36 lines
1.5 KiB
C#
36 lines
1.5 KiB
C#
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using Foxnouns.Backend.Database.Models;
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using Microsoft.EntityFrameworkCore;
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namespace Foxnouns.Backend.Database;
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public static class FlagQueryExtensions
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{
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private static async Task<List<PrideFlag>> GetFlagsAsync(this DatabaseContext db, Snowflake userId) =>
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await db.PrideFlags.Where(f => f.UserId == userId).OrderBy(f => f.Id).ToListAsync();
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/// <summary>
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/// Sets the user's profile flags to the given IDs. Returns a validation error if any of the flag IDs are unknown
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/// or if too many IDs are given. Duplicates are allowed.
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/// </summary>
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public static async Task<ValidationError?> SetUserFlagsAsync(this DatabaseContext db, Snowflake userId,
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Snowflake[] flagIds)
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{
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var currentFlags = await db.UserFlags.Where(f => f.UserId == userId).ToListAsync();
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foreach (var flag in currentFlags)
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db.UserFlags.Remove(flag);
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// If there's no new flags to set, we're done
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if (flagIds.Length == 0) return null;
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if (flagIds.Length > 100) return ValidationError.LengthError("Too many profile flags", 0, 100, flagIds.Length);
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var flags = await db.GetFlagsAsync(userId);
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var unknownFlagIds = flagIds.Where(id => flags.All(f => f.Id != id)).ToArray();
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if (unknownFlagIds.Length != 0)
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return ValidationError.GenericValidationError("Unknown flag IDs", unknownFlagIds);
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var userFlags = flagIds.Select(id => new UserFlag { PrideFlagId = id, UserId = userId });
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db.UserFlags.AddRange(userFlags);
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return null;
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}
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}
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