// SEO Analysis
const seoAnalysisStep = createStep({
  id: 'seo-analysis',
  description: 'SEO optimization analysis',
  inputSchema: z.object({
    content: z.string(),
    type: z.enum(['article', 'blog', 'social']).default('article'),
  }),
  outputSchema: z.object({
    seoScore: z.number(),
    keywords: z.array(z.string()),
  }),
  execute: async ({ inputData }) => {
    console.log('🔍 Running SEO analysis...')
    await new Promise(resolve => setTimeout(resolve, 800))

    const words = inputData.content.toLowerCase().split(/\s+/)
    const keywords = words.filter(word => word.length > 4).slice(0, 3)

    return {
      seoScore: Math.floor(Math.random() * 40) + 60,
      keywords,
    }
  },
})

// Readability Analysis
const readabilityStep = createStep({
  id: 'readability-analysis',
  description: 'Content readability analysis',
  inputSchema: z.object({
    content: z.string(),
    type: z.enum(['article', 'blog', 'social']).default('article'),
  }),
  outputSchema: z.object({
    readabilityScore: z.number(),
    gradeLevel: z.string(),
  }),
  execute: async ({ inputData }) => {
    console.log('📖 Running readability analysis...')
    await new Promise(resolve => setTimeout(resolve, 600))

    const sentences = inputData.content.split(/[.!?]+/).length
    const words = inputData.content.split(/\s+/).length
    const avgWordsPerSentence = words / sentences

    const score = Math.max(0, 100 - avgWordsPerSentence * 3)
    const gradeLevel = score > 80 ? 'Easy' : score > 60 ? 'Medium' : 'Hard'

    return {
      readabilityScore: Math.floor(score),
      gradeLevel,
    }
  },
})

// Sentiment Analysis
const sentimentStep = createStep({
  id: 'sentiment-analysis',
  description: 'Content sentiment analysis',
  inputSchema: z.object({
    content: z.string(),
    type: z.enum(['article', 'blog', 'social']).default('article'),
  }),
  outputSchema: z.object({
    sentiment: z.enum(['positive', 'neutral', 'negative']),
    confidence: z.number(),
  }),
  execute: async ({ inputData }) => {
    console.log('😊 Running sentiment analysis...')
    await new Promise(resolve => setTimeout(resolve, 700))

    const content = inputData.content.toLowerCase()
    const positiveWords = ['good', 'great', 'excellent', 'amazing']
    const negativeWords = ['bad', 'terrible', 'awful', 'horrible']

    const positive = positiveWords.filter(word => content.includes(word)).length
    const negative = negativeWords.filter(word => content.includes(word)).length

    let sentiment: 'positive' | 'neutral' | 'negative' = 'neutral'
    if (positive > negative) sentiment = 'positive'
    if (negative > positive) sentiment = 'negative'

    return {
      sentiment,
      confidence: Math.random() * 0.3 + 0.7, // 0.7-1.0
    }
  },
})