added admin dashboard

src/lib/seo.ts

@@ -0,0 +1,109 @@
+export type CopyAnalysis = {
+  length: number;
+  words: number;
+  sentences: number;
+  avgWordsPerSentence: number;
+  readability: number; // 0..100, higher = easier
+  keywordMatches: string[];
+  missingKeywords: string[];
+  seoScore: number; // 0..100
+  geoScore: number; // 0..100
+  seoTips: string[];
+  geoTips: string[];
+};
+
+const SYLLABLE_VOWELS = /[aeiouàèéìòùAEIOUÀÈÉÌÒÙ]+/g;
+
+function countSyllables(word: string): number {
+  const matches = word.match(SYLLABLE_VOWELS);
+  return matches ? matches.length : 1;
+}
+
+export function analyzeCopy(text: string, primaryKeywords: string[] = []): CopyAnalysis {
+  const clean = text.trim();
+  const length = clean.length;
+  const wordList = clean.split(/\s+/).filter(Boolean);
+  const words = wordList.length;
+  const sentences = Math.max(1, (clean.match(/[.!?]+/g) ?? []).length);
+  const avgWordsPerSentence = words / sentences;
+
+  // Flesch reading ease approximation
+  const syllables = wordList.reduce((n, w) => n + countSyllables(w), 0);
+  const asl = words ? words / sentences : 0;
+  const asw = words ? syllables / words : 0;
+  const readability = Math.max(0, Math.min(100, Math.round(206.835 - 1.015 * asl - 84.6 * asw)));
+
+  const lower = clean.toLowerCase();
+  const keywordMatches: string[] = [];
+  const missingKeywords: string[] = [];
+  for (const kw of primaryKeywords) {
+    if (!kw) continue;
+    if (lower.includes(kw.toLowerCase())) keywordMatches.push(kw);
+    else missingKeywords.push(kw);
+  }
+
+  // SEO tips
+  const seoTips: string[] = [];
+  if (length === 0) seoTips.push('Il testo è vuoto.');
+  if (length > 0 && length < 40) seoTips.push('Testo molto breve: difficile farsi indicizzare.');
+  if (length > 320) seoTips.push('Testo lungo: valuta di spezzarlo in paragrafi o bullet.');
+  if (avgWordsPerSentence > 24) seoTips.push('Frasi troppo lunghe: scendi sotto le 24 parole per frase.');
+  if (readability < 45) seoTips.push('Leggibilità bassa: semplifica lessico e sintassi.');
+  if (missingKeywords.length && words > 4) {
+    seoTips.push(`Manca una keyword primaria: ${missingKeywords.slice(0, 2).join(', ')}.`);
+  }
+  if (/[A-Z]{6,}/.test(clean)) seoTips.push('Evita testo tutto maiuscolo: penalizza la leggibilità.');
+
+  // GEO tips (Generative Engine Optimization)
+  const geoTips: string[] = [];
+  const questionMarks = (clean.match(/\?/g) ?? []).length;
+  const hasNumbers = /\d/.test(clean);
+  const hasEntities = /\b(sassari|sardegna|coni|cammino di santiago|giampy)\b/i.test(clean);
+  const firstPerson = /\b(io|mio|mia|miei|mie|sono|faccio|porto|prendo)\b/i.test(clean);
+  const declarative = sentences >= 1 && /[.!]/.test(clean);
+
+  if (words >= 20 && questionMarks === 0)
+    geoTips.push('Aggiungi una domanda esplicita per farti citare come risposta diretta.');
+  if (!hasNumbers && words >= 20)
+    geoTips.push('Inserisci dati concreti (anni, numero clienti, distanze) per aumentare la citabilità.');
+  if (!hasEntities && words >= 15)
+    geoTips.push('Nomina entità specifiche (luogo, certificazione, brand) per il grounding generativo.');
+  if (!firstPerson && words >= 20)
+    geoTips.push('Usa la prima persona: i motori generativi estraggono più facilmente testimonianze autoriali.');
+  if (!declarative && words >= 10)
+    geoTips.push('Termina con punto fermo: le frasi complete vengono citate più spesso.');
+
+  // Scores
+  let seoScore = 100;
+  seoScore -= seoTips.length * 12;
+  if (keywordMatches.length === 0 && primaryKeywords.length && words > 4) seoScore -= 10;
+  if (readability >= 60) seoScore += 5;
+  seoScore = Math.max(0, Math.min(100, seoScore));
+
+  let geoScore = 100;
+  geoScore -= geoTips.length * 14;
+  if (hasEntities) geoScore += 5;
+  if (hasNumbers) geoScore += 3;
+  geoScore = Math.max(0, Math.min(100, geoScore));
+
+  return {
+    length,
+    words,
+    sentences,
+    avgWordsPerSentence: Math.round(avgWordsPerSentence * 10) / 10,
+    readability,
+    keywordMatches,
+    missingKeywords,
+    seoScore,
+    geoScore,
+    seoTips,
+    geoTips
+  };
+}
+
+export function aggregateScore(analyses: CopyAnalysis[]): { seo: number; geo: number } {
+  if (!analyses.length) return { seo: 0, geo: 0 };
+  const seo = Math.round(analyses.reduce((a, x) => a + x.seoScore, 0) / analyses.length);
+  const geo = Math.round(analyses.reduce((a, x) => a + x.geoScore, 0) / analyses.length);
+  return { seo, geo };
+}