feat: add math extension to editor

front/components/Editor/Editor.tsx

@@ -19,6 +19,7 @@ import ImageBlock from "./Extensions/Image/ImageBlock";
 import Youtube from "@tiptap/extension-youtube";
 import VideoBlock from "./Extensions/Video/VideoBlock";
 import { Save } from "lucide-react";
+import MathEquationBlock from "./Extensions/MathEquation/MathEquationBlock";
 
 interface Editor {
   content: string;
@@ -54,6 +55,10 @@ function Editor(props: Editor) {
         editable: true,
         lecture: props.lecture,
       }),
+      MathEquationBlock.configure({
+        editable: true,
+        lecture: props.lecture,
+      }),
       Youtube.configure({
         controls: true,
         modestBranding: true,

front/components/Editor/Extensions/MathEquation/MathEquationBlock.ts

@@ -0,0 +1,35 @@
+import { mergeAttributes, Node } from "@tiptap/core";
+import { ReactNodeViewRenderer } from "@tiptap/react";
+
+import MathEquationBlockComponent from "./MathEquationBlockComponent";
+
+export default Node.create({
+  name: "blockMathEquation",
+  group: "block",
+
+  atom: true,
+
+  addAttributes() {
+    return {
+      math_equation: {
+        default: "",
+      },
+    };
+  },
+
+  parseHTML() {
+    return [
+      {
+        tag: "block-math-equation",
+      },
+    ];
+  },
+
+  renderHTML({ HTMLAttributes }) {
+    return ["block-math-equation", mergeAttributes(HTMLAttributes), 0];
+  },
+
+  addNodeView() {
+    return ReactNodeViewRenderer(MathEquationBlockComponent);
+  },
+});

front/components/Editor/Extensions/MathEquation/MathEquationBlockComponent.tsx

@@ -0,0 +1,116 @@
+import { NodeViewWrapper } from "@tiptap/react";
+import React from "react";
+import styled from "styled-components";
+import "katex/dist/katex.min.css";
+import { InlineMath, BlockMath } from "react-katex";
+import { Edit, Save } from "lucide-react";
+
+function MathEquationBlockComponent(props: any) {
+  const [equation, setEquation] = React.useState(props.node.attrs.math_equation);
+  const [isEditing, setIsEditing] = React.useState(false);
+  const isEditable = props.extension.options.editable;
+
+  const handleEquationChange = (event: React.ChangeEvent<any>) => {
+    setEquation(event.target.value);
+    props.updateAttributes({
+      math_equation: equation,
+    });
+  };
+
+  const saveEquation = () => {
+    props.updateAttributes({
+      math_equation: equation,
+    });
+    setIsEditing(false);
+  };
+
+  return (
+    <NodeViewWrapper className="block-math-equation">
+      <MathEqWrapper>
+        {isEditable && (
+          <MathEqTopMenu>
+            <button onClick={() => setIsEditing(true)}>
+              <Edit size={15}></Edit>
+            </button>
+          </MathEqTopMenu>
+        )}
+        <BlockMath>{equation}</BlockMath>
+        {isEditing && (
+          <EditBar>
+            <input value={equation} onChange={handleEquationChange} placeholder="Insert a Math Equation (LaTeX) " type="text" />
+            <button onClick={() => saveEquation()}>
+              <Save size={15}></Save>
+            </button>
+          </EditBar>
+        )}
+      </MathEqWrapper>
+    </NodeViewWrapper>
+  );
+}
+
+export default MathEquationBlockComponent;
+
+const MathEqWrapper = styled.div`
+  display: flex;
+  flex-direction: column;
+  background: #f9f9f9a2;
+  border-radius: 8px;
+  margin: 20px;
+  padding: 20px;
+  min-height: 74px;
+  border: ${(props) => (props.contentEditable ? "2px dashed #713f1117" : "none")};
+`;
+
+const MathEqTopMenu = styled.div`
+  display: flex;
+  justify-content: flex-end;
+  button {
+    margin-left: 10px;
+    cursor: pointer;
+    border: none;
+    background: none;
+    font-size: 14px;
+    color: #494949;
+  }
+`;
+
+const EditBar = styled.div`
+  display: flex;
+  justify-content: flex-end;
+  margin-top: 10px;
+  background-color: white;
+  border-radius: 10px;
+  padding: 5px;
+  color: #5252528d;
+  align-items: center;
+  justify-content: space-between;
+  height: 50px;
+  border: solid 1px #52525224;
+
+  button {
+    margin-left: 10px;
+    margin-right: 7px;
+    cursor: pointer;
+    border: none;
+    background: none;
+    font-size: 14px;
+    color: #494949;
+  }
+
+  input {
+    border: none;
+    background: none;
+    font-size: 14px;
+    color: #494949;
+    width: 100%;
+    font-family: "DM Sans", sans-serif;
+    padding-left: 10px;
+    &:focus {
+      outline: none;
+    }
+
+    &::placeholder {
+      color: #49494936;
+    }
+  }
+`;

front/components/Editor/Toolbar/ToolbarButtons.tsx

@@ -1,6 +1,6 @@
 import styled from "styled-components";
 import { FontBoldIcon, FontItalicIcon, StrikethroughIcon, ArrowLeftIcon, ArrowRightIcon, OpacityIcon } from "@radix-ui/react-icons";
-import { AlertCircle, AlertTriangle, ImagePlus, Info, Video, Youtube } from "lucide-react";
+import { AlertCircle, AlertTriangle, ImagePlus, Info, Sigma, Video, Youtube } from "lucide-react";
 
 export const ToolbarButtons = ({ editor }: any) => {
   if (!editor) {
@@ -90,6 +90,19 @@ export const ToolbarButtons = ({ editor }: any) => {
       <ToolBtn onClick={() => addYoutubeVideo()}>
         <Youtube size={15} />
       </ToolBtn>
+      <ToolBtn
+        onClick={() =>
+          editor
+            .chain()
+            .focus()
+            .insertContent({
+              type: "blockMathEquation",
+            })
+            .run()
+        }
+      >
+        <Sigma size={15} />
+      </ToolBtn>
     </ToolButtonsWrapper>
   );
 };