Files
LEDMatrix/web_interface/static/v3/js/widgets/json-file-manager.js
Chuck 7603909c59 feat(ui): add reusable json-file-manager widget (#352)
* feat(ui): add reusable json-file-manager widget for plugin file management

Introduces JsonFileManager — a zero-CDN, keyboard-accessible, configurable
widget for managing JSON data files from plugin configuration forms.

web_interface/static/v3/js/widgets/json-file-manager.js (new):
- Self-contained class with scoped CSS (no global leakage)
- File list with cards: enable/disable toggle, entry count, size, date
- Drag-and-drop + click-to-browse JSON upload
- Textarea-based JSON editor (no CDN); Format + Validate buttons
- Ctrl+S to save, Escape to close any open modal
- Create-new-file modal with configurable fields and validation
- Delete confirmation modal
- All actions (list/get/save/upload/delete/create/toggle) are configurable
  via x-widget-config in config_schema.json — no plugin-ID hardcoding

web_interface/static/v3/plugins_manager.js:
- New handler for x-widget: "json-file-manager" — renders mount div,
  instantiates JsonFileManager with x-widget-config and plugin ID

web_interface/templates/v3/base.html:
- Include json-file-manager.js (defer) before plugins_manager.js

Usage: set x-widget: "json-file-manager" + x-widget-config in any
plugin's config_schema.json (see ledmatrix-plugins of-the-day for a
complete example).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(json-file-manager): review fixes — type=button, finally, display_name, instance tracking

- Add type="button" to every button in the template (replace_all) so none
  default to submit inside the plugin-config-form
- Wrap _doSave/_doDelete/_doCreate fetch blocks in try/finally so _idle()
  always fires, not only on the error path
- _doCreate validation: skip the required-check for display_name (f.key
  !== 'display_name') and only validate pattern when val is non-empty, so
  the auto-derive logic at the end of the loop can run; simplify the
  derive block to a single conditional instead of nested DOM lookups
- plugins_manager.js: track instances in window.__jfmInstances[safeFieldId]
  and call _destroy() on any previous instance before mounting a new one,
  preventing duplicate keydown handlers when the config form is re-rendered

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(json-file-manager): use validity.patternMismatch; destroy all instances on remount

- Replace `new RegExp(f.pattern).test(val)` with `el.validity.patternMismatch`
  to avoid potential SyntaxError from untrusted pattern strings and rely on the
  browser's already-validated pattern attribute instead
- plugins_manager.js: iterate all window.__jfmInstances and call _destroy() on
  every entry before mounting, then reset the map, so no orphaned keydown
  handlers survive when any plugin config form is re-rendered

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(plugins_manager): scope jfm instance teardown to current mount key only

The global sweep (Object.values + window.__jfmInstances = {}) destroyed
sibling file-manager widgets when any one of them was remounted. Replace
with a targeted destroy of window.__jfmInstances[safeFieldId] only,
leaving all other entries untouched.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(json-file-manager): address Codacy security warnings

- Replace Math.random() with crypto.getRandomValues() for UID generation
- Remove unused variable `u` in _card()
- Guard this.actions property access with hasOwnProperty
- Replace btn.innerHTML in _busy/_idle with DOM manipulation + textContent

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Chuck <chuck@example.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-26 15:46:38 -04:00

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/**
* JsonFileManager — reusable JSON file management widget for LEDMatrix plugins.
*
* Usage via config_schema.json:
* "file_manager": {
* "type": "null",
* "title": "Data Files",
* "x-widget": "json-file-manager",
* "x-widget-config": {
* "actions": {
* "list": "list-files", // required
* "get": "get-file", // required for editing
* "save": "save-file", // required for editing
* "upload": "upload-file", // optional
* "delete": "delete-file", // optional
* "create": "create-file", // optional
* "toggle": "toggle-category" // optional
* },
* "upload_hint": "Hint text under the drop zone",
* "directory_label": "of_the_day/",
* "create_fields": [
* { "key": "category_name", "label": "Category Name",
* "placeholder": "my_words", "pattern": "^[a-z0-9_]+$",
* "hint": "Used as filename" },
* { "key": "display_name", "label": "Display Name",
* "placeholder": "My Words" }
* ],
* "toggle_key": "category_name"
* }
* }
*
* No CDN dependencies. Works on all modern browsers.
