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narlblog/frontend/src/components/react/admin/Editor.tsx
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TypeScript

import { useState, useEffect, useRef, useCallback } from 'react';
import { EditorView, keymap, placeholder as cmPlaceholder } from '@codemirror/view';
import { EditorState, Compartment } from '@codemirror/state';
import { markdown, markdownLanguage } from '@codemirror/lang-markdown';
import { languages } from '@codemirror/language-data';
import { defaultKeymap, indentWithTab } from '@codemirror/commands';
import { vim } from '@replit/codemirror-vim';
import { search, searchKeymap } from '@codemirror/search';
import { closeBrackets } from '@codemirror/autocomplete';
import { renderMarkdown } from '../../../lib/markdown';
import { getPost, savePost, deletePost, getAssets, ApiError } from '../../../lib/api';
import type { Asset } from '../../../lib/types';
import AssetManager from './AssetManager';
interface Props {
editSlug?: string;
}
const salonTheme = EditorView.theme({
'&': {
backgroundColor: 'var(--crust)',
color: 'var(--text)',
border: '1px solid var(--surface1)',
borderRadius: '0.75rem',
fontSize: '14px',
},
'.cm-content': {
fontFamily: 'ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace',
padding: '1rem',
caretColor: 'var(--text)',
},
'.cm-cursor': { borderLeftColor: 'var(--text)' },
'.cm-selectionBackground': { backgroundColor: 'var(--surface2) !important' },
'&.cm-focused .cm-selectionBackground': { backgroundColor: 'var(--surface2) !important' },
'.cm-activeLine': { backgroundColor: 'var(--surface0)' },
'.cm-gutters': {
backgroundColor: 'var(--mantle)',
color: 'var(--overlay0)',
border: 'none',
},
'.cm-activeLineGutter': { backgroundColor: 'var(--surface0)' },
'.cm-panels': {
backgroundColor: 'var(--mantle)',
color: 'var(--text)',
borderTop: '1px solid var(--surface1)',
},
'.cm-searchMatch': { backgroundColor: 'var(--yellow)', opacity: '0.3' },
'.cm-searchMatch-selected': { backgroundColor: 'var(--peach)', opacity: '0.4' },
'.cm-fat-cursor': {
backgroundColor: 'var(--mauve) !important',
color: 'var(--crust) !important',
},
'&:not(.cm-focused) .cm-fat-cursor': {
outline: '1px solid var(--mauve)',
backgroundColor: 'transparent !important',
},
}, { dark: true });
// Compartment for hot-swapping vim mode without recreating the editor
const vimCompartment = new Compartment();
function clientSlugify(s: string): string {
return s
.toLowerCase()
.normalize('NFD')
.replace(/[̀-ͯ]/g, '')
.replace(/[^a-z0-9]+/g, '-')
.replace(/^-+|-+$/g, '');
}
export default function Editor({ editSlug }: Props) {
const editorRef = useRef<HTMLDivElement>(null);
const viewRef = useRef<EditorView | null>(null);
const previewRef = useRef<HTMLDivElement>(null);
const previewTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
const updatePreviewRef = useRef<() => void>(() => {});
const today = new Date().toISOString().slice(0, 10);
const [title, setTitle] = useState('');
const [slug, setSlug] = useState(editSlug || '');
const [slugTouched, setSlugTouched] = useState(!!editSlug);
const [date, setDate] = useState(today);
const [summary, setSummary] = useState('');
const [tagsInput, setTagsInput] = useState('');
const [draft, setDraft] = useState(false);
const [originalSlug, setOriginalSlug] = useState(editSlug || '');
const [alert, setAlert] = useState<{ msg: string; type: 'success' | 'error' } | null>(null);
const [showModal, setShowModal] = useState(false);
const [showPreview, setShowPreview] = useState(false);
