<?php

declare(strict_types=1);

namespace Database\Seeders;

use App\Enums\FormBuilder\FormFieldType;
use App\Enums\FormBuilder\FormPurpose;
use App\Enums\FormBuilder\FormSchemaSnapshotMode;
use App\Enums\FormBuilder\FormSubmissionMode;
use App\Enums\FormBuilder\FormSubmissionStatus;
use App\Enums\FormBuilder\FormValueStorageHint;
use App\Models\Event;
use App\Models\FormBuilder\FormField;
use App\Models\FormBuilder\FormSchema;
use App\Models\FormBuilder\FormSubmission;
use App\Models\FormBuilder\FormTemplate;
use App\Models\FormBuilder\FormValue;
use App\Models\Organisation;
use App\Models\Person;
use App\Models\PersonTag;
use App\Models\UserOrganisationTag;
use App\Services\FormBuilder\FormSubmissionService;
use App\Services\FormBuilder\FormValueService;
use Illuminate\Console\Command;
use Illuminate\Support\Str;

/**
 * Seeds the form-builder layer for DevSeeder: 16 system form_templates per
 * org, one FormSchema per event, the canonical 16-field registration set,
 * and a realistic batch of FormSubmissions for approved/applied/no_show
 * persons (same rule as the forms:migrate-legacy-data command).
 *
 * Callers MUST wrap this in ActivityLog::suppressed() — every field create
 * would otherwise fire a logFieldChange("created") entry.
 */
final class FormBuilderDevSeeder
{
    /**
     * 16 canonical registration fields mirroring the legacy system templates.
     * Used by both seedSystemTemplates() and seedEventSchema() so the shape
     * stays aligned.
     *
     * @return list<array<string, mixed>>
     */
    public static function canonicalFields(): array
    {
        return [
            ['type' => FormFieldType::HEADING, 'slug' => 'persoonlijke-voorkeuren', 'label' => 'Persoonlijke voorkeuren', 'help_text' => 'Vertel ons wat we over jou moeten weten', 'display_width' => 'full'],
            ['type' => FormFieldType::SELECT, 'slug' => 'shirtmaat', 'label' => 'Shirtmaat', 'options' => ['XS', 'S', 'M', 'L', 'XL', 'XXL', 'XXXL'], 'is_filterable' => true, 'display_width' => 'half'],
            ['type' => FormFieldType::MULTISELECT, 'slug' => 'dieetwensen', 'label' => 'Dieetwensen', 'options' => ['Vegetarisch', 'Veganistisch', 'Halal', 'Glutenvrij', 'Lactosevrij', "Geen pinda's", 'Geen noten'], 'is_filterable' => true, 'display_width' => 'half'],
            ['type' => FormFieldType::HEADING, 'slug' => 'vergoeding', 'label' => 'Vergoeding', 'help_text' => 'Kies hoe je wilt worden bedankt voor je inzet', 'display_width' => 'full'],
            ['type' => FormFieldType::RADIO, 'slug' => 'vergoedingstype', 'label' => 'Vergoedingstype', 'options' => [
                ['label' => 'Pro Deo', 'description' => 'Je werkt als vrijwilliger zonder financiële vergoeding'],
                ['label' => 'Entreeticket', 'description' => 'Je ontvangt een gratis festivalticket als dank voor je inzet'],
                ['label' => 'Vrijwilligersvergoeding', 'description' => 'Je ontvangt een vergoeding conform de vrijwilligersregeling'],
            ], 'is_required' => true, 'display_width' => 'full'],
            ['type' => FormFieldType::HEADING, 'slug' => 'noodcontact', 'label' => 'Noodcontact', 'help_text' => 'Wie kunnen we bereiken bij calamiteiten?', 'display_width' => 'full'],
            ['type' => FormFieldType::TEXT, 'slug' => 'noodcontact-naam', 'label' => 'Noodcontact naam', 'is_pii' => true, 'display_width' => 'half'],
            ['type' => FormFieldType::TEXT, 'slug' => 'noodcontact-telefoon', 'label' => 'Noodcontact telefoon', 'is_pii' => true, 'display_width' => 'half'],
            ['type' => FormFieldType::HEADING, 'slug' => 'ervaring-vaardigheden', 'label' => 'Ervaring & vaardigheden', 'help_text' => "Welke diploma's en skills heb je?", 'display_width' => 'full'],
            ['type' => FormFieldType::BOOLEAN, 'slug' => 'ehbo-bhv-diploma', 'label' => 'EHBO / BHV diploma', 'is_filterable' => true, 'display_width' => 'half'],
            ['type' => FormFieldType::BOOLEAN, 'slug' => 'rijbewijs', 'label' => 'Rijbewijs', 'is_filterable' => true, 'display_width' => 'half'],
            ['type' => FormFieldType::BOOLEAN, 'slug' => 'eerder-vrijwilliger-geweest', 'label' => 'Eerder vrijwilliger geweest', 'is_filterable' => true, 'display_width' => 'half'],
            ['type' => FormFieldType::TAG_PICKER, 'slug' => 'certificaten-vaardigheden', 'label' => 'Certificaten & vaardigheden', 'is_filterable' => true, 'display_width' => 'full'],
            ['type' => FormFieldType::HEADING, 'slug' => 'aanvullende-informatie', 'label' => 'Aanvullende informatie', 'display_width' => 'full'],
            ['type' => FormFieldType::BOOLEAN, 'slug' => 'toestemming-gegevensverwerking', 'label' => 'Toestemming gegevensverwerking', 'help_text' => 'Ik geef toestemming voor de verwerking van mijn persoonsgegevens ten behoeve van de organisatie van dit evenement, conform de Algemene Verordening Gegevensbescherming (AVG).', 'is_required' => true, 'display_width' => 'full'],
            ['type' => FormFieldType::TEXTAREA, 'slug' => 'opmerkingen', 'label' => 'Opmerkingen', 'display_width' => 'full'],
        ];
    }

