calc/index.html at master · MetavalAI/calc · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Metaval Engineering Calculator</title>
<link rel="shortcut icon" href="static/images/favicon.ico">
<link rel="stylesheet" href="static/css/style.css">
</head>
<body>

<!-- NAVBAR -->
<nav class="top-navbar">
  <div class="nav-left">
    <span class="brand-dot"></span>
    <span class="brand-name">METAVAL</span>
    <span class="divider">|</span>
    <span class="app-name">ENGINEERING CALCULATOR</span>
  </div>
  <div class="nav-right">
    <button class="nav-btn" onclick="openFormulaManager()">Formula Library</button>
    <button class="nav-btn primary" onclick="openCreateDialog()">+ Create Formula</button>
  </div>
</nav>

<!-- MAIN CONTENT -->
<div class="container">
  <div class="toolbar">
    <div class="toolbar-left">
      <span class="toolbar-label">Add Calculator:</span>
      <select id="formulaDropdown" class="formula-dropdown">
        <option value="">— Select a formula —</option>

      </select>
      <button class="btn-add" onclick="MetaEngine.addPanel()">+ Open</button>
    </div>
    <div class="toolbar-right">
    </div>
  </div>

  <div class="empty-state" id="emptyState">
    <div class="empty-icon">⚙️</div>
    <div class="empty-title">Select a Calculator</div>
    <div class="empty-sub">
      Choose from built-in formulas or upload your own JSON via <strong>+ Create Formula</strong>.<br>
    </div>
  </div>
  <div class="panels-grid" id="panelsGrid"></div>
</div>

<footer class="footer">
  <div class="footer-top">
    <div class="footer-col">
      <div class="footer-logo">METAVAL</div>
      <div class="footer-tagline">THINKING OUTSIDE THE BOX WITHOUT LIMITATIONS</div>
    </div>
    <div class="footer-col">
      <div class="footer-heading">Address</div>
      <div class="footer-text">169-170, Badkhal Pali Road, Bhankri,<br>Faridabad, Haryana 121004, India</div>
    </div>
    <div class="footer-col">
      <div class="footer-heading">Phone</div>
      <div class="footer-text">+91 99589 35512</div>
      <div class="footer-heading" style="margin-top:10px">Email</div>
      <div class="footer-text"><a href="mailto:info.ind@metaval.com" class="footer-link">info.ind@metaval.com</a></div>
    </div>
    <div class="footer-col">
      <div class="footer-heading">Product Divisions</div>
      <div class="footer-text">Valves, Manifold & Strainers<br>Flow Measurement<br>Level<br>Temperature<br>Pressure</div>
    </div>
  </div>
  <div class="footer-bottom">
    <span>©2025 Metaval Engineering Pvt Ltd. All rights reserved.</span>
    <a href="https://metaval.com" class="footer-link" target="_blank">metaval.com</a>
  </div>
</footer>

<!--FORMULA MANAGER MODAL -->
<div class="modal-overlay" id="fmOverlay" style="display:none" onclick="closeFmOverlay(event)">
  <div class="big-modal">
    <div class="bm-header">
      <div class="bm-title">Formula Library</div>
      <button class="panel-close" onclick="closeFormulaManager()">✕</button>
    </div>
    <div class="bm-toolbar">
      <input class="bm-search" id="fmSearch" placeholder="Search formulas…" oninput="renderFmList()">
      <button class="btn-add" onclick="openCreateDialog()">+ Upload / Create</button>
    </div>
    <div class="bm-list" id="fmList">
      <div class="bm-empty">Loading…</div>
    </div>
  </div>
</div>

<!-- READ / EDIT FORMULA MODAL -->
<div class="modal-overlay" id="feOverlay" style="display:none" onclick="closeFeOverlay(event)">
  <div class="big-modal wide-modal">
    <div class="bm-header">
      <div class="bm-title" id="feTitle">Formula</div>
      <div style="display:flex;gap:8px;align-items:center">
        <button class="icon-btn" id="feEditBtn" onclick="toggleFeEdit()">Edit</button>
        <button class="icon-btn danger" id="feDeleteBtn" onclick="deleteCurrentFormula()">Delete</button>
        <button class="panel-close" onclick="closeFeModal()">✕</button>
      </div>
    </div>

    <!-- READ MODE -->
    <div id="feReadMode" class="fe-read"></div>

    <!-- EDIT MODE -->
    <div id="feEditMode" style="display:none" class="fe-edit">
      <div class="fe-edit-label">Edit JSON directly:</div>
      <textarea id="feEditArea" class="fe-textarea" spellcheck="false"></textarea>
      <div class="fe-edit-actions">
        <span class="fe-edit-hint">⚠ Edit carefully — valid JSON required</span>
        <button class="btn-secondary" onclick="cancelFeEdit()">Cancel</button>
        <button class="btn-primary" onclick="saveFeEdit()">Save Changes</button>
      </div>
    </div>
  </div>
</div>

