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tiku-backend.net/Tiku.Infrastructure/Growth/CommissionService.cs
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refactor(architecture): harden module boundaries
2026-08-04 12:10:36 +08:00

492 lines
26 KiB
C#

using System.Globalization;
using System.Security.Cryptography;
using System.Text;
using System.Text.Json;
using Microsoft.EntityFrameworkCore;
using Tiku.Application.Growth;
using Tiku.Application.Security;
using Tiku.Domain.Commerce;
using Tiku.Domain.Common;
using Tiku.Domain.Growth;
using Tiku.Domain.Operations;
using Tiku.Infrastructure.Persistence;
namespace Tiku.Infrastructure.Growth;
public sealed class CommissionService(
IGrowthPersistence growthPersistence,
ICommercePersistence commercePersistence,
IJobsOperationsPersistence jobsOperationsPersistence,
IIdentityPersistence identityPersistence,
ICurrentAccessContext currentAccessContext) : ICommissionService
{
public async Task<CommissionSettingsItem> GetSettingsAsync(CommissionAdminActor actor,
CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
return ToSettingsItem(await GetSettingsCoreAsync(actor.TenantId, cancellationToken));
}
public async Task<CommissionSettingsItem> UpdateSettingsAsync(CommissionAdminActor actor,
UpdateCommissionSettingsCommand command, CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
var settings = await GetSettingsCoreAsync(actor.TenantId, cancellationToken);
settings.DefaultRate = command.DefaultRate ?? settings.DefaultRate;
settings.MinSettlementCents = command.MinSettlementCents ?? settings.MinSettlementCents;
settings.SettlementCycle =
ParseEnum(command.SettlementCycle, settings.SettlementCycle, "invalid_commission_cycle");
settings.Config = command.Config ?? settings.Config;
settings.UpdatedBy = actor.UserId;
await growthPersistence.SaveChangesAsync(cancellationToken);
return ToSettingsItem(settings);
}
public async Task<object> UpdateMemberRateAsync(CommissionAdminActor actor,
UpdateMemberCommissionRateCommand command, CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
var member = await identityPersistence.TenantMemberships
.FirstOrDefaultAsync(item => item.TenantId == actor.TenantId && item.UserId == command.UserId,
cancellationToken)
?? throw new CommissionException("Commission member was not found.",
"commission_member_not_found");
var settings = await GetSettingsCoreAsync(actor.TenantId, cancellationToken);
var config = settings.Config.ValueKind == JsonValueKind.Object
? JsonSerializer.Deserialize<Dictionary<string, JsonElement>>(settings.Config.GetRawText()) ?? []
: [];
var memberRates = config.TryGetValue("memberRates", out var existingRates) &&
existingRates.ValueKind == JsonValueKind.Object
? JsonSerializer.Deserialize<Dictionary<string, JsonElement>>(existingRates.GetRawText()) ?? []
: [];
memberRates[member.UserId.ToString("N")] = JsonSerializer.SerializeToElement(new
{
commissionRate = command.CommissionRate,
commissionConfig = command.CommissionConfig
});
config["memberRates"] = JsonSerializer.SerializeToElement(memberRates);
settings.Config = JsonSerializer.SerializeToElement(config);
await growthPersistence.SaveChangesAsync(cancellationToken);
return new
{
member.UserId,
commissionRate = command.CommissionRate,
commissionConfig = command.CommissionConfig
};
}
public async Task<CommissionSummaryItem> GetSummaryAsync(CommissionAdminActor actor, CommissionPeriodQuery query,
CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
var rows = await BuildSourcesAsync(actor.TenantId, query, cancellationToken);
return new CommissionSummaryItem(
rows.Count,
rows.Select(item => item.StudentUserId).Where(id => id.HasValue).Distinct().Count(),
rows.Sum(item => item.GrossAmountCents),
rows.Sum(item => item.CommissionAmountCents));
}
public async Task<CommissionList<CommissionSourceItem>> GetOrdersAsync(CommissionAdminActor actor,
CommissionPeriodQuery query, CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
var rows = await BuildSourcesAsync(actor.TenantId, query, cancellationToken);
return new CommissionList<CommissionSourceItem>(rows.Take(Math.Clamp(query.Limit ?? 100, 1, 500))
.Select(ToSourceItem).ToArray());
}
public async Task<CommissionList<CommissionSettlementItemDto>> GetSettlementsAsync(CommissionAdminActor actor,
CommissionSettlementQuery query, CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
var items = growthPersistence.CommissionSettlements.AsNoTracking().Where(item => item.TenantId == actor.TenantId);
if (query.ReferrerUserId.HasValue)
items = items.Where(item => item.ReferrerUserId == query.ReferrerUserId.Value);
if (!string.IsNullOrWhiteSpace(query.Status))
items = items.Where(item =>
item.Status == ParseEnum(query.Status, CommissionSettlementStatus.Draft, "invalid_commission_status"));
var result = await items.OrderByDescending(item => item.CreatedAt).Take(Math.Clamp(query.Limit ?? 100, 1, 500))
.ToArrayAsync(cancellationToken);
return new CommissionList<CommissionSettlementItemDto>(result.Select(ToSettlementItem).ToArray());
}
public async Task<CommissionExportItem> ExportSettlementAsync(CommissionAdminActor actor, Guid settlementId,
string? format, CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
var settlement = await GetSettlementAsync(actor.TenantId, settlementId, cancellationToken);
var items = await growthPersistence.CommissionSettlementItems.AsNoTracking()
.Where(item => item.TenantId == actor.TenantId && item.SettlementId == settlementId)
.OrderBy(item => item.SourcePaidAt)
.ToArrayAsync(cancellationToken);
var resolvedFormat = string.Equals(format, "json", StringComparison.OrdinalIgnoreCase) ? "json" : "csv";
var content = resolvedFormat == "json"
? JsonSerializer.Serialize(items.Select(ToSourceItem))
: BuildCsv(items);
var bytes = Encoding.UTF8.GetBytes(content);
var sha = Convert.ToHexString(SHA256.HashData(bytes)).ToLowerInvariant();
var filename = $"{settlement.SettlementNo}.{resolvedFormat}";
growthPersistence.CommissionSettlementExportEvents.Add(new CommissionSettlementExportEvent
{
TenantId = actor.TenantId,
SettlementId = settlementId,
ExportedBy = actor.UserId,
ExportFormat = resolvedFormat,
Filename = filename,
RowCount = items.Length,
ContentSha256 = sha,
Metadata = JsonSerializer.SerializeToElement(new { sizeBytes = bytes.Length })
});
await AddAuditAsync(actor, "commission.settlement.exported", "commission_settlements", settlementId,
new { format = resolvedFormat, filename, rowCount = items.Length, sha }, cancellationToken);
await growthPersistence.SaveChangesAsync(cancellationToken);
return new CommissionExportItem(settlementId, filename, resolvedFormat,
resolvedFormat == "json" ? "application/json" : "text/csv", items.Length, Convert.ToBase64String(bytes),
sha, bytes.Length);
}
public async Task<CommissionSettlementItemDto> GenerateSettlementAsync(CommissionAdminActor actor,
GenerateCommissionSettlementCommand command, CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
if (command.EndDate < command.StartDate)
throw new CommissionException("Commission period was invalid.", "invalid_commission_period");
var query = new CommissionPeriodQuery(command.StartDate, command.EndDate, command.ReferrerUserId, 5000);
var candidates = (await BuildSourcesAsync(actor.TenantId, query, cancellationToken))
.Where(item => item.SettlementId is null).ToArray();
if (candidates.Length == 0)
throw new CommissionException("No unsettled commission sources found.", "commission_no_unsettled_sources");
var settings = await GetSettingsCoreAsync(actor.TenantId, cancellationToken);
var amount = candidates.Sum(item => item.CommissionAmountCents);
if (amount < settings.MinSettlementCents)
throw new CommissionException("Commission amount is below settlement minimum.", "commission_below_minimum");
var settlement = new CommissionSettlement
{
TenantId = actor.TenantId,
ReferrerUserId = command.ReferrerUserId,
GeneratedBy = actor.UserId,
SettlementNo = $"CS{DateTimeOffset.UtcNow:yyyyMMddHHmmss}{RandomNumberGenerator.GetInt32(1000, 9999)}",
Status = ParseEnum(command.Status, CommissionSettlementStatus.PendingReview, "invalid_commission_status"),
PeriodStart = command.StartDate,
PeriodEnd = command.EndDate,
SourceCount = candidates.Length,
PaidUserCount = candidates.Select(item => item.StudentUserId).Where(id => id.HasValue).Distinct().Count(),
GrossAmountCents = candidates.Sum(item => item.GrossAmountCents),
CommissionAmountCents = amount,
DefaultRate = settings.DefaultRate,
Remark = command.Remark,
Metadata = command.Metadata ?? JsonDefaults.Object()
};
growthPersistence.CommissionSettlements.Add(settlement);
foreach (var source in candidates)
growthPersistence.CommissionSettlementItems.Add(new CommissionSettlementItem
{
TenantId = actor.TenantId,
SettlementId = settlement.Id,
ReferrerUserId = source.ReferrerUserId,
StudentUserId = source.StudentUserId,
SourceType = source.SourceType,
SourceId = source.SourceId,
SourceNo = source.SourceNo,
SourcePaidAt = source.SourcePaidAt,
GrossAmountCents = source.GrossAmountCents,
CommissionRate = source.CommissionRate,
CommissionAmountCents = source.CommissionAmountCents,
RateSource = source.RateSource,
AttributionType = source.AttributionType,
Metadata = JsonSerializer.SerializeToElement(new { source = "commission_generate" })
});
await growthPersistence.SaveChangesAsync(cancellationToken);
return ToSettlementItem(settlement);
}
public async Task<CommissionSettlementItemDto> UpdateSettlementStatusAsync(CommissionAdminActor actor,
UpdateCommissionSettlementStatusCommand command, CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
var item = await GetSettlementAsync(actor.TenantId, command.SettlementId, cancellationToken);
var status = ParseEnum(command.Status, CommissionSettlementStatus.Approved, "invalid_commission_status");
if (item.Status == CommissionSettlementStatus.Paid && status != CommissionSettlementStatus.Paid)
throw new CommissionException("Paid settlement cannot be reverted.", "commission_status_invalid");
item.Status = status;
item.Remark = command.ReviewNote ?? item.Remark;
item.Metadata = command.Metadata ?? item.Metadata;
if (status is CommissionSettlementStatus.Approved or CommissionSettlementStatus.Rejected
or CommissionSettlementStatus.Cancelled)
{
item.ReviewedBy = actor.UserId;
item.ReviewedAt = DateTimeOffset.UtcNow;
}
if (status == CommissionSettlementStatus.Paid)
{
item.PaidBy = actor.UserId;
item.PaidAt = DateTimeOffset.UtcNow;
item.PaymentMethod = command.PaymentMethod ?? item.PaymentMethod;
item.PaymentAccount = command.PaymentAccount ?? item.PaymentAccount;
}
await growthPersistence.SaveChangesAsync(cancellationToken);
return ToSettlementItem(item);
}
public async Task<CommissionList<CommissionProofItem>> GetProofsAsync(CommissionAdminActor actor, Guid settlementId,
CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
await GetSettlementAsync(actor.TenantId, settlementId, cancellationToken);
var items = await growthPersistence.CommissionSettlementProofs.AsNoTracking()
.Where(item => item.TenantId == actor.TenantId && item.SettlementId == settlementId)
.OrderByDescending(item => item.CreatedAt)
.ToArrayAsync(cancellationToken);
return new CommissionList<CommissionProofItem>(items.Select(ToProofItem).ToArray());
}
public async Task<CommissionProofItem> CreateProofAsync(CommissionAdminActor actor,
CreateCommissionProofCommand command, CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
var settlement = await GetSettlementAsync(actor.TenantId, command.SettlementId, cancellationToken);
var proof = new CommissionSettlementProof
{
TenantId = actor.TenantId,
SettlementId = command.SettlementId,
SubmittedBy = actor.UserId,
ProofType = ParseEnum(command.ProofType, CommissionProofType.Payment, "invalid_commission_proof_type"),
Status = CommissionProofStatus.Submitted,
Title = command.Title ?? $"{settlement.SettlementNo} 打款凭证",
Description = command.Description,
AssetId = command.AssetId,
ExternalUrl = command.ExternalUrl,
AmountCents = command.AmountCents ?? settlement.CommissionAmountCents,
PaymentMethod = command.PaymentMethod,
PaymentAccount = command.PaymentAccount,
PaidAt = command.PaidAt,
Metadata = command.Metadata ?? JsonDefaults.Object()
};
growthPersistence.CommissionSettlementProofs.Add(proof);
await growthPersistence.SaveChangesAsync(cancellationToken);
return ToProofItem(proof);
}
public async Task<CommissionProofItem> UpdateProofStatusAsync(CommissionAdminActor actor,
UpdateCommissionProofStatusCommand command, CancellationToken cancellationToken = default)
{
await AssertAdminAsync(actor, cancellationToken);
var proof = await growthPersistence.CommissionSettlementProofs.FirstOrDefaultAsync(
item => item.TenantId == actor.TenantId && item.Id == command.ProofId, cancellationToken)
?? throw new CommissionException("Commission proof was not found.", "commission_proof_not_found");
var status = ParseEnum(command.Status, CommissionProofStatus.Approved, "invalid_commission_proof_status");
if (status == CommissionProofStatus.Submitted)
throw new CommissionException("Cannot move proof back to submitted.", "invalid_commission_proof_status");
if (proof.Status is CommissionProofStatus.Approved or CommissionProofStatus.Rejected
or CommissionProofStatus.Voided && proof.Status != status)
throw new CommissionException("Closed proof cannot change status.", "commission_proof_closed");
proof.Status = status;
proof.ReviewedBy = actor.UserId;
proof.ReviewedAt = DateTimeOffset.UtcNow;
proof.ReviewNote = command.ReviewNote ?? proof.ReviewNote;
proof.Metadata = command.Metadata ?? proof.Metadata;
await growthPersistence.SaveChangesAsync(cancellationToken);
return ToProofItem(proof);
}
private async Task<IReadOnlyCollection<SourceCandidate>> BuildSourcesAsync(Guid tenantId,
CommissionPeriodQuery query, CancellationToken cancellationToken)
{
var today = DateOnly.FromDateTime(DateTime.UtcNow);
var startDate = query.StartDate ?? today.AddDays(-29);
var endDate = query.EndDate ?? today;
var start = new DateTimeOffset(startDate.ToDateTime(TimeOnly.MinValue, DateTimeKind.Utc));
var end = new DateTimeOffset(endDate.AddDays(1).ToDateTime(TimeOnly.MinValue, DateTimeKind.Utc));
var settings = await GetSettingsCoreAsync(tenantId, cancellationToken);
var existing = await growthPersistence.CommissionSettlementItems.AsNoTracking()
.Where(item => item.TenantId == tenantId)
.Select(item => new { item.SourceType, item.SourceId, item.SettlementId })
.ToArrayAsync(cancellationToken);
var result = new List<SourceCandidate>();
var orders = await (
from order in commercePersistence.Orders.AsNoTracking()
join lead in growthPersistence.ReferralLeads.AsNoTracking()
on new { order.TenantId, StudentUserId = order.UserId!.Value } equals new
{ lead.TenantId, lead.StudentUserId }
where order.TenantId == tenantId && order.UserId != null && lead.ReferrerUserId != null &&
order.Status == OrderStatus.Paid && order.PaidAt >= start && order.PaidAt < end
select new { order, lead })
.ToArrayAsync(cancellationToken);
foreach (var row in orders)
{
if (query.ReferrerUserId.HasValue && row.lead.ReferrerUserId != query.ReferrerUserId) continue;
var rate = GetMemberRate(settings.Config, row.lead.ReferrerUserId!.Value) ?? settings.DefaultRate;
var settled = existing
.FirstOrDefault(item => item.SourceType == CommissionSourceType.Order && item.SourceId == row.order.Id)
?.SettlementId;
result.Add(new SourceCandidate(CommissionSourceType.Order, row.order.Id, row.order.OrderNo,
row.lead.ReferrerUserId.Value, row.order.UserId, row.order.AmountCents, rate,
(int)Math.Round(row.order.AmountCents * rate), CommissionRateSource.Member, settled, row.order.PaidAt,
"protected_lead"));
}
var codes = await (
from code in commercePersistence.ActivationCodes.AsNoTracking()
join batch in commercePersistence.CodeBatches.AsNoTracking()
on new { code.TenantId, code.BatchId } equals new { batch.TenantId, BatchId = (Guid?)batch.Id } into
batches
from batch in batches.DefaultIfEmpty()
where code.TenantId == tenantId && code.IsUsed && code.AgentUserId != null && code.UsedAt >= start &&
code.UsedAt < end
select new { code, batch })
.ToArrayAsync(cancellationToken);
foreach (var row in codes)
{
if (!row.code.AgentUserId.HasValue) continue;
var agentUserId = row.code.AgentUserId.Value;
if (query.ReferrerUserId.HasValue && agentUserId != query.ReferrerUserId) continue;
var rate = row.batch?.CommissionRate ?? GetMemberRate(settings.Config, agentUserId) ?? settings.DefaultRate;
var sourceAmount = row.code.UnitPriceCents ?? row.batch?.DefaultUnitPriceCents ?? 0;
var settled = existing.FirstOrDefault(item =>
item.SourceType == CommissionSourceType.ActivationCode && item.SourceId == row.code.Id)?.SettlementId;
result.Add(new SourceCandidate(CommissionSourceType.ActivationCode, row.code.Id, row.code.Code, agentUserId,
row.code.UsedBy, sourceAmount, rate, (int)Math.Round(sourceAmount * rate),
row.batch?.CommissionRate is null ? CommissionRateSource.Member : CommissionRateSource.Batch, settled,
row.code.UsedAt, "activation_code_agent"));
}
return result.OrderBy(item => item.SourcePaidAt).ToArray();
}
private static decimal? GetMemberRate(JsonElement config, Guid userId)
{
if (config.ValueKind != JsonValueKind.Object ||
!config.TryGetProperty("memberRates", out var memberRates) ||
memberRates.ValueKind != JsonValueKind.Object ||
!memberRates.TryGetProperty(userId.ToString("N"), out var memberRate) ||
memberRate.ValueKind != JsonValueKind.Object ||
!memberRate.TryGetProperty("commissionRate", out var value) ||
value.ValueKind != JsonValueKind.Number ||
!value.TryGetDecimal(out var rate))
return null;
return rate;
}
private async Task<TenantCommissionSetting> GetSettingsCoreAsync(Guid tenantId, CancellationToken cancellationToken)
{
var settings =
await growthPersistence.TenantCommissionSettings.FirstOrDefaultAsync(item => item.TenantId == tenantId,
cancellationToken);
if (settings is not null) return settings;
settings = new TenantCommissionSetting { TenantId = tenantId };
growthPersistence.TenantCommissionSettings.Add(settings);
return settings;
}
private async Task<CommissionSettlement> GetSettlementAsync(Guid tenantId, Guid settlementId,
CancellationToken cancellationToken)
{
return await growthPersistence.CommissionSettlements.FirstOrDefaultAsync(
item => item.TenantId == tenantId && item.Id == settlementId, cancellationToken)
?? throw new CommissionException("Commission settlement was not found.",
"commission_settlement_not_found");
}
private async Task AssertAdminAsync(CommissionAdminActor actor, CancellationToken cancellationToken)
{
var access = await currentAccessContext.GetAsync(cancellationToken);
if (!access.IsCurrentTenantMember ||
access.TenantId != actor.TenantId ||
access.UserId != actor.UserId ||
!access.HasTenantPermission(BackendPermissions.TenantCommissionManage))
throw new CommissionException("Commission admin access was denied.", "commission_access_denied");
}
private async Task AddAuditAsync(CommissionAdminActor actor, string action, string targetType, Guid targetId,
object details, CancellationToken cancellationToken)
{
jobsOperationsPersistence.AuditLogs.Add(new AuditLog
{
TenantId = actor.TenantId,
ActorUserId = actor.UserId,
Action = action,
TargetType = targetType,
TargetId = targetId.ToString(),
Details = JsonSerializer.SerializeToElement(details)
});
await Task.CompletedTask.WaitAsync(cancellationToken);
}
private static string BuildCsv(IEnumerable<CommissionSettlementItem> items)
{
var builder =
new StringBuilder(
"sourceType,sourceNo,referrerUserId,studentUserId,grossAmountCents,commissionRate,commissionAmountCents\n");
foreach (var item in items)
builder.Append(CultureInfo.InvariantCulture,
$"{item.SourceType},{item.SourceNo},{item.ReferrerUserId},{item.StudentUserId},{item.GrossAmountCents},{item.CommissionRate},{item.CommissionAmountCents}\n");
return builder.ToString();
}
private static CommissionSettingsItem ToSettingsItem(TenantCommissionSetting item)
{
return new CommissionSettingsItem(item.DefaultRate, item.MinSettlementCents, item.SettlementCycle.ToString(),
item.Config);
}
private static CommissionSourceItem ToSourceItem(SourceCandidate item)
{
return new CommissionSourceItem(item.SourceType.ToString(), item.SourceId, item.SourceNo, item.ReferrerUserId,
item.StudentUserId,
item.GrossAmountCents, item.CommissionRate, item.CommissionAmountCents, item.RateSource.ToString(),
item.SettlementId);
}
private static CommissionSourceItem ToSourceItem(CommissionSettlementItem item)
{
return new CommissionSourceItem(item.SourceType.ToString(), item.SourceId, item.SourceNo, item.ReferrerUserId,
item.StudentUserId,
item.GrossAmountCents, item.CommissionRate, item.CommissionAmountCents, item.RateSource.ToString(),
item.SettlementId);
}
private static CommissionSettlementItemDto ToSettlementItem(CommissionSettlement item)
{
return new CommissionSettlementItemDto(item.Id, item.SettlementNo, item.ReferrerUserId, item.Status.ToString(),
item.PeriodStart,
item.PeriodEnd, item.SourceCount, item.PaidUserCount, item.GrossAmountCents, item.CommissionAmountCents,
item.ReviewedAt, item.PaidAt);
}
private static CommissionProofItem ToProofItem(CommissionSettlementProof item)
{
return new CommissionProofItem(item.Id, item.SettlementId, item.ProofType.ToString(), item.Status.ToString(),
item.Title,
item.AssetId, item.ExternalUrl, item.AmountCents, item.PaymentMethod, item.PaymentAccount, item.PaidAt,
item.ReviewedAt);
}
private static TEnum ParseEnum<TEnum>(string? value, TEnum defaultValue, string errorCode)
where TEnum : struct, Enum
{
if (string.IsNullOrWhiteSpace(value)) return defaultValue;
var normalized = value.Replace("_", string.Empty, StringComparison.Ordinal);
foreach (var enumValue in Enum.GetValues<TEnum>())
if (string.Equals(enumValue.ToString(), normalized, StringComparison.OrdinalIgnoreCase))
return enumValue;
throw new CommissionException("Commission enum value was invalid.", errorCode