Merge branch 'main' into #22-vacation-calendar

# Conflicts:
#	resources/js/Pages/Dashboard.vue
#	resources/js/Shared/Layout/AppLayout.vue
#	resources/js/Shared/MainMenu.vue
#	routes/web.php

app/Architecture/Providers/EventServiceProvider.php

@@ -5,8 +5,24 @@ declare(strict_types=1);
 namespace Toby\Architecture\Providers;
 
 use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;
+use Toby\Domain\Events\VacationRequestAcceptedByAdministrative;
+use Toby\Domain\Events\VacationRequestAcceptedByTechnical;
+use Toby\Domain\Events\VacationRequestApproved;
+use Toby\Domain\Events\VacationRequestCreated;
+use Toby\Domain\Events\VacationRequestStateChanged;
+use Toby\Domain\Listeners\CreateVacationRequestActivity;
+use Toby\Domain\Listeners\HandleAcceptedByAdministrativeVacationRequest;
+use Toby\Domain\Listeners\HandleAcceptedByTechnicalVacationRequest;
+use Toby\Domain\Listeners\HandleApprovedVacationRequest;
+use Toby\Domain\Listeners\HandleCreatedVacationRequest;
 
 class EventServiceProvider extends ServiceProvider
 {
-    protected $listen = [];
+    protected $listen = [
+        VacationRequestStateChanged::class => [CreateVacationRequestActivity::class],
+        VacationRequestCreated::class => [HandleCreatedVacationRequest::class],
+        VacationRequestAcceptedByTechnical::class => [HandleAcceptedByTechnicalVacationRequest::class],
+        VacationRequestAcceptedByAdministrative::class => [HandleAcceptedByAdministrativeVacationRequest::class],
+        VacationRequestApproved::class => [HandleApprovedVacationRequest::class],
+    ];
 }

app/Architecture/Providers/ObserverServiceProvider.php

@@ -6,8 +6,10 @@ namespace Toby\Architecture\Providers;
 
 use Illuminate\Support\ServiceProvider;
 use Toby\Eloquent\Models\User;
+use Toby\Eloquent\Models\VacationRequest;
 use Toby\Eloquent\Models\YearPeriod;
 use Toby\Eloquent\Observers\UserObserver;
+use Toby\Eloquent\Observers\VacationRequestObserver;
 use Toby\Eloquent\Observers\YearPeriodObserver;
 
 class ObserverServiceProvider extends ServiceProvider
@@ -16,5 +18,6 @@ class ObserverServiceProvider extends ServiceProvider
     {
         User::observe(UserObserver::class);
         YearPeriod::observe(YearPeriodObserver::class);
+        VacationRequest::observe(VacationRequestObserver::class);
     }
 }

app/Domain/Enums/EmploymentForm.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Toby\Domain;
+namespace Toby\Domain\Enums;
 
 enum EmploymentForm: string
 {

app/Domain/Enums/Role.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Enums;
+
+enum Role: string
+{
+    case EMPLOYEE = "employee";
+    case ADMINISTRATOR = "administrator";
+    case TECHNICAL_APPROVER = "technical_approver";
+    case ADMINISTRATIVE_APPROVER = "administrative_approver";
+
+    public function label(): string
+    {
+        return __($this->value);
+    }
+
+    public static function casesToSelect(): array
+    {
+        $cases = collect(Role::cases());
+
+        return $cases->map(
+            fn(Role $enum) => [
+                "label" => $enum->label(),
+                "value" => $enum->value,
+            ],
+        )->toArray();
+    }
+}