<!-- CREATE / UPLOAD DIALOG -->
<div class="modal-overlay" id="createOverlay" style="display:none" onclick="closeCreateOverlay(event)">
  <div class="big-modal">
    <div class="bm-header">
      <div class="bm-title">+ Create / Upload Formula</div>
      <button class="panel-close" onclick="closeCreateDialog()">✕</button>
    </div>
    <div class="create-tabs">
      <button class="ctab active" id="ctab-upload" onclick="switchCtab('upload')">Upload JSON File</button>
      <button class="ctab" id="ctab-paste"  onclick="switchCtab('paste')">Paste / Write JSON</button>
    </div>

    <!-- UPLOAD TAB -->
    <div id="ctab-upload-body" class="ctab-body">
      <div class="upload-zone" id="uploadZone"
           ondragover="event.preventDefault();this.classList.add('drag')"
           ondragleave="this.classList.remove('drag')"
           ondrop="handleDrop(event)">
        <div class="uz-icon">📄</div>
        <div class="uz-text">Drag & drop a <strong>.json</strong> file here</div>
        <div class="uz-sub">or</div>
        <button class="btn-add" onclick="document.getElementById('fileInput').click()">Browse File</button>
        <input type="file" id="fileInput" accept=".json" style="display:none" onchange="handleFileSelect(event)">
      </div>
      <div id="uploadPreview" style="display:none">
        <div class="up-name" id="uploadFileName"></div>
        <pre class="up-preview" id="uploadPreviewText"></pre>
        <div class="fe-edit-actions">
          <button class="btn-secondary" onclick="clearUpload()">✕ Clear</button>
          <button class="btn-primary"   onclick="submitUpload()">Upload Formula</button>
        </div>
      </div>
    </div>

    <!-- PASTE TAB -->
    <div id="ctab-paste-body" class="ctab-body" style="display:none">
      <div class="fe-edit-label">Paste or write your formula JSON:</div>
      <textarea id="pasteArea" class="fe-textarea tall" spellcheck="false" placeholder='{
  "name": "My Formula",
  "tag":  "Category",
  "icon": "🔢",
  "formula": "y = mx + c",
  "inputs": [ ... ],
  "calculate": { "steps": [ ... ] }
}'></textarea>
      <div class="fe-edit-actions">
        <button class="btn-secondary" onclick="loadSampleJson()">Load Sample</button>
        <button class="btn-primary"   onclick="submitPaste()">Save Formula</button>
      </div>
    </div>
  </div>
</div>

<!-- Supabase JS SDK (CDN) — must load before supabaseClient.js -->
<script src="https://cdn.jsdelivr.net/npm/@supabase/supabase-js@2"></script>
<script src="static/js/supabaseClient.js"></script>
<script src="static/js/engine.js?v=2"></script>

<script>
//  FORMULA MANAGER  (all calls go through supabaseClient → Supabase)
let _fmData      = [];
let _currentFile = null;
let _feEditing   = false;
let _uploadRaw   = null;

/* ── Load formulas from Supabase ── */
async function loadFmData() {
  const { data, error } = await supabaseClient.from("formulas").select("id, slug, name, tag, icon, description").order("name", { ascending: true });
  if (error) {console.error("Failed to load formulas:", error.message); alert("Could not load formulas: " + error.message); _fmData = []; return;}
  _fmData = data;
}

/* ── All formulas = rows from Supabase ── */
function allFormulas() {
  return _fmData.map(f => ({
    type:        "json",
    id:          f.id,
    slug:        f.slug,
    name:        f.name,
    tag:         f.tag  || "",
    icon:        f.icon || "🔢",
    description: f.description || "",
  }));
}

/* ── Refresh flat dropdown ── */
async function refreshDropdown() {await syncFormulaUI();}

async function syncFormulaUI() {
  await loadFmData();
  renderFmList();
  const sel = document.getElementById("formulaDropdown");
  const prevValue = sel.value;
  while (sel.options.length > 1) sel.remove(1);
  allFormulas().forEach(f => {
    const opt = document.createElement("option");
    opt.value = f.slug;
    opt.textContent = f.icon + "  " + f.name;
    sel.appendChild(opt);
  });
  if ([...sel.options].some(o => o.value === prevValue)) {
    sel.value = prevValue;
  }
}