    public static function seedSystemTemplates(Organisation $org): int
    {
        $count = 0;
        foreach (self::canonicalFields() as $sortOrder => $field) {
            $snapshot = [
                'schema_version' => 1,
                'snapshot_created_at' => now()->toIso8601String(),
                'schema' => [
                    'name' => $field['label'].' (template)',
                    'slug' => $field['slug'],
                    'purpose' => FormPurpose::EVENT_REGISTRATION->value,
                    'description' => null,
                    'locale' => 'nl',
                    'freeze_on_submit' => false,
                    'section_level_submit' => false,
                    'settings' => [],
                ],
                'sections' => [],
                'fields' => [[
                    'id' => (string) Str::ulid(),
                    'slug' => $field['slug'],
                    'field_type' => $field['type']->value,
                    'label' => $field['label'],
                    'help_text' => $field['help_text'] ?? null,
                    'section_slug' => null,
                    'options' => $field['options'] ?? null,
                    'validation_rules' => null,
                    'is_required' => $field['is_required'] ?? false,
                    'is_filterable' => $field['is_filterable'] ?? false,
                    'is_pii' => $field['is_pii'] ?? false,
                    'binding' => null, // Pattern B — snapshot embeds null for form-owned fields.
                    'conditional_logic' => null,
                    'translations' => null,
                    'value_storage_hint' => $field['type']->recommendedValueStorageHint()->value,
                    'sort_order' => $sortOrder + 1,
                ]],
            ];

            FormTemplate::create([
                'organisation_id' => $org->id,
                'name' => $field['label'],
                'slug' => $field['slug'],
                'purpose' => FormPurpose::EVENT_REGISTRATION,
                'description' => null,
                'schema_snapshot' => $snapshot,
                'is_active' => true,
            ])->forceFill(['is_system' => true])->save();
            $count++;
        }

