feat(platform): fresh mail, pdf and storage implementation

app/Platform/Mail/Models/EmailLog.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace App\Platform\Mail\Models;
+
+use App\Domains\Accounts\Models\CompanySetting;
+use Carbon\Carbon;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+
+/**
+ * One outbound document mail. Its token is the credential handed out in the
+ * public `/…/{token}` links, so this row is what a recipient's access to a
+ * document hangs on.
+ */
+class EmailLog extends Model
+{
+    use HasFactory;
+
+    protected $table = 'email_logs';
+
+    protected $guarded = ['id'];
+
+    /**
+     * The document this mail was sent about, referenced through the model
+     * alias map rather than a class name.
+     */
+    public function mailable(): MorphTo
+    {
+        return $this->morphTo();
+    }
+
+    /**
+     * Decide whether the public link backed by this row still works.
+     *
+     * A link dies with its document: once the referenced record is gone the
+     * link is treated as expired rather than as an error. Otherwise expiry is
+     * opt-in per company — with `automatically_expire_public_links` switched on,
+     * the link lasts `link_expiry_days` days from the moment this row was
+     * written, compared at whole-day granularity.
+     */
+    public function isExpired(): bool
+    {
+        $document = $this->mailable;
+
+        if (! $document) {
+            return true;
+        }
+
+        $lifespanInDays = (int) CompanySetting::getSetting('link_expiry_days', $document->company_id);
+        $expiryEnabled = CompanySetting::getSetting('automatically_expire_public_links', $document->company_id);
+
+        $lastValidDay = $this->created_at->addDays($lifespanInDays);
+
+        return $expiryEnabled == 'YES'
+            && Carbon::now()->format('Y-m-d') > $lastValidDay->format('Y-m-d');
+    }
+}