*/
(function () {
'use strict';
class JsonFileManager {
constructor(container, config, pluginId) {
// Prevent duplicate instances on the same container
if (container._jfmInstance) {
container._jfmInstance._destroy();
}
container._jfmInstance = this;
this.el = container;
this.pluginId = pluginId;
this.actions = config.actions || {};
this.uploadHint = config.upload_hint || '';
this.dirLabel = config.directory_label || '';
this.createFields = config.create_fields || [];
this.toggleKey = config.toggle_key || null;
// Unique prefix for all DOM IDs in this instance
this._uid = 'jfm_' + Array.from(crypto.getRandomValues(new Uint8Array(4)), b => b.toString(16).padStart(2, '0')).join('');
// Mutable state
this._editFile = null;
this._deleteFile = null;
this._keyHandler = this._onKey.bind(this);
this._inject();
this._bind();
this._loadList();
}
// ── Lifecycle ────────────────────────────────────────────────────────
_destroy() {
document.removeEventListener('keydown', this._keyHandler);
this.el._jfmInstance = null;
}
// ── DOM Injection ────────────────────────────────────────────────────
_inject() {
const u = this._uid;
const hasUpload = !!this.actions.upload;
const hasCreate = !!this.actions.create;
const hasDelete = !!this.actions.delete;
this.el.innerHTML = this._css(u) + `
<div id="${u}" class="jfm">
<div class="jfm-header">
<div class="jfm-header-left">
<span class="jfm-title">Data Files</span>
${this.dirLabel ? `<code class="jfm-dir">${this._esc(this.dirLabel)}</code>` : ''}
</div>
<div class="jfm-header-right">
${hasCreate ? `<button type="button" class="jfm-btn jfm-btn-primary jfm-btn-sm" data-jfm="open-create">+ New File</button>` : ''}
<button type="button" class="jfm-btn jfm-btn-ghost jfm-btn-sm" data-jfm="refresh" title="Refresh file list">&#8635;</button>
</div>
</div>
<div id="${u}-list" class="jfm-list">
<div class="jfm-loading"><span class="jfm-spin"></span> Loading…</div>
</div>
${hasUpload ? `
<div class="jfm-upload-wrap">
<input type="file" accept=".json" id="${u}-fileinput" tabindex="-1">
<div class="jfm-dropzone" id="${u}-dropzone" data-jfm="open-picker" role="button" tabindex="0"
aria-label="Upload JSON file">
<span class="jfm-drop-icon">&#128193;</span>
<p class="jfm-drop-primary">Drop a JSON file here, or click to browse</p>
${this.uploadHint ? `<p class="jfm-drop-hint">${this._esc(this.uploadHint)}</p>` : ''}
</div>
</div>` : ''}
<!-- ── Edit modal ─────────────────────────────────────── -->
<div class="jfm-modal" id="${u}-edit-modal" role="dialog" aria-modal="true" hidden>
<div class="jfm-modal-box jfm-modal-wide">
<div class="jfm-modal-head">
<span id="${u}-edit-title" class="jfm-modal-title">Edit file</span>
<div class="jfm-modal-tools">
<button type="button" class="jfm-btn jfm-btn-ghost jfm-btn-sm" data-jfm="fmt">Format</button>
<button type="button" class="jfm-btn jfm-btn-ghost jfm-btn-sm" data-jfm="validate">Validate</button>
<button type="button" class="jfm-close-btn" data-jfm="close-edit" aria-label="Close">&times;</button>
</div>
</div>
<div id="${u}-edit-err" class="jfm-err-bar" hidden></div>
<textarea id="${u}-editor" class="jfm-editor"
spellcheck="false" autocomplete="off"
autocorrect="off" autocapitalize="off"
aria-label="JSON editor"></textarea>
<div class="jfm-modal-foot">
<span id="${u}-charcount" class="jfm-stat"></span>
<button type="button" class="jfm-btn jfm-btn-ghost" data-jfm="close-edit">Cancel</button>
<button type="button" class="jfm-btn jfm-btn-primary" data-jfm="save" id="${u}-save-btn">Save</button>
</div>
</div>
</div>
<!-- ── Delete modal ───────────────────────────────────── -->
${hasDelete ? `
<div class="jfm-modal" id="${u}-del-modal" role="dialog" aria-modal="true" hidden>
<div class="jfm-modal-box">
<div class="jfm-modal-head">
<span class="jfm-modal-title">Delete file</span>
<button type="button" class="jfm-close-btn" data-jfm="close-del" aria-label="Close">&times;</button>
</div>
<div class="jfm-modal-body">