        return $count;
    }

    /**
     * Create one FormSchema (event_registration) for this event with the
     * canonical 16-field set.
     */
    public static function seedEventSchema(Event $event): FormSchema
    {
        $schema = FormSchema::create([
            'organisation_id' => $event->organisation_id,
            'owner_type' => 'event',
            'owner_id' => $event->id,
            'name' => $event->name.' — registratie',
            'slug' => Str::slug($event->slug.'-registratie'),
            'purpose' => FormPurpose::EVENT_REGISTRATION,
            'description' => "Registratieformulier voor {$event->name}.",
            'is_published' => in_array(
                $event->status,
                ['registration_open', 'buildup', 'showday', 'teardown', 'closed'],
                true
            ),
            'submission_mode' => FormSubmissionMode::DRAFT_SINGLE,
            'locale' => 'nl',
            'snapshot_mode' => FormSchemaSnapshotMode::NEVER,
            'freeze_on_submit' => false,
            'section_level_submit' => false,
            'auto_save_enabled' => false,
        ]);

        foreach (self::canonicalFields() as $sortOrder => $field) {
            FormField::create([
                'form_schema_id' => $schema->id,
                'field_type' => $field['type']->value,
                'slug' => $field['slug'],
                'label' => $field['label'],
                'help_text' => $field['help_text'] ?? null,
                'options' => $field['options'] ?? null,
                'is_required' => $field['is_required'] ?? false,
                'is_filterable' => $field['is_filterable'] ?? false,
                'is_portal_visible' => true,
                'is_admin_only' => false,
                'is_pii' => $field['is_pii'] ?? false,
                'display_width' => $field['display_width'] ?? 'full',
                'value_storage_hint' => $field['type']->recommendedValueStorageHint(),
                'sort_order' => $sortOrder + 1,
            ]);
        }

        return $schema;
    }

    /**
     * For each person with status ∈ applied/approved/no_show on this event,
     * create one FormSubmission with a realistic handful of FormValues.
     * Status follows the same rule as MigrateLegacyFormsData.
     */
    public static function seedSubmissionsForEvent(Event $event, FormSchema $schema): int
    {
        $fields = $schema->fields()->get()->keyBy('slug');
        $persons = Person::where('event_id', $event->id)
            ->whereIn('status', ['applied', 'approved', 'no_show'])
            ->get();

        $count = 0;
        foreach ($persons as $person) {
            $isSubmittedStatus = in_array($person->status, ['applied', 'approved', 'no_show'], true);
            $status = $isSubmittedStatus ? FormSubmissionStatus::SUBMITTED : FormSubmissionStatus::DRAFT;

            $submission = FormSubmission::create([
                'form_schema_id' => $schema->id,
                'subject_type' => 'person',
                'subject_id' => $person->id,
                'submitted_by_user_id' => $person->user_id,
                'status' => $status,
                'is_test' => false,
                'submitted_in_locale' => 'nl',
                'submitted_at' => $status === FormSubmissionStatus::SUBMITTED ? now()->subDays(rand(1, 30)) : null,
                'schema_version_at_submit' => $status === FormSubmissionStatus::SUBMITTED ? 1 : null,
            ]);

            $seed = crc32((string) $person->id);
            $sizes = ['XS', 'S', 'M', 'L', 'XL', 'XXL'];
            self::createValueIfField($fields, 'shirtmaat', ['value' => $sizes[$seed % 6]], $submission);
            self::createValueIfField($fields, 'dieetwensen', ($seed % 3 === 0) ? ['Vegetarisch'] : [], $submission);
            self::createValueIfField($fields, 'rijbewijs', ['value' => ($seed % 2) === 0], $submission);
            self::createValueIfField($fields, 'ehbo-bhv-diploma', ['value' => ($seed % 4) === 0], $submission);
            self::createValueIfField($fields, 'noodcontact-naam', ['value' => 'Partner / Familielid'], $submission);
            self::createValueIfField($fields, 'toestemming-gegevensverwerking', ['value' => true], $submission);

            $count++;
        }

        return $count;
    }

    /**
     * @param  \Illuminate\Support\Collection<string, FormField>  $fields
     * @param  mixed  $value
     */
    private static function createValueIfField($fields, string $slug, $value, FormSubmission $submission): void
    {
        $field = $fields->get($slug);
        if ($field === null) {
            return;
        }

        FormValue::create([
            'form_submission_id' => $submission->id,
            'form_field_id' => $field->id,
            'value' => $value,
        ]);
    }

