From 88ae4fb0ebc5518fad3e932b569c78e522ab3f08 Mon Sep 17 00:00:00 2001
From: Ahmad Sandid <ahmad1702@gmail.com>
Date: Wed, 3 May 2023 18:46:38 -0500
Subject: [PATCH] #12 - Drag and Drop

---
 src/app/jsx-json/page.tsx            |  18 +++--
 src/app/jupyter-python/page.tsx      |  14 +++-
 src/components/conversion-input.tsx  | 111 +++++++++++++++++++++++++++
 src/components/conversion-layout.tsx |  18 ++---
 src/components/ui/button.tsx         |  29 ++++---
 src/utils/string.ts                  |  10 +++
 6 files changed, 169 insertions(+), 31 deletions(-)
 create mode 100644 src/components/conversion-input.tsx
 create mode 100644 src/utils/string.ts

diff --git a/src/app/jsx-json/page.tsx b/src/app/jsx-json/page.tsx
index 491727d..b455ea2 100644
--- a/src/app/jsx-json/page.tsx
+++ b/src/app/jsx-json/page.tsx
@@ -5,8 +5,9 @@
 "use client"
 import { useMemo, useRef, useState } from "react";
 
-import ConversionLayout from "@/components/conversion-layout";
 import EditorToolbar from '@/components/EditorToolbar';
+import ConversionInput from "@/components/conversion-input";
+import ConversionLayout from "@/components/conversion-layout";
 import JSXson from "@/components/jsxson/JSXToJSON";
 import { Separator } from "@/components/ui/separator";
 import ShowHide from "@/components/ui/show-hide";
@@ -63,16 +64,21 @@ export default function JSXsonPage() {
         }
     }
 
+    const inputSection = (
+        <ConversionInput
+            ref={inputRef}
+            onFromContentsChange={handleFromContentsChange}
+            acceptableFileExtensions={' .json, .tsx or .jsx'}
+        />
+    )
+
     return (
         <ConversionLayout
-            ref={inputRef}
             title={`JSX <--> JSON`}
             description="A converter between JSX Props and a JSON object whose keys are the same as the JSX Props."
-            onFromContentsChange={handleFromContentsChange}
             collapsed={showSecondEditor}
-            secondEditor={
-                <JSXson value={toContents} />
-            }
+            secondEditor={<JSXson value={toContents} />}
+            inputSection={inputSection}
         >
             <ShowHide show={showSecondEditor} className="w-full flex h-8">
                 <div className="flex-1 font-bold text-xl flex justify-end">
diff --git a/src/app/jupyter-python/page.tsx b/src/app/jupyter-python/page.tsx
index 36c5dcc..a6569c9 100644
--- a/src/app/jupyter-python/page.tsx
+++ b/src/app/jupyter-python/page.tsx
@@ -7,6 +7,7 @@
 import { useMemo, useRef, useState } from "react";
 
 import EditorToolbar from '@/components/EditorToolbar';
+import ConversionInput from "@/components/conversion-input";
 import ConversionLayout from "@/components/conversion-layout";
 import JupyterToPython from '@/components/jupyswapp/JupyterToPython';
 import PythonToJupyter from '@/components/jupyswapp/PythonToJupyter';
@@ -16,8 +17,6 @@ import { sampleJupyterNotebook } from '@/data/sampleJupyterNotebook';
 import { Notebook } from "@/types/jupyter";
 import pythonToJupyter, { jupyterToPython } from '@/utils/jupyter';
 
-
-
 export type JupySwapEditMode = 'jupyter-to-py' | 'py-to-jupyter' | 'none'
 export default function JupyterPythonPage() {
     const inputRef = useRef<HTMLTextAreaElement>(null)
@@ -85,12 +84,18 @@ export default function JupyterPythonPage() {
         }
     }
 
