W_l10n_detect - Locale Detection & Template Rendering

The workflow JSON

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{
  "name": "W_L10N_DETECT - Locale Detection & Template Rendering",
  "active": false,
  "settings": {
    "executionTimeout": 5,
    "saveManualExecutions": true
  },
  "nodes": [
    {
      "parameters": {},
      "id": "l10n-trigger-01",
      "name": "IN - From Core",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "typeVersion": 1,
      "position": [
        0,
        0
      ]
    },
    {
      "parameters": {
        "language": "javascript",
        "jsCode": "const e = $json;\nconst text = (e.message?.text || e.userText || '').toString();\nconst buttonId = (e.message?.buttonId || '').toString().trim();\nconst isButton = (e.message?.type === 'button');\nconst l10nEnabled = !!(e.l10n && e.l10n.enabled);\n\n// Arabic script detection (Unicode blocks)\nconst hasArabic = /[\\u0600-\\u06FF\\u0750-\\u077F\\u08A0-\\u08FF]/.test(text);\nlet responseLocale = hasArabic ? 'ar' : 'fr';\n\n// Darija (Latin-script Moroccan/Algerian Arabic)\nconst darijaPatterns = [\n  'chno kayn','chnou kayen','wach kayn','wesh kayn','ash kayn','fin menu',\n  'nchouf','warini','bghit','wakha','wah','iyeh','mzyan','zwina',\n  'kml','kammel','kmel','ncommandi','sift','salam','slm','labas'\n];\nconst lower = text.toLowerCase();\nconst isDarija = !hasArabic && darijaPatterns.some(p => lower.includes(p));\nif (isDarija && l10nEnabled) responseLocale = 'darija';\n\n// Buttons: preserve last locale\nif (l10nEnabled && isButton) {\n  const prev = ((e.state && (e.state.lastResponseLocale || e.state.localePref || e.state.locale)) || '').toString().trim().toLowerCase();\n  if (['ar','fr','darija'].includes(prev)) responseLocale = prev;\n}\n\n// Feature disabled: fall back to legacy\nif (!l10nEnabled) {\n  responseLocale = ((e.state && (e.state.localePref || e.state.locale)) || 'fr').toString().toLowerCase();\n}\n\n// Normalize\nresponseLocale = ['ar','darija'].includes(responseLocale) ? responseLocale : 'fr';\n\n// LANG command\nconst langMatch = /^\\s*lang\\s+(fr|ar|dz)\\s*$/i.exec(text);\nlet langSwitched = false;\nlet persistLocale = false;\nif (l10nEnabled && langMatch) {\n  responseLocale = langMatch[1].toLowerCase() === 'dz' ? 'darija' : langMatch[1].toLowerCase();\n  langSwitched = true;\n  persistLocale = true;\n}\n\n// Sticky Arabic session\nconst stickyArEnabled = !!(e.l10n && e.l10n.stickyArEnabled);\nconst stickyAr = !!(e.state && e.state.stickyAr);\nif (l10nEnabled && stickyArEnabled && !hasArabic && isDarija && stickyAr) {\n  responseLocale = 'ar';\n}\n\nreturn [{ json: {\n  ...e,\n  _l10n: {\n    responseLocale,\n    hasArabic,\n    isDarija,\n    langSwitched,\n    persistLocale,\n    stickyAr\n  }\n}}];"
      },
      "id": "l10n-detect-02",
      "name": "Detect Locale",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        220,
        0
      ]
    },
    {
      "parameters": {
        "language": "javascript",
        "jsCode": "const e = $json;\nconst locale = (e._l10n?.responseLocale || 'fr');\nconst templates = (e.templates && typeof e.templates === 'object') ? e.templates : {};\nconst templateVars = (e.templateVars && typeof e.templateVars === 'object') ? e.templateVars : {};\n\nfunction renderTemplate(content, vars, allowed) {\n  const v = vars && typeof vars === 'object' ? vars : {};\n  const allow = Array.isArray(allowed) ? new Set(allowed.map(String)) : null;\n  return (content || '').replace(/\\{\\{\\s*([a-zA-Z0-9_]+)\\s*\\}\\}/g, (_, k) => {\n    const key = String(k);\n    if (allow && !allow.has(key)) return '';\n    const val = v[key];\n    return (val === undefined || val === null) ? '' : String(val);\n  }).replace(/\\{\\{[^}]+\\}\\}/g, '').trim();\n}\n\nfunction T(key, vars = {}, loc = locale, fallback = '') {\n  const k = `${key}::${loc}`;\n  const kfr = `${key}::fr`;\n  const content = templates[k] || templates[kfr] || fallback || '';\n  const allowed = templateVars[k] || templateVars[kfr] || null;\n  return renderTemplate(content, vars, allowed);\n}\n\nfunction BTN(id, frTitle, arTitle, darijaTitle) {\n  const title = locale === 'ar' ? arTitle : (locale === 'darija' ? (darijaTitle || frTitle) : frTitle);\n  return { id, title };\n}\n\n// Attach helpers as serializable references\nreturn [{ json: {\n  ...e,\n  _l10n: {\n    ...e._l10n,\n    T_fn: 'available',\n    BTN_fn: 'available',\n    locale\n  }\n}}];"
      },
      "id": "l10n-tmpl-03",
      "name": "Build Template Helpers",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        440,
        0
      ]
    }
  ],
  "connections": {
    "IN - From Core": {
      "main": [
        [
          {
            "node": "Detect Locale",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Detect Locale": {
      "main": [
        [
          {
            "node": "Build Template Helpers",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

About this workflow

W_L10N_DETECT - Locale Detection & Template Rendering. Uses executeWorkflowTrigger. Event-driven trigger; 3 nodes.

Source: https://github.com/zerAda/RestaurantAgentAutomation/blob/41a4d42dcd66e57b1e87b4750c0fd5fbf7058f68/workflows/W_L10N_DETECT.json — original creator credit. Request a take-down →

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