<?php

declare(strict_types=1);

namespace App\Providers;

use App\FormBuilder\Bindings\BindingTypeRegistry;
use App\FormBuilder\Purposes\PurposeRegistry;
use App\Models\Company;
use App\Models\CrowdList;
use App\Models\CrowdType;
use App\Models\EmailChangeRequest;
use App\Models\EmailLog;
use App\Models\Event;
use App\Models\FestivalSection;
use App\Models\FormBuilder\FormField;
use App\Models\FormBuilder\FormFieldLibrary;
use App\Models\FormBuilder\FormSchema;
use App\Models\FormBuilder\FormSchemaSection;
use App\Models\FormBuilder\FormSchemaWebhook;
use App\Models\FormBuilder\FormSubmission;
use App\Models\FormBuilder\FormSubmissionDelegation;
use App\Models\FormBuilder\FormSubmissionSectionStatus;
use App\Models\FormBuilder\FormTemplate;
use App\Models\FormBuilder\FormValue;
use App\Models\FormBuilder\FormValueOption;
use App\Models\FormBuilder\FormWebhookDelivery;
use App\Models\ImpersonationSession;
use App\Models\Location;
use App\Models\MfaBackupCode;
use App\Models\MfaEmailCode;
use App\Models\Organisation;
use App\Models\OrganisationEmailSettings;
use App\Models\OrganisationEmailTemplate;
use App\Models\Person;
use App\Models\PersonIdentityMatch;
use App\Models\PersonSectionPreference;
use App\Models\PersonTag;
use App\Models\Shift;
use App\Models\ShiftAssignment;
use App\Models\ShiftWaitlist;
use App\Models\TimeSlot;
use App\Models\TrustedDevice;
use App\Models\User;
use App\Models\UserInvitation;
use App\Models\UserOrganisationTag;
use App\Models\UserProfile;
use App\Models\VolunteerAvailability;
use App\Events\FormBuilder\FormSubmissionSubmitted;
use App\Listeners\FormBuilder\SyncTagPickerSelectionsOnSubmit;
use App\Listeners\FormBuilder\TriggerPersonIdentityMatchOnFormSubmit;
use App\Observers\FormBuilder\FormFieldChildTablesCascadeObserver;
use App\Observers\FormBuilder\FormSubmissionObserver;
use App\Observers\FormBuilder\FormValueObserver;
use App\Observers\PersonObserver;
use App\Observers\UserObserver;
use Illuminate\Auth\Notifications\ResetPassword;
use Illuminate\Database\Eloquent\Relations\Relation;
use Illuminate\Support\ServiceProvider;
use Spatie\Activitylog\Models\Activity;

class AppServiceProvider extends ServiceProvider
{
    /**
     * FQCN lookup for every `subject_type` alias that PurposeRegistry may
     * return. Single source of truth for domain-subject → model mapping,
     * consumed by the morph-map build in boot(). The `artist` class is
     * declared as a string because the Artist model is not yet landed;
     * it is safe to register the morph alias (lazily resolved).
     *
     * @var array<string, class-string|string>
     */
    private const PURPOSE_SUBJECT_FQCN = [
        'person' => Person::class,
        'user' => User::class,
        'company' => Company::class,
        'artist' => 'App\\Models\\Artist',
    ];

    public function register(): void
    {
        $this->mergeConfigFrom(
            base_path('config/form_builder/purposes.php'),
            'form_builder.purposes',
        );
        $this->mergeConfigFrom(
            base_path('config/form_builder/binding_targets.php'),
            'form_builder.binding_targets',
        );

        $this->app->singleton(PurposeRegistry::class);
        $this->app->singleton(BindingTypeRegistry::class);

        // Telescope is a dev-only debugging dashboard. Three-layer
        // defense keeps it out of production: composer `dont-discover`
        // suppresses auto-registration, this block gates manual
        // registration to local/testing, and TELESCOPE_ENABLED in .env
        // is the runtime toggle (see /dev-docs/TELESCOPE.md). The vendor
        // service provider registers routes/migrations/publishing;
        // App\Providers\TelescopeServiceProvider attaches the gate +
        // filter. Both must register for the dashboard to work.
        if ($this->app->environment('local', 'testing')) {
            $this->app->register(\Laravel\Telescope\TelescopeServiceProvider::class);
            $this->app->register(\App\Providers\TelescopeServiceProvider::class);
        }
    }

    public function boot(): void
    {
        $this->registerMorphMap();

        Person::observe(PersonObserver::class);
        User::observe(UserObserver::class);
        FormValue::observe(FormValueObserver::class);
        \App\Models\FormBuilder\FormSubmission::observe(FormSubmissionObserver::class);

        // Cascade binding / validation-rule / config rows on owner delete.
        // Children are physical state; deleted on soft-delete as well as
        // hard-delete of the owner (WS-5a bindings, WS-5b validation rules
        // + configs).
        FormField::observe(FormFieldChildTablesCascadeObserver::class);
        FormFieldLibrary::observe(FormFieldChildTablesCascadeObserver::class);

        // ARCH §31.10 — FORM-02 TAG_PICKER sync listener.
        \Illuminate\Support\Facades\Event::listen(
            FormSubmissionSubmitted::class,
            SyncTagPickerSelectionsOnSubmit::class,
        );

