<?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
    {
        $teams = config('permission.teams');
        $tableNames = config('permission.table_names');
        $columnNames = config('permission.column_names');
        $pivotRole = $columnNames['role_pivot_key'] ?? 'role_id';
        $pivotPermission = $columnNames['permission_pivot_key'] ?? 'permission_id';

        throw_if(empty($tableNames), 'Error: config/permission.php not loaded. Run [php artisan config:clear] and try again.');
        throw_if($teams && empty($columnNames['team_foreign_key'] ?? null), 'Error: team_foreign_key on config/permission.php not loaded. Run [php artisan config:clear] and try again.');

        // 1. Permissions Table
        if (!Schema::hasTable($tableNames['permissions'])) {
            Schema::create($tableNames['permissions'], static function (Blueprint $table) {
                $table->id();
                $table->string('name');
                $table->string('guard_name');
                $table->timestamps();
                $table->unique(['name', 'guard_name']);
            });
        }

        // 2. Roles Table
        if (!Schema::hasTable($tableNames['roles'])) {
            Schema::create($tableNames['roles'], static function (Blueprint $table) use ($teams, $columnNames) {
                $table->id();
                if ($teams || config('permission.testing')) {
                    $table->unsignedBigInteger($columnNames['team_foreign_key'])->nullable();
                    $table->index($columnNames['team_foreign_key'], 'roles_team_foreign_key_index');
                }
                $table->string('name');
                $table->string('guard_name');
                $table->timestamps();
                if ($teams || config('permission.testing')) {
                    $table->unique([$columnNames['team_foreign_key'], 'name', 'guard_name']);
                } else {
                    $table->unique(['name', 'guard_name']);
                }
            });
        }

        // 3. Model Has Permissions
        if (!Schema::hasTable($tableNames['model_has_permissions'])) {
            Schema::create($tableNames['model_has_permissions'], static function (Blueprint $table) use ($tableNames, $columnNames, $pivotPermission, $teams) {
                $table->unsignedBigInteger($pivotPermission);
                $table->string('model_type');
                $table->unsignedBigInteger($columnNames['model_morph_key']);
                $table->index([$columnNames['model_morph_key'], 'model_type'], 'model_has_permissions_model_id_model_type_index');

                $table->foreign($pivotPermission)->references('id')->on($tableNames['permissions'])->cascadeOnDelete();
                
                if ($teams) {
                    $table->unsignedBigInteger($columnNames['team_foreign_key']);
                    $table->index($columnNames['team_foreign_key'], 'model_has_permissions_team_foreign_key_index');
                    $table->primary([$columnNames['team_foreign_key'], $pivotPermission, $columnNames['model_morph_key'], 'model_type'], 'model_has_permissions_permission_model_type_primary');
                } else {
                    $table->primary([$pivotPermission, $columnNames['model_morph_key'], 'model_type'], 'model_has_permissions_permission_model_type_primary');
                }
            });
        }

        // 4. Model Has Roles
        if (!Schema::hasTable($tableNames['model_has_roles'])) {
            Schema::create($tableNames['model_has_roles'], static function (Blueprint $table) use ($tableNames, $columnNames, $pivotRole, $teams) {
                $table->unsignedBigInteger($pivotRole);
                $table->string('model_type');
                $table->unsignedBigInteger($columnNames['model_morph_key']);
                $table->index([$columnNames['model_morph_key'], 'model_type'], 'model_has_roles_model_id_model_type_index');

                $table->foreign($pivotRole)->references('id')->on($tableNames['roles'])->cascadeOnDelete();
                
                if ($teams) {
                    $table->unsignedBigInteger($columnNames['team_foreign_key']);
                    $table->index($columnNames['team_foreign_key'], 'model_has_roles_team_foreign_key_index');
                    $table->primary([$columnNames['team_foreign_key'], $pivotRole, $columnNames['model_morph_key'], 'model_type'], 'model_has_roles_role_model_type_primary');
                } else {
                    $table->primary([$pivotRole, $columnNames['model_morph_key'], 'model_type'], 'model_has_roles_role_model_type_primary');
                }
            });
        }

        // 5. Role Has Permissions
        if (!Schema::hasTable($tableNames['role_has_permissions'])) {
            Schema::create($tableNames['role_has_permissions'], static function (Blueprint $table) use ($tableNames, $pivotRole, $pivotPermission) {
                $table->unsignedBigInteger($pivotPermission);
                $table->unsignedBigInteger($pivotRole);
                $table->foreign($pivotPermission)->references('id')->on($tableNames['permissions'])->cascadeOnDelete();
                $table->foreign($pivotRole)->references('id')->on($tableNames['roles'])->cascadeOnDelete();
                $table->primary([$pivotPermission, $pivotRole], 'role_has_permissions_permission_id_role_id_primary');
            });
        }

        app('cache')->store(config('permission.cache.store') != 'default' ? config('permission.cache.store') : null)->forget(config('permission.cache.key'));
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        $tableNames = config('permission.table_names');

        throw_if(empty($tableNames), 'Error: config/permission.php not found and defaults could not be merged. Please publish the package configuration before proceeding, or drop the tables manually.');

        Schema::dropIfExists($tableNames['role_has_permissions']);
        Schema::dropIfExists($tableNames['model_has_roles']);
        Schema::dropIfExists($tableNames['model_has_permissions']);
        Schema::dropIfExists($tableNames['roles']);
        Schema::dropIfExists($tableNames['permissions']);
    }
};