const fs = require('fs');
const path = require('path');

const outputDir = path.join(__dirname, '..', 'seed');
const outputFile = path.join(outputDir, 'thred-inspired-sample-content.ghost.json');

const tags = [
  {id: 'tag-books', name: 'Books', slug: 'books'},
  {id: 'tag-business', name: 'Business', slug: 'business'},
  {id: 'tag-tech', name: 'Tech', slug: 'tech'},
  {id: 'tag-science', name: 'Science', slug: 'science'},
  {id: 'tag-design', name: 'Design', slug: 'design'},
  {id: 'tag-music', name: 'Music', slug: 'music'},
  {id: 'tag-health', name: 'Health', slug: 'health'},
  {id: 'tag-gaming', name: 'Gaming', slug: 'gaming'},
  {id: 'tag-travel', name: 'Travel', slug: 'travel'},
  {id: 'tag-diy', name: 'DIY', slug: 'diy'}
];

const postBlueprints = [
  ['books', 'Independent bookstores worth planning a full afternoon around', 'A short guide to cozy stores, smart curation, and how to browse without rushing the experience.'],
  ['books', 'How to build a reading routine when your schedule is a mess', 'Simple habits for reading more consistently without turning books into another productivity task.'],
  ['business', 'Pricing freelance design work without undercutting your future self', 'A practical framework for deciding rates, packaging work, and handling client expectations early.'],
  ['business', 'What small teams should document before they scale too fast', 'The lightweight systems that reduce chaos before hiring and handoff complexity grow.'],
  ['tech', 'Setting up your first home server without making it too complicated', 'A beginner-friendly overview of hardware choices, storage planning, and sensible first services.'],
  ['tech', 'AI tools that feel genuinely useful in a daily workflow', 'A grounded look at where automation helps, where it interrupts, and how to evaluate tradeoffs.'],
  ['science', 'Climate reporting habits that make difficult research easier to follow', 'How to read scientific updates with context, avoid hype, and keep track of what changed.'],
  ['science', 'What makes a good science explainer feel trustworthy', 'Clarity, framing, and citation habits that help complex ideas stay readable without becoming shallow.'],
  ['design', 'Portfolio case studies that show thinking instead of decoration', 'How to structure project stories so decisions, constraints, and outcomes are easy to understand.'],
  ['design', 'Why some interfaces feel calm even when they are information dense', 'Spacing, hierarchy, rhythm, and restraint working together to reduce visual stress.'],
  ['music', 'Starter listening setups that make home music sessions more enjoyable', 'A realistic guide to headphones, speakers, and desk setups for focused everyday listening.'],
  ['music', 'Beginner friendly ways to organize samples before a project gets messy', 'Folder structures, naming patterns, and curation habits that save time later.'],
  ['health', 'Morning routines that support energy without pretending every day is perfect', 'Flexible routines for sleep, movement, hydration, and focus that can survive real schedules.'],
  ['health', 'Meal prep ideas for people who get bored of repeating the same lunch', 'Modular ingredients and simple flavor changes that keep weekday meals easier to sustain.'],
  ['gaming', 'Games that are easy to recommend when friends like different genres', 'A list of accessible picks that still feel distinct in pacing, tone, and challenge.'],
  ['gaming', 'What actually matters most in a first gaming PC build', 'The parts worth prioritizing, where to save money, and how to avoid lopsided builds.'],
  ['travel', 'A slower approach to city travel for people who hate checklist tourism', 'How to shape a trip around neighborhoods, cafés, bookstores, and repeated visits instead of rushing.'],
  ['travel', 'Packing for a week with one bag without feeling underprepared', 'A calm, repeatable packing system focused on layering, daily use, and fewer just-in-case items.'],
  ['diy', 'Home workshop basics for makers who only have a small corner to work in', 'The compact tools and storage habits that make limited spaces feel surprisingly capable.'],
  ['diy', 'Simple repair projects that build confidence before bigger DIY upgrades', 'Low-risk weekend fixes that teach useful fundamentals without requiring specialist equipment.']
];

const featureImages = {
  books: 'https://images.unsplash.com/photo-1521587760476-6c12a4b040da?auto=format&fit=crop&w=1200&q=80',
  business: 'https://images.unsplash.com/photo-1552664730-d307ca884978?auto=format&fit=crop&w=1200&q=80',
  tech: 'https://images.unsplash.com/photo-1518770660439-4636190af475?auto=format&fit=crop&w=1200&q=80',
  science: 'https://images.unsplash.com/photo-1532187863486-abf9dbad1b69?auto=format&fit=crop&w=1200&q=80',
  design: 'https://images.unsplash.com/photo-1498050108023-c5249f4df085?auto=format&fit=crop&w=1200&q=80',
  music: 'https://images.unsplash.com/photo-1511379938547-c1f69419868d?auto=format&fit=crop&w=1200&q=80',
  health: 'https://images.unsplash.com/photo-1517836357463-d25dfeac3438?auto=format&fit=crop&w=1200&q=80',
  gaming: 'https://images.unsplash.com/photo-1542751371-adc38448a05e?auto=format&fit=crop&w=1200&q=80',
  travel: 'https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=1200&q=80',
  diy: 'https://images.unsplash.com/photo-1504148455328-c376907d081c?auto=format&fit=crop&w=1200&q=80'
};

function toMobiledoc(paragraphs) {
  return JSON.stringify({
    version: '0.3.1',
    atoms: [],
    cards: [],
    markups: [],
    sections: paragraphs.map((text) => [1, 'p', [[0, [], 0, text]]])
  });
}

function toSlug(text) {
  return text
    .toLowerCase()
    .replace(/[^a-z0-9\s-]/g, '')
    .trim()
    .replace(/\s+/g, '-');
}

function dateString(offsetDays) {
  const date = new Date(Date.UTC(2026, 1, 1, 3, 0, 0));
  date.setUTCDate(date.getUTCDate() - offsetDays);
  return date.toISOString().slice(0, 19).replace('T', ' ');
}

const posts = [];
const postsMeta = [];
const postsTags = [];

postBlueprints.forEach(([tagSlug, title, excerpt], index) => {
  const postId = `post-${index + 1}`;
  const tag = tags.find((item) => item.slug === tagSlug);
  const body = [
    excerpt,
    'This sample post exists to help preview archive lists, tag pages, and reading layouts while the theme is being refined.',
    'Once the structure and styling feel right, these placeholders can be replaced with real editorial content inside Ghost Admin.'
  ];

  posts.push({
    id: postId,
    title,
    slug: toSlug(title),
    status: 'published',
    visibility: 'public',
    type: 'post',
    featured: index % 5 === 0,
    custom_excerpt: excerpt,
    feature_image: featureImages[tagSlug],
    mobiledoc: toMobiledoc(body),
    created_at: dateString(index + 3),
    updated_at: dateString(index + 2),
    published_at: dateString(index + 3)
  });

  postsMeta.push({
    post_id: postId,
    feature_image_alt: `${tag.name} sample article cover image`,
    feature_image_caption: `${tag.name} category sample content`
  });

  postsTags.push({
    post_id: postId,
    tag_id: tag.id
  });
});

const payload = {
  db: [
    {
      meta: {
        exported_on: Date.now(),
        version: '6.28.0'
      },
      data: {
        posts,
        posts_meta: postsMeta,
        tags,
        posts_tags: postsTags,
        users: [],
        posts_authors: []
      }
    }
  ]
};

fs.mkdirSync(outputDir, {recursive: true});
fs.writeFileSync(outputFile, JSON.stringify(payload, null, 2));

console.log(`Sample Ghost import written to ${outputFile}`);