        // ARCH §31.1 — identity-match trigger on event_registration.
        \Illuminate\Support\Facades\Event::listen(
            FormSubmissionSubmitted::class,
            TriggerPersonIdentityMatchOnFormSubmit::class,
        );

        ResetPassword::createUrlUsing(function ($user, string $token) {
            return config('crewli.portal_url') . '/wachtwoord-resetten?token=' . $token . '&email=' . urlencode($user->email);
        });

        // Tag activity log entries with impersonation context
        Activity::saving(function (Activity $activity) {
            $request = request();

            $impersonator = $request->attributes->get('impersonator');
            $session = $request->attributes->get('impersonation_session');

            if ($impersonator && $session) {
                $properties = $activity->properties?->toArray() ?? [];
                $properties['impersonated_by'] = [
                    'user_id' => $impersonator->id,
                    'name' => $impersonator->full_name,
                    'email' => $impersonator->email,
                ];
                $properties['impersonation_session_id'] = $session->id;
                $activity->properties = collect($properties);
            }
        });
    }

    /**
     * Morph-map is built from three labelled blocks:
     *
     *   1. Domain subject types — derived from PurposeRegistry. These are
     *      the aliases allowed on `form_submissions.subject_type`.
     *   2. Non-purpose domain types — form_schemas owner_types that are
     *      not subjects (`organisation`, `event`, `user_profile`) plus
     *      domain models referenced as activity-log subjects/causers.
     *   3. Framework types — spatie/activitylog subjects.
     *
     * Sanctum's `personal_access_tokens.tokenable_type` is intentionally
     * absent (addendum Q4: framework polymorphie uses framework defaults,
     * not the domain morph-map). `MorphMapAlignmentTest` guards blocks
     * 1 and 2 against drift.
     */
    private function registerMorphMap(): void
    {
        /** @var PurposeRegistry $registry */
        $registry = $this->app->make(PurposeRegistry::class);

        // Block 1 — domain subject types, derived from PurposeRegistry.
        $domainSubjectTypes = [];
        foreach ($registry->allSubjectTypes() as $alias) {
            $fqcn = self::PURPOSE_SUBJECT_FQCN[$alias] ?? null;
            if ($fqcn === null) {
                throw new \RuntimeException(
                    "No FQCN mapping for purpose subject_type '{$alias}'. "
                    .'Add it to AppServiceProvider::PURPOSE_SUBJECT_FQCN.'
                );
            }
            $domainSubjectTypes[$alias] = $fqcn;
        }

        // Block 2 — non-purpose domain types.
        $nonPurposeDomainTypes = [
            // form_schemas owner_type candidates that are not subject_types.
            'organisation' => Organisation::class,
            'event' => Event::class,
            'user_profile' => UserProfile::class,

            // Domain models referenced as activity-log subjects/causers.
            'crowd_list' => CrowdList::class,
            'crowd_type' => CrowdType::class,
            'email_change_request' => EmailChangeRequest::class,
            'email_log' => EmailLog::class,
            'festival_section' => FestivalSection::class,
            'impersonation_session' => ImpersonationSession::class,
            'location' => Location::class,
            'mfa_backup_code' => MfaBackupCode::class,
            'mfa_email_code' => MfaEmailCode::class,
            'organisation_email_settings' => OrganisationEmailSettings::class,
            'organisation_email_template' => OrganisationEmailTemplate::class,
            'person_identity_match' => PersonIdentityMatch::class,
            'person_section_preference' => PersonSectionPreference::class,
            'person_tag' => PersonTag::class,
            'shift' => Shift::class,
            'shift_assignment' => ShiftAssignment::class,
            'shift_waitlist' => ShiftWaitlist::class,
            'time_slot' => TimeSlot::class,
            'trusted_device' => TrustedDevice::class,
            'user_invitation' => UserInvitation::class,
            'user_organisation_tag' => UserOrganisationTag::class,
            'volunteer_availability' => VolunteerAvailability::class,

            // Form-builder models used as activity-log subjects and (S2+)
            // polymorphic webhook payload subjects.
            'form_schema' => FormSchema::class,
            'form_schema_section' => FormSchemaSection::class,
            'form_field' => FormField::class,
            'form_field_library' => FormFieldLibrary::class,
            'form_submission' => FormSubmission::class,
            'form_submission_section_status' => FormSubmissionSectionStatus::class,
            'form_submission_delegation' => FormSubmissionDelegation::class,
            'form_submission_action_failure' => \App\Models\FormBuilder\FormSubmissionActionFailure::class,
            'form_value' => FormValue::class,
            'form_value_option' => FormValueOption::class,
            'form_template' => FormTemplate::class,
            'form_schema_webhook' => FormSchemaWebhook::class,
            'form_webhook_delivery' => FormWebhookDelivery::class,
        ];

        // Block 3 — framework types (spatie/activitylog). Sanctum is absent
        // on purpose; see class-level docblock.
        $frameworkTypes = [
            // activitylog causer/subject fall-back entries are not needed
            // here because every framework morph value lands on a registered
            // domain alias above. Reserved for future framework extensions.
        ];

        Relation::enforceMorphMap(array_merge(
            $domainSubjectTypes,
            $nonPurposeDomainTypes,
            $frameworkTypes,
        ));
    }
}