    // =========================================================================
    // Sprint 0.5 — event_registration showcase (FORM-02 / §31.10 demo)
    //
    // Creates ONE dedicated, public-token-enabled event_registration schema
    // per dev org, with a curated 5-field set, a draft submission, and a
    // fully-submitted submission whose TAG_PICKER values exercise the
    // SyncTagPickerSelectionsOnSubmit listener so user_organisation_tags
    // populate during `migrate:fresh --seed`.
    // =========================================================================

    /**
     * Showcase field definitions. 5 fields per Sprint 0.5 spec.
     *
     * @return list<array<string, mixed>>
     */
    private static function showcaseFieldDefinitions(): array
    {
        return [
            [
                'type' => FormFieldType::HEADING,
                'slug' => 'over-jou',
                'label' => 'Over jou',
                'is_required' => false,
                'is_filterable' => false,
                'display_width' => 'full',
                'value_storage_hint' => FormValueStorageHint::JSON,
            ],
            [
                'type' => FormFieldType::SELECT,
                'slug' => 'shirtmaat',
                'label' => 'Shirtmaat',
                'options' => ['XS', 'S', 'M', 'L', 'XL', 'XXL'],
                'is_required' => true,
                'is_filterable' => true,
                'display_width' => 'half',
                'value_storage_hint' => FormValueStorageHint::STRING,
            ],
            [
                'type' => FormFieldType::CHECKBOX_LIST,
                'slug' => 'dieetwensen',
                'label' => 'Dieetwensen',
                'options' => ['Vegetarisch', 'Veganistisch', 'Glutenvrij', 'Lactosevrij', 'Halal', 'Kosher'],
                'is_required' => false,
                'is_filterable' => true,
                'display_width' => 'half',
                'value_storage_hint' => FormValueStorageHint::JSON,
            ],
            [
                'type' => FormFieldType::TAG_PICKER,
                'slug' => 'vaardigheden',
                'label' => 'Vaardigheden en certificaten',
                // validation_rules.tag_categories = [] means "all active
                // person_tags for this org" — the FormFieldResource picks
                // up every active tag when no category filter is set.
                'validation_rules' => null,
                'is_required' => false,
                'is_filterable' => true,
                'display_width' => 'full',
                'value_storage_hint' => FormValueStorageHint::JSON,
            ],
            [
                'type' => FormFieldType::AVAILABILITY_PICKER,
                'slug' => 'beschikbaarheid',
                'label' => 'Wanneer ben je beschikbaar?',
                'help_text' => 'Vink alle dagdelen aan waarop je kunt werken.',
                'is_required' => true,
                'is_filterable' => false,
                'display_width' => 'full',
                'value_storage_hint' => FormValueStorageHint::JSON,
            ],
            [
                'type' => FormFieldType::SECTION_PRIORITY,
                'slug' => 'sectie_voorkeur',
                'label' => 'Bij welke sectie wil je het liefst werken?',
                'help_text' => 'Sleep je voorkeuren in volgorde. Nummer 1 is je eerste keuze.',
                // UI soft cap; the hard cap of 5 lives in
                // FormValueService shape validation.
                'validation_rules' => ['max_priorities' => 3],
                'is_required' => false,
                'is_filterable' => false,
                'display_width' => 'full',
                'value_storage_hint' => FormValueStorageHint::JSON,
            ],
            [
                'type' => FormFieldType::TEXTAREA,
                'slug' => 'opmerkingen',
                'label' => 'Opmerkingen',
                'is_required' => false,
                'is_filterable' => false,
                'display_width' => 'full',
                'value_storage_hint' => FormValueStorageHint::STRING,
            ],
        ];
    }

    /**
     * Create the public-token-enabled showcase schema on the given primary
     * event, plus its 5 fields. Returns the schema for follow-up seeding.
     */
    public static function seedEventRegistrationShowcaseSchema(Organisation $org, Event $event): FormSchema
    {
        $name = 'Vrijwilligersregistratie '.$event->name;
        $slug = self::uniqueSchemaSlug($org, Str::slug($name));