<p>Delete <strong id="${u}-del-name"></strong>?</p>
<p class="jfm-muted">This permanently removes the file and its entry from the plugin configuration.</p>
</div>
<div class="jfm-modal-foot">
<button type="button" class="jfm-btn jfm-btn-ghost" data-jfm="close-del">Cancel</button>
<button type="button" class="jfm-btn jfm-btn-danger" data-jfm="confirm-del" id="${u}-del-btn">Delete</button>
</div>
</div>
</div>` : ''}
<!-- ── Create modal ───────────────────────────────────── -->
${hasCreate ? `
<div class="jfm-modal" id="${u}-create-modal" role="dialog" aria-modal="true" hidden>
<div class="jfm-modal-box">
<div class="jfm-modal-head">
<span class="jfm-modal-title">Create new file</span>
<button type="button" class="jfm-close-btn" data-jfm="close-create" aria-label="Close">&times;</button>
</div>
<div class="jfm-modal-body">
${this.createFields.map(f => `
<div class="jfm-field">
<label for="${u}-cf-${this._esc(f.key)}">${this._esc(f.label)}</label>
<input type="text" id="${u}-cf-${this._esc(f.key)}"
placeholder="${this._esc(f.placeholder || '')}"
${f.pattern ? `pattern="${this._esc(f.pattern)}"` : ''}>
${f.hint ? `<span class="jfm-hint">${this._esc(f.hint)}</span>` : ''}
</div>`).join('')}
</div>
<div class="jfm-modal-foot">
<button type="button" class="jfm-btn jfm-btn-ghost" data-jfm="close-create">Cancel</button>
<button type="button" class="jfm-btn jfm-btn-primary" data-jfm="do-create" id="${u}-create-btn">Create</button>
</div>
</div>
</div>` : ''}
</div>`; // end #${u}
// Cache frequently-used elements
this._root = document.getElementById(u);
this._listEl = document.getElementById(`${u}-list`);
this._editorEl = document.getElementById(`${u}-editor`);
this._editModal = document.getElementById(`${u}-edit-modal`);
this._delModal = document.getElementById(`${u}-del-modal`);
this._createModal = document.getElementById(`${u}-create-modal`);
this._dropzone = document.getElementById(`${u}-dropzone`);
this._fileInput = document.getElementById(`${u}-fileinput`);
}
_css(u) {
return `<style>
#${u}{font-family:inherit;color:#111827;}
#${u} *{box-sizing:border-box;}
/* Header */
#${u} .jfm-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.875rem;gap:.5rem;}
#${u} .jfm-header-left{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;}
#${u} .jfm-title{font-size:.9375rem;font-weight:600;color:#111827;}
#${u} .jfm-dir{font-size:.75rem;color:#6b7280;background:#f3f4f6;padding:.125rem .375rem;border-radius:.25rem;font-family:monospace;}
#${u} .jfm-header-right{display:flex;gap:.375rem;align-items:center;flex-shrink:0;}
/* Buttons */
#${u} .jfm-btn{display:inline-flex;align-items:center;gap:.25rem;padding:.4375rem .875rem;border-radius:.375rem;border:1px solid #d1d5db;background:#fff;color:#374151;font-size:.875rem;font-weight:500;cursor:pointer;transition:background .12s,border-color .12s,opacity .12s;line-height:1.25;}
#${u} .jfm-btn:hover:not(:disabled){background:#f9fafb;border-color:#9ca3af;}
#${u} .jfm-btn:focus-visible{outline:2px solid #3b82f6;outline-offset:1px;}
#${u} .jfm-btn:disabled{opacity:.5;cursor:not-allowed;}
#${u} .jfm-btn-sm{padding:.3125rem .625rem;font-size:.8125rem;}
#${u} .jfm-btn-primary{background:#3b82f6;border-color:#3b82f6;color:#fff;}
#${u} .jfm-btn-primary:hover:not(:disabled){background:#2563eb;border-color:#2563eb;}
#${u} .jfm-btn-danger{background:#ef4444;border-color:#ef4444;color:#fff;}
#${u} .jfm-btn-danger:hover:not(:disabled){background:#dc2626;border-color:#dc2626;}
#${u} .jfm-btn-ghost{background:transparent;border-color:transparent;color:#6b7280;}
#${u} .jfm-btn-ghost:hover:not(:disabled){background:#f3f4f6;color:#374151;}
#${u} .jfm-close-btn{display:flex;align-items:center;justify-content:center;width:2rem;height:2rem;border:none;background:none;color:#9ca3af;font-size:1.25rem;cursor:pointer;border-radius:.25rem;padding:0;line-height:1;}
#${u} .jfm-close-btn:hover{background:#f3f4f6;color:#374151;}
/* File list */
#${u} .jfm-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:.625rem;margin-bottom:1rem;min-height:5rem;}
