-condition-${condition.id}`}>
                  <ActionConditionRenderer
                    condition={condition}
                    condIndex={condIndex}
                    actionIndex={actionIndex}
                    settings={settings}
                    onSettingsChange={onSettingsChange}
                    fromTableColumns={fromTableColumns}
                    toTableColumns={toTableColumns}
                    fromTableName={fromTableName}
                    toTableName={toTableName}
                    getActionCurrentGroupLevel={getActionCurrentGroupLevel}
                  />
                </div>
              ))}
            </div>
          )}
        </div>
      </details>
    </div>
  );
};