const [mobileView, setMobileView] = useState<'edit' | 'preview'>('edit');
const [vimEnabled, setVimEnabled] = useState(() =>
typeof window !== 'undefined' && window.innerWidth > 768
);
const [showAutocomplete, setShowAutocomplete] = useState(false);
const [autocompleteAssets, setAutocompleteAssets] = useState<Asset[]>([]);
const [autocompletePos, setAutocompletePos] = useState({ top: 0, left: 0 });
function showAlertMsg(msg: string, type: 'success' | 'error') {
setAlert({ msg, type });
window.scrollTo({ top: 0, behavior: 'smooth' });
setTimeout(() => setAlert(null), 5000);
}
const updatePreview = useCallback(() => {
if (!showPreview || !viewRef.current || !previewRef.current) return;
const content = viewRef.current.state.doc.toString();
previewRef.current.innerHTML = renderMarkdown(content);
}, [showPreview]);
useEffect(() => { updatePreviewRef.current = updatePreview; }, [updatePreview]);
// Initialize CodeMirror once
useEffect(() => {
if (!editorRef.current || viewRef.current) return;
const state = EditorState.create({
doc: '',
extensions: [
vimCompartment.of(window.innerWidth > 768 ? vim() : []),
keymap.of([...defaultKeymap, ...searchKeymap, indentWithTab]),
search(),
closeBrackets(),
markdown({ base: markdownLanguage, codeLanguages: languages }),
EditorView.lineWrapping,
salonTheme,
cmPlaceholder('# A title for the work\n\n![alt text](/uploads/your-image.jpg "optional caption")\n\nNotes, context, materials...'),
EditorView.updateListener.of(update => {
if (!update.docChanged) return;
if (previewTimerRef.current) clearTimeout(previewTimerRef.current);
previewTimerRef.current = setTimeout(() => updatePreviewRef.current(), 300);
const pos = update.state.selection.main.head;
const line = update.state.doc.lineAt(pos);
const textBefore = line.text.slice(0, pos - line.from);
const lastChar = textBefore.slice(-1);
if (lastChar === '/' || lastChar === '!') {
triggerAutocomplete(update.view);
} else if (lastChar === ' ' || textBefore.length === 0) {
setShowAutocomplete(false);
}
}),
],
});
const view = new EditorView({ state, parent: editorRef.current });
viewRef.current = view;
return () => { view.destroy(); viewRef.current = null; };
}, []);
// Hot-swap vim mode via compartment reconfiguration
useEffect(() => {
if (!viewRef.current) return;
viewRef.current.dispatch({
effects: vimCompartment.reconfigure(vimEnabled ? vim() : []),
});
}, [vimEnabled]);
// Load existing post for editing
useEffect(() => {
if (!editSlug) return;
getPost(editSlug).then(post => {
if (post.title) setTitle(post.title);
if (post.summary) setSummary(post.summary);
if (post.date) setDate(post.date);
if (post.tags?.length) setTagsInput(post.tags.join(', '));
setDraft(!!post.draft);
if (post.content && viewRef.current) {
viewRef.current.dispatch({
changes: { from: 0, to: viewRef.current.state.doc.length, insert: post.content },
});
}
}).catch(() => showAlertMsg('Failed to load post.', 'error'));
}, [editSlug]);
// Auto-derive slug from title until user edits the slug field
useEffect(() => {
if (slugTouched) return;
setSlug(clientSlugify(title));
}, [title, slugTouched]);
useEffect(() => {
if (showPreview) updatePreview();
}, [showPreview, updatePreview]);
async function triggerAutocomplete(view: EditorView) {
try {
const assets = await getAssets();
setAutocompleteAssets(assets.slice(0, 8));
const pos = view.state.selection.main.head;
const coords = view.coordsAtPos(pos);
if (coords) {
const editorRect = editorRef.current?.getBoundingClientRect();
if (editorRect) {
setAutocompletePos({
top: coords.bottom - editorRect.top + 4,