#${u} .jfm-loading{grid-column:1/-1;display:flex;align-items:center;justify-content:center;gap:.5rem;padding:2rem;color:#6b7280;font-size:.875rem;}
#${u} .jfm-empty{grid-column:1/-1;text-align:center;padding:2.5rem 1rem;color:#9ca3af;}
#${u} .jfm-empty-icon{font-size:2.25rem;margin-bottom:.625rem;}
#${u} .jfm-empty-title{font-weight:600;color:#374151;margin:0 0 .25rem;}
#${u} .jfm-empty-sub{font-size:.875rem;margin:0;}
/* File cards */
#${u} .jfm-card{border:1px solid #e5e7eb;border-radius:.5rem;padding:.875rem;background:#fff;display:flex;flex-direction:column;gap:.5rem;transition:border-color .15s,box-shadow .15s;}
#${u} .jfm-card:hover{border-color:#93c5fd;box-shadow:0 2px 8px rgba(59,130,246,.1);}
#${u} .jfm-card.jfm-off{opacity:.6;}
#${u} .jfm-card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:.5rem;}
#${u} .jfm-card-name{font-weight:600;font-size:.9375rem;word-break:break-word;color:#111827;flex:1;}
#${u} .jfm-card-meta{font-size:.75rem;color:#6b7280;display:flex;flex-direction:column;gap:.125rem;line-height:1.5;}
#${u} .jfm-card-actions{display:flex;gap:.375rem;padding-top:.5rem;border-top:1px solid #f3f4f6;margin-top:.125rem;}
#${u} .jfm-card-actions .jfm-btn{flex:1;justify-content:center;}
#${u} .jfm-card-actions .jfm-del{flex:0 0 auto;}
/* Toggle */
#${u} .jfm-toggle{display:flex;align-items:center;gap:.3125rem;font-size:.75rem;color:#6b7280;white-space:nowrap;flex-shrink:0;}
#${u} .jfm-toggle input[type=checkbox]{width:.9375rem;height:.9375rem;cursor:pointer;accent-color:#22c55e;margin:0;}
/* Upload zone */
#${u} .jfm-upload-wrap{margin-top:.25rem;}
#${u} input[type=file]#${u}-fileinput{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;}
#${u} .jfm-dropzone{border:2px dashed #d1d5db;border-radius:.5rem;padding:1.25rem 1rem;text-align:center;cursor:pointer;transition:border-color .15s,background .15s;background:#f9fafb;user-select:none;}
#${u} .jfm-dropzone:hover,#${u} .jfm-dropzone:focus-visible,#${u} .jfm-dropzone.jfm-over{border-color:#3b82f6;background:#eff6ff;border-style:solid;outline:none;}
#${u} .jfm-drop-icon{font-size:1.75rem;display:block;margin-bottom:.375rem;}
#${u} .jfm-drop-primary{font-size:.875rem;color:#374151;margin:0 0 .25rem;}
#${u} .jfm-drop-hint{font-size:.75rem;color:#9ca3af;margin:0;}
/* Modals */
#${u} .jfm-modal{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:9999;display:flex;align-items:center;justify-content:center;padding:1rem;backdrop-filter:blur(1px);}
#${u} .jfm-modal[hidden]{display:none;}
#${u} .jfm-modal-box{background:#fff;border-radius:.5rem;box-shadow:0 20px 40px rgba(0,0,0,.15);display:flex;flex-direction:column;width:100%;max-width:440px;max-height:92vh;}
#${u} .jfm-modal-wide{max-width:880px;}
#${u} .jfm-modal-head{display:flex;justify-content:space-between;align-items:center;padding:.875rem 1.125rem;border-bottom:1px solid #e5e7eb;flex-shrink:0;gap:.5rem;}
#${u} .jfm-modal-title{font-weight:600;font-size:.9375rem;color:#111827;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
#${u} .jfm-modal-tools{display:flex;gap:.25rem;align-items:center;flex-shrink:0;}
#${u} .jfm-modal-body{padding:1.125rem;overflow-y:auto;flex:1;}
#${u} .jfm-modal-foot{display:flex;gap:.5rem;justify-content:flex-end;align-items:center;padding:.75rem 1.125rem;border-top:1px solid #e5e7eb;flex-shrink:0;background:#f9fafb;border-radius:0 0 .5rem .5rem;}
#${u} .jfm-stat{margin-right:auto;font-size:.75rem;color:#9ca3af;font-variant-numeric:tabular-nums;}
/* JSON editor */
#${u} .jfm-editor{display:block;width:100%;min-height:400px;height:58vh;max-height:64vh;resize:vertical;font-family:'Courier New',Consolas,ui-monospace,monospace;font-size:.8rem;line-height:1.55;padding:.75rem 1rem;border:none;border-radius:0;outline:none;white-space:pre;overflow:auto;color:#1e293b;background:#fafafa;tab-size:2;}
#${u} .jfm-err-bar{background:#fef2f2;border-bottom:1px solid #fecaca;color:#991b1b;font-size:.8125rem;padding:.5rem 1.125rem;flex-shrink:0;line-height:1.4;}