app/Domain/Enums/VacationRequestState.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Enums;
+
+enum VacationRequestState: string
+{
+    case CREATED = "created";
+    case CANCELED = "canceled";
+    case REJECTED = "rejected";
+    case APPROVED = "approved";
+    case WAITING_FOR_TECHNICAL = "waiting_for_technical";
+    case WAITING_FOR_ADMINISTRATIVE = "waiting_for_administrative";
+    case ACCEPTED_BY_TECHNICAL = "accepted_by_technical";
+    case ACCEPTED_BY_ADMINSTRATIVE = "accepted_by_administrative";
+
+    public function label(): string
+    {
+        return __($this->value);
+    }
+
+    public static function pendingStates(): array
+    {
+        return [
+            self::CREATED,
+            self::WAITING_FOR_TECHNICAL,
+            self::WAITING_FOR_ADMINISTRATIVE,
+            self::ACCEPTED_BY_TECHNICAL,
+            self::ACCEPTED_BY_ADMINSTRATIVE,
+        ];
+    }
+
+    public static function successStates(): array
+    {
+        return [self::APPROVED];
+    }
+
+    public static function failedStates(): array
+    {
+        return [
+            self::REJECTED,
+            self::CANCELED,
+        ];
+    }
+
+    public static function filterByStatus(string $filter): array
+    {
+        return match ($filter) {
+            "pending" => VacationRequestState::pendingStates(),
+            "success" => VacationRequestState::successStates(),
+            "failed" => VacationRequestState::failedStates(),
+            default => VacationRequestState::cases(),
+        };
+    }
+}

app/Domain/Enums/VacationType.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Enums;
+
+enum VacationType: string
+{
+    case VACATION = "vacation";
+    case VACATION_ON_REQUEST = "vacation_on_request";
+    case SPECIAL_VACATION = "special_vacation";
+    case CHILDCARE_VACATION = "childcare_vacation";
+    case TRAINING_VACATION = "training_vacation";
+    case UNPAID_VACATION = "unpaid_vacation";
+    case VOLUNTEERING_VACATION = "volunteering_vacation";
+    case TIME_IN_LIEU = "time_in_lieu";
+    case SICK_VACATION = "sick_vacation";
+
+    public function label(): string
+    {
+        return __($this->value);
+    }
+
+    public static function casesToSelect(): array
+    {
+        $cases = collect(VacationType::cases());
+
+        return $cases->map(
+            fn(VacationType $enum) => [
+                "label" => $enum->label(),
+                "value" => $enum->value,
+            ],
+        )->toArray();
+    }
+}

app/Domain/Events/VacationRequestAcceptedByAdministrative.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Events;
+
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+use Toby\Eloquent\Models\VacationRequest;
+
+class VacationRequestAcceptedByAdministrative
+{
+    use Dispatchable;
+    use SerializesModels;
+
+    public function __construct(
+        public VacationRequest $vacationRequest,
+    ) {
+    }
+}

app/Domain/Events/VacationRequestAcceptedByTechnical.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Events;
+
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+use Toby\Eloquent\Models\VacationRequest;
+
+class VacationRequestAcceptedByTechnical
+{
+    use Dispatchable;
+    use SerializesModels;
+
+    public function __construct(
+        public VacationRequest $vacationRequest,
+    ) {
+    }
+}

app/Domain/Events/VacationRequestApproved.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Events;
+
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+use Toby\Eloquent\Models\VacationRequest;
+
+class VacationRequestApproved
+{
+    use Dispatchable;
+    use SerializesModels;
+
+    public function __construct(
+        public VacationRequest $vacationRequest,
+    ) {
+    }
+}

app/Domain/Events/VacationRequestCreated.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Events;
+
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+use Toby\Eloquent\Models\VacationRequest;
+
+class VacationRequestCreated
+{
+    use Dispatchable;
+    use SerializesModels;
+
+    public function __construct(
+        public VacationRequest $vacationRequest,
+    ) {
+    }
+}

app/Domain/Events/VacationRequestStateChanged.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Events;
+
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+use Toby\Domain\Enums\VacationRequestState;
+use Toby\Eloquent\Models\User;
+use Toby\Eloquent\Models\VacationRequest;
+
+class VacationRequestStateChanged
+{
+    use Dispatchable;
+    use SerializesModels;
+
+    public function __construct(
+        public VacationRequest $vacationRequest,
+        public ?VacationRequestState $from,
+        public VacationRequestState $to,
+        public ?User $user = null,
+    ) {
+    }
+}

app/Domain/Listeners/CreateVacationRequestActivity.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Listeners;
+
+use Toby\Domain\Events\VacationRequestStateChanged;
+
+class CreateVacationRequestActivity
+{
+    public function handle(VacationRequestStateChanged $event): void
+    {
+        $event->vacationRequest->activities()->create([
+            "from" => $event->from,
+            "to" => $event->to,
+            "user_id" => $event->user?->id,
+        ]);
+    }
+}