/* ── FORMULA MANAGER MODAL ── */
function openFormulaManager() {loadFmData().then(() => {renderFmList(); document.getElementById("fmOverlay").style.display = "flex";});}
function closeFormulaManager() {document.getElementById("fmOverlay").style.display = "none";}
function closeFmOverlay(e) {if (e.target === document.getElementById("fmOverlay")) closeFormulaManager();}
function renderFmList() {
  const q        = (document.getElementById("fmSearch").value || "").toLowerCase();
  const el       = document.getElementById("fmList");
  const all      = allFormulas();
  const filtered = all.filter(f =>
    f.name.toLowerCase().includes(q) ||
    f.tag.toLowerCase().includes(q)
  );
  if (!filtered.length) {el.innerHTML = `<div class="bm-empty">No formulas found.</div>`; return;}
  el.innerHTML = filtered.map(f => {
    return `
    <div class="fm-card fm-clickable" onclick="openFormulaView('${f.slug}')">
      <div class="fm-icon">${f.icon}</div>
      <div class="fm-info">
        <div class="fm-name">${f.name}</div>
        ${f.tag ? `<div class="fm-tag">${f.tag}</div>` : ""}
        <div class="fm-desc">${f.description}</div>
      </div>
      <div class="fm-actions" onclick="event.stopPropagation()">
        <button class="icon-btn" onclick="event.stopPropagation();openFormulaView('${f.slug}')">View</button>
        <button class="icon-btn" onclick="event.stopPropagation();openFormulaEdit('${f.slug}')">Edit</button>
        <button class="icon-btn danger" onclick="event.stopPropagation();confirmDelete('${f.slug}','${f.name}')">Delete</button>
      </div>
    </div>`;
  }).join("");
}

/* ── FORMULA READ / EDIT MODAL ── */
async function openFormulaView(slug) {_currentFile = slug; _feEditing   = false;
  const { data: row, error } = await supabaseClient.from("formulas").select("formula_json").eq("slug", slug).single();
  if (error) {alert("Could not load formula: " + error.message); return;}
  const data = row.formula_json;
  renderFeRead(data);
  document.getElementById("feTitle").textContent = data.icon + " " + data.name;
  document.getElementById("feReadMode").style.display  = "block";
  document.getElementById("feEditMode").style.display  = "none";
  document.getElementById("feEditBtn").textContent     = "Edit";
  document.getElementById("feOverlay").style.display   = "flex";
}

async function openFormulaEdit(slug) {await openFormulaView(slug); toggleFeEdit();}
function closeFeModal() {document.getElementById("feOverlay").style.display = "none"; _currentFile = null;}
function closeFeOverlay(e) {if (e.target === document.getElementById("feOverlay")) closeFeModal();}
function renderFeRead(data) {
  const defsHtml = (data.definitions||[]).map(d =>
    `<tr><td class="rd-sym">${d.symbol}</td><td>${d.label}</td></tr>`
  ).join("");
  const inputsHtml = (data.inputs||[]).map(inp => {
    const units = (inp.units||[]).map(u => u.label).join(", ");
    return `<tr>
      <td class="rd-sym">${inp.id}</td>
      <td>${inp.label}</td>
      <td>${inp.default}</td>
      <td class="rd-units">${units}</td>
    </tr>`;
  }).join("");
  document.getElementById("feReadMode").innerHTML = `
    <div class="rd-section">
      <div class="rd-label">Formula</div>
      <div class="rd-formula">${data.formula || "—"}</div>
    </div>

    ${data.description ? `<div class="rd-section"><div class="rd-label">Description</div><p class="rd-desc">${data.description}</p></div>` : ""}
    ${defsHtml ? `
    <div class="rd-section"><div class="rd-label">Definitions</div>
      <table class="rd-table"><tbody>${defsHtml}</tbody></table>
    </div>` : ""}

    ${inputsHtml ? `
    <div class="rd-section">
      <div class="rd-label">Inputs</div>
      <table class="rd-table">
        <thead><tr><th>ID</th><th>Label</th><th>Default</th><th>Available Units</th></tr></thead>
        <tbody>${inputsHtml}</tbody>
      </table>
    </div>` : ""}

    <div class="rd-section">
      <div class="rd-label">Raw JSON</div>
      <pre class="rd-json">${escHtml(JSON.stringify(data, null, 2))}</pre>
    </div>
  `;
}

function toggleFeEdit() {
  _feEditing = !_feEditing;
  if (_feEditing) {
    // populate textarea from read-mode raw JSON
    const pre = document.querySelector("#feReadMode .rd-json");
    document.getElementById("feEditArea").value = pre ? pre.textContent : "";
    document.getElementById("feReadMode").style.display = "none";
    document.getElementById("feEditMode").style.display = "block";
    document.getElementById("feEditBtn").textContent    = "View";
  } else {
    document.getElementById("feReadMode").style.display = "block";
    document.getElementById("feEditMode").style.display = "none";
    document.getElementById("feEditBtn").textContent    = "Edit";
  }
}
function cancelFeEdit() {_feEditing = false;
  document.getElementById("feReadMode").style.display = "block";
  document.getElementById("feEditMode").style.display = "none";
  document.getElementById("feEditBtn").textContent    = "Edit";
}