#${u} .jfm-err-bar[hidden]{display:none;}
/* Create form */
#${u} .jfm-field{margin-bottom:.875rem;}
#${u} .jfm-field:last-child{margin-bottom:0;}
#${u} .jfm-field label{display:block;font-size:.875rem;font-weight:500;color:#374151;margin-bottom:.3125rem;}
#${u} .jfm-field input{width:100%;padding:.4375rem .75rem;border:1px solid #d1d5db;border-radius:.375rem;font-size:.875rem;color:#111827;background:#fff;}
#${u} .jfm-field input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px rgba(59,130,246,.12);}
#${u} .jfm-hint{display:block;font-size:.75rem;color:#9ca3af;margin-top:.25rem;}
#${u} .jfm-muted{font-size:.875rem;color:#6b7280;margin-top:.375rem;}
/* Spinner */
#${u} .jfm-spin{display:inline-block;width:.9rem;height:.9rem;border:2px solid #e5e7eb;border-top-color:#3b82f6;border-radius:50%;animation:jfm-spin-${u} .6s linear infinite;vertical-align:middle;}
@keyframes jfm-spin-${u}{to{transform:rotate(360deg);}}
</style>`;
}
// ── Event Binding ────────────────────────────────────────────────────
_bind() {
// Delegated clicks on the widget root
this._root.addEventListener('click', this._onClick.bind(this));
this._root.addEventListener('change', this._onChange.bind(this));
// Drag-and-drop on the dropzone
if (this._dropzone) {
this._dropzone.addEventListener('dragover', e => {
e.preventDefault();
this._dropzone.classList.add('jfm-over');
});
this._dropzone.addEventListener('dragleave', () => {
this._dropzone.classList.remove('jfm-over');
});
this._dropzone.addEventListener('drop', e => {
e.preventDefault();
this._dropzone.classList.remove('jfm-over');
const file = e.dataTransfer?.files[0];
if (file) this._uploadFile(file);
});
// Keyboard activation of drop zone
this._dropzone.addEventListener('keydown', e => {
if (e.key === 'Enter' || e.key === ' ') {
e.preventDefault();
this._fileInput?.click();
}
});
}
// Modal backdrop clicks
[this._editModal, this._delModal, this._createModal].forEach(m => {
if (m) m.addEventListener('click', e => { if (e.target === m) this._closeAll(); });
});
// Editor: char count + Tab indent
if (this._editorEl) {
this._editorEl.addEventListener('input', () => this._updateStat());
this._editorEl.addEventListener('keydown', e => {
if (e.key === 'Tab') {
e.preventDefault();
const s = this._editorEl.selectionStart;
const end = this._editorEl.selectionEnd;
const v = this._editorEl.value;
this._editorEl.value = v.slice(0, s) + ' ' + v.slice(end);
this._editorEl.selectionStart = this._editorEl.selectionEnd = s + 2;
this._updateStat();
}
});
}
// Global keyboard shortcuts
document.addEventListener('keydown', this._keyHandler);
}
_onKey(e) {
const editOpen = this._editModal && !this._editModal.hidden;
const delOpen = this._delModal && !this._delModal.hidden;
const createOpen = this._createModal && !this._createModal.hidden;
if (e.key === 'Escape') {
if (editOpen) { this._closeEdit(); return; }
if (delOpen) { this._closeDel(); return; }
if (createOpen) { this._closeCreate(); return; }
}
if ((e.ctrlKey || e.metaKey) && e.key === 's' && editOpen) {
e.preventDefault();
this._doSave();
}
}
_onClick(e) {
const btn = e.target.closest('[data-jfm]');
if (!btn) return;
const action = btn.dataset.jfm;
switch (action) {
case 'refresh': this._loadList(); break;
case 'open-picker': this._fileInput?.click(); break;
case 'open-create': this._openCreate(); break;
case 'close-edit': this._closeEdit(); break;
case 'close-del': this._closeDel(); break;
case 'close-create': this._closeCreate(); break;
case 'fmt': this._formatJson(); break;
case 'validate': this._validateJson(); break;
case 'save': this._doSave(); break;
case 'confirm-del': this._doDelete(); break;
case 'do-create': this._doCreate(); break;
case 'edit-file': {
const card = btn.closest('[data-jfm-file]');
if (card) this._openEdit(card.dataset.jfmFile);
break;
}
case 'del-file': {
const card = btn.closest('[data-jfm-file]');
if (card) this._openDel(card.dataset.jfmFile);
