<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    public function up(): void
    {
        // ---------------------------------------------------------------
        // CHAT MESSAGES
        // ---------------------------------------------------------------
        Schema::create('chat_messages', function (Blueprint $table) {
            $table->id();
            $table->foreignId('user_id')->constrained()->cascadeOnDelete();
            $table->foreignId('reply_to_id')->nullable()->constrained('chat_messages')->nullOnDelete();
            $table->text('message');                              // Stored encrypted
            $table->boolean('is_deleted')->default(false);
            $table->unsignedBigInteger('deleted_by')->nullable(); // user_id of moderator/admin
            $table->timestamps();

            $table->index(['created_at']);
            $table->index('reply_to_id');
            $table->index(['user_id', 'created_at']);
        });

        // ---------------------------------------------------------------
        // CHAT MESSAGE REACTIONS
        // ---------------------------------------------------------------
        Schema::create('chat_message_reactions', function (Blueprint $table) {
            $table->id();
            $table->foreignId('message_id')->constrained('chat_messages')->cascadeOnDelete();
            $table->foreignId('user_id')->constrained()->cascadeOnDelete();
            $table->string('emoji', 16);
            $table->timestamps();

            $table->unique(['message_id', 'user_id', 'emoji'], 'uniq_reaction');
            $table->index(['message_id', 'user_id']);
        });

        // ---------------------------------------------------------------
        // CHAT MESSAGE REPORTS
        // ---------------------------------------------------------------
        Schema::create('chat_message_reports', function (Blueprint $table) {
            $table->id();
            $table->foreignId('reporter_id')->constrained('users')->cascadeOnDelete();
            $table->string('message_id');
            $table->text('message_text');
            $table->unsignedBigInteger('sender_id')->nullable();
            $table->string('sender_username')->nullable();
            $table->string('reason')->nullable();
            $table->json('context_messages')->nullable();         // Previous messages for context
            $table->enum('status', ['pending', 'reviewed', 'dismissed'])->default('pending');
            $table->text('admin_note')->nullable();
            $table->timestamps();

            $table->index('reporter_id');
            $table->index('status');
        });
    }

    public function down(): void
    {
        Schema::dropIfExists('chat_message_reports');
        Schema::dropIfExists('chat_message_reactions');
        Schema::dropIfExists('chat_messages');
    }
};