From c3820b1f593d36b8cab45ea0633e3f96d1fc1bd1 Mon Sep 17 00:00:00 2001
From: Priyan Vaithilingam <priyanmuthu@gmail.com>
Date: Tue, 9 May 2023 10:43:46 -0400
Subject: [PATCH] sort of working CSV node -- without handles

---
 chain-forge/src/CsvNode.js | 74 +++++++++++++++++++++++++++++++-------
 chain-forge/src/index.css  | 19 ++++++++++
 2 files changed, 80 insertions(+), 13 deletions(-)

diff --git a/chain-forge/src/CsvNode.js b/chain-forge/src/CsvNode.js
index 0cf1f2f..678b906 100644
--- a/chain-forge/src/CsvNode.js
+++ b/chain-forge/src/CsvNode.js
@@ -1,33 +1,81 @@
 import React, { useState, useRef, useEffect, useCallback } from 'react';
-import { Card, Text} from '@mantine/core';
+import { Card, Text } from '@mantine/core';
 import useStore from './store';
 import NodeLabel from './NodeLabelComponent'
-import { IconFileText } from '@tabler/icons-react';
+import { IconCsv, IconFileText } from '@tabler/icons-react';
 import { edit } from 'ace-builds';
 
 const CsvNode = ({ data, id }) => {
     const setDataPropsForNode = useStore((state) => state.setDataPropsForNode);
-    const content = "test content";
+    const [contentDiv, setContentDiv] = useState(null);
+    const [fields, setFields] = useState([]);
+    const [isEditing, setIsEditing] = useState(false);
 
+    const processCsv = (csv) => {
+        // Split the input string by rows, and merge
+        var res = csv.split('\n').join(',');
+
+        // remove all the empty or whitespace-only elements
+        return res.split(',').map(e => e.trim()).filter(e => e.length > 0);
+    }
 
     // Handle a change in a text fields' input.
     const handleInputChange = useCallback((event) => {
         // Update the data for this text fields' id.
-        let new_data = { 'text': event.target.value };
+        let new_data = {'text': event.target.value};
         setDataPropsForNode(id, new_data);
     }, [id, setDataPropsForNode]);
 
+    const handKeyDown = useCallback((event) => {
+        if (event.key === 'Enter') {
+            setIsEditing(false);
+        }
+    }, []);
+
+    const handleDivOnClick = useCallback((event) => {
+        setIsEditing(true);
+    }, []);
+
+    // Initialize fields (run once at init)
+    useEffect(() => {
+        if (!data.text) {
+            setIsEditing(true);
+        }
+    }, []);
+
+    // when data.text changes, update the content div
+    useEffect(() => {
+        if(isEditing) {
+            var text_val = data.text || '';
+            setContentDiv(
+                <div className="input-field" key={id}>
+                    <textarea id={id} name={id} className="text-field-fixed nodrag" rows="2" cols="40" onChange={handleInputChange} placeholder='Paste your CSV text here' onKeyDown={handKeyDown} value={text_val} />
+                </div>
+            );
+            return
+        }
+        if (!data.text) return;
+        // Take the data.text as csv (only 1 row), and get individual elements
+        const elements = processCsv(data.text);
+
+        // generate a HTML code that highlights the elements
+        const html = [];
+        elements.forEach((e, idx) => {
+            html.push(<span key={idx} className="csv-element">{e}</span>);
+            if (idx < elements.length - 1) {
+                html.push(<span key={idx + 'comma'} className="csv-comma">,</span>);
+            }
+        });
+
+        setContentDiv(<div className='csv-div' onClick={handleDivOnClick}>
+            {html}
+        </div>);
+    }, [id, data.text, isEditing, handleDivOnClick, handleInputChange, handKeyDown]);
+
     return (
         <div className="text-fields-node cfnode">
-            <NodeLabel title={data.title || 'CSV Node'} nodeId={id} icon={<IconFileText size="16px" />} />
-            <Card shadow="sm" padding="lg" radius="md" withBorder>
-
-                <Text size="sm" color="dimmed">
-                    With Fjord Tours you can explore more of the magical fjord landscapes with tours and
-                    activities on and around the fjords of Norway
-                </Text>
-            </Card>
-
+            <NodeLabel title={data.title || 'CSV Node'} nodeId={id} icon={<IconCsv size="16px" />} />
+            {contentDiv}
         </div>
     );
 };
diff --git a/chain-forge/src/index.css b/chain-forge/src/index.css
index 346977a..0cb84fc 100644
--- a/chain-forge/src/index.css
+++ b/chain-forge/src/index.css
@@ -21,4 +21,23 @@ code {
 
 .script-node-input {
   min-width: 300px;
+}
+
+.csv-element {
+  position: relative;
+  color: #ffffff;
+  background-color: #2cba6c;
+  font-size: inherit;
+  padding: .2em .4em;
+  border-radius: 6px;
+  margin: 0 6px;
+}
+
+/* set a muted text */
+.csv-comma {
+  color: #FFC107;
+}
+
+.csv-div  {
+  width: 350px;
 }
\ No newline at end of file