break;
}
}
}
_onChange(e) {
// Toggle checkbox
if (e.target.classList.contains('jfm-toggle-cb')) {
const catName = e.target.dataset.cat;
const enabled = e.target.checked;
this._doToggle(catName, enabled, e.target);
}
// File input
if (e.target === this._fileInput) {
const file = e.target.files?.[0];
if (file) this._uploadFile(file);
e.target.value = '';
}
}
// ── API helper ───────────────────────────────────────────────────────
async _api(actionKey, params) {
const actionId = Object.prototype.hasOwnProperty.call(this.actions, actionKey) ? this.actions[actionKey] : undefined;
if (!actionId) throw new Error(`Action "${actionKey}" not configured`);
const body = { plugin_id: this.pluginId, action_id: actionId };
if (params !== undefined) body.params = params;
const r = await fetch('/api/v3/plugins/action', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(body)
});
if (!r.ok) throw new Error('Server error ' + r.status);
const ct = r.headers.get('content-type') || '';
if (!ct.includes('application/json')) {
const txt = await r.text();
throw new Error('Unexpected response: ' + txt.slice(0, 120));
}
return r.json();
}
// ── File List ────────────────────────────────────────────────────────
async _loadList() {
this._listEl.innerHTML = `<div class="jfm-loading"><span class="jfm-spin"></span> Loading…</div>`;
try {
const data = await this._api('list');
if (data.status !== 'success') throw new Error(data.message || 'Load failed');
this._renderList(data.files || []);
} catch (err) {
this._listEl.innerHTML = `
<div class="jfm-empty">
<div class="jfm-empty-icon">&#9888;</div>
<p class="jfm-empty-title">Failed to load files</p>
<p class="jfm-empty-sub">${this._esc(err.message)}</p>
</div>`;
}
}
_renderList(files) {
if (!files.length) {
this._listEl.innerHTML = `
<div class="jfm-empty">
<div class="jfm-empty-icon">&#128193;</div>
<p class="jfm-empty-title">No files yet</p>
<p class="jfm-empty-sub">Upload or create a JSON file to get started</p>
</div>`;
return;
}
this._listEl.innerHTML = files.map(f => this._card(f)).join('');
}
_card(f) {
const enabled = f.enabled !== false;
const displayName = this._esc(f.display_name || f.filename);
const filename = this._esc(f.filename);
const catName = this.toggleKey ? this._esc(f[this.toggleKey] || '') : '';
const showToggle = !!(this.actions.toggle && this.toggleKey && f[this.toggleKey]);
const hasEdit = !!this.actions.get && !!this.actions.save;
const hasDelete = !!this.actions.delete;
return `
<div class="jfm-card${enabled ? '' : ' jfm-off'}" data-jfm-file="${filename}">
<div class="jfm-card-top">
<span class="jfm-card-name" title="${filename}">${displayName}</span>
${showToggle ? `
<label class="jfm-toggle" title="${enabled ? 'Enabled — click to disable' : 'Disabled — click to enable'}">
<input type="checkbox" class="jfm-toggle-cb" data-cat="${catName}" ${enabled ? 'checked' : ''}>
<span>${enabled ? 'On' : 'Off'}</span>
</label>` : ''}
</div>
<div class="jfm-card-meta">
<span>&#128196; ${filename}</span>
<span>&#128202; ${f.entry_count ?? 0} entries &middot; ${this._fmtSize(f.size || 0)}</span>
<span>&#128337; ${this._fmtDate(f.modified)}</span>
</div>
<div class="jfm-card-actions">
${hasEdit ? `<button type="button" class="jfm-btn jfm-btn-sm" data-jfm="edit-file">&#9998; Edit</button>` : ''}
${hasDelete ? `<button type="button" class="jfm-btn jfm-btn-danger jfm-btn-sm jfm-del" data-jfm="del-file" title="Delete file">&#128465;</button>` : ''}
</div>
</div>`;
}
// ── Edit flow ────────────────────────────────────────────────────────
async _openEdit(filename) {
this._editFile = filename;
document.getElementById(`${this._uid}-edit-title`).textContent = `Edit: ${filename}`;
this._clearErr();
this._editorEl.value = 'Loading…';
this._updateStat();
this._editModal.hidden = false;
try {
const data = await this._api('get', { filename });
if (data.status !== 'success') throw new Error(data.message || 'Load failed');
this._editorEl.value = JSON.stringify(data.content, null, 2);
