feat: 實作機台日誌核心功能與 IoT 高併發處理架構

app/Models/Member/MemberMembership.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace App\Models\Member;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class MemberMembership extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'member_id',
+        'tier_id',
+        'starts_at',
+        'expires_at',
+        'payment_id',
+        'auto_renew',
+        'status',
+    ];
+
+    protected $casts = [
+        'starts_at' => 'datetime',
+        'expires_at' => 'datetime',
+        'auto_renew' => 'boolean',
+    ];
+
+    /**
+     * 所屬會員
+     */
+    public function member(): BelongsTo
+    {
+        return $this->belongsTo(Member::class);
+    }
+
+    /**
+     * 會員等級
+     */
+    public function tier(): BelongsTo
+    {
+        return $this->belongsTo(MembershipTier::class, 'tier_id');
+    }
+
+    /**
+     * 是否有效
+     */
+    public function getIsActiveAttribute(): bool
+    {
+        return $this->status === 'active' 
+            && (!$this->expires_at || $this->expires_at->isFuture());
+    }
+
+    /**
+     * 有效會員資格
+     */
+    public function scopeActive($query)
+    {
+        return $query->where('status', 'active')
+            ->where(function ($q) {
+                $q->whereNull('expires_at')
+                    ->orWhere('expires_at', '>', now());
+            });
+    }
+}