feat: Remove outdated migration

models/blog.js

@@ -0,0 +1,135 @@
+const mongoose = require('mongoose');
+
+const blogSchema = new mongoose.Schema({
+  // Basic blog information
+  title: {
+    type: String,
+    required: true,
+    trim: true
+  },
+  slug: {
+    type: String,
+    required: true,
+    unique: true,
+    trim: true
+  },
+  excerpt: {
+    type: String,
+    required: true,
+    maxlength: 500
+  },
+  content: {
+    type: mongoose.Schema.Types.Mixed, // Có thể là string HTML hoặc JSON EditorJS
+    required: true
+  },
+  
+  // Media
+  featuredImage: {
+    type: String,
+    default: ''
+  },
+  galleryImages: [{
+    type: String
+  }], // Mảng URL ảnh cho gallery (details-2, details-3)
+  
+  // Author and publishing
+  author: {
+    type: String,
+    default: 'Admin'
+  },
+  publishedAt: {
+    type: String, // Format: "11 March 2025"
+    default: function() {
+      return new Date().toLocaleDateString('en-GB', {
+        day: 'numeric',
+        month: 'long', 
+        year: 'numeric'
+      });
+    }
+  },
+  
+  // Categorization (simple strings, no references)
+  category: [{
+    type: String // ["Visa", "Travel", ...] - Một bài có thể thuộc nhiều category
+  }],
+  tags: [{
+    type: String // ["WorkVisa", "StudentVisa", ...]
+  }],
+  
+  // Status and features
+  status: {
+    type: String,
+    enum: ['draft', 'published'],
+    default: 'published'
+  },
+  isFeatured: {
+    type: Boolean,
+    default: false
+  },
+  
+  // Comments count (có thể fake trước)
+  commentsCount: {
+    type: Number,
+    default: 0
+  }
+}, {
+  timestamps: true
+});
+
+// Indexes
+blogSchema.index({ slug: 1 });
+blogSchema.index({ status: 1, createdAt: -1 });
+blogSchema.index({ category: 1, status: 1 });
+blogSchema.index({ isFeatured: 1, status: 1 });
+blogSchema.index({ tags: 1, status: 1 });
+
+// Remove __v from JSON output
+blogSchema.set('toJSON', {
+  transform: function(doc, ret) {
+    delete ret.__v;
+    return ret;
+  }
+});
+
+// Pre-save middleware
+blogSchema.pre('save', function(next) {
+  // Auto-generate slug if not provided
+  if (!this.slug && this.title) {
+    this.slug = this.title
+      .toLowerCase()
+      .replace(/[^a-z0-9\s-]/g, '')
+      .replace(/\s+/g, '-')
+      .replace(/-+/g, '-')
+      .trim('-');
+  }
+  
+  next();
+});
+
+// Static methods
+blogSchema.statics.getPublished = function() {
+  return this.find({ status: 'published' }).sort({ createdAt: -1 });
+};
+
+blogSchema.statics.getFeatured = function() {
+  return this.find({ 
+    status: 'published',
+    isFeatured: true
+  }).sort({ createdAt: -1 });
+};
+
+blogSchema.statics.getByCategory = function(category) {
+  return this.find({ 
+    status: 'published',
+    category: { $in: [category] } // Tìm trong array categories
+  }).sort({ createdAt: -1 });
+};
+
+blogSchema.statics.getByTag = function(tag) {
+  return this.find({ 
+    status: 'published',
+    tags: tag
+  }).sort({ createdAt: -1 });
+};
+
+module.exports = mongoose.model('Blog', blogSchema);