feat: more seed data

dashboard/database/seeders/LongitudinalSurveillanceSeeder.php

@@ -0,0 +1,83 @@
+<?php
+
+namespace Database\Seeders;
+
+use Illuminate\Database\Seeder;
+use Illuminate\Support\Facades\DB;
+use Carbon\Carbon;
+use App\Models\Surveillance;
+
+class LongitudinalSurveillanceSeeder extends Seeder
+{
+    public function run(): void
+    {
+        $start = Carbon::create(2020, 1, 1);
+        $end = Carbon::now();
+
+        $provinces = [
+            'Phnom Penh',
+            'Siem Reap',
+            'Battambang',
+            'Kampong Cham',
+            'Preah Sihanouk'
+        ];
+
+        $surveillances = Surveillance::all();
+
+        $current = $start->copy();
+
+        while ($current <= $end) {
+
+            foreach ($surveillances as $surveillance) {
+
+                // seasonal influenza peak (Nov–Feb)
+                $month = $current->month;
+                $seasonFactor = in_array($month, [11, 12, 1, 2]) ? 1.5 : 1;
+
+                // covid surge 2020–2022
+                $covidFactor = ($current->year <= 2022) ? 1.8 : 1;
+
+                $baseCases = rand(5, 15);
+                $weeklyCases = (int) ($baseCases * $seasonFactor * $covidFactor);
+
+                for ($i = 0; $i < $weeklyCases; $i++) {
+
+                    $labCode = strtoupper($surveillance->code) .
+                        '-' . $current->format('Y') .
+                        '-' . uniqid();
+
+                    DB::table('analytic.surveillance_cases')->insert([
+                        'lab_code' => $labCode,
+                        'is_newcase' => 1,
+                        'sentinel_site_name' => 'Sentinel A',
+                        'site_province_name' => $provinces[array_rand($provinces)],
+                        'surveillance_id' => $surveillance->id,
+                        'year_data' => $current->year,
+                        'week_data' => $current->week,
+                        'case_date' => $current->copy(),
+                        'patient_age_inday' => rand(100, 25000),
+                        'patient_sex' => rand(0, 1) ? 'M' : 'F',
+                        'is_alive' => rand(0, 10) > 1 ? 1 : 0,
+                        'patient_privince' => $provinces[array_rand($provinces)]
+                    ]);
+
+                    $pathogen = rand(0, 1)
+                        ? 'Influenza A'
+                        : 'SARS-CoV-2';
+
+                    $isPositive = rand(0, 100) < 35 ? 1 : 0;
+
+                    DB::table('analytic.case_lab_results')->insert([
+                        'lab_code' => $labCode,
+                        'is_positive' => $isPositive,
+                        'pathogen_name' => $pathogen,
+                        'subtype' => null,
+                        'indicator' => null
+                    ]);
+                }
+            }
+
+            $current->addWeek();
+        }
+    }
+}