<?php
function required_env($name) {
    $value = getenv($name);
    if (!$value) {
        throw new RuntimeException("Set {$name} before running this example.");
    }
    return $value;
}

function request_json($method, $url, $payload = null, $token = null, $correlationId = null) {
    $ch = curl_init($url);
    $headers = ['Accept: application/json'];
    if ($payload !== null) {
        $headers[] = 'Content-Type: application/json';
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
    }
    if ($token) {
        $headers[] = 'Authorization: Bearer ' . $token;
    }
    if ($correlationId) {
        $headers[] = 'X-Correlation-Id: ' . $correlationId;
    }
    curl_setopt_array($ch, [
        CURLOPT_CUSTOMREQUEST => $method,
        CURLOPT_HTTPHEADER => $headers,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_TIMEOUT => 45
    ]);
    $body = curl_exec($ch);
    $status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    if ($body === false || $status < 200 || $status >= 300) {
        throw new RuntimeException('HTTP ' . $status . ': ' . curl_error($ch) . ' ' . $body);
    }
    curl_close($ch);
    return $body;
}

$identityUrl = getenv('DECISIOQ_IDENTITY_URL') ?: 'https://identity.vinquery.com/connect/token';
$catalogUrl = rtrim(getenv('DECISIOQ_DKS_URL') ?: 'https://dks.vinquery.com', '/');
$decisionServiceUrl = rtrim(getenv('DECISIOQ_DDE_URL') ?: 'https://dde.vinquery.com', '/');
$correlationId = 'auto-ins-011-php-' . date('YmdHis');

$tokenJson = request_json('POST', $identityUrl, [
    "clientId" => required_env("DECISIOQ_CLIENT_ID"),
    "clientSecret" => required_env("DECISIOQ_CLIENT_SECRET"),
    'audience' => getenv('DECISIOQ_AUDIENCE') ?: 'vinquery:api:decisioq'
]);
$token = json_decode($tokenJson, true)['jwtToken'];

request_json('GET', $catalogUrl . '/decisioncatalog/decisions/AUTO-INS-011', null, $token, $correlationId);

$request = [
    'decisionId' => 'AUTO-INS-011',
    'profileId' => 'balanced',
    'scenarioId' => 'standard',
    'algorithm' => 'TOPSIS',
    'weightStrategy' => 'Expert',
    'runSensitivity' => false,
    'requestContext' => ['correlationId' => $correlationId],
    'options' => [
        ['optionId' => 'CLAIM-011-01', 'name' => 'Claim CASE-001', 'values' => [
            'claim_severity_score' => 83,
            'customer_impact_score' => 83,
            'coverage_clarity_score' => 83,
            'fraud_risk_score' => 78,
            'estimated_loss_amount' => 62500
        ]],
        ['optionId' => 'CLAIM-011-02', 'name' => 'Claim CASE-002', 'values' => [
            'claim_severity_score' => 75,
            'customer_impact_score' => 75,
            'coverage_clarity_score' => 75,
            'fraud_risk_score' => 70,
            'estimated_loss_amount' => 107500
        ]]
    ]
];

echo request_json('POST', $decisionServiceUrl . '/api/v1/decide', $request, $token, $correlationId);