<?php

namespace Modules\ProjectManagement\Models;

use App\Models\User;
use App\Traits\HasPublicIdentifier;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasOne;
use Illuminate\Database\Eloquent\SoftDeletes;
use Modules\ApprovalWorkflow\Traits\HasApprovable;
use Modules\ProjectManagement\Enums\ReportStatus;

class WeeklyStatusReport extends Model
{
    use HasPublicIdentifier, SoftDeletes, HasApprovable;

    protected $fillable = [
        'project_id',
        'period_start',
        'period_end',
        'status',
        'narrative_status',
        'narrative_weather',
        'narrative_compliance',
        'submitted_by',
        'approved_by',
    ];

    protected function casts(): array
    {
        return [
            'status' => ReportStatus::class,
            'period_start' => 'date',
            'period_end' => 'date',
        ];
    }

    // --- Relationships ---

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

    public function workforceMetric(): HasOne
    {
        return $this->hasOne(WorkforceMetric::class);
    }

    public function hseRecord(): HasOne
    {
        return $this->hasOne(HseRecord::class);
    }

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

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

    // --- State Machine ---

    public function transitionTo(ReportStatus $newStatus): void
    {
        if (!in_array($newStatus, $this->status->allowedTransitions())) {
            throw new \InvalidArgumentException(
                "Cannot transition report from {$this->status->label()} to {$newStatus->label()}"
            );
        }

        $this->update(['status' => $newStatus]);
    }

    // --- Scopes ---

    public function scopeStatus($query, ReportStatus $status)
    {
        return $query->where('status', $status);
    }

    public function scopeApproved($query)
    {
        return $query->where('status', ReportStatus::Approved);
    }

    // --- Accessors ---

    public function getPeriodLabelAttribute(): string
    {
        return $this->period_start->format('M d') . ' – ' . $this->period_end->format('M d, Y');
    }

    public function getDaysInPeriodAttribute(): int
    {
        return $this->period_start->diffInDays($this->period_end) + 1;
    }
}