import { buildMetaDescriptionPrompt, parseMetaDescriptionResponse } from '@power-seo/ai';

// 1. Build the prompt
const prompt = buildMetaDescriptionPrompt({
  title: 'Best Coffee Shops in New York City',
  content: 'Explore the top 15 coffee shops in NYC, from specialty espresso bars in Brooklyn...',
  keyphrase: 'coffee shops nyc',
  count: 3,
});

// 2. Send to your LLM of choice (example uses OpenAI)
import OpenAI from 'openai';
const openai = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });

const response = await openai.chat.completions.create({
  model: 'gpt-4o',
  messages: [
    { role: 'system', content: prompt.system },
    { role: 'user', content: prompt.user },
  ],
  max_tokens: prompt.maxTokens,
});

// 3. Parse the raw text response
const result = parseMetaDescriptionResponse(response.choices[0].message.content ?? '');
result.descriptions.forEach(({ text, charCount, pixelWidth }) => {
  console.log(`"${text}" — ${charCount} chars, ~${pixelWidth}px`);
});

import { buildMetaDescriptionPrompt, parseMetaDescriptionResponse } from '@power-seo/ai';
import type { MetaDescriptionInput, MetaDescriptionResult } from '@power-seo/ai';

const input: MetaDescriptionInput = {
  title: 'How to Optimize React Apps for SEO',
  content: 'Full article HTML or plain text about React SEO strategies...',
  keyphrase: 'react seo optimization',
  count: 3,
};

const prompt = buildMetaDescriptionPrompt(input);
// { system: 'You are an expert SEO copywriter...', user: 'Write 3 meta descriptions...', maxTokens: 300 }

const rawResponse = await yourLLM.complete(prompt.system, prompt.user, prompt.maxTokens);
const result: MetaDescriptionResult = parseMetaDescriptionResponse(rawResponse);

result.descriptions.forEach(({ text, charCount, pixelWidth }, i) => {
  console.log(`Option ${i + 1}: "${text}"`);
  console.log(`  ${charCount} characters, ~${pixelWidth}px`);
  const status = charCount >= 120 && charCount <= 158 ? 'GOOD' : 'ADJUST';
  console.log(`  Status: ${status}`);
});

import { buildTitlePrompt, parseTitleResponse } from '@power-seo/ai';
import type { TitleInput, TitleResult } from '@power-seo/ai';

const input: TitleInput = {
  content: 'Article about the best tools for keyword research in 2026...',
  keyphrase: 'keyword research tools',
  brand: 'PowerSEO',
  count: 5,
};

const prompt = buildTitlePrompt(input);
const rawResponse = await yourLLM.complete(prompt.system, prompt.user, prompt.maxTokens);

const result: TitleResult = parseTitleResponse(rawResponse);
result.titles.forEach(({ text, charCount, pixelWidth }, i) => {
  const status = charCount <= 60 ? 'OK' : 'TOO LONG';
  console.log(`${i + 1}. "${text}" — ${charCount} chars [${status}]`);
});

import { buildContentSuggestionsPrompt, parseContentSuggestionsResponse } from '@power-seo/ai';
import type { ContentSuggestionInput, ContentSuggestion } from '@power-seo/ai';

const input: ContentSuggestionInput = {
  title: 'React SEO Best Practices',
  content: '<h1>React SEO</h1><p>React is a JavaScript library...</p>',
  keyphrase: 'react seo best practices',
  wordCount: 450,
  currentScore: 58,
};

const prompt = buildContentSuggestionsPrompt(input);
const rawResponse = await yourLLM.complete(prompt.system, prompt.user, prompt.maxTokens);

const suggestions: ContentSuggestion[] = parseContentSuggestionsResponse(rawResponse);
suggestions.forEach(({ type, suggestion, priority }) => {
  console.log(`[${priority.toUpperCase()}] ${type}: ${suggestion}`);
});

// Example output:
// [HIGH] missing-section: Add a section covering server-side rendering with Next.js
// [HIGH] keyphrase-gap: 'react seo best practices' appears only once — aim for 2-3 uses
// [MEDIUM] faq-addition: Add an FAQ section answering "Does React hurt SEO?"
// [LOW] schema-addition: Add Article schema markup for rich result eligibility

import { buildSerpPredictionPrompt, parseSerpPredictionResponse } from '@power-seo/ai';
import type { SerpFeatureInput, SerpFeaturePrediction } from '@power-seo/ai';

const input: SerpFeatureInput = {
  title: 'How to Make Cold Brew Coffee at Home',
  content: '<h1>Cold Brew Coffee</h1><h2>Step 1: Grind the Coffee</h2><p>...</p>',
  url: 'https://example.com/guides/cold-brew-coffee',
  schema: { '@type': 'HowTo', name: 'How to Make Cold Brew Coffee' },
};

const prompt = buildSerpPredictionPrompt(input);
const rawResponse = await yourLLM.complete(prompt.system, prompt.user, prompt.maxTokens);

const predictions: SerpFeaturePrediction[] = parseSerpPredictionResponse(rawResponse);
predictions.forEach(({ feature, eligible, confidence, recommendation }) => {
  console.log(`${feature}: eligible=${eligible}, confidence=${confidence}`);
  if (recommendation) console.log(`  → ${recommendation}`);
});

import { analyzeSerpEligibility } from '@power-seo/ai';

