<?php

declare(strict_types=1);

namespace Tests\Feature\Shift;

use App\Models\CrowdType;
use App\Models\Event;
use App\Models\FestivalSection;
use App\Models\Organisation;
use App\Models\Person;
use App\Models\Shift;
use App\Models\ShiftAssignment;
use App\Models\TimeSlot;
use App\Models\User;
use Database\Seeders\RoleSeeder;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Laravel\Sanctum\Sanctum;
use Tests\TestCase;

class ShiftTest extends TestCase
{
    use RefreshDatabase;

    private User $orgAdmin;
    private User $outsider;
    private Organisation $organisation;
    private Organisation $otherOrganisation;
    private Event $event;
    private FestivalSection $section;
    private TimeSlot $timeSlot;
    private CrowdType $crowdType;

    protected function setUp(): void
    {
        parent::setUp();
        $this->seed(RoleSeeder::class);

        $this->organisation = Organisation::factory()->create();
        $this->otherOrganisation = Organisation::factory()->create();

        $this->orgAdmin = User::factory()->create();
        $this->organisation->users()->attach($this->orgAdmin, ['role' => 'org_admin']);

        $this->outsider = User::factory()->create();
        $this->otherOrganisation->users()->attach($this->outsider, ['role' => 'org_admin']);

        $this->event = Event::factory()->create(['organisation_id' => $this->organisation->id]);
        $this->section = FestivalSection::factory()->create([
            'event_id' => $this->event->id,
            'crew_auto_accepts' => false,
        ]);
        $this->timeSlot = TimeSlot::factory()->create(['event_id' => $this->event->id]);
        $this->crowdType = CrowdType::factory()->systemType('VOLUNTEER')->create([
            'organisation_id' => $this->organisation->id,
        ]);
    }

    public function test_index_returns_shifts_for_section(): void
    {
        Shift::factory()->count(3)->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->getJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts");

        $response->assertOk();
        $this->assertCount(3, $response->json('data'));
    }

    public function test_store_creates_shift(): void
    {
        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts", [
            'time_slot_id' => $this->timeSlot->id,
            'title' => 'Tapper',
            'slots_total' => 4,
            'slots_open_for_claiming' => 3,
        ]);

        $response->assertCreated()
            ->assertJson(['data' => ['title' => 'Tapper', 'slots_total' => 4]]);

        $this->assertDatabaseHas('shifts', [
            'festival_section_id' => $this->section->id,
            'title' => 'Tapper',
        ]);
    }

    public function test_update_shift(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
            'title' => 'Tapper',
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->putJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}", [
            'title' => 'Barhoofd',
            'slots_total' => 1,
        ]);

        $response->assertOk()
            ->assertJson(['data' => ['title' => 'Barhoofd', 'slots_total' => 1]]);
    }

    public function test_update_shift_with_valid_time_slot_id(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
        ]);

        $newTimeSlot = TimeSlot::factory()->create(['event_id' => $this->event->id]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->putJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}", [
            'time_slot_id' => $newTimeSlot->id,
        ]);

        $response->assertOk()
            ->assertJsonPath('data.time_slot_id', $newTimeSlot->id)
            ->assertJsonPath('data.time_slot.id', $newTimeSlot->id)
            ->assertJsonPath('data.time_slot.name', $newTimeSlot->name);
    }

    public function test_update_shift_with_other_org_time_slot_returns_422(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
        ]);

        $otherEvent = Event::factory()->create(['organisation_id' => $this->otherOrganisation->id]);
        $otherTimeSlot = TimeSlot::factory()->create(['event_id' => $otherEvent->id]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->putJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}", [
            'time_slot_id' => $otherTimeSlot->id,
        ]);

        $response->assertUnprocessable()
            ->assertJsonValidationErrors('time_slot_id');
    }

    public function test_update_shift_response_includes_time_slot_object(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
            'title' => 'Runner',
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->putJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}", [
            'title' => 'Stage Manager',
        ]);

