<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class IssueRelationship extends Model
{
    use HasFactory;

    public const TYPE_BLOCKS = 'blocks';
    public const TYPE_BLOCKED_BY = 'blocked_by';
    public const TYPE_RELATED_TO = 'related_to';
    public const TYPE_DUPLICATE_OF = 'duplicate_of';

    protected $fillable = [
        'issue_id',
        'related_issue_id',
        'relationship_type',
    ];

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

    public function relatedIssue(): BelongsTo
    {
        return $this->belongsTo(Issue::class, 'related_issue_id');
    }

    public function getRelationshipLabelAttribute(): string
    {
        return match($this->relationship_type) {
            self::TYPE_BLOCKS => __('Blocks'),
            self::TYPE_BLOCKED_BY => __('Blocked by'),
            self::TYPE_RELATED_TO => __('Related to'),
            self::TYPE_DUPLICATE_OF => __('Duplicate of'),
            default => $this->relationship_type,
        };
    }
}