left: coords.left - editorRect.left,
});
}
}
setShowAutocomplete(true);
} catch { /* ignore */ }
}
function insertAssetMarkdown(asset: Asset) {
const view = viewRef.current;
if (!view) return;
const isImage = /\.(jpg|jpeg|png|webp|gif|svg)$/i.test(asset.name);
const md = isImage ? `![${asset.name}](${asset.url})` : `[${asset.name}](${asset.url})`;
const pos = view.state.selection.main.head;
const line = view.state.doc.lineAt(pos);
const textBefore = line.text.slice(0, pos - line.from);
const triggerIdx = Math.max(textBefore.lastIndexOf('/'), textBefore.lastIndexOf('!'));
if (triggerIdx !== -1) {
const from = line.from + triggerIdx;
view.dispatch({ changes: { from, to: pos, insert: md } });
} else {
view.dispatch({ changes: { from: pos, insert: md } });
}
view.focus();
setShowAutocomplete(false);
}
function handleAssetSelect(asset: Asset) {
insertAssetMarkdown(asset);
setShowModal(false);
}
async function handleSave() {
const content = viewRef.current?.state.doc.toString() || '';
if (!title.trim() || !slug || !content) {
showAlertMsg('Title, slug, and body are required.', 'error');
return;
}
if (!/!\[[^\]]*\]\([^)]+\)/.test(content)) {
showAlertMsg('A gallery work must include at least one image — insert via the Assets panel or type "!".', 'error');
return;
}
const tags = tagsInput
.split(',')
.map(t => t.trim())
.filter(Boolean);
try {
const saved = await savePost({
slug,
old_slug: originalSlug || null,
title: title.trim(),
date,
summary: summary || null,
tags,
draft,
content,
});
showAlertMsg('Post saved!', 'success');
if (saved?.slug && saved.slug !== slug) {
setSlug(saved.slug);
setSlugTouched(true);
}
setOriginalSlug(saved?.slug ?? slug);
} catch (e) {
showAlertMsg(e instanceof ApiError ? `Error: ${e.message}` : 'Failed to connect to server.', 'error');
}
}
async function handleDelete() {
const target = originalSlug || slug;
if (!confirm(`Remove work "${target}" from the catalogue permanently?`)) return;
try {
await deletePost(target);
window.location.href = '/admin';
} catch {
showAlertMsg('Error deleting post.', 'error');
}
}
useEffect(() => {
if (!showAutocomplete) return;
const handler = () => setShowAutocomplete(false);
window.addEventListener('click', handler);
return () => window.removeEventListener('click', handler);
}, [showAutocomplete]);
return (
<>
{alert && (
<div className={`p-4 rounded-lg mb-6 text-sm font-semibold text-center backdrop-blur-sm shadow-lg ${
alert.type === 'success' ? 'bg-green/15 border border-green/30' : 'bg-red/15 border border-red/30'
}`} style={{ color: 'var(--text)' }}>
{alert.msg}
</div>
)}
{/* Actions bar */}
<div className="flex flex-wrap gap-4 mb-6">
{originalSlug && (
<button onClick={handleDelete} className="text-red hover:bg-red/10 px-6 py-3 rounded-lg transition-colors font-bold border border-red/20">
Delete
</button>
)}
<button onClick={handleSave} className="bg-mauve text-rosewater font-bold py-3 px-8 rounded-lg hover:bg-red transition-all transform hover:scale-105 whitespace-nowrap">
Save work
</button>
{originalSlug && (
<a
href={`/posts/${encodeURIComponent(originalSlug)}`}
target="_blank"
rel="noreferrer"
className="bg-blue text-crust font-bold py-3 px-8 rounded-lg hover:bg-sky transition-all transform hover:scale-105 whitespace-nowrap inline-flex items-center justify-center gap-2"
>
<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"/><polyline points="15 3 21 3 21 9"/><line x1="10" y1="14" x2="21" y2="3"/></svg>
View work
</a>
)}
</div>
<div className="space-y-6">
{/* Title + Date */}