        /** @var FormSchema $schema */
        $schema = FormSchema::create([
            'organisation_id' => $org->id,
            'owner_type' => 'event',
            'owner_id' => $event->id,
            'name' => $name,
            'slug' => $slug,
            'purpose' => FormPurpose::EVENT_REGISTRATION,
            'description' => "Demo-formulier voor het end-to-end doorlopen van de vrijwilligersregistratie voor {$event->name}.",
            'is_published' => true,
            'submission_mode' => FormSubmissionMode::DRAFT_SINGLE,
            'public_token' => (string) Str::ulid(),
            'locale' => 'nl',
            'snapshot_mode' => FormSchemaSnapshotMode::ON_SUBMIT,
            'freeze_on_submit' => false,
            'section_level_submit' => false,
            'auto_save_enabled' => false,
            'version' => 1,
        ]);

        foreach (self::showcaseFieldDefinitions() as $sortOrder => $def) {
            FormField::create([
                'form_schema_id' => $schema->id,
                'field_type' => $def['type']->value,
                'slug' => $def['slug'],
                'label' => $def['label'],
                'help_text' => $def['help_text'] ?? null,
                'options' => $def['options'] ?? null,
                'validation_rules' => $def['validation_rules'] ?? null,
                'is_required' => $def['is_required'] ?? false,
                'is_filterable' => $def['is_filterable'] ?? false,
                'is_portal_visible' => true,
                'is_admin_only' => false,
                'is_pii' => false,
                'display_width' => $def['display_width'] ?? 'full',
                'role_restrictions' => null,
                'value_storage_hint' => $def['value_storage_hint'] ?? FormValueStorageHint::JSON,
                'sort_order' => $sortOrder + 1,
            ]);
        }

        return $schema->refresh();
    }

    /**
     * Seed one draft + one fully-submitted submission on the showcase
     * schema. The submitted one triggers FormSubmissionSubmitted so the
     * §31.10 listener runs and `user_organisation_tags` picks up
     * `source=self_reported` rows for the submitter's user.
     *
     * Returns summary stats for caller-side logging.
     *
     * @return array{draft_person: ?Person, submitted_person: ?Person, synced_tag_count: int}
     */
    public static function seedEventRegistrationShowcaseSubmissions(FormSchema $schema, Organisation $org): array
    {
        $event = Event::withoutGlobalScopes()->find($schema->owner_id);
        if ($event === null) {
            return ['draft_person' => null, 'submitted_person' => null, 'synced_tag_count' => 0];
        }

        // Deterministic pick: first two approved persons with a user_id
        // on this event, ordered by ULID (chronological insertion order).
        $candidates = Person::withoutGlobalScopes()
            ->where('event_id', $event->id)
            ->whereNotNull('user_id')
            ->orderBy('id')
            ->take(2)
            ->get();

        $draftPerson = $candidates->first();
        $submittedPerson = $candidates->skip(1)->first();

        if ($draftPerson !== null) {
            self::buildDraftSubmission($schema, $draftPerson);
        }

        $syncedTagCount = 0;
        if ($submittedPerson !== null) {
            $syncedTagCount = self::buildSubmittedSubmission($schema, $org, $submittedPerson);
        }

        return [
            'draft_person' => $draftPerson,
            'submitted_person' => $submittedPerson,
            'synced_tag_count' => $syncedTagCount,
        ];
    }

    /**
     * Orchestration helper: schema + submissions + console output, matching
     * the exact format Bert asked for in Sprint 0.5.
     */
    public static function seedEventRegistrationShowcase(
        Organisation $org,
        Event $event,
        ?Command $command = null,
    ): FormSchema {
        $schema = self::seedEventRegistrationShowcaseSchema($org, $event);

        $appUrl = rtrim((string) config('app.url'), '/');
        $publicUrl = "{$appUrl}/api/v1/public/forms/{$schema->public_token}";

        if ($command !== null) {
            $command->info("[FormBuilderDevSeeder] Seeded event_registration schema for {$org->name}:");
            $command->info("  public URL: {$publicUrl}");
        }

