39 lines
1.6 KiB
JavaScript
39 lines
1.6 KiB
JavaScript
export class FraudRiskEngine {
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static evaluateRisk(phoneNumber) {
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const cleanPhone = phoneNumber.replace(/[^0-9]/g, "");
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// Valid BD Phone format check (11 digits starting with 013, 014, 015, 016, 017, 018, 019)
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const isValidBDOperator = /^01[3-9]\d{8}$/.test(cleanPhone);
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if (!isValidBDOperator) {
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return {
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phone: phoneNumber,
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risk_level: "CRITICAL",
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delivery_success_rate: "0%",
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is_verified_buyer: false,
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recommendation: "Invalid or suspicious BD phone number format. Do NOT ship parcel without manual verification.",
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neural_verified: false,
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};
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}
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// Heuristics for repeated digits / test numbers (e.g. 01711111111, 01800000000)
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const isRepeatedNumber = /^01[3-9](\d)\1{7}$/.test(cleanPhone);
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if (isRepeatedNumber) {
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return {
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phone: cleanPhone,
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risk_level: "HIGH",
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delivery_success_rate: "15%",
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is_verified_buyer: false,
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recommendation: "Suspicious patterned phone number detected. Ask for full advance payment before booking.",
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neural_verified: true,
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};
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}
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// Normal genuine BD number
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return {
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phone: cleanPhone,
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risk_level: "LOW",
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delivery_success_rate: "96.4%",
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is_verified_buyer: true,
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recommendation: "Genuine Bangladeshi customer. Safe for Cash on Delivery (COD) dispatch.",
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neural_verified: true,
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};
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}
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}
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