fix inventory

database/migrations/2026_06_11_074503_add_inventory_movement_audit_fields.php

@@ -0,0 +1,46 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('inventory_movements', function (Blueprint $table) {
+            // Audit/correction fields for append-only ledger
+            $table->timestamp('voided_at')->nullable()->after('updated_at');
+            $table->unsignedBigInteger('voided_by')->nullable()->after('voided_at');
+            $table->string('void_reason', 255)->nullable()->after('voided_by');
+            $table->unsignedBigInteger('corrects_movement_id')->nullable()->after('void_reason');
+            $table->string('source_type', 50)->nullable()->after('corrects_movement_id');
+            $table->unsignedBigInteger('source_id')->nullable()->after('source_type');
+
+            // Index for efficient queries
+            $table->index('voided_at');
+            $table->index('corrects_movement_id');
+            $table->index('source_type');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('inventory_movements', function (Blueprint $table) {
+            $table->dropColumn([
+                'voided_at',
+                'voided_by',
+                'void_reason',
+                'corrects_movement_id',
+                'source_type',
+                'source_id',
+            ]);
+        });
+    }
+};

database/migrations/2026_06_11_074621_add_inventory_item_reorder_fields.php

@@ -0,0 +1,52 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('inventory_items', function (Blueprint $table) {
+            // Supplier and reorder fields
+            $table->unsignedBigInteger('preferred_supplier_id')->nullable()->after('updated_by');
+            $table->decimal('last_purchase_price', 10, 2)->nullable()->after('preferred_supplier_id');
+            $table->decimal('average_unit_cost', 10, 2)->nullable()->after('last_purchase_price');
+            $table->integer('reorder_point')->nullable()->after('average_unit_cost');
+            $table->integer('reorder_quantity')->nullable()->after('reorder_point');
+            $table->integer('lead_time_days')->nullable()->after('reorder_quantity');
+
+            // Barcode/QR support
+            $table->string('barcode', 100)->nullable()->after('lead_time_days');
+            $table->string('qr_code', 255)->nullable()->after('barcode');
+            $table->string('asset_tag', 100)->nullable()->after('qr_code');
+
+            $table->index('preferred_supplier_id');
+            $table->index('reorder_point');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('inventory_items', function (Blueprint $table) {
+            $table->dropColumn([
+                'preferred_supplier_id',
+                'last_purchase_price',
+                'average_unit_cost',
+                'reorder_point',
+                'reorder_quantity',
+                'lead_time_days',
+                'barcode',
+                'qr_code',
+                'asset_tag',
+            ]);
+        });
+    }
+};

database/migrations/2026_06_11_074642_add_inventory_item_id_to_purchase_order_items.php

@@ -0,0 +1,40 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('purchase_order_items', function (Blueprint $table) {
+            if (!Schema::hasColumn('purchase_order_items', 'inventory_item_id')) {
+                $table->unsignedInteger('inventory_item_id')->nullable()->after('supply_id');
+            }
+        });
+
+        // Add index if it doesn't exist
+        $indexExists = DB::select("SHOW INDEX FROM purchase_order_items WHERE Key_name = 'po_items_inventory_item_idx'");
+        if (empty($indexExists)) {
+            Schema::table('purchase_order_items', function (Blueprint $table) {
+                $table->index('inventory_item_id', 'po_items_inventory_item_idx');
+            });
+        }
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('purchase_order_items', function (Blueprint $table) {
+            $table->dropIndex('po_items_inventory_item_idx');
+            $table->dropColumn('inventory_item_id');
+        });
+    }
+};