app/Domain/Listeners/HandleAcceptedByAdministrativeVacationRequest.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Listeners;
+
+use Toby\Domain\Events\VacationRequestAcceptedByAdministrative;
+use Toby\Domain\VacationRequestStateManager;
+
+class HandleAcceptedByAdministrativeVacationRequest
+{
+    public function __construct(
+        protected VacationRequestStateManager $stateManager,
+    ) {
+    }
+
+    public function handle(VacationRequestAcceptedByAdministrative $event): void
+    {
+        $this->stateManager->approve($event->vacationRequest);
+    }
+}

app/Domain/Listeners/HandleAcceptedByTechnicalVacationRequest.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Listeners;
+
+use Toby\Domain\Events\VacationRequestAcceptedByTechnical;
+use Toby\Domain\VacationRequestStateManager;
+use Toby\Domain\VacationTypeConfigRetriever;
+
+class HandleAcceptedByTechnicalVacationRequest
+{
+    public function __construct(
+        protected VacationTypeConfigRetriever $configRetriever,
+        protected VacationRequestStateManager $stateManager,
+    ) {
+    }
+
+    public function handle(VacationRequestAcceptedByTechnical $event): void
+    {
+        $vacationRequest = $event->vacationRequest;
+
+        if ($this->configRetriever->needsAdministrativeApproval($vacationRequest->type)) {
+            $this->stateManager->waitForAdministrative($vacationRequest);
+
+            return;
+        }
+
+        $this->stateManager->approve($vacationRequest);
+    }
+}

app/Domain/Listeners/HandleApprovedVacationRequest.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Listeners;
+
+use Illuminate\Support\Facades\Log;
+use Toby\Domain\Events\VacationRequestApproved;
+use Toby\Domain\VacationTypeConfigRetriever;
+
+class HandleApprovedVacationRequest
+{
+    public function __construct(
+        protected VacationTypeConfigRetriever $configRetriever,
+    ) {
+    }
+
+    public function handle(VacationRequestApproved $event): void
+    {
+        $vacationRequest = $event->vacationRequest;
+
+        Log::info("approved! {$vacationRequest->id}");
+    }
+}

app/Domain/Listeners/HandleCreatedVacationRequest.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Listeners;
+
+use Toby\Domain\Events\VacationRequestCreated;
+use Toby\Domain\VacationRequestStateManager;
+use Toby\Domain\VacationTypeConfigRetriever;
+
+class HandleCreatedVacationRequest
+{
+    public function __construct(
+        protected VacationTypeConfigRetriever $configRetriever,
+        protected VacationRequestStateManager $stateManager,
+    ) {
+    }
+
+    public function handle(VacationRequestCreated $event): void
+    {
+        $vacationRequest = $event->vacationRequest;
+
+        if ($this->configRetriever->needsTechnicalApproval($vacationRequest->type)) {
+            $this->stateManager->waitForTechnical($vacationRequest);
+
+            return;
+        }
+
+        if ($this->configRetriever->needsAdministrativeApproval($vacationRequest->type)) {
+            $this->stateManager->waitForAdministrative($vacationRequest);
+
+            return;
+        }
+
+        $this->stateManager->approve($vacationRequest);
+    }
+}

