From ac0be8a19e0a7e535bdfcd9df037f93bec39fb07 Mon Sep 17 00:00:00 2001
From: Arya Dwi Putra <aryadptr.developer@gmail.com>
Date: Tue, 2 Dec 2025 16:18:30 +0700
Subject: [PATCH] Add asset financial fields, vendor contracts, and maintenance
 SLA inputs

---
 app/Models/Asset.php                          | 35 +++++++++++++++++++
 app/Models/AssetMaintenance.php               |  4 +++
 app/Models/VendorContract.php                 | 32 +++++++++++++++++
 ..._000000_add_financial_fields_to_assets.php | 35 +++++++++++++++++++
 ...2_000001_create_vendor_contracts_table.php | 28 +++++++++++++++
 ...2_add_sla_fields_to_asset_maintenances.php | 23 ++++++++++++
 .../partials/maintenance_form.blade.php       |  8 +++++
 7 files changed, 165 insertions(+)
 create mode 100644 app/Models/VendorContract.php
 create mode 100644 database/migrations/2025_12_12_000000_add_financial_fields_to_assets.php
 create mode 100644 database/migrations/2025_12_12_000001_create_vendor_contracts_table.php
 create mode 100644 database/migrations/2025_12_12_000002_add_sla_fields_to_asset_maintenances.php

diff --git a/app/Models/Asset.php b/app/Models/Asset.php
index 45cca41..a497754 100644
--- a/app/Models/Asset.php
+++ b/app/Models/Asset.php
@@ -27,7 +27,13 @@ class Asset extends Model
         'warranty_id',
         'purchase_date',
         'warranty_end',
+        'warranty_reminder_sent_at',
         'cost',
+        'depreciation_method',
+        'useful_life_months',
+        'residual_value',
+        'capex_opex',
+        'vendor_contract_id',
         'qr_token',
         'qr_path',
         'metadata',
@@ -36,6 +42,8 @@ class Asset extends Model
     protected $casts = [
         'purchase_date' => 'date',
         'warranty_end' => 'date',
+        'warranty_reminder_sent_at' => 'datetime',
+        'residual_value' => 'decimal:2',
         'metadata' => 'array',
     ];
 
@@ -84,6 +92,11 @@ class Asset extends Model
         return $this->belongsTo(Warranty::class);
     }
 
+    public function vendorContract()
+    {
+        return $this->belongsTo(VendorContract::class);
+    }
+
     public function histories()
     {
         return $this->hasMany(AssetHistory::class);
@@ -169,4 +182,26 @@ class Asset extends Model
 
         return $departmentMatch || $locationMatch;
     }
+
+    public function bookValue(?\Carbon\Carbon $asOf = null): float
+    {
+        $asOf = $asOf ?: now();
+        $cost = (float) ($this->cost ?? 0);
+        $residual = (float) ($this->residual_value ?? 0);
+        $lifeMonths = (int) ($this->useful_life_months ?? 0);
+        if ($cost <= 0 || $lifeMonths <= 0 || !$this->purchase_date) {
+            return $cost;
+        }
+
+        $monthsUsed = max(0, $this->purchase_date->diffInMonths($asOf));
+        if ($this->depreciation_method === 'diminishing') {
+            $rate = pow($residual / max($cost, 1), 1 / max($lifeMonths, 1));
+            $value = $cost * pow($rate, $monthsUsed);
+            return max($value, $residual);
+        }
+
+        $monthlyDep = ($cost - $residual) / $lifeMonths;
+        $value = $cost - ($monthlyDep * $monthsUsed);
+        return max($value, $residual);
+    }
 }
diff --git a/app/Models/AssetMaintenance.php b/app/Models/AssetMaintenance.php
index 9f0e437..daa58c8 100644
--- a/app/Models/AssetMaintenance.php
+++ b/app/Models/AssetMaintenance.php
@@ -24,6 +24,8 @@ class AssetMaintenance extends Model
         'rejected_by',
         'rejected_at',
         'decision_notes',
+        'sla_response_hours',
+        'sla_resolution_hours',
     ];
 
     protected $casts = [
@@ -31,6 +33,8 @@ class AssetMaintenance extends Model
         'cost' => 'decimal:2',
         'approved_at' => 'datetime',
         'rejected_at' => 'datetime',
+        'sla_response_hours' => 'integer',
+        'sla_resolution_hours' => 'integer',
     ];
 