async function saveFeEdit() {
  let data;
  try { data = JSON.parse(document.getElementById("feEditArea").value); }
  catch(e) { alert("Invalid JSON:\n" + e.message); return; }

  if (!data || !data.name) {
    alert("Error: 'name' field is required");
    return;
  }
  const { error } = await supabaseClient.from("formulas")
    .update({ formula_json: data })
    .eq("slug", _currentFile);
  if (error) {
    alert("Save failed: " + error.message);
    return;
  }
  alert("Saved!");
  cancelFeEdit();
  renderFeRead(data);
  await syncFormulaUI();
}

/* ── DELETE ── */
async function deleteCurrentFormula() {
  if (!_currentFile) return;
  const name = document.getElementById("feTitle").textContent;
  if (!confirm(`Delete "${name}"?\nThis cannot be undone.`)) return;
  await doDelete(_currentFile);
  closeFeModal();
}

async function confirmDelete(slug, name) {if (!confirm(`Delete "${name}"?\nThis cannot be undone.`)) return; await doDelete(slug);}
async function doDelete(slug) {
  const { error } = await supabaseClient.from("formulas").delete().eq("slug", slug);
  if (error) {alert("Delete failed: " + error.message); return;}
  alert("Deleted!");
  await syncFormulaUI();
}

/* ── CREATE / UPLOAD DIALOG ── */
function openCreateDialog() {document.getElementById("createOverlay").style.display = "flex";}
function closeCreateDialog() {document.getElementById("createOverlay").style.display = "none";}
function closeCreateOverlay(e) {if (e.target === document.getElementById("createOverlay")) closeCreateDialog();}
function switchCtab(which) {
  ["upload","paste"].forEach(t => {
    document.getElementById(`ctab-${t}`).classList.toggle("active", t===which);
    document.getElementById(`ctab-${t}-body`).style.display = t===which ? "block" : "none";
  });
}

/* FILE UPLOAD */
function handleDrop(e) {e.preventDefault(); document.getElementById("uploadZone").classList.remove("drag"); const file = e.dataTransfer.files[0]; if (file) readUploadFile(file);}
function handleFileSelect(e) {const file = e.target.files[0]; if (file) readUploadFile(file);}
function readUploadFile(file) {
  const reader = new FileReader();
  reader.onload = ev => {
    _uploadRaw = ev.target.result;
    document.getElementById("uploadFileName").textContent = " " + file.name;
    document.getElementById("uploadPreviewText").textContent =
      _uploadRaw.length > 1500 ? _uploadRaw.slice(0,1500) + "\n…(truncated)" : _uploadRaw;
    document.getElementById("uploadZone").style.display    = "none";
    document.getElementById("uploadPreview").style.display = "block";
  };
  reader.readAsText(file);
}
function clearUpload() {
  _uploadRaw = null;
  document.getElementById("fileInput").value = "";
  document.getElementById("uploadZone").style.display    = "block";
  document.getElementById("uploadPreview").style.display = "none";
}

async function submitUpload() {
  if (!_uploadRaw) return;
  let data;
  try { data = JSON.parse(_uploadRaw); }
  catch(e) { alert("Invalid JSON:\n" + e.message); return; }
  await doSaveFormula(data);
}

async function submitPaste() {
  const raw = document.getElementById("pasteArea").value.trim();
  if (!raw) { alert("Paste some JSON first."); return; }
  let data;
  try { data = JSON.parse(raw); }
  catch(e) { alert("Invalid JSON:\n" + e.message); return; }
  await doSaveFormula(data);
}

async function doSaveFormula(data) {
  if (!data || !data.name) {alert("Error: 'name' field is required");return;}
  const { data: inserted, error } = await supabaseClient
    .from("formulas")
    .insert({ formula_json: data })
    .select("slug, name")
    .single();

  if (error) {alert("Error: " + error.message); return;}
  alert("Formula saved: " + inserted.slug);
  closeCreateDialog();
  await syncFormulaUI();
  clearUpload();
  document.getElementById("pasteArea").value = "";
}

function loadSampleJson() {
  supabaseClient
    .from("formulas")
    .select("formula_json")
    .eq("slug", "sample-pressure-drop")
    .single()
    .then(({ data, error }) => {
      if (error || !data) {
        alert("Sample not found. Upload one first.");
        return;
      }
      document.getElementById("pasteArea").value = JSON.stringify(data.formula_json, null, 2);
    });
}

function escHtml(s) {return s.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;");}

document.addEventListener("DOMContentLoaded", () => {refreshDropdown();});
</script>

</body>
</html>