+    const inputSection = (
+        <ConversionInput
+            ref={inputRef}
+            onFromContentsChange={handleFromContentsChange}
+            acceptableFileExtensions={' .py or .ipynb'}
+        />
+    )
+
     return (
         <ConversionLayout
-            ref={inputRef}
             title={"Jupyter ↔ Python"}
             description={"Convert Jupyter Notebooks to Python scripts and vice versa."}
-            onFromContentsChange={handleFromContentsChange}
             collapsed={showSecondEditor}
             secondEditor={
                 editMode === 'py-to-jupyter' ? (
@@ -103,6 +108,7 @@ export default function JupyterPythonPage() {
                     />
                 )
             }
+            inputSection={inputSection}
         >
             <ShowHide show={showSecondEditor} className="w-full flex h-8">
                 <div className="flex-1 font-bold text-xl flex justify-end">
diff --git a/src/components/conversion-input.tsx b/src/components/conversion-input.tsx
new file mode 100644
index 0000000..7e560a5
--- /dev/null
+++ b/src/components/conversion-input.tsx
@@ -0,0 +1,111 @@
+import { RefObject, forwardRef, useState } from 'react';
+
+import { cn } from '@/utils/cn';
+import { ClipboardEdit, Paperclip, Upload } from 'lucide-react';
+import { buttonVariants } from './ui/button';
+import { Textarea } from './ui/text-area';
+
+type ConversionInputProps = {
+    onFromContentsChange: (e: React.ChangeEvent<HTMLTextAreaElement>) => void;
+    acceptableFileExtensions?: string
+}
+
+const ConversionInput = forwardRef<HTMLTextAreaElement, ConversionInputProps>(({ onFromContentsChange, acceptableFileExtensions = '', ...props }, ref) => {
+    // Idealy we would just want this is as a formatted variable. But due to next.js hydration, we need to use state
+    const [isDragActive, setIsDragActive] = useState(false)
+
+    const textAreaRef = (ref as RefObject<HTMLTextAreaElement>).current
+    const handleFile = (file: File) => {
+        console.log()
+        const reader = new FileReader();
+        reader.readAsText(file, "UTF-8");
+        reader.onload = function (evt) {
+            if (evt.target) {
+                const result = evt.target.result as string
+                onFromContentsChange({
+                    target: {
+                        value: result
+                    }
+                } as React.ChangeEvent<HTMLTextAreaElement>)
+
+                if (textAreaRef) {
+                    textAreaRef.value = result
+                }
+            }
+        }
+        reader.onerror = function (evt) {
+            console.error(evt.target?.error)
+        }
+        setIsDragActive(false)
+    }
+
+    const handleDrop = (e: React.DragEvent<HTMLTextAreaElement>) => {
+        e.preventDefault()
+        e.stopPropagation()
+        if (e && e.dataTransfer && e.dataTransfer.files) {
+            const file = e.dataTransfer.files?.[0]
+            if (file) {
+                handleFile(file)
+            }
+        }
+    }
+
+
+    return (
+        <div className='relative h-full'>
+            <div className='absolute h-full w-full flex items-center justify-center pointer-events-none flex-col gap-2'>
+                {
+                    textAreaRef?.value === '' && (
+                        isDragActive ? (
+                            <>
+                                <Paperclip className='h-10 w-10' />
+                                <div className='font-semibold'>
+                                    Drop it to convert!
+                                </div>
+                            </>
+                        ) : (
+                            <>
+                                <ClipboardEdit className='h-10 w-10 pointer-events-none' />
+                                <div className='font-semibold pointer-events-none'>
+                                    Drag and drop or Paste in the contents of a{acceptableFileExtensions} file here
+                                </div>
+                                <input
+                                    id="from-contents-file-upload-input"
+                                    type='file'
+                                    className='hidden'
+                                    onChange={(e) => {
+                                        const file = e.target.files?.[0]
+                                        if (file) {
+                                            handleFile(file)
+                                        }
+                                    }}
+                                />
+                                <label htmlFor='from-contents-file-upload-input' className={buttonVariants({ className: 'pointer-events-auto cursor-pointer' })}>
+                                    <Upload className='h-5 w-5 mr-2' />
+                                    Upload Here
+                                </label>
+                            </>
+                        )
+                    )
+                }
+            </div>
+            <Textarea
+                ref={ref}
+                className={cn("h-full resize-none duration-300", isDragActive ? 'bg-input border-dashed border-4' : '')}
+                placeholder={isDragActive ? '' : `Type or paste in the contents of a${acceptableFileExtensions} file here`}
+                onChange={onFromContentsChange}
+                onDrop={handleDrop}
+                onDragOver={(e) => {
+                    setIsDragActive(true)
+                }}
+                onDragLeave={(e) => {
+                    setIsDragActive(false)
+                }}
+            />
+        </div>
+    )
+})
+
+ConversionInput.displayName = 'ConversionInput'
+
+export default ConversionInput
\ No newline at end of file
diff --git a/src/components/conversion-layout.tsx b/src/components/conversion-layout.tsx
index b2ca77a..8501432 100644
--- a/src/components/conversion-layout.tsx
+++ b/src/components/conversion-layout.tsx
@@ -1,9 +1,8 @@
 /* eslint-disable react-hooks/rules-of-hooks */
 "use client"
-import { forwardRef, useRef } from "react";
+import { forwardRef } from "react";
 