app/Domain/VacationRequestStateManager.php

@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain;
+
+use Illuminate\Contracts\Auth\Factory as Auth;
+use Illuminate\Contracts\Events\Dispatcher;
+use Toby\Domain\Enums\VacationRequestState;
+use Toby\Domain\Events\VacationRequestAcceptedByAdministrative;
+use Toby\Domain\Events\VacationRequestAcceptedByTechnical;
+use Toby\Domain\Events\VacationRequestApproved;
+use Toby\Domain\Events\VacationRequestCreated;
+use Toby\Eloquent\Models\VacationRequest;
+
+class VacationRequestStateManager
+{
+    public function __construct(
+        protected Auth $auth,
+        protected Dispatcher $dispatcher,
+    ) {
+    }
+
+    public function markAsCreated(VacationRequest $vacationRequest): void
+    {
+        $this->changeState($vacationRequest, VacationRequestState::CREATED);
+
+        $this->dispatcher->dispatch(new VacationRequestCreated($vacationRequest));
+    }
+
+    public function approve(VacationRequest $vacationRequest): void
+    {
+        $this->changeState($vacationRequest, VacationRequestState::APPROVED);
+
+        $this->dispatcher->dispatch(new VacationRequestApproved($vacationRequest));
+    }
+
+    public function reject(VacationRequest $vacationRequest): void
+    {
+        $this->changeState($vacationRequest, VacationRequestState::REJECTED);
+    }
+
+    public function cancel(VacationRequest $vacationRequest): void
+    {
+        $this->changeState($vacationRequest, VacationRequestState::CANCELED);
+    }
+
+    public function acceptAsTechnical(VacationRequest $vacationRequest): void
+    {
+        $this->changeState($vacationRequest, VacationRequestState::ACCEPTED_BY_TECHNICAL);
+
+        $this->dispatcher->dispatch(new VacationRequestAcceptedByTechnical($vacationRequest));
+    }
+
+    public function acceptAsAdministrative(VacationRequest $vacationRequest): void
+    {
+        $this->changeState($vacationRequest, VacationRequestState::ACCEPTED_BY_ADMINSTRATIVE);
+
+        $this->dispatcher->dispatch(new VacationRequestAcceptedByAdministrative($vacationRequest));
+    }
+
+    public function waitForTechnical(VacationRequest $vacationRequest): void
+    {
+        $this->changeState($vacationRequest, VacationRequestState::WAITING_FOR_TECHNICAL);
+    }
+
+    public function waitForAdministrative(VacationRequest $vacationRequest): void
+    {
+        $this->changeState($vacationRequest, VacationRequestState::WAITING_FOR_ADMINISTRATIVE);
+    }
+
+    protected function changeState(VacationRequest $vacationRequest, VacationRequestState $state): void
+    {
+        $vacationRequest->changeStateTo($state);
+    }
+}

app/Domain/VacationTypeConfigRetriever.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain;
+
+use Illuminate\Contracts\Config\Repository;
+use Toby\Domain\Enums\VacationType;
+
+class VacationTypeConfigRetriever
+{
+    public const KEY_TECHNICAL_APPROVAL = "technical_approval";
+    public const KEY_ADMINISTRATIVE_APPROVAL = "administrative_approval";
+    public const KEY_BILLABLE = "billable";
+    public const KEY_HAS_LIMIT = "has_limit";
+
+    public function __construct(
+        protected Repository $config,
+    ) {
+    }
+
+    public function needsTechnicalApproval(VacationType $type): bool
+    {
+        return $this->getConfigFor($type)[static::KEY_TECHNICAL_APPROVAL];
+    }
+
+    public function needsAdministrativeApproval(VacationType $type): bool
+    {
+        return $this->getConfigFor($type)[static::KEY_ADMINISTRATIVE_APPROVAL];
+    }
+
+    public function isBillable(VacationType $type): bool
+    {
+        return $this->getConfigFor($type)[static::KEY_BILLABLE];
+    }
+
+    public function hasLimit(VacationType $type): bool
+    {
+        return $this->getConfigFor($type)[static::KEY_HAS_LIMIT];
+    }
+
+    protected function getConfigFor(VacationType $type): array
+    {
+        return $this->config->get("vacation_types.{$type->value}");
+    }
+}

app/Domain/Validation/Rules/ApprovedVacationDaysInSameRange.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Validation\Rules;
+
+use Closure;
+use Toby\Eloquent\Models\VacationRequest;
+
+class ApprovedVacationDaysInSameRange implements VacationRequestRule
+{
+    public function check(VacationRequest $vacationRequest, Closure $next)
+    {
+        return $next($vacationRequest);
+    }
+}

app/Domain/Validation/Rules/DoesNotExceedLimitRule.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Validation\Rules;
+
+use Closure;
+use Toby\Eloquent\Models\VacationRequest;
+
+class DoesNotExceedLimitRule implements VacationRequestRule
+{
+    public function check(VacationRequest $vacationRequest, Closure $next)
+    {
+        return $next($vacationRequest);
+    }
+}

app/Domain/Validation/Rules/MinimumOneVacationDayRule.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Validation\Rules;
+
+use Closure;
+use Toby\Eloquent\Models\VacationRequest;
+
+class MinimumOneVacationDayRule implements VacationRequestRule
+{
+    public function check(VacationRequest $vacationRequest, Closure $next)
+    {
+        return $next($vacationRequest);
+    }
+}