        $response->assertOk()
            ->assertJsonStructure(['data' => [
                'time_slot_id',
                'time_slot' => ['id', 'name', 'date', 'start_time', 'end_time'],
            ]]);
    }

    public function test_store_response_includes_time_slot_object(): void
    {
        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts", [
            'time_slot_id' => $this->timeSlot->id,
            'title' => 'Tapper',
            'slots_total' => 4,
            'slots_open_for_claiming' => 3,
        ]);

        $response->assertCreated()
            ->assertJsonStructure(['data' => [
                'time_slot_id',
                'time_slot' => ['id', 'name', 'date', 'start_time', 'end_time'],
            ]]);
    }

    public function test_destroy_soft_deletes_shift(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->deleteJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}");

        $response->assertNoContent();
        $this->assertSoftDeleted('shifts', ['id' => $shift->id]);
    }

    public function test_store_missing_time_slot_id_returns_422(): void
    {
        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts", [
            'title' => 'Tapper',
            'slots_total' => 4,
            'slots_open_for_claiming' => 0,
        ]);

        $response->assertUnprocessable()
            ->assertJsonValidationErrors('time_slot_id');
    }

    public function test_update_cross_org_returns_403(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
        ]);

        Sanctum::actingAs($this->outsider);

        $response = $this->putJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}", [
            'title' => 'Hacked',
        ]);

        $response->assertForbidden();
    }

    public function test_destroy_cross_org_returns_403(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
        ]);

        Sanctum::actingAs($this->outsider);

        $response = $this->deleteJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}");

        $response->assertForbidden();
    }

    public function test_assign_creates_shift_assignment(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
            'slots_total' => 4,
            'status' => 'open',
        ]);

        $person = Person::factory()->create([
            'event_id' => $this->event->id,
            'crowd_type_id' => $this->crowdType->id,
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}/assign", [
            'person_id' => $person->id,
        ]);

        $response->assertCreated()
            ->assertJsonPath('data.person_id', $person->id)
            ->assertJsonPath('data.status', 'approved');

        $this->assertDatabaseHas('shift_assignments', [
            'shift_id' => $shift->id,
            'person_id' => $person->id,
            'status' => 'approved',
        ]);
    }

    public function test_assign_same_person_same_timeslot_no_overlap_returns_422(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
            'slots_total' => 4,
            'allow_overlap' => false,
            'status' => 'open',
        ]);

        $person = Person::factory()->create([
            'event_id' => $this->event->id,
            'crowd_type_id' => $this->crowdType->id,
        ]);

        // Create existing assignment for this person + time_slot
        ShiftAssignment::create([
            'shift_id' => $shift->id,
            'person_id' => $person->id,
            'time_slot_id' => $this->timeSlot->id,
            'status' => 'approved',
            'auto_approved' => false,
        ]);

        // Try to assign again via a different shift with the same time_slot
        $shift2 = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
            'slots_total' => 4,
            'allow_overlap' => false,
            'status' => 'open',
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift2->id}/assign", [
            'person_id' => $person->id,
        ]);

        $response->assertUnprocessable();
    }

    public function test_assign_same_person_same_timeslot_with_overlap_returns_201(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
            'slots_total' => 4,
            'allow_overlap' => true,
            'status' => 'open',
        ]);

        $person = Person::factory()->create([
            'event_id' => $this->event->id,
            'crowd_type_id' => $this->crowdType->id,
        ]);

        // Create existing assignment
        ShiftAssignment::create([
            'shift_id' => $shift->id,
            'person_id' => $person->id,
            'time_slot_id' => $this->timeSlot->id,
            'status' => 'approved',
            'auto_approved' => false,
        ]);

        // New shift with allow_overlap = true
        $shift2 = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
            'slots_total' => 4,
            'allow_overlap' => true,
            'status' => 'open',
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift2->id}/assign", [
            'person_id' => $person->id,
        ]);

        $response->assertCreated();
    }

    public function test_assign_full_shift_allows_overbooking(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
            'slots_total' => 1,
            'status' => 'open',
        ]);

        $person1 = Person::factory()->create([
            'event_id' => $this->event->id,
            'crowd_type_id' => $this->crowdType->id,
        ]);
        $person2 = Person::factory()->create([
            'event_id' => $this->event->id,
            'crowd_type_id' => $this->crowdType->id,
        ]);