 import ShowHide from "@/components/ui/show-hide";
-import { Textarea } from "@/components/ui/text-area";
 import { cn } from "@/utils/cn";
 import React from 'react';
 import ConversionPageHeader, { ConversionPageHeaderProps } from "./conversion-page-header";
@@ -12,19 +11,19 @@ type ConversionLayoutProps = ConversionPageHeaderProps & {
     collapsed: boolean;
     secondEditor: React.ReactNode;
     children: React.ReactNode | React.ReactNodeArray;
-    onFromContentsChange: (e: React.ChangeEvent<HTMLTextAreaElement>) => void;
+    inputSection: React.ReactNode;
 }
 
-const ConversionLayout = forwardRef<HTMLTextAreaElement, ConversionLayoutProps>(({
+const ConversionLayout = forwardRef<HTMLDivElement, ConversionLayoutProps>(({
     collapsed,
     children,
-    onFromContentsChange,
     secondEditor,
+    inputSection,
     ...conversionPageHeaderProps
 }, ref) => {
-    const inputRef = ref || useRef<HTMLTextAreaElement>(null)
     return (
         <section
+            ref={ref}
             className={cn(
                 "overflow-hidden h-[calc(100vh-4rem)] flex items-center flex-col container",
                 collapsed ? 'p-5 gap-4' : 'gap-6 pb-8 pt-6 md:py-10',
@@ -42,12 +41,7 @@ const ConversionLayout = forwardRef<HTMLTextAreaElement, ConversionLayoutProps>(
                             collapsed ? 'w-1/2' : 'w-full',
                         )}
                     >
-                        <Textarea
-                            ref={inputRef}
-                            className="h-full resize-none"
-                            placeholder="Drag and drop or Paste in the contents of a .ipynb or .py file here"
-                            onChange={onFromContentsChange}
-                        />
+                        {inputSection}
                     </div>
                     <div
                         className={cn(
diff --git a/src/components/ui/button.tsx b/src/components/ui/button.tsx
index ec4cb49..a45a5cf 100644
--- a/src/components/ui/button.tsx
+++ b/src/components/ui/button.tsx
@@ -33,17 +33,28 @@ const buttonVariants = cva(
 
 export interface ButtonProps
     extends React.ButtonHTMLAttributes<HTMLButtonElement>,
-    VariantProps<typeof buttonVariants> { }
+    VariantProps<typeof buttonVariants> {
+    as?: JSX.Element
+}
 
 const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
-    ({ className, variant, size, ...props }, ref) => {
-        return (
-            <button
-                className={cn(buttonVariants({ variant, size, className }))}
-                ref={ref}
-                {...props}
-            />
-        );
+    ({ className, variant, size, as, ...props }, ref) => {
+        const genProps = {
+            className: cn(buttonVariants({ variant, size, className })),
+            ref: ref,
+            ...props,
+        }
+        if (as !== undefined) {
+            return React.cloneElement(as, genProps)
+        } else {
+            return (
+                <button
+                    className={cn(buttonVariants({ variant, size, className }))}
+                    ref={ref}
+                    {...props}
+                />
+            );
+        }
     }
 );
 Button.displayName = "Button";
diff --git a/src/utils/string.ts b/src/utils/string.ts
new file mode 100644
index 0000000..c859c48
--- /dev/null
+++ b/src/utils/string.ts
@@ -0,0 +1,10 @@
+/* eslint-disable @typescript-eslint/no-non-null-assertion */
+export const listWordsInSentenceFormat = (
+  words: string[],
+  conjunction = "or"
+): string => {
+  if (words.length === 0) return "";
+  if (words.length === 1) return words[0]!;
+  const lastWord = words.pop();
+  return [words.join(", "), lastWord].join(` ${conjunction} `);
+};