Gulum
1a5f3218fb
GerbilStatus: Active→Breeding, add Pet; Deceased/GivenAway are now DERIVED. GerbilStatusService.Derive(): central precedence: DateOfDeath→Deceased (1), ReceiverContactId→GivenAway (2), age>7y→Deceased presumed (3), user choice (4). All write paths (gerbil CRUD, contracts, importers) call GerbilStatusService.Apply(). Startup sweep flips >7y gerbils to Deceased at next app restart. Migration StatusModel: Active→Breeding rename + backfill derived statuses. 10 new tests; 200/200 green; has-pending=No. Enum string values: Breeding (was Active), Pet (new), Deceased, GivenAway, ForSale. FE contract: status field values updated (see Done-Report).
54 lines
2.5 KiB
C#
54 lines
2.5 KiB
C#
using GerbilManagerWebAPI.Models;
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namespace GerbilManagerWebAPI.Services
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{
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/// <summary>
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/// Central status-derivation logic. Every write path (create/update gerbil, SaleContract
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/// Abgabe, import, startup sweep) calls Apply() after setting the other fields so the
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/// derived statuses (Deceased, GivenAway) are always consistent.
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///
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/// Precedence (highest wins):
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/// 1) DateOfDeath set → Deceased (explicit, always)
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/// 2) Abgabe (ReceiverContactId set) → GivenAway
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/// 3) Age > MaxAgeYears without a death date or Abgabe → Deceased (presumed)
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/// 4) User-supplied {Breeding, Pet, ForSale}; defaults Breeding if invalid
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///
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/// Age-based death is time-dependent. The stored column is kept up-to-date by:
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/// a) Apply() on every write (catches the animal at write time)
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/// b) A startup sweep in Program.cs (catches animals that silently crossed the threshold)
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/// Gridify filters on the stored value, so status==Breeding never surfaces >7y animals.
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/// </summary>
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public static class GerbilStatusService
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{
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public const int MaxAgeYears = 7;
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/// <summary>Derives and sets g.Status using the gerbil's current field values.
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/// Must be called AFTER all other fields (DateOfDeath, ReceiverContactId, DateOfBirth)
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/// have been applied. today = DateOnly.FromDateTime(DateTime.UtcNow).</summary>
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public static void Apply(Gerbil g, DateOnly today)
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{
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g.Status = Derive(g.Status, g.DateOfBirth, g.DateOfDeath,
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isAbgegeben: g.ReceiverContactId is not null, today);
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}
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/// <summary>Pure derivation — useful for tests and the migration backfill.</summary>
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public static GerbilStatus Derive(
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GerbilStatus requested,
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DateOnly? dateOfBirth,
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DateOnly? dateOfDeath,
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bool isAbgegeben,
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DateOnly today)
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{
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if (dateOfDeath is not null) return GerbilStatus.Deceased;
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if (isAbgegeben) return GerbilStatus.GivenAway;
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if (dateOfBirth is not null && IsOlderThan(dateOfBirth.Value, MaxAgeYears, today))
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return GerbilStatus.Deceased;
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return requested is GerbilStatus.Breeding or GerbilStatus.Pet or GerbilStatus.ForSale
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? requested : GerbilStatus.Breeding;
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}
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private static bool IsOlderThan(DateOnly dob, int years, DateOnly today) =>
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today >= dob.AddYears(years);
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}
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}
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