<div className="grid grid-cols-1 md:grid-cols-[1fr_180px] gap-4">
<div>
<label className="field-label">Title</label>
<input
type="text"
value={title}
onChange={e => setTitle(e.target.value)}
required
placeholder="Untitled (charcoal on paper)"
className="field-input"
/>
</div>
<div>
<label className="field-label">Date</label>
<input
type="date"
value={date}
onChange={e => setDate(e.target.value)}
className="field-input font-mono"
/>
</div>
</div>
{/* Slug */}
<div>
<label className="field-label">
Slug <span className="normal-case tracking-normal text-[var(--overlay0)] italic font-display"> auto-derived from title</span>
</label>
<input
type="text"
value={slug}
onChange={e => { setSlug(e.target.value); setSlugTouched(true); }}
required
placeholder="untitled-charcoal-on-paper"
className="field-input font-mono"
/>
</div>
{/* Tags + Draft */}
<div className="grid grid-cols-1 md:grid-cols-[1fr_auto] gap-4 md:items-end">
<div>
<label className="field-label">Tags (comma-separated)</label>
<input
type="text"
value={tagsInput}
onChange={e => setTagsInput(e.target.value)}
placeholder="oil, paper, 2026, study"
className="field-input"
/>
</div>
<label className="flex items-center gap-2 px-4 py-3 bg-[var(--surface0)]/60 border border-[var(--surface2)] cursor-pointer hover:border-[var(--peach)] transition-colors select-none" style={{ borderRadius: 1 }}>
<input
type="checkbox"
checked={draft}
onChange={e => setDraft(e.target.checked)}
className="accent-[var(--peach)]"
/>
<span className="text-sm font-display italic text-[var(--subtext1)]">Sketch (draft)</span>
</label>
</div>
{/* Summary */}
<div>
<label className="field-label">Caption (optional)</label>
<textarea
value={summary}
onChange={e => setSummary(e.target.value)}
rows={2}
placeholder="A short caption for the catalogue index..."
className="field-input resize-none"
/>
</div>
{/* Editor Toolbar */}
<div className="flex flex-col md:flex-row justify-between items-start md:items-end gap-2">
<div className="flex items-center gap-3">
<label className="block text-sm font-medium text-subtext1 italic">Type '/' or '!' to insert an image · at least one image is required</label>
</div>
<div className="flex items-center gap-2">
<button
type="button"
onClick={() => setVimEnabled(v => !v)}
className={`text-xs px-3 py-1.5 rounded border transition-colors font-mono ${
vimEnabled
? 'bg-mauve/20 text-mauve border-mauve/30'
: 'bg-surface0 text-subtext0 border-surface1 hover:text-text'
}`}
title={vimEnabled ? 'Vim mode ON' : 'Vim mode OFF'}
>
{vimEnabled ? 'VIM' : 'vim'}
</button>
<button
type="button"
onClick={() => setShowPreview(p => !p)}
className={`text-xs px-3 py-1.5 rounded border transition-colors ${
showPreview
? 'bg-blue/20 text-blue border-blue/30'
: 'bg-surface0 text-subtext0 border-surface1 hover:text-text'
}`}
>
{showPreview ? 'Hide Preview' : 'Show Preview'}
</button>
<button
type="button"
onClick={() => setShowModal(true)}
className="text-sm bg-surface0 hover:bg-surface1 text-lavender px-4 py-1.5 rounded border border-surface1 transition-colors inline-flex items-center gap-2"
>
<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><rect width="18" height="18" x="3" y="3" rx="2" ry="2"/><circle cx="9" cy="9" r="2"/><path d="m21 15-3.086-3.086a2 2 0 0 0-2.828 0L6 21"/></svg>
Assets
</button>
</div>
</div>
{/* Mobile-only Edit | Preview tab bar */}
{showPreview && (
<div className="md:hidden flex gap-2" role="tablist" aria-label="Editor view">
<button
type="button"
role="tab"
aria-selected={mobileView === 'edit'}
onClick={() => setMobileView('edit')}