// HowTo — detected by step-structured headings and HowTo schema
const result = analyzeSerpEligibility({
  title: 'How to Install Node.js on Ubuntu',
  content: '<h2>Step 1: Update apt</h2><p>...</p><h2>Step 2: Install nvm</h2><p>...</p>',
  schema: {
    '@type': 'HowTo',
    step: [{ '@type': 'HowToStep' }, { '@type': 'HowToStep' }],
  },
});
// { 'how-to': { eligible: true, reason: 'HowTo schema present with 2 steps' }, ... }

// FAQ — detected by FAQPage schema
const faqResult = analyzeSerpEligibility({
  title: 'React SEO FAQ',
  content: '...',
  schema: {
    '@type': 'FAQPage',
    mainEntity: [
      { '@type': 'Question', name: 'Does React hurt SEO?' },
      { '@type': 'Question', name: 'How do I add meta tags in React?' },
    ],
  },
});
// { 'faq': { eligible: true, reason: 'FAQPage schema with 2 questions detected' }, ... }

// Product — detected by Product schema with price and rating
const productResult = analyzeSerpEligibility({
  title: 'Premium Widget — Buy Online',
  content: '...',
  schema: {
    '@type': 'Product',
    name: 'Premium Widget',
    offers: { '@type': 'Offer', price: '29.99', priceCurrency: 'USD' },
    aggregateRating: { '@type': 'AggregateRating', ratingValue: '4.7', reviewCount: '128' },
  },
});
// { 'product': { eligible: true, reason: 'Product schema with price and rating' }, ... }

// OpenAI
import OpenAI from 'openai';
import { buildMetaDescriptionPrompt, parseMetaDescriptionResponse } from '@power-seo/ai';

const openai = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });
const prompt = buildMetaDescriptionPrompt({
  title: 'My Article',
  content: '...',
  keyphrase: 'my topic',
});

const openaiResponse = await openai.chat.completions.create({
  model: 'gpt-4o',
  messages: [
    { role: 'system', content: prompt.system },
    { role: 'user', content: prompt.user },
  ],
  max_tokens: prompt.maxTokens,
});
const result = parseMetaDescriptionResponse(openaiResponse.choices[0].message.content ?? '');

// Anthropic Claude
import Anthropic from '@anthropic-ai/sdk';
const anthropic = new Anthropic({ apiKey: process.env.ANTHROPIC_API_KEY });

const claudeResponse = await anthropic.messages.create({
  model: 'claude-opus-4-6',
  system: prompt.system,
  messages: [{ role: 'user', content: prompt.user }],
  max_tokens: prompt.maxTokens,
});
const result2 = parseMetaDescriptionResponse(
  claudeResponse.content[0].type === 'text' ? claudeResponse.content[0].text : '',
);

// Google Gemini
import { GoogleGenerativeAI } from '@google/generative-ai';
const genai = new GoogleGenerativeAI(process.env.GEMINI_API_KEY!);
const model = genai.getGenerativeModel({ model: 'gemini-1.5-pro' });
const geminiResponse = await model.generateContent(`${prompt.system}\n\n${prompt.user}`);
const result3 = parseMetaDescriptionResponse(geminiResponse.response.text());

import type {
  PromptTemplate, // { system: string; user: string; maxTokens: number }
  MetaDescriptionInput, // { title, content, keyphrase?, count?, minLength?, maxLength?, tone? }
  MetaDescriptionResult, // { descriptions: Array<{ text, charCount, pixelWidth }> }
  ContentSuggestionInput, // { title, content, keyphrase?, wordCount?, currentScore? }
  ContentSuggestionType, // 'missing-section' | 'internal-link' | 'keyphrase-gap' | 'faq-addition' | 'schema-addition' | 'readability'
  ContentSuggestion, // { type: ContentSuggestionType; suggestion: string; priority: 'high' | 'medium' | 'low' }
  SerpFeature, // 'featured-snippet' | 'faq' | 'how-to' | 'knowledge-panel' | 'product' | 'article'
  SerpFeatureInput, // { title, content, url?, schema? }
  SerpFeaturePrediction, // { feature: SerpFeature; eligible: boolean; confidence: number; recommendation?: string }
  TitleInput, // { content, keyphrase?, brand?, count?, maxLength? }
  TitleResult, // { titles: Array<{ text, charCount, pixelWidth }> }
} from '@power-seo/ai';