import { ref, watch } from "vue";
import { ElMessageBox } from "element-plus";

const useJumpEditorDrawer = (curNodeRef, graphRef) => {
  // 跳转模块得抽屉状态
  const jumpDrawerRef = ref(false);
  // 跳转模块得表单数据
  const jumpFormRef = ref({
    jumpNodeId: "",
    jumpNodeName: "",
  });
  // 表单规则
  const jumpFormRuleRef = ref({
    jumpNodeName: [
      { required: true, message: "请选择跳转模块", trigger: "change" },
    ],
  });

  // 可以跳转得节点列表
  const canJumpNodeListRef = ref([]);
  // 更新可以跳转节点列表
  const updataCanJumpNodeList = () => {
    const allNode = graphRef.value.getNodes();
    const curNode = curNodeRef.value;
    const curModel = curNode.getModel();
    // 过滤出非自己本身和直接上级节点的所有节点
    const result = [];
    for (let i = 0; i < allNode.length; i++) {
      const _node = allNode[i];
      const _model = _node.getModel();
      if (_model.type === "jump-node" || _model.id === curModel.preNodeId)
        continue;
      result.push({
        jumpNodeId: _model.id,
        jumpNodeName: _model.data?.name || "",
      });
    }
    canJumpNodeListRef.value = result;
  };
  // 选择跳转节点之后赋值跳转节点名称
  const handleChangeJumpTarget = (jumpNodeId) => {
    const target = canJumpNodeListRef.value.find(
      (item) => item.jumpNodeId === jumpNodeId
    );
    jumpFormRef.value.jumpNodeId = jumpNodeId;
    jumpFormRef.value.jumpNodeName = target.jumpNodeName;
  };
  // 关闭抽屉
  const handleJumpCancel = () => {
    ElMessageBox.confirm("是否确认取消更改?")
      .then(() => {
        jumpDrawerRef.value = false;
        curNodeRef.value = null;
      })
      .catch(() => {
        // catch error
      });
  };
  // 保存
  const handleJumpSave = () => {
    if (!graphRef.value) return console.warn("画布不存在");
    const config = {
      data: {
        jumpNodeId: jumpFormRef.value.jumpNodeId,
        jumpNodeName: jumpFormRef.value.jumpNodeName,
      },
    };
    // 更新当前节点
    graphRef.value.updateItem(curNodeRef.value, config);
    jumpDrawerRef.value = false;
    curNodeRef.value = null;
  };

  // 根据传入的节点初始化内容
  const init = (node) => {
    const model = node.getModel();
    const data = model.data || {};
    jumpFormRef.value = {
      jumpNodeId: data.jumpNodeId,
      jumpNodeName: data.jumpNodeName,
    };
  };

  watch(
    () => curNodeRef.value,
    (node) => {
      if (!node) return;
      init(node);
    }
  );

  return {
    jumpDrawerRef,
    jumpFormRef,
    jumpFormRuleRef,
    canJumpNodeListRef,
    updataCanJumpNodeList,
    handleChangeJumpTarget,
    handleJumpCancel,
    handleJumpSave,
  };
};

export default useJumpEditorDrawer;