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database/migrations/2026_01_22_230908_create_lessons_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('lessons', function (Blueprint $table) {
+            $table->uuid('id')->primary();
+            $table->foreignUuid('module_id')->constrained('modules')->cascadeOnDelete();
+            $table->string('title');
+            $table->string('slug')->unique();
+            $table->string('type')->default('text'); // video, text, quiz, vocab_list
+            $table->longText('content')->nullable(); // For text lessons or transcripts
+            $table->string('video_url')->nullable(); // For video lessons
+            $table->string('content_pdf')->nullable(); // For PDF content
+            $table->integer('duration_seconds')->default(0); 
+            $table->boolean('is_free_preview')->default(false);
+            $table->integer('order_index')->default(0);
+            $table->json('metadata')->nullable();
+            $table->timestamps();
+            $table->softDeletes();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('lessons');
+    }
+};