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