64 lines
3.2 KiB
C#
64 lines
3.2 KiB
C#
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using System.Text.RegularExpressions;
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using JobsMedical.Web.Models;
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namespace JobsMedical.Web.Services.Scraping;
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public record ValidationResult(bool IsValid, bool IsSpam, int Confidence, List<string> Issues);
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/// <summary>
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/// Scores a parsed listing for completeness and screens out spam. A listing must look like a
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/// real medical shift/job (role + a location or pay signal, plausible length, contact) to pass.
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/// The confidence drives whether it lands in the review queue (New), gets Flagged for a closer
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/// look, or is auto-discarded as spam.
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/// </summary>
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public class ListingValidator
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{
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// Posts that smell like ads/scams rather than medical shifts.
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private static readonly string[] SpamMarkers =
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{
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"سرمایه گذاری", "سرمایهگذاری", "وام", "ارز دیجیتال", "رمز ارز", "فروش فالوور",
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"بک لینک", "تبلیغات", "قرعه کشی", "جایزه", "کازینو", "شرط بندی", "بیت کوین"
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};
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private static readonly string[] MedicalMarkers =
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{
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"شیفت", "درمانگاه", "بیمارستان", "کلینیک", "پزشک", "پرستار", "ماما", "تکنسین",
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"اورژانس", "استخدام", "کادر درمان", "مطب", "آنکال", "کشیک"
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};
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public ValidationResult Validate(string rawText, ParsedListing parsed)
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{
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var issues = new List<string>();
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var text = rawText ?? "";
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bool isSpam = SpamMarkers.Any(text.Contains)
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&& !MedicalMarkers.Any(text.Contains);
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if (isSpam) issues.Add("بهنظر اسپم/تبلیغاتی است");
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bool looksMedical = MedicalMarkers.Any(text.Contains);
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if (!looksMedical) issues.Add("نشانهای از حوزه درمان یافت نشد");
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int score = 0;
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if (parsed.RoleName is not null) score += 30; else issues.Add("نقش مشخص نیست");
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if (parsed.CityName is not null || parsed.DistrictName is not null) score += 20;
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else issues.Add("شهر/محل مشخص نیست");
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if (parsed.PayAmount is not null || parsed.SharePercent is not null || parsed.PayNegotiable)
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score += 20; else issues.Add("اطلاعات پرداخت یافت نشد");
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if (parsed.Phone is not null) score += 15; else issues.Add("شماره تماس یافت نشد");
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if (parsed.Kind == ListingKind.Shift && parsed.ShiftType is not null) score += 10;
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if (looksMedical) score += 5;
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// Sanity on length — a few words isn't a real listing; a wall of text is suspicious.
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var len = text.Trim().Length;
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if (len < 25) { score -= 20; issues.Add("متن خیلی کوتاه است"); }
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if (len > 1500) { score -= 10; issues.Add("متن غیرعادی بلند است"); }
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if (Regex.Matches(text, @"https?://").Count >= 3) { score -= 15; issues.Add("لینکهای متعدد"); }
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score = Math.Clamp(score, 0, 100);
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// Valid enough for the queue if it's medical, not spam, and reasonably complete.
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bool isValid = !isSpam && looksMedical && score >= 50;
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return new ValidationResult(isValid, isSpam, score, issues);
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}
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}
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