this._updateStat();
this._editorEl.focus();
this._editorEl.setSelectionRange(0, 0);
this._editorEl.scrollTop = 0;
} catch (err) {
this._showErr('Failed to load file: ' + err.message);
this._editorEl.value = '';
}
}
_closeEdit() {
if (this._editModal) this._editModal.hidden = true;
this._editFile = null;
this._clearErr();
}
_formatJson() {
try {
const parsed = JSON.parse(this._editorEl.value);
this._editorEl.value = JSON.stringify(parsed, null, 2);
this._updateStat();
this._clearErr();
} catch (err) {
this._showErr('Invalid JSON — ' + err.message);
}
}
_validateJson() {
try {
const parsed = JSON.parse(this._editorEl.value);
const n = (typeof parsed === 'object' && parsed !== null) ? Object.keys(parsed).length : '?';
this._clearErr();
this._notify(`Valid JSON — ${n} top-level keys`, 'success');
} catch (err) {
this._showErr('Invalid JSON — ' + err.message);
}
}
async _doSave() {
if (!this._editFile) return;
let contentStr;
try {
const parsed = JSON.parse(this._editorEl.value);
contentStr = JSON.stringify(parsed, null, 2);
} catch (err) {
this._showErr('Cannot save — fix JSON first: ' + err.message);
return;
}
const btn = document.getElementById(`${this._uid}-save-btn`);
this._busy(btn, 'Saving…');
try {
const data = await this._api('save', { filename: this._editFile, content: contentStr });
if (data.status !== 'success') throw new Error(data.message || 'Save failed');
this._notify('File saved', 'success');
this._closeEdit();
this._loadList();
} catch (err) {
this._showErr('Save failed: ' + err.message);
} finally {
this._idle(btn, 'Save');
}
}
// ── Delete flow ──────────────────────────────────────────────────────
_openDel(filename) {
this._deleteFile = filename;
const el = document.getElementById(`${this._uid}-del-name`);
if (el) el.textContent = filename;
if (this._delModal) this._delModal.hidden = false;
}
_closeDel() {
if (this._delModal) this._delModal.hidden = true;
this._deleteFile = null;
}
async _doDelete() {
if (!this._deleteFile) return;
const btn = document.getElementById(`${this._uid}-del-btn`);
this._busy(btn, 'Deleting…');
try {
const data = await this._api('delete', { filename: this._deleteFile });
if (data.status !== 'success') throw new Error(data.message || 'Delete failed');
this._notify('File deleted', 'success');
this._closeDel();
this._loadList();
} catch (err) {
this._notify('Delete failed: ' + err.message, 'error');
} finally {
this._idle(btn, 'Delete');
}
}
// ── Create flow ──────────────────────────────────────────────────────
_openCreate() {
if (!this._createModal) return;
this.createFields.forEach(f => {
const el = document.getElementById(`${this._uid}-cf-${f.key}`);
if (el) el.value = '';
});
this._createModal.hidden = false;
const first = this.createFields[0];
if (first) document.getElementById(`${this._uid}-cf-${first.key}`)?.focus();
}
_closeCreate() {
if (this._createModal) this._createModal.hidden = true;
}
async _doCreate() {
const params = {};
for (const f of this.createFields) {
const el = document.getElementById(`${this._uid}-cf-${f.key}`);
const val = (el?.value || '').trim();
// display_name may be blank — auto-derived from category_name below
if (!val && f.key !== 'display_name') {
this._notify(`"${f.label}" is required`, 'error');
el?.focus();
return;
}
if (f.pattern && val && el && el.validity.patternMismatch) {
this._notify(`"${f.label}" format is invalid`, 'error');
el?.focus();
return;
}
if (val) params[f.key] = val;
}
// Auto-derive display_name from category_name when left blank
if (!params.display_name && params.category_name) {
params.display_name = params.category_name.replace(/_/g, ' ').replace(/\b\w/g, c => c.toUpperCase());
}
const btn = document.getElementById(`${this._uid}-create-btn`);
this._busy(btn, 'Creating…');
try {
const data = await this._api('create', params);
if (data.status !== 'success') throw new Error(data.message || 'Create failed');
this._notify('File created', 'success');
this._closeCreate();