app/Domain/Validation/Rules/PendingVacationRequestInSameRange.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Validation\Rules;
+
+use Closure;
+use Toby\Eloquent\Models\VacationRequest;
+
+class PendingVacationRequestInSameRange implements VacationRequestRule
+{
+    public function check(VacationRequest $vacationRequest, Closure $next)
+    {
+        return $next($vacationRequest);
+    }
+}

app/Domain/Validation/Rules/UsedVacationDaysInSameRange.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Validation\Rules;
+
+use Closure;
+use Toby\Eloquent\Models\VacationRequest;
+
+class UsedVacationDaysInSameRange
+{
+    public function check(VacationRequest $vacationRequest, Closure $next)
+    {
+        return $next($vacationRequest);
+    }
+}

app/Domain/Validation/Rules/VacationRequestRule.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Validation\Rules;
+
+use Closure;
+use Toby\Eloquent\Models\VacationRequest;
+
+interface VacationRequestRule
+{
+    public function check(VacationRequest $vacationRequest, Closure $next);
+}

app/Domain/Validation/VacationRequestValidator.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Validation;
+
+use Illuminate\Pipeline\Pipeline;
+use Toby\Domain\Validation\Rules\ApprovedVacationDaysInSameRange;
+use Toby\Domain\Validation\Rules\DoesNotExceedLimitRule;
+use Toby\Domain\Validation\Rules\MinimumOneVacationDayRule;
+use Toby\Domain\Validation\Rules\PendingVacationRequestInSameRange;
+use Toby\Eloquent\Models\VacationRequest;
+
+class VacationRequestValidator
+{
+    protected array $rules = [
+        MinimumOneVacationDayRule::class,
+        DoesNotExceedLimitRule::class,
+        PendingVacationRequestInSameRange::class,
+        ApprovedVacationDaysInSameRange::class,
+    ];
+
+    public function __construct(
+        protected Pipeline $pipeline,
+    ) {
+    }
+
+    public function validate(VacationRequest $vacationRequest): void
+    {
+        $this->pipeline
+            ->send($vacationRequest)
+            ->through($this->rules)
+            ->via("check");
+    }
+}

app/Eloquent/Models/User.php

@@ -13,7 +13,8 @@ use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\Notifiable;
 use Illuminate\Support\Carbon;
 use Illuminate\Support\Collection;
-use Toby\Domain\EmploymentForm;
+use Toby\Domain\Enums\EmploymentForm;
+use Toby\Domain\Enums\Role;
 
 /**
  * @property int $id
@@ -21,9 +22,11 @@ use Toby\Domain\EmploymentForm;
  * @property string $last_name
  * @property string $email
  * @property string $avatar
+ * @property Role $role
  * @property EmploymentForm $employment_form
  * @property Carbon $employment_date
  * @property Collection $vacationLimits
+ * @property Collection $vacationRequests
  */
 class User extends Authenticatable
 {
@@ -34,6 +37,7 @@ class User extends Authenticatable
     protected $guarded = [];
 
     protected $casts = [
+        "role" => Role::class,
         "employment_form" => EmploymentForm::class,
         "employment_date" => "date",
     ];
@@ -47,6 +51,11 @@ class User extends Authenticatable
         return $this->hasMany(VacationLimit::class);
     }
 
+    public function vacationRequests(): HasMany
+    {
+        return $this->hasMany(VacationRequest::class);
+    }
+
     public function scopeSearch(Builder $query, ?string $text): Builder
     {
         if ($text === null) {
@@ -71,6 +80,11 @@ class User extends Authenticatable
         return "{$this->first_name} {$this->last_name}";
     }
 
+    public function hasRole(Role $role): bool
+    {
+        return $this->role === $role;
+    }
+
     protected static function newFactory(): UserFactory
     {
         return UserFactory::new();