className={`flex-1 text-xs px-3 py-2 rounded border transition-colors ${
mobileView === 'edit'
? 'bg-blue/20 text-blue border-blue/30'
: 'bg-surface0 text-subtext0 border-surface1 hover:text-text'
}`}
>
Edit
</button>
<button
type="button"
role="tab"
aria-selected={mobileView === 'preview'}
onClick={() => setMobileView('preview')}
className={`flex-1 text-xs px-3 py-2 rounded border transition-colors ${
mobileView === 'preview'
? 'bg-blue/20 text-blue border-blue/30'
: 'bg-surface0 text-subtext0 border-surface1 hover:text-text'
}`}
>
Preview
</button>
</div>
)}
{/* Editor + Preview — desktop side-by-side, mobile single-pane via tabs */}
<div className={`relative ${showPreview ? 'md:grid md:grid-cols-2 md:gap-4 md:items-stretch' : ''}`}>
<div
className={`relative min-h-[500px] md:flex md:flex-col ${
showPreview && mobileView === 'preview' ? 'hidden' : ''
}`}
>
<div ref={editorRef} className="min-h-[500px] md:flex-1 md:min-h-0" />
{/* Autocomplete dropdown */}
{showAutocomplete && autocompleteAssets.length > 0 && (
<div
className="absolute z-50 bg-mantle border border-surface1 rounded-lg shadow-2xl max-h-64 overflow-y-auto w-80"
style={{ top: autocompletePos.top, left: autocompletePos.left }}
onClick={e => e.stopPropagation()}
>
<div className="p-2 text-[10px] text-subtext0 uppercase border-b border-white/5 bg-crust/50">Assets Library</div>
<ul className="py-1">
{autocompleteAssets.map(asset => {
const img = /\.(jpg|jpeg|png|webp|gif|svg)$/i.test(asset.name);
return (
<li
key={asset.name}
onClick={() => insertAssetMarkdown(asset)}
className="px-4 py-2 hover:bg-mauve/20 cursor-pointer text-sm truncate text-subtext1 hover:text-mauve flex items-center gap-3 transition-colors"
>
<div className="w-6 h-6 flex-shrink-0 bg-surface0 rounded flex items-center justify-center overflow-hidden">
{img ? (
<img src={asset.url} className="w-full h-full object-cover" alt="" />
) : (
<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M14.5 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V7.5L14.5 2z"/></svg>
)}
</div>
<span className="truncate">{asset.name}</span>
</li>
);
})}
</ul>
</div>
)}
</div>
{/* Live Preview — stretches to match editor height on desktop, full-pane via tabs on mobile */}
{showPreview && (
<div
className={`border border-surface1 rounded-xl bg-crust/50 overflow-y-auto flex-col md:flex md:min-h-0 ${
mobileView === 'preview' ? 'flex min-h-[60vh]' : 'hidden'
}`}
>
<div className="sticky top-0 bg-mantle px-4 py-2 text-xs text-subtext0 uppercase border-b border-surface1 z-10">
Preview
</div>
<div ref={previewRef} className="prose max-w-none p-4 md:p-6 flex-1" />
</div>
)}
</div>
</div>
{/* Asset Modal */}
{showModal && (
<div className="fixed inset-0 z-[100] bg-crust/80 backdrop-blur-sm flex items-center justify-center p-4 md:p-6">
<div className="glass w-full max-w-5xl max-h-[90vh] flex flex-col overflow-hidden">
<header className="p-4 md:p-6 border-b border-white/5 flex justify-between items-center bg-surface0/20">
<div>
<h2 className="text-xl md:text-2xl font-bold text-mauve">Asset Library</h2>
<p className="text-xs text-subtext0">Click 'Insert' to add an asset to your post.</p>
</div>
<button onClick={() => setShowModal(false)} className="p-2 text-subtext0 hover:text-red transition-colors">
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M18 6 6 18"/><path d="m6 6 12 12"/></svg>
</button>
</header>
<div className="p-4 md:p-6 overflow-y-auto flex-1 bg-bg/50">
<AssetManager mode="select" onSelect={handleAssetSelect} />
</div>
</div>
</div>
)}
</>
);
}