     public function asset()
diff --git a/app/Models/VendorContract.php b/app/Models/VendorContract.php
new file mode 100644
index 0000000..d362126
--- /dev/null
+++ b/app/Models/VendorContract.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Concerns\HasUuids;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class VendorContract extends Model
+{
+    use HasFactory, HasUuids;
+
+    protected $fillable = [
+        'vendor_name',
+        'contract_number',
+        'start_date',
+        'end_date',
+        'sla_response_hours',
+        'sla_resolution_hours',
+        'notes',
+    ];
+
+    protected $casts = [
+        'start_date' => 'date',
+        'end_date' => 'date',
+    ];
+
+    public function assets()
+    {
+        return $this->hasMany(Asset::class);
+    }
+}
diff --git a/database/migrations/2025_12_12_000000_add_financial_fields_to_assets.php b/database/migrations/2025_12_12_000000_add_financial_fields_to_assets.php
new file mode 100644
index 0000000..725054f
--- /dev/null
+++ b/database/migrations/2025_12_12_000000_add_financial_fields_to_assets.php
@@ -0,0 +1,35 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('assets', function (Blueprint $table) {
+            $table->string('depreciation_method')->default('straight_line')->after('cost');
+            $table->unsignedInteger('useful_life_months')->nullable()->after('depreciation_method');
+            $table->decimal('residual_value', 15, 2)->nullable()->after('useful_life_months');
+            $table->string('capex_opex')->nullable()->after('residual_value'); // capex|opex
+            $table->foreignUuid('vendor_contract_id')->nullable()->after('capex_opex')->constrained('vendor_contracts')->nullOnDelete();
+            $table->timestamp('warranty_reminder_sent_at')->nullable()->after('warranty_end');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('assets', function (Blueprint $table) {
+            $table->dropForeign(['vendor_contract_id']);
+            $table->dropColumn([
+                'depreciation_method',
+                'useful_life_months',
+                'residual_value',
+                'capex_opex',
+                'vendor_contract_id',
+                'warranty_reminder_sent_at',
+            ]);
+        });
+    }
+};
diff --git a/database/migrations/2025_12_12_000001_create_vendor_contracts_table.php b/database/migrations/2025_12_12_000001_create_vendor_contracts_table.php
new file mode 100644
index 0000000..c3fe563
--- /dev/null
+++ b/database/migrations/2025_12_12_000001_create_vendor_contracts_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('vendor_contracts', function (Blueprint $table) {
+            $table->uuid('id')->primary();
+            $table->string('vendor_name');
+            $table->string('contract_number')->nullable();
+            $table->date('start_date')->nullable();
+            $table->date('end_date')->nullable();
+            $table->unsignedInteger('sla_response_hours')->nullable();
+            $table->unsignedInteger('sla_resolution_hours')->nullable();
+            $table->text('notes')->nullable();
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('vendor_contracts');
+    }
+};
diff --git a/database/migrations/2025_12_12_000002_add_sla_fields_to_asset_maintenances.php b/database/migrations/2025_12_12_000002_add_sla_fields_to_asset_maintenances.php
new file mode 100644
index 0000000..174f0d8
--- /dev/null
+++ b/database/migrations/2025_12_12_000002_add_sla_fields_to_asset_maintenances.php
@@ -0,0 +1,23 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('asset_maintenances', function (Blueprint $table) {
+            $table->unsignedInteger('sla_response_hours')->nullable()->after('status');
+            $table->unsignedInteger('sla_resolution_hours')->nullable()->after('sla_response_hours');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('asset_maintenances', function (Blueprint $table) {
+            $table->dropColumn(['sla_response_hours', 'sla_resolution_hours']);
+        });
+    }
+};
diff --git a/resources/views/assets/partials/maintenance_form.blade.php b/resources/views/assets/partials/maintenance_form.blade.php
index d276cab..c4fec52 100644
--- a/resources/views/assets/partials/maintenance_form.blade.php
+++ b/resources/views/assets/partials/maintenance_form.blade.php
@@ -33,6 +33,14 @@
                                     <option value="completed" selected>Completed</option>
                                 </select>
                             </div>
+                            <div class="col-md-4">
+                                <label class="form-label">SLA Response (jam)</label>
+                                <input type="number" name="sla_response_hours" class="form-control" placeholder="cth: 4">
+                            </div>
+                            <div class="col-md-4">
+                                <label class="form-label">SLA Resolution (jam)</label>
+                                <input type="number" name="sla_resolution_hours" class="form-control" placeholder="cth: 24">
+                            </div>
                             <div class="col-md-12">
                                 <label class="form-label">Catatan</label>
                                 <textarea name="notes" class="form-control" rows="2" placeholder="Catatan tambahan"></textarea>