<?php

declare(strict_types=1);

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Concerns\HasUlids;
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\Database\Eloquent\SoftDeletes;

final class Shift extends Model
{
    use HasFactory;
    use HasUlids;
    use SoftDeletes;

    protected $fillable = [
        'festival_section_id',
        'time_slot_id',
        'location_id',
        'title',
        'description',
        'instructions',
        'coordinator_notes',
        'slots_total',
        'slots_open_for_claiming',
        'is_lead_role',
        'report_time',
        'actual_start_time',
        'actual_end_time',
        'end_date',
        'allow_overlap',
        'assigned_crew_id',
        'events_during_shift',
        'status',
    ];

    protected function casts(): array
    {
        return [
            'is_lead_role' => 'boolean',
            'allow_overlap' => 'boolean',
            'events_during_shift' => 'array',
            'slots_total' => 'integer',
            'slots_open_for_claiming' => 'integer',
        ];
    }

    public function festivalSection(): BelongsTo
    {
        return $this->belongsTo(FestivalSection::class);
    }

    public function timeSlot(): BelongsTo
    {
        return $this->belongsTo(TimeSlot::class);
    }

    public function location(): BelongsTo
    {
        return $this->belongsTo(Location::class);
    }

    public function assignedCrew(): BelongsTo
    {
        return $this->belongsTo(User::class, 'assigned_crew_id');
    }

    public function shiftAssignments(): HasMany
    {
        return $this->hasMany(ShiftAssignment::class);
    }

    public function waitlist(): HasMany
    {
        return $this->hasMany(ShiftWaitlist::class);
    }

    protected function effectiveStartTime(): Attribute
    {
        return Attribute::get(fn () => $this->actual_start_time ?? $this->timeSlot?->start_time);
    }

    protected function effectiveEndTime(): Attribute
    {
        return Attribute::get(fn () => $this->actual_end_time ?? $this->timeSlot?->end_time);
    }

    protected function filledSlots(): Attribute
    {
        return Attribute::get(fn () => $this->shiftAssignments()->where('status', 'approved')->count());
    }

    protected function fillRate(): Attribute
    {
        return Attribute::get(function () {
            if ($this->slots_total === 0) {
                return 0;
            }

            return round($this->filled_slots / $this->slots_total, 2);
        });
    }

    public function scopeOpen(Builder $query): Builder
    {
        return $query->where('status', 'open');
    }

    public function scopeDraft(Builder $query): Builder
    {
        return $query->where('status', 'draft');
    }

    public function scopeFull(Builder $query): Builder
    {
        return $query->where('status', 'full');
    }
}