this._loadList();
} catch (err) {
this._notify('Create failed: ' + err.message, 'error');
} finally {
this._idle(btn, 'Create');
}
}
// ── Upload ───────────────────────────────────────────────────────────
async _uploadFile(file) {
if (!file.name.endsWith('.json')) {
this._notify('Please select a .json file', 'error');
return;
}
let content;
try {
content = await file.text();
JSON.parse(content); // client-side validation
} catch (err) {
this._notify('Invalid JSON: ' + err.message, 'error');
return;
}
if (this._dropzone) this._dropzone.style.opacity = '.5';
try {
const data = await this._api('upload', { filename: file.name, content });
if (data.status !== 'success') throw new Error(data.message || 'Upload failed');
this._notify(`"${file.name}" uploaded`, 'success');
this._loadList();
} catch (err) {
this._notify('Upload failed: ' + err.message, 'error');
} finally {
if (this._dropzone) this._dropzone.style.opacity = '';
}
}
// ── Toggle ───────────────────────────────────────────────────────────
async _doToggle(catName, enabled, checkbox) {
checkbox.disabled = true;
try {
const params = { enabled };
if (this.toggleKey) params[this.toggleKey] = catName;
const data = await this._api('toggle', params);
if (data.status !== 'success') throw new Error(data.message || 'Toggle failed');
this._notify(enabled ? 'Category enabled' : 'Category disabled', 'success');
this._loadList();
} catch (err) {
this._notify('Toggle failed: ' + err.message, 'error');
checkbox.checked = !enabled; // revert
checkbox.disabled = false;
}
}
// ── Helpers ──────────────────────────────────────────────────────────
_closeAll() {
this._closeEdit();
this._closeDel();
this._closeCreate();
}
_updateStat() {
const v = this._editorEl?.value || '';
const lines = v ? v.split('\n').length : 0;
const el = document.getElementById(`${this._uid}-charcount`);
if (el) el.textContent = `${lines.toLocaleString()} lines · ${v.length.toLocaleString()} chars`;
}
_showErr(msg) {
const el = document.getElementById(`${this._uid}-edit-err`);
if (el) { el.textContent = msg; el.hidden = false; }
}
_clearErr() {
const el = document.getElementById(`${this._uid}-edit-err`);
if (el) { el.textContent = ''; el.hidden = true; }
}
_notify(msg, type) {
if (typeof window.showNotification === 'function') {
window.showNotification(msg, type || 'info');
} else {
console.info(`[JsonFileManager] ${type || 'info'}: ${msg}`);
}
}
_busy(btn, label) {
if (!btn) return;
btn._jfmOrigText = btn.textContent;
btn.disabled = true;
btn.textContent = '';
const spin = document.createElement('span');
spin.className = 'jfm-spin';
btn.appendChild(spin);
btn.appendChild(document.createTextNode(' ' + label));
}
_idle(btn, label) {
if (!btn) return;
btn.disabled = false;
btn.textContent = btn._jfmOrigText !== undefined ? btn._jfmOrigText : label;
delete btn._jfmOrigText;
}
_esc(str) {
const d = document.createElement('div');
d.textContent = String(str ?? '');
return d.innerHTML;
}
_fmtSize(bytes) {
if (!bytes) return '0 B';
const i = Math.min(Math.floor(Math.log2(bytes + 1) / 10), 2);
const unit = ['B', 'KB', 'MB'][i];
const val = bytes / Math.pow(1024, i);
return (i ? val.toFixed(1) : val) + ' ' + unit;
}
_fmtDate(str) {
if (!str) return '—';
try {
return new Date(str).toLocaleDateString(undefined, {
month: 'short', day: 'numeric', year: 'numeric'
});
} catch { return str; }
}
}
// ── Widget registry integration ──────────────────────────────────────────
window.JsonFileManager = JsonFileManager;
if (typeof window.LEDMatrixWidgets !== 'undefined') {
window.LEDMatrixWidgets.register('json-file-manager', {
name: 'JSON File Manager',
version: '1.0.0',
render(container, config, _value, options) {
new JsonFileManager(container, config || {}, options?.pluginId || '');
},
getValue() { return null; },
setValue() {}
});
console.log('[JsonFileManager] Registered with LEDMatrixWidgets');
} else {
console.log('[JsonFileManager] Loaded (LEDMatrixWidgets registry not available)');
}
})();