recreate project

app/Database/Migrations/2025-09-10-000002_CreateInventoryTables.php

@@ -0,0 +1,119 @@
+<?php
+
+namespace App\Database\Migrations;
+
+use CodeIgniter\Database\Migration;
+
+class CreateInventoryTables extends Migration
+{
+    public function up()
+    {
+        // --------- inventory_categories ----------
+        $this->forge->addField([
+            'id'          => ['type' => 'INT', 'unsigned' => true, 'auto_increment' => true],
+            'type'        => ['type' => 'ENUM("classroom","book","office","kitchen")', 'null' => false, 'default' => 'office'],
+            'name'        => ['type' => 'VARCHAR', 'constraint' => 120, 'null' => false],
+            'description' => ['type' => 'TEXT', 'null' => true],
+            'created_at'  => ['type' => 'DATETIME', 'null' => true],
+            'updated_at'  => ['type' => 'DATETIME', 'null' => true],
+        ]);
+        $this->forge->addKey('id', true);
+        $this->forge->addUniqueKey(['type', 'name']); // unique per type
+        $this->forge->createTable('inventory_categories', true, [
+            'ENGINE' => 'InnoDB',
+        ]);
+
+        // --------- inventory_items ----------
+        $this->forge->addField([
+            'id'          => ['type' => 'INT', 'unsigned' => true, 'auto_increment' => true],
+            'type'        => ['type' => 'ENUM("classroom","book","office","kitchen")', 'null' => false],
+            'category_id' => ['type' => 'INT', 'unsigned' => true, 'null' => true],
+
+            'name'        => ['type' => 'VARCHAR', 'constraint' => 190, 'null' => false],
+            'description' => ['type' => 'TEXT', 'null' => true],
+
+            'quantity'    => ['type' => 'INT', 'unsigned' => true, 'default' => 0],
+            'unit'        => ['type' => 'VARCHAR', 'constraint' => 32, 'null' => true, 'default' => null],
+
+            // Classroom-only condition
+            'condition'   => ['type' => 'ENUM("good","needs_repair","need_replace","cannot_find")', 'null' => true, 'default' => null],
+
+            // Book extras (author removed earlier)
+            'isbn'        => ['type' => 'VARCHAR', 'constraint' => 32, 'null' => true],
+            'edition'     => ['type' => 'VARCHAR', 'constraint' => 32, 'null' => true],
+
+            // Misc
+            'sku'         => ['type' => 'VARCHAR', 'constraint' => 64, 'null' => true],
+            'notes'       => ['type' => 'TEXT', 'null' => true],
+
+            // Academic tagging
+            'semester'    => ['type' => 'ENUM("Spring","Fall")', 'null' => true],
+            'school_year' => ['type' => 'VARCHAR', 'constraint' => 16, 'null' => true], // e.g. 2025-2026
+
+            // Audit
+            'updated_by'  => ['type' => 'INT', 'unsigned' => true, 'null' => true],
+
+            'created_at'  => ['type' => 'DATETIME', 'null' => true],
+            'updated_at'  => ['type' => 'DATETIME', 'null' => true],
+        ]);
+
+        // Indexes
+        $this->forge->addKey('id', true);
+        $this->forge->addKey(['type', 'name']);
+        $this->forge->addKey(['school_year', 'semester']);
+        $this->forge->addKey('category_id'); // ensure indexed for FK
+        $this->forge->addKey('updated_by');  // ensure indexed for FK
+
+        // Category FK (safe; category table we just created with InnoDB)
+        $this->forge->addForeignKey('category_id', 'inventory_categories', 'id', 'SET NULL', 'CASCADE');
+
+        // Create items table first, then add users FK conditionally
+        $this->forge->createTable('inventory_items', true, [
+            'ENGINE' => 'InnoDB',
+        ]);
+
+        // ---- Add updated_by → users(id) FK conditionally & safely ----
+        $db = \Config\Database::connect();
+
+        if ($db->tableExists('users')) {
+            // Confirm users is InnoDB and id is an unsigned INT
+            $engineRow = $db->query("
+                SELECT ENGINE FROM information_schema.TABLES
+                WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'users'
+            ")->getFirstRow('array');
+
+            $colRow = $db->query("
+                SELECT COLUMN_TYPE, IS_NULLABLE
+                FROM information_schema.COLUMNS
+                WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'users' AND COLUMN_NAME = 'id'
+            ")->getFirstRow('array');
+
+            $isInno = isset($engineRow['ENGINE']) && strtoupper($engineRow['ENGINE']) === 'INNODB';
+            $isUint = isset($colRow['COLUMN_TYPE']) && stripos($colRow['COLUMN_TYPE'], 'int') !== false && stripos($colRow['COLUMN_TYPE'], 'unsigned') !== false;
+
+            if ($isInno && $isUint) {
+                // Add the FK now (separate ALTER avoids "incorrectly formed" during CREATE)
+                $db->query("
+                    ALTER TABLE inventory_items
+                    ADD CONSTRAINT fk_inventory_items_updated_by
+                    FOREIGN KEY (updated_by) REFERENCES users(id)
+                    ON DELETE SET NULL ON UPDATE CASCADE
+                ");
+            }
+            // If not compatible, we skip the FK to avoid migration failure.
+        }
+    }
+
+    public function down()
+    {
+        // Drop children first
+        $db = \Config\Database::connect();
+        if ($db->tableExists('inventory_items')) {
+            // drop conditional FK if exists
+            try { $db->query("ALTER TABLE inventory_items DROP FOREIGN KEY fk_inventory_items_updated_by"); } catch (\Throwable $e) {}
+        }
+
+        $this->forge->dropTable('inventory_items', true);
+        $this->forge->dropTable('inventory_categories', true);
+    }
+}