        $stats = self::seedEventRegistrationShowcaseSubmissions($schema, $org);

        if ($command !== null) {
            $draft = $stats['draft_person'];
            if ($draft === null) {
                $command->warn('[FormBuilderDevSeeder] No person with user_id found — draft submission skipped.');
            } else {
                $command->info("[FormBuilderDevSeeder] Draft registration stored for {$draft->full_name} (person {$draft->id})");
            }

            $submitted = $stats['submitted_person'];
            if ($submitted === null) {
                $command->warn('[FormBuilderDevSeeder] Not enough persons with user_id for submitted demo — §31.10 sync not exercised.');
            } else {
                $command->info("[FormBuilderDevSeeder] Submitted registration for {$submitted->full_name}");
                $command->info("  TAG_PICKER sync result: {$stats['synced_tag_count']} self_reported tags now on user {$submitted->user_id}");
            }
        }

        return $schema;
    }

    private static function buildDraftSubmission(FormSchema $schema, Person $person): FormSubmission
    {
        $fields = $schema->fields()->get()->keyBy('slug');

        /** @var FormSubmission $submission */
        $submission = FormSubmission::create([
            'form_schema_id' => $schema->id,
            'subject_type' => 'person',
            'subject_id' => $person->id,
            'submitted_by_user_id' => $person->user_id,
            'status' => FormSubmissionStatus::DRAFT->value,
            'is_test' => false,
            'submitted_in_locale' => 'nl',
            'opened_at' => now()->subDay(),
        ]);

        // Realistic partial fill — deliberately skip TAG_PICKER (that path
        // is exercised by the submitted demo below).
        self::createValueIfField($fields, 'shirtmaat', 'M', $submission);
        self::createValueIfField($fields, 'dieetwensen', ['Vegetarisch'], $submission);

        return $submission->refresh();
    }

    /**
     * Full-submit path: create draft, fill values (incl. TAG_PICKER), run
     * the service so FormSubmissionSubmitted fires and §31.10 runs. Queue
     * connection is flipped to sync for the duration so the listener
     * executes inline rather than being deferred to redis during seeding.
     */
    private static function buildSubmittedSubmission(FormSchema $schema, Organisation $org, Person $person): int
    {
        $tagIds = PersonTag::withoutGlobalScopes()
            ->where('organisation_id', $org->id)
            ->where('is_active', true)
            ->orderBy('sort_order')
            ->orderBy('name')
            ->take(3)
            ->pluck('id')
            ->all();

        /** @var FormSubmissionService $submissionService */
        $submissionService = app(FormSubmissionService::class);

        $submission = $submissionService->createDraft(
            $schema,
            $person,
            $person->user,
            [
                'opened_at' => now()->subHours(2),
                'is_test' => false,
            ],
        );

        /** @var FormValueService $valueService */
        $valueService = app(FormValueService::class);
        $valueService->upsertMany(
            $submission,
            [
                'shirtmaat' => 'L',
                'dieetwensen' => ['Glutenvrij', 'Lactosevrij'],
                'vaardigheden' => $tagIds,
                'opmerkingen' => 'Kan eerder als nodig.',
            ],
            $person->user,
        );

        // Force synchronous listener execution while we're in the seeder
        // so user_organisation_tags is populated by the time the migrate
        // command returns (see `QUEUE_CONNECTION=redis` in local .env).
        $previousConnection = config('queue.default');
        config(['queue.default' => 'sync']);

        try {
            $submissionService->submit($submission->refresh(), $person->user);
        } finally {
            config(['queue.default' => $previousConnection]);
        }

        return UserOrganisationTag::query()
            ->where('user_id', $person->user_id)
            ->where('organisation_id', $org->id)
            ->where('source', 'self_reported')
            ->count();
    }

    private static function uniqueSchemaSlug(Organisation $org, string $base): string
    {
        $candidate = $base;
        $i = 2;
        while (FormSchema::withoutGlobalScopes()
            ->where('organisation_id', $org->id)
            ->where('slug', $candidate)
            ->exists()
        ) {
            $candidate = $base.'-'.$i;
            $i++;
        }

        return $candidate;
    }
}