app/Eloquent/Models/VacationRequest.php

@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Eloquent\Models;
+
+use Database\Factories\VacationRequestFactory;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Collection;
+use Toby\Domain\Enums\VacationRequestState;
+use Toby\Domain\Enums\VacationType;
+
+/**
+ * @property int $id
+ * @property VacationType $type
+ * @property VacationRequestState $state
+ * @property Carbon $from
+ * @property Carbon $to
+ * @property string $comment
+ * @property User $user
+ * @property Collection $activities
+ */
+class VacationRequest extends Model
+{
+    use HasFactory;
+
+    protected $guarded = [];
+
+    protected $casts = [
+        "type" => VacationType::class,
+        "state" => VacationRequestState::class,
+        "from" => "date",
+        "to" => "date",
+    ];
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function activities(): HasMany
+    {
+        return $this->hasMany(VacationRequestActivity::class);
+    }
+
+    public function changeStateTo(VacationRequestState $state): void
+    {
+        $this->state = $state;
+
+        $this->save();
+    }
+
+    public function scopeStates(Builder $query, array $states): Builder
+    {
+        return $query->whereIn("state", $states);
+    }
+
+    protected static function newFactory(): VacationRequestFactory
+    {
+        return VacationRequestFactory::new();
+    }
+}

app/Eloquent/Models/VacationRequestActivity.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Eloquent\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Toby\Domain\Enums\VacationRequestState;
+
+/**
+ * @property int $id
+ * @property VacationRequest $vacationRequest
+ * @property ?User $user
+ * @property ?VacationRequestState $from
+ * @property VacationRequestState $to
+ */
+class VacationRequestActivity extends Model
+{
+    protected $guarded = [];
+
+    protected $casts = [
+        "from" => VacationRequestState::class,
+        "to" => VacationRequestState::class,
+    ];
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function vacationRequest(): BelongsTo
+    {
+        return $this->belongsTo(VacationRequest::class);
+    }
+}

app/Eloquent/Observers/VacationRequestObserver.php

@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Eloquent\Observers;
+
+use Illuminate\Contracts\Auth\Factory as Auth;
+use Illuminate\Events\Dispatcher;
+use Toby\Domain\Enums\VacationRequestState;
+use Toby\Domain\Events\VacationRequestStateChanged;
+use Toby\Eloquent\Models\User;
+use Toby\Eloquent\Models\VacationRequest;
+
+class VacationRequestObserver
+{
+    public function __construct(
+        protected Auth $auth,
+        protected Dispatcher $dispatcher,
+    ) {
+    }
+
+    public function creating(VacationRequest $vacationRequest): void
+    {
+        $year = $vacationRequest->from->year;
+
+        $vacationRequestNumber = $vacationRequest->user->vacationRequests()
+            ->whereYear("from", $year)
+            ->count() + 1;
+
+        $vacationRequest->name = "{$vacationRequestNumber}/${year}";
+    }
+
+    public function saved(VacationRequest $vacationRequest): void
+    {
+        if ($vacationRequest->isDirty("state")) {
+            $previousState = $vacationRequest->getOriginal("state");
+
+            $this->fireStateChangedEvent($vacationRequest, $previousState, $vacationRequest->state);
+        }
+    }
+
+    protected function fireStateChangedEvent(
+        VacationRequest $vacationRequest,
+        ?VacationRequestState $from,
+        VacationRequestState $to,
+    ): void {
+        $event = new VacationRequestStateChanged($vacationRequest, $from, $to, $this->getAuthUser());
+
+        $this->dispatcher->dispatch($event);
+    }
+
+    protected function getAuthUser(): ?User
+    {
+        /** @var User $user */
+        $user = $this->auth->guard()->user();
+
+        return $user;
+    }
+}

app/Infrastructure/Http/Controllers/UserController.php

@@ -7,7 +7,8 @@ namespace Toby\Infrastructure\Http\Controllers;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 use Inertia\Response;
-use Toby\Domain\EmploymentForm;
+use Toby\Domain\Enums\EmploymentForm;
+use Toby\Domain\Enums\Role;
 use Toby\Eloquent\Models\User;
 use Toby\Infrastructure\Http\Requests\UserRequest;
 use Toby\Infrastructure\Http\Resources\UserFormDataResource;
@@ -35,6 +36,7 @@ class UserController extends Controller
     {
         return inertia("Users/Create", [
             "employmentForms" => EmploymentForm::casesToSelect(),
+            "roles" => Role::casesToSelect(),
         ]);
     }
 
@@ -52,6 +54,7 @@ class UserController extends Controller
         return inertia("Users/Edit", [
             "user" => new UserFormDataResource($user),
             "employmentForms" => EmploymentForm::casesToSelect(),
+            "roles" => Role::casesToSelect(),
         ]);
     }
 

app/Infrastructure/Http/Controllers/VacationRequestController.php

@@ -0,0 +1,102 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Infrastructure\Http\Controllers;
+
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Inertia\Response;
+use Toby\Domain\Enums\VacationRequestState;
+use Toby\Domain\Enums\VacationType;
+use Toby\Domain\VacationRequestStateManager;
+use Toby\Domain\Validation\VacationRequestValidator;
+use Toby\Eloquent\Models\VacationRequest;
+use Toby\Infrastructure\Http\Requests\VacationRequestRequest;
+use Toby\Infrastructure\Http\Resources\VacationRequestActivityResource;
+use Toby\Infrastructure\Http\Resources\VacationRequestResource;
+
+class VacationRequestController extends Controller
+{
+    public function index(Request $request): Response
+    {
+        $vacationRequests = $request->user()
+            ->vacationRequests()
+            ->latest()
+            ->states(VacationRequestState::filterByStatus($request->query("status", "all")))
+            ->paginate();
+
+        return inertia("VacationRequest/Index", [
+            "requests" => VacationRequestResource::collection($vacationRequests),
+            "filters" => $request->only("status"),
+        ]);
+    }
+
+    public function show(VacationRequest $vacationRequest): Response
+    {
+        return inertia("VacationRequest/Show", [
+            "request" => new VacationRequestResource($vacationRequest),
+            "activities" => VacationRequestActivityResource::collection($vacationRequest->activities),
+        ]);
+    }
+
+    public function create(): Response
+    {
+        return inertia("VacationRequest/Create", [
+            "vacationTypes" => VacationType::casesToSelect(),
+        ]);
+    }
+
+    public function store(
+        VacationRequestRequest $request,
+        VacationRequestValidator $vacationRequestValidator,
+        VacationRequestStateManager $stateManager,
+    ): RedirectResponse {
+        /** @var VacationRequest $vacationRequest */
+        $vacationRequest = $request->user()->vacationRequests()->make($request->data());
+
+        $vacationRequestValidator->validate($vacationRequest);
+
+        $vacationRequest->save();
+        $stateManager->markAsCreated($vacationRequest);
+
+        return redirect()
+            ->route("vacation.requests.index");
+    }
+
+    public function reject(
+        VacationRequest $vacationRequest,
+        VacationRequestStateManager $stateManager,
+    ): RedirectResponse {
+        $stateManager->reject($vacationRequest);
+
+        return redirect()->back();
+    }
+
+    public function cancel(
+        VacationRequest $vacationRequest,
+        VacationRequestStateManager $stateManager,
+    ): RedirectResponse {
+        $stateManager->cancel($vacationRequest);
+
+        return redirect()->back();
+    }
+
+    public function acceptAsTechnical(
+        VacationRequest $vacationRequest,
+        VacationRequestStateManager $stateManager,
+    ): RedirectResponse {
+        $stateManager->acceptAsTechnical($vacationRequest);
+
+        return redirect()->back();
+    }
+
+    public function acceptAsAdministrative(
+        VacationRequest $vacationRequest,
+        VacationRequestStateManager $stateManager,
+    ): RedirectResponse {
+        $stateManager->acceptAsAdministrative($vacationRequest);
+
+        return redirect()->back();
+    }
+}

app/Infrastructure/Http/Kernel.php

@@ -23,6 +23,7 @@ use Illuminate\Routing\Middleware\ValidateSignature;
 use Illuminate\Session\Middleware\AuthenticateSession;
 use Illuminate\Session\Middleware\StartSession;
 use Illuminate\View\Middleware\ShareErrorsFromSession;
+use Laravel\Sanctum\Http\Middleware\EnsureFrontendRequestsAreStateful;
 use Toby\Infrastructure\Http\Middleware\Authenticate;
 use Toby\Infrastructure\Http\Middleware\HandleInertiaRequests;
 use Toby\Infrastructure\Http\Middleware\RedirectIfAuthenticated;
@@ -52,6 +53,7 @@ class Kernel extends HttpKernel
             HandleInertiaRequests::class,
         ],
         "api" => [
+            EnsureFrontendRequestsAreStateful::class,
             "throttle:api",
             SubstituteBindings::class,
         ],