        // Fill the only slot
        ShiftAssignment::create([
            'shift_id' => $shift->id,
            'person_id' => $person1->id,
            'time_slot_id' => $this->timeSlot->id,
            'status' => 'approved',
            'auto_approved' => false,
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}/assign", [
            'person_id' => $person2->id,
        ]);

        $response->assertCreated();

        $this->assertDatabaseHas('shift_assignments', [
            'shift_id' => $shift->id,
            'person_id' => $person2->id,
            'status' => 'approved',
        ]);
    }

    public function test_claim_no_claimable_slots_returns_422(): void
    {
        $shift = Shift::factory()->create([
            'festival_section_id' => $this->section->id,
            'time_slot_id' => $this->timeSlot->id,
            'slots_total' => 4,
            'slots_open_for_claiming' => 0,
        ]);

        $person = Person::factory()->create([
            'event_id' => $this->event->id,
            'crowd_type_id' => $this->crowdType->id,
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts/{$shift->id}/claim", [
            'person_id' => $person->id,
        ]);

        $response->assertUnprocessable();
    }

    public function test_unauthenticated_returns_401(): void
    {
        $response = $this->getJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts");

        $response->assertUnauthorized();
    }

    public function test_cross_org_returns_403(): void
    {
        Sanctum::actingAs($this->outsider);

        $response = $this->getJson("/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts");

        $response->assertForbidden();
    }

    public function test_create_shift_with_parent_festival_time_slot_succeeds(): void
    {
        $festival = Event::factory()->create([
            'organisation_id' => $this->organisation->id,
            'event_type' => 'festival',
        ]);
        $subEvent = Event::factory()->create([
            'organisation_id' => $this->organisation->id,
            'parent_event_id' => $festival->id,
        ]);
        $festivalSlot = TimeSlot::factory()->create(['event_id' => $festival->id]);
        $subSection = FestivalSection::factory()->create(['event_id' => $subEvent->id, 'type' => 'standard']);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson(
            "/api/v1/organisations/{$this->organisation->id}/events/{$subEvent->id}/sections/{$subSection->id}/shifts",
            [
                'time_slot_id' => $festivalSlot->id,
                'title' => 'Opbouw shift',
                'slots_total' => 5,
                'slots_open_for_claiming' => 0,
            ],
        );

        $response->assertCreated();
    }

    public function test_create_shift_in_cross_event_section_with_child_time_slot_succeeds(): void
    {
        $festival = Event::factory()->create([
            'organisation_id' => $this->organisation->id,
            'event_type' => 'festival',
        ]);
        $subEvent = Event::factory()->create([
            'organisation_id' => $this->organisation->id,
            'parent_event_id' => $festival->id,
        ]);
        $subEventSlot = TimeSlot::factory()->create(['event_id' => $subEvent->id]);
        $crossSection = FestivalSection::factory()->create([
            'event_id' => $festival->id,
            'type' => 'cross_event',
        ]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson(
            "/api/v1/organisations/{$this->organisation->id}/events/{$festival->id}/sections/{$crossSection->id}/shifts",
            [
                'time_slot_id' => $subEventSlot->id,
                'title' => 'EHBO Post',
                'slots_total' => 3,
                'slots_open_for_claiming' => 2,
            ],
        );

        $response->assertCreated();
    }

    public function test_create_shift_with_unrelated_event_time_slot_fails_422(): void
    {
        $unrelatedEvent = Event::factory()->create([
            'organisation_id' => $this->organisation->id,
        ]);
        $unrelatedSlot = TimeSlot::factory()->create(['event_id' => $unrelatedEvent->id]);

        Sanctum::actingAs($this->orgAdmin);

        $response = $this->postJson(
            "/api/v1/organisations/{$this->organisation->id}/events/{$this->event->id}/sections/{$this->section->id}/shifts",
            [
                'time_slot_id' => $unrelatedSlot->id,
                'title' => 'Invalid shift',
                'slots_total' => 1,
                'slots_open_for_claiming' => 0,
            ],
        );

        $response->assertUnprocessable()
            ->assertJsonValidationErrors('time_slot_id');
    }
}