refactor: replace custom CRM with Monica fork

app/Models/Instance/Emotion/SecondaryEmotion.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace App\Models\Instance\Emotion;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+/**
+ * An emotion (ex: Adoration) is defined into 3 categories:
+ * - Primary: Love
+ * - Secondary: Affection
+ * - Tertiary: Adoration.
+ */
+class SecondaryEmotion extends Model
+{
+    protected $table = 'emotions_secondary';
+
+    /**
+     * The attributes that aren't mass assignable.
+     *
+     * @var array<string>|bool
+     */
+    protected $guarded = ['id'];
+
+    /**
+     * Get the primary emotion record associated with the secondary emotion.
+     *
+     * @return BelongsTo
+     */
+    public function primary()
+    {
+        return $this->belongsTo(PrimaryEmotion::class, 'emotion_primary_id');
+    }
+
+    /**
+     * Get the emotion records associated with the secondary emotion.
+     *
+     * @return HasMany
+     */
+    public function emotions()
+    {
+        return $this->hasMany(Emotion::class);
+    }
+}