app/Infrastructure/Http/Requests/UserRequest.php

@@ -7,7 +7,8 @@ namespace Toby\Infrastructure\Http\Requests;
 use Illuminate\Foundation\Http\FormRequest;
 use Illuminate\Validation\Rule;
 use Illuminate\Validation\Rules\Enum;
-use Toby\Domain\EmploymentForm;
+use Toby\Domain\Enums\EmploymentForm;
+use Toby\Domain\Enums\Role;
 
 class UserRequest extends FormRequest
 {
@@ -17,6 +18,7 @@ class UserRequest extends FormRequest
             "firstName" => ["required", "min:3", "max:80"],
             "lastName" => ["required", "min:3", "max:80"],
             "email" => ["required", "email", Rule::unique("users", "email")->ignore($this->user)],
+            "role" => ["required", new Enum(Role::class)],
             "employmentForm" => ["required", new Enum(EmploymentForm::class)],
             "employmentDate" => ["required", "date_format:Y-m-d"],
         ];
@@ -28,6 +30,7 @@ class UserRequest extends FormRequest
             "first_name" => $this->get("firstName"),
             "last_name" => $this->get("lastName"),
             "email" => $this->get("email"),
+            "role" => $this->get("role"),
             "employment_form" => $this->get("employmentForm"),
             "employment_date" => $this->get("employmentDate"),
         ];

app/Infrastructure/Http/Requests/VacationRequestRequest.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Infrastructure\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rules\Enum;
+use Toby\Domain\Enums\VacationType;
+use Toby\Infrastructure\Http\Rules\YearPeriodExists;
+
+class VacationRequestRequest extends FormRequest
+{
+    public function rules(): array
+    {
+        return [
+            "type" => ["required", new Enum(VacationType::class)],
+            "from" => ["required", "date_format:Y-m-d", new YearPeriodExists()],
+            "to" => ["required", "date_format:Y-m-d", new YearPeriodExists()],
+            "comment" => ["nullable"],
+        ];
+    }
+
+    public function data(): array
+    {
+        return [
+            "type" => $this->get("type"),
+            "from" => $this->get("from"),
+            "to" => $this->get("to"),
+            "comment" => $this->get("comment"),
+        ];
+    }
+}

app/Infrastructure/Http/Resources/HolidayResource.php

@@ -15,6 +15,7 @@ class HolidayResource extends JsonResource
         return [
             "id" => $this->id,
             "name" => $this->name,
+            "date" => $this->date->toDateString(),
             "displayDate" => $this->date->toDisplayString(),
             "dayOfWeek" => $this->date->dayName,
         ];

app/Infrastructure/Http/Resources/UserFormDataResource.php

@@ -17,8 +17,9 @@ class UserFormDataResource extends JsonResource
             "firstName" => $this->first_name,
             "lastName" => $this->last_name,
             "email" => $this->email,
+            "role" => $this->role,
             "employmentForm" => $this->employment_form,
-            "employmentDate" => $this->employment_date,
+            "employmentDate" => $this->employment_date->toDateString(),
         ];
     }
 }

app/Infrastructure/Http/Resources/UserResource.php

@@ -16,7 +16,7 @@ class UserResource extends JsonResource
             "id" => $this->id,
             "name" => $this->fullName,
             "email" => $this->email,
-            "role" => "Human Resources Manager",
+            "role" => $this->role->label(),
             "avatar" => asset($this->avatar),
             "deleted" => $this->trashed(),
             "employmentForm" => $this->employment_form->label(),

app/Infrastructure/Http/Resources/VacationRequestActivityResource.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Infrastructure\Http\Resources;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class VacationRequestActivityResource extends JsonResource
+{
+    public static $wrap = null;
+
+    public function toArray($request): array
+    {
+        return [
+            "date" => $this->created_at->toDisplayString(),
+            "who" => $this->user ? $this->user->fullName : __("System"),
+            "to" => $this->to->label(),
+        ];
+    }
+}

app/Infrastructure/Http/Resources/VacationRequestResource.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Infrastructure\Http\Resources;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class VacationRequestResource extends JsonResource
+{
+    public static $wrap = null;
+
+    public function toArray($request): array
+    {
+        return [
+            "id" => $this->id,
+            "name" => $this->name,
+            "user" => new UserResource($this->user),
+            "type" => $this->type->label(),
+            "state" => $this->state->label(),
+            "from" => $this->from->toDisplayString(),
+            "to" => $this->to->toDisplayString(),
+            "comment" => $this->comment,
+        ];
+    }
+}