<?php

namespace App\Models\Sppm;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class PetugasPermohonan extends Model
{
    protected $connection = 'sppm';
    protected $table = 'petugas_permohonan';
    protected $guarded = [];

    /**
     * Petugas berstatus 'assigned' untuk sesuatu DUN. Padanan DUN melalui
     * dun_id permohonan atau dun pusat mengundi penempatan.
     */
    public function scopeAssignedUntukDun($query, int $dunId)
    {
        return $query->where('status', 'assigned')
            ->where(function ($q) use ($dunId) {
                $q->where('dun_id', $dunId)
                    ->orWhereHas('assignments.pusatMengundi', fn ($qq) => $qq->where('dun_id', $dunId));
            });
    }

    public function dun(): BelongsTo
    {
        return $this->belongsTo(Dun::class, 'dun_id');
    }

    public function assignments(): HasMany
    {
        return $this->hasMany(PetugasAssignment::class, 'permohonan_id');
    }

    /**
     * Penempatan utama petugas (urutan terendah).
     */
    public function assignmentUtama(): ?PetugasAssignment
    {
        if ($this->relationLoaded('assignments')) {
            return $this->assignments->sortBy('urutan')->first();
        }

        return $this->assignments()
            ->with(['pusatMengundi', 'saluran', 'jawatan'])
            ->orderBy('urutan')
            ->first();
    }

    /**
     * Maklumat penempatan untuk paparan: pusat mengundi, saluran, jawatan.
     * Diambil daripada petugas_assignments; fallback kepada medan permohonan.
     */
    public function butiranPenempatan(): array
    {
        $assignment = $this->assignmentUtama();

        $pusatMengundi = $assignment?->pusatMengundi
            ?? ($this->pusat_mengundi_id ? PusatMengundi::find($this->pusat_mengundi_id) : null);

        $saluran = $assignment?->saluran
            ?? ($this->assigned_saluran_id ? Saluran::find($this->assigned_saluran_id) : null);

        $jawatan = $assignment?->jawatan
            ?? ($this->jawatan_id ? JawatanTetapan::find($this->jawatan_id) : null);

        return [
            'pusat_mengundi' => $pusatMengundi?->nama ?? '-',
            'saluran' => $saluran ? 'Saluran ' . $saluran->nombor_saluran : '-',
            'jawatan' => $jawatan?->nama ?? '-',
        ];
    }
}