<?php

declare(strict_types=1);

namespace Tests\Feature\FormBuilder\Bindings;

use App\Models\FormBuilder\FormField;
use App\Models\FormBuilder\FormFieldLibrary;
use App\Models\FormBuilder\FormSchema;
use App\Models\Organisation;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Str;
use Tests\TestCase;

/**
 * Seeds pre-migration JSON into `form_fields.binding` and
 * `form_field_library.default_binding`, then runs the migration forward
 * and back asserting both directions.
 *
 * Forward: rows land in `form_field_bindings` with the correct
 * owner_type/owner_id + translated columns. Backward: JSON is
 * reconstructed into the source tables, table dropped.
 */
final class FormFieldBindingMigrationTest extends TestCase
{
    use RefreshDatabase;

    private const MIGRATION_PATH = 'database/migrations/2026_04_25_100000_create_form_field_bindings_table.php';

    public function test_forward_migration_backfills_rows_from_both_json_sources(): void
    {
        // Start from a clean slate where form_field_bindings does not exist.
        $this->artisan('migrate:rollback', ['--step' => 1])->assertSuccessful();
        $this->assertFalse(Schema::hasTable('form_field_bindings'));

        [$fieldAId, $fieldCId, $fieldDId] = $this->seedFieldsWithBindingJson();
        [$libAId, $libCId] = $this->seedLibraryWithBindingJson();

        $this->artisan('migrate', [
            '--path' => self::MIGRATION_PATH,
            '--realpath' => false,
        ])->assertSuccessful();

        $this->assertTrue(Schema::hasTable('form_field_bindings'));

        $rows = DB::table('form_field_bindings')->orderBy('owner_type')->orderBy('owner_id')->get();
        $this->assertCount(5, $rows, 'Expected 3 field + 2 library rows');

        $fieldRowA = DB::table('form_field_bindings')
            ->where('owner_type', 'form_field')
            ->where('owner_id', $fieldAId)
            ->first();
        $this->assertNotNull($fieldRowA);
        $this->assertSame('person', $fieldRowA->target_entity);
        $this->assertSame('email', $fieldRowA->target_attribute);
        $this->assertSame('entity_owned', $fieldRowA->mode);
        $this->assertNull($fieldRowA->sync_direction);
        $this->assertSame('overwrite', $fieldRowA->merge_strategy);
        $this->assertSame(50, (int) $fieldRowA->trust_level);
        $this->assertSame(0, (int) $fieldRowA->is_identity_key);

        $fieldRowC = DB::table('form_field_bindings')
            ->where('owner_type', 'form_field')
            ->where('owner_id', $fieldCId)
            ->first();
        $this->assertNotNull($fieldRowC);
        $this->assertSame('mirrored', $fieldRowC->mode);
        $this->assertSame('write_on_submit', $fieldRowC->sync_direction);
        $this->assertSame('user_profile', $fieldRowC->target_entity);
        $this->assertSame('emergency_contact_name', $fieldRowC->target_attribute);

        $fieldRowD = DB::table('form_field_bindings')
            ->where('owner_type', 'form_field')
            ->where('owner_id', $fieldDId)
            ->first();
        $this->assertNotNull($fieldRowD);
        $this->assertSame('entity_owned', $fieldRowD->mode);

        $libRowA = DB::table('form_field_bindings')
            ->where('owner_type', 'form_field_library')
            ->where('owner_id', $libAId)
            ->first();
        $this->assertNotNull($libRowA);
        $this->assertSame('person', $libRowA->target_entity);
        $this->assertSame('first_name', $libRowA->target_attribute);
        $this->assertSame('entity_owned', $libRowA->mode);

        $libRowC = DB::table('form_field_bindings')
            ->where('owner_type', 'form_field_library')
            ->where('owner_id', $libCId)
            ->first();
        $this->assertNotNull($libRowC);
        $this->assertSame('mirrored', $libRowC->mode);
    }

    public function test_rollback_reconstructs_json_and_drops_table(): void
    {
        $this->artisan('migrate:rollback', ['--step' => 1])->assertSuccessful();
        [$fieldAId, , ] = $this->seedFieldsWithBindingJson();
        [$libAId, ] = $this->seedLibraryWithBindingJson();

        $this->artisan('migrate', [
            '--path' => self::MIGRATION_PATH,
            '--realpath' => false,
        ])->assertSuccessful();

        // Wipe the source JSON to prove the rollback writes back from rows.
        DB::table('form_fields')->where('id', $fieldAId)->update(['binding' => null]);
        DB::table('form_field_library')->where('id', $libAId)->update(['default_binding' => null]);

        $this->artisan('migrate:rollback', ['--step' => 1])->assertSuccessful();

        $this->assertFalse(Schema::hasTable('form_field_bindings'));

        $field = DB::table('form_fields')->where('id', $fieldAId)->first();
        $this->assertNotNull($field->binding);
        $json = json_decode((string) $field->binding, true);
        $this->assertSame([
            'mode' => 'entity_owned',
            'entity' => 'person',
            'column' => 'email',
        ], $json);

        $lib = DB::table('form_field_library')->where('id', $libAId)->first();
        $this->assertNotNull($lib->default_binding);
        $libJson = json_decode((string) $lib->default_binding, true);
        $this->assertSame([
            'mode' => 'entity_owned',
            'entity' => 'person',
            'column' => 'first_name',
        ], $libJson);
    }

    /** @return array{0:string,1:string,2:string} */
    private function seedFieldsWithBindingJson(): array
    {
        $org = Organisation::factory()->create();
        $schema = FormSchema::factory()->create(['organisation_id' => $org->id]);

        $fieldA = (string) Str::ulid();
        $fieldC = (string) Str::ulid();
        $fieldD = (string) Str::ulid();

        DB::table('form_fields')->insert([
            [
                'id' => $fieldA,
                'form_schema_id' => $schema->id,
                'field_type' => 'EMAIL',
                'slug' => 'email',
                'label' => 'E-mail',
                'binding' => json_encode(['mode' => 'entity_owned', 'entity' => 'person', 'column' => 'email']),
                'value_storage_hint' => 'indexed',
                'sort_order' => 0,
                'created_at' => now(),
                'updated_at' => now(),
            ],
            [
                'id' => $fieldC,
                'form_schema_id' => $schema->id,
                'field_type' => 'TEXT',
                'slug' => 'noodcontact',
                'label' => 'Noodcontact',
                'binding' => json_encode([
                    'mode' => 'mirrored',
                    'entity' => 'user_profile',
                    'column' => 'emergency_contact_name',
                    'sync_direction' => 'write_on_submit',
                ]),
                'value_storage_hint' => 'indexed',
                'sort_order' => 1,
                'created_at' => now(),
                'updated_at' => now(),
            ],
            [
                'id' => $fieldD,
                'form_schema_id' => $schema->id,
                'field_type' => 'TEXT',
                'slug' => 'voornaam',
                'label' => 'Voornaam',
                'binding' => json_encode(['mode' => 'entity_owned', 'entity' => 'person', 'column' => 'first_name']),
                'value_storage_hint' => 'indexed',
                'sort_order' => 2,
                'created_at' => now(),
                'updated_at' => now(),
            ],
        ]);

        return [$fieldA, $fieldC, $fieldD];
    }

    /** @return array{0:string,1:string} */
    private function seedLibraryWithBindingJson(): array
    {
        $org = Organisation::factory()->create();

        $libA = (string) Str::ulid();
        $libC = (string) Str::ulid();

        DB::table('form_field_library')->insert([
            [
                'id' => $libA,
                'organisation_id' => $org->id,
                'name' => 'Voornaam bibliotheek',
                'slug' => 'voornaam-lib',
                'field_type' => 'TEXT',
                'label' => 'Voornaam',
                'default_binding' => json_encode(['mode' => 'entity_owned', 'entity' => 'person', 'column' => 'first_name']),
                'default_is_required' => false,
                'default_is_filterable' => false,
                'usage_count' => 0,
                'is_system' => false,
                'is_active' => true,
                'created_at' => now(),
                'updated_at' => now(),
            ],
            [
                'id' => $libC,
                'organisation_id' => $org->id,
                'name' => 'Noodcontact bibliotheek',
                'slug' => 'noodcontact-lib',
                'field_type' => 'TEXT',
                'label' => 'Noodcontact',
                'default_binding' => json_encode([
                    'mode' => 'mirrored',
                    'entity' => 'user_profile',
                    'column' => 'emergency_contact_phone',
                    'sync_direction' => 'write_on_submit',
                ]),
                'default_is_required' => false,
                'default_is_filterable' => false,
                'usage_count' => 0,
                'is_system' => false,
                'is_active' => true,
                'created_at' => now(),
                'updated_at' => now(),
            ],
        ]);

        return [$libA, $libC];
    }
}