<?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('study_logs', function (Blueprint $table) {
            $table->id();
            $table->foreignId('user_id')->constrained()->cascadeOnDelete();
            $table->foreignId('course_id')->nullable()->constrained()->nullOnDelete();
            $table->foreignId('study_group_id')->nullable()->constrained('study_groups')->nullOnDelete();

            $table->date('study_date');
            $table->unsignedInteger('minutes')->default(0);
            $table->string('type')->default('personal'); // personal, group
            $table->string('title')->nullable();
            $table->text('notes')->nullable();

            $table->timestamps();

            $table->index(['user_id', 'study_date']);
            $table->index(['study_group_id', 'study_date']);
        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::dropIfExists('study_logs');
    }
};
