refactor: replace custom CRM with Monica fork

app/Models/Relationship/Relationship.php

@@ -0,0 +1,99 @@
+<?php
+
+namespace App\Models\Relationship;
+
+use App\Traits\HasUuid;
+use App\Models\Account\Account;
+use App\Models\Contact\Contact;
+use App\Models\ModelBinding as Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+/**
+ * A relationship defines relations between contacts.
+ */
+class Relationship extends Model
+{
+    use HasUuid;
+
+    /**
+     * All of the relationships to be touched.
+     *
+     * @var array
+     */
+    protected $touches = [
+        'contactIs',
+        'ofContact',
+    ];
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<string>
+     */
+    protected $fillable = [
+        'account_id',
+        'contact_is',
+        'of_contact',
+        'relationship_type_id',
+    ];
+
+    /**
+     * Get the account record associated with the relationship.
+     *
+     * @return BelongsTo
+     */
+    public function account()
+    {
+        return $this->belongsTo(Account::class);
+    }
+
+    /**
+     * Get the contact record associated with the relationship.
+     *
+     * @return BelongsTo
+     */
+    public function contactIs()
+    {
+        return $this->belongsTo(Contact::class, 'contact_is');
+    }
+
+    /**
+     * Get the contact record connected with the relationship.
+     *
+     * @return BelongsTo
+     */
+    public function ofContact()
+    {
+        return $this->belongsTo(Contact::class, 'of_contact');
+    }
+
+    /**
+     * Get the relationship type record associated with the relationship.
+     *
+     * @return BelongsTo
+     */
+    public function relationshipType()
+    {
+        return $this->belongsTo(RelationshipType::class, 'relationship_type_id');
+    }
+
+    /**
+     * Get the reverser relationship of this one.
+     *
+     * @return self|null
+     */
+    public function reverseRelationship(): ?self
+    {
+        $reverseRelationshipType = $this->relationshipType->reverseRelationshipType();
+        if ($reverseRelationshipType) {
+            return self::where([
+                'account_id'=> $this->account_id,
+                'contact_is' => $this->of_contact,
+                'of_contact' => $this->contact_is,
+                'relationship_type_id' => $reverseRelationshipType->id,
+            ])->first();
+        }
+
+        return null;
+    }
+}