Initial commit

app/Models/IssueRelationship.php

@@ -0,0 +1,44 @@
+<?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,
+        };
+    }
+}