import { MetadataRoute } from 'next'
import { blogPosts } from '@/lib/data'
import fs from 'fs'
import path from 'path'

export default function sitemap(): MetadataRoute.Sitemap {
  const baseUrl = 'https://codeframeai.com'

  // Static pages
  const staticPages = [
    {
      url: baseUrl,
      lastModified: new Date(),
      changeFrequency: 'weekly' as const,
      priority: 1,
    },
    {
      url: `${baseUrl}/products`,
      lastModified: new Date(),
      changeFrequency: 'weekly' as const,
      priority: 0.9,
    },
    {
      url: `${baseUrl}/plans`,
      lastModified: new Date(),
      changeFrequency: 'monthly' as const,
      priority: 0.9,
    },
    {
      url: `${baseUrl}/trending`,
      lastModified: new Date(),
      changeFrequency: 'daily' as const,
      priority: 0.8,
    },
    {
      url: `${baseUrl}/contact`,
      lastModified: new Date(),
      changeFrequency: 'monthly' as const,
      priority: 0.7,
    },
    {
      url: `${baseUrl}/feedback`,
      lastModified: new Date(),
      changeFrequency: 'monthly' as const,
      priority: 0.6,
    },
    {
      url: `${baseUrl}/register-demo`,
      lastModified: new Date(),
      changeFrequency: 'monthly' as const,
      priority: 0.7,
    },
    {
      url: `${baseUrl}/blog`,
      lastModified: new Date(),
      changeFrequency: 'weekly' as const,
      priority: 0.8,
    },
  ]

  // Tool pages
  const toolPages = [
    {
      url: `${baseUrl}/mindmap-generator`,
      lastModified: new Date(),
      changeFrequency: 'monthly' as const,
      priority: 0.9,
    },
    {
      url: `${baseUrl}/ai-summary-generator`,
      lastModified: new Date(),
      changeFrequency: 'monthly' as const,
      priority: 0.9,
    },
    {
      url: `${baseUrl}/video-summarizer`,
      lastModified: new Date(),
      changeFrequency: 'monthly' as const,
      priority: 0.9,
    },
    {
      url: `${baseUrl}/pdf-summarizer`,
      lastModified: new Date(),
      changeFrequency: 'monthly' as const,
      priority: 0.9,
    },
    {
      url: `${baseUrl}/legal-document-analysis`,
      lastModified: new Date(),
      changeFrequency: 'monthly' as const,
      priority: 0.9,
    },
  ]

  // Blog posts
  const blogPages = blogPosts.map((post) => ({
    url: `${baseUrl}/blog/${post.slug}`,
    lastModified: new Date(post.date),
    changeFrequency: 'monthly' as const,
    priority: 0.7,
  }))

  // Dynamic trending topics
  let trendingPages: MetadataRoute.Sitemap = []
  try {
    const projectDataPath = path.join(process.cwd(), 'public', 'public_project.json')
    if (fs.existsSync(projectDataPath)) {
      const projects = JSON.parse(fs.readFileSync(projectDataPath, 'utf-8')) as any[]
      trendingPages = projects.map((project) => ({
        url: `${baseUrl}/trending/${project.projectId || project._id}`,
        lastModified: new Date(),
        changeFrequency: 'monthly' as const,
        priority: 0.6,
      }))
    }
  } catch (error) {
    console.error('Failed to generate trending pages for sitemap:', error)
  }

  return [...staticPages, ...toolPages, ...blogPages, ...trendingPages]
}