Foxnouns.NET/Foxnouns.Backend/Database/FlagQueryExtensions.cs

96 lines
3.5 KiB
C#

// Copyright (C) 2023-present sam/u1f320 (vulpine.solutions)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
using Foxnouns.Backend.Database.Models;
using Microsoft.EntityFrameworkCore;
namespace Foxnouns.Backend.Database;
public static class FlagQueryExtensions
{
private static async Task<List<PrideFlag>> GetFlagsAsync(
this DatabaseContext db,
Snowflake userId
) => await db.PrideFlags.Where(f => f.UserId == userId).OrderBy(f => f.Id).ToListAsync();
/// <summary>
/// Sets the user's profile flags to the given IDs. Returns a validation error if any of the flag IDs are unknown
/// or if too many IDs are given. Duplicates are allowed.
/// </summary>
public static async Task<ValidationError?> SetUserFlagsAsync(
this DatabaseContext db,
Snowflake userId,
Snowflake[] flagIds
)
{
List<UserFlag> currentFlags = await db
.UserFlags.Where(f => f.UserId == userId)
.ToListAsync();
foreach (UserFlag flag in currentFlags)
db.UserFlags.Remove(flag);
// If there's no new flags to set, we're done
if (flagIds.Length == 0)
return null;
if (flagIds.Length > 100)
return ValidationError.LengthError("Too many profile flags", 0, 100, flagIds.Length);
List<PrideFlag> flags = await db.GetFlagsAsync(userId);
Snowflake[] unknownFlagIds = flagIds.Where(id => flags.All(f => f.Id != id)).ToArray();
if (unknownFlagIds.Length != 0)
return ValidationError.GenericValidationError("Unknown flag IDs", unknownFlagIds);
IEnumerable<UserFlag> userFlags = flagIds.Select(id => new UserFlag
{
PrideFlagId = id,
UserId = userId,
});
db.UserFlags.AddRange(userFlags);
return null;
}
public static async Task<ValidationError?> SetMemberFlagsAsync(
this DatabaseContext db,
Snowflake userId,
Snowflake memberId,
Snowflake[] flagIds
)
{
List<MemberFlag> currentFlags = await db
.MemberFlags.Where(f => f.MemberId == memberId)
.ToListAsync();
foreach (MemberFlag flag in currentFlags)
db.MemberFlags.Remove(flag);
if (flagIds.Length == 0)
return null;
if (flagIds.Length > 100)
return ValidationError.LengthError("Too many profile flags", 0, 100, flagIds.Length);
List<PrideFlag> flags = await db.GetFlagsAsync(userId);
Snowflake[] unknownFlagIds = flagIds.Where(id => flags.All(f => f.Id != id)).ToArray();
if (unknownFlagIds.Length != 0)
return ValidationError.GenericValidationError("Unknown flag IDs", unknownFlagIds);
IEnumerable<MemberFlag> memberFlags = flagIds.Select(id => new MemberFlag
{
PrideFlagId = id,
MemberId = memberId,
});
db.MemberFlags.AddRange(memberFlags);
return null;
}
}