require('dotenv').config();
const mongoose = require('mongoose');
const slugify = require('slugify');

// Data from lams/app/components/layout/Header/header.json
const headerJsonData = {
  "logo": {
    "image": "/uploads/header/logo.jp",
    "href": "/"
  },
  "navLinks": [
    {
      "label": "About Us",
      "href": "/about",
      "children": [
        {
          "label": "History & Milestones",
          "href": "/about/history"
        },
        {
          "label": "Accreditation",
          "href": "/about/accreditation"
        },
        {
          "label": "Partnerships",
          "href": "/about/partnerships"
        }
      ]
    },
    {
      "label": "Programs",
      "href": "/programmes"
    },
    {
      "label": "Student Support",
      "href": "/student-support"
    },
    {
      "label": "Admissions & Tuition",
      "href": "/admissions"
    },
    {
      "label": "Blog",
      "href": "/blog"
    },
    {
      "label": "Contact",
      "href": "/contact"
    }
  ],
  "actions": {
    "signIn": {
      "label": "Sign In",
      "href": "/signin"
    },
    "cta": {
      "label": "Request Info",
      "href": "/request"
    }
  }
};

async function seedHeader() {
  try {
    console.log('=== Seed Header Data from JSON ===');
    console.log('Connecting to MongoDB...');
    
    await mongoose.connect(process.env.MONGODB_URI);
    console.log('✓ Connected to MongoDB');

    const Header = require('../models/header');
    const HeaderMenu = require('../models/headerMenu');

    // Step 1: Seed Header document
    console.log('\nStep 1: Seeding Header document...');
    
    const existingHeader = await Header.findOne();
    
    if (existingHeader) {
      console.log('⚠ Header document already exists. Updating...');
      existingHeader.logo = {
        light: headerJsonData.logo.image,
        dark: '',
        alt: 'LAMS Logo',
      };
      existingHeader.signInButton = {
        label: headerJsonData.actions.signIn.label,
        href: headerJsonData.actions.signIn.href,
      };
      existingHeader.ctaButton = {
        label: headerJsonData.actions.cta.label,
        href: headerJsonData.actions.cta.href,
        style: 'primary',
      };
      existingHeader.status = 'active';
      await existingHeader.save();
      console.log('✓ Header document updated');
    } else {
      const header = new Header({
        logo: {
          light: headerJsonData.logo.image,
          dark: '',
          alt: 'LAMS Logo',
        },
        signInButton: {
          label: headerJsonData.actions.signIn.label,
          href: headerJsonData.actions.signIn.href,
        },
        ctaButton: {
          label: headerJsonData.actions.cta.label,
          href: headerJsonData.actions.cta.href,
          style: 'primary',
        },
        status: 'active',
        order: 1,
      });
      await header.save();
      console.log('✓ Header document created');
    }

    // Step 2: Seed HeaderMenu documents
    console.log('\nStep 2: Seeding HeaderMenu documents...');
    
    const existingMenuCount = await HeaderMenu.countDocuments();
    
    if (existingMenuCount > 0) {
      console.log(`⚠ Found ${existingMenuCount} existing menu items. Skipping menu seed.`);
      console.log('  To re-seed menu, delete existing menu items first.');
    } else {
      let order = 0;
      
      for (const navLink of headerJsonData.navLinks) {
        // Create parent menu item
        const parentSlug = slugify(navLink.label, { lower: true, strict: true });
        const parentMenu = new HeaderMenu({
          title: navLink.label,
          slug: parentSlug,
          url: navLink.href,
          parentId: null,
          order: order++,
          status: 'active',
          type: 'internal',
        });
        await parentMenu.save();
        console.log(`  ✓ Created parent menu: ${navLink.label}`);
        
        // Create children menu items if they exist
        if (navLink.children && navLink.children.length > 0) {
          let childOrder = 0;
          for (const child of navLink.children) {
            const childSlug = slugify(child.label, { lower: true, strict: true });
            const childMenu = new HeaderMenu({
              title: child.label,
              slug: childSlug,
              url: child.href,
              parentId: parentMenu._id,
              order: childOrder++,
              status: 'active',
              type: 'internal',
            });
            await childMenu.save();
            console.log(`    ✓ Created child menu: ${child.label}`);
          }
        }
      }
      
      console.log(`✓ Created ${order} parent menu items with their children`);
    }

    console.log('\n=== Seed Complete ===');
    await mongoose.disconnect();
    console.log('✓ Disconnected from MongoDB');
    
  } catch (error) {
    console.error('✗ Seed failed:', error);
    process.exit(1);
  }
}

// Run seed if this script is executed directly
if (require.main === module) {
  seedHeader()
    .then(() => process.exit(0))
    .catch((error) => {
      console.error(error);
      process.exit(1);
    });
}

module.exports = seedHeader;