// Ingredient database
window.ingredientsData = {
  "milk": {
    "name": "Milk",
    "category": "Dairy",
    "concerns": ["Common allergen", "Lactose intolerance"],
    "alternatives": [{
      "name": "Oatly Oat Milk Barista",
      "badges": ["Dairy-Free", "Vegan"],
      "link": "https://amzn.to/example1"
    }]
  },
  "whey": {
    "name": "Whey",
    "category": "Dairy",
    "concerns": ["Dairy derivative", "Lactose content"],
    "alternatives": [{
      "name": "Orgain Vegan Protein",
      "badges": ["Plant-Based", "No Whey"],
      "link": "https://amzn.to/example2"
    }]
  },
  "soy lecithin": {
    "name": "Soy Lecithin",
    "category": "Emulsifier",
    "concerns": ["Common soy allergen", "Highly processed additive"],
    "alternatives": [{
      "name": "Sunflower Lecithin",
      "badges": ["Soy-Free", "Non-GMO"],
      "link": "https://amzn.to/example3"
    }]
  },
  "pgpr": {
    "name": "PGPR (Polyglycerol Polyricinoleate)",
    "category": "Emulsifier",
    "concerns": ["Possible gut microbiome disruption (emerging)"],
    "alternatives": [{
      "name": "Hu Chocolate",
      "badges": ["No Emulsifiers", "Paleo", "Soy-Free"],
      "link": "https://amzn.to/example4"
    }]
  },
  "wheat flour": {
    "name": "Wheat Flour",
    "category": "Gluten",
    "concerns": ["Gluten content", "Celiac risk"],
    "alternatives": [{
      "name": "Bob's Red Mill GF Flour",
      "badges": ["Gluten-Free"],
      "link": "https://amzn.to/example5"
    }]
  },
  "sugar": {
    "name": "Sugar",
    "category": "Sweetener",
    "concerns": ["Overconsumption risk", "Metabolic concerns"],
    "alternatives": [{
      "name": "Coconut Sugar",
      "badges": ["Lower glycemic"],
      "link": "https://amzn.to/example6"
    }]
  },
  "palm oil": {
    "name": "Palm Oil",
    "category": "Fat/Oil",
    "concerns": ["Saturated fat", "Environmental impact"],
    "alternatives": [{
      "name": "Coconut Oil",
      "badges": ["Sustainable"],
      "link": "https://amzn.to/example7"
    }]
  },
  "titanium dioxide": {
    "name": "Titanium Dioxide",
    "category": "Colorant",
    "concerns": ["Banned in the EU", "Linked to gut inflammation in animal studies"],
    "alternatives": [{
      "name": "Natural Food Color Powder",
      "badges": ["No Titanium Dioxide", "Plant-Based"],
      "link": "https://amzn.to/fake-titanium-free"
    }]
  },
  "red 40": {
    "name": "Red 40 (Allura Red)",
    "category": "Colorant",
    "concerns": ["Linked to hyperactivity", "May trigger allergic reactions"],
    "alternatives": [{
      "name": "ColorKitchen Red Dye",
      "badges": ["Plant-Based", "No Artificial Colors"],
      "link": "https://amzn.to/fake-red-alt"
    }]
  },
  "yellow 5": {
    "name": "Yellow 5 (Tartrazine)",
    "category": "Colorant",
    "concerns": ["May cause hives", "Linked to behavioral issues in children"],
    "alternatives": [{
      "name": "Supernatural Yellow Food Colors",
      "badges": ["No Synthetic Dyes", "Kid-Safe"],
      "link": "https://amzn.to/fake-yellow5"
    }]
  },
  "gelatin": {
    "name": "Gelatin",
    "category": "Thickener",
    "concerns": [
      "Often derived from pork or non-kosher beef sources",
      "Kosher status depends on certification"
    ],
    "kosherSensitive": true,
    "alternatives": [{
      "name": "Agar Agar",
      "badges": ["Plant-Based", "Kosher-Certified Available"],
      "link": "https://amzn.to/agar"
    }]
  },
  "glycerin": {
    "name": "Glycerin",
    "category": "Humectant",
    "concerns": [
      "Source may be plant-based or animal-derived",
      "Kosher status depends on certification"
    ],
    "kosherSensitive": true,
    "alternatives": [{
      "name": "NOW Vegetable Glycerin",
      "badges": ["Plant-Based", "Kosher"],
      "link": "https://amzn.to/glycerin"
    }]
  },
  "enzymes": {
    "name": "Enzymes",
    "category": "Processing Aid",
    "concerns": [
      "Can be derived from microbial, animal, or plant sources",
      "Kosher status depends on source and supervision"
    ],
    "kosherSensitive": true,
    "alternatives": []
  }
};

// Analyzer Logic
document.getElementById('analyzer-form').addEventListener('submit', function (e) {
  e.preventDefault();

  const input = document.getElementById('ingredients-input').value;
  const resultsDiv = document.getElementById('results');
  resultsDiv.innerHTML = '';

  if (!input.trim()) {
    resultsDiv.innerHTML = '<p class="text-red-600">Please enter some ingredients to analyze.</p>';
    return;
  }

  const rawIngredients = input.split(',').map(i => i.trim().toLowerCase());
  const data = window.ingredientsData;
  const matched = [];

  rawIngredients.forEach(ing => {
    Object.keys(data).forEach(key => {
      if (ing.includes(key)) {
        matched.push(data[key]);
      }
    });
  });

  if (matched.length === 0) {
    resultsDiv.innerHTML = '<p class="text-yellow-600">No flagged ingredients found. Looks clean, but we suggest double-checking spelling or synonyms!</p>';
    return;
  }

  matched.forEach(item => {
    const concerns = item.concerns?.map(c => `<li>❗ ${c}</li>`).join('') || '';
    const alt = item.alternatives?.length
      ? `<ul class="list-disc list-inside text-sm mt-2">${item.alternatives.map(a => `
          <li>
            <a href="${a.link}" target="_blank" class="text-blue-600 underline">${a.name}</a> 
            <span class="text-xs text-gray-500">(${a.badges.join(', ')})</span>
          </li>`).join('')}</ul>`
      : '<p class="text-sm text-gray-500">No alternatives listed.</p>';

    const kosherTag = item.kosherSensitive ? `<span class="ml-2 text-yellow-600 text-xs">⚠️ Kosher-sensitive</span>` : '';

    const block = `
      <div class="bg-white rounded shadow p-4 mb-4 border-l-4 border-red-400">
        <h4 class="text-lg font-semibold">${item.name} <span class="text-sm text-gray-500">[${item.category}]</span>${kosherTag}</h4>
        <ul class="text-sm text-gray-700 mt-2">${concerns}</ul>
        <div class="mt-2">
          <strong class="text-sm text-gray-800">Suggested Alternatives:</strong>
          ${alt}
        </div>
      </div>
    `;
    resultsDiv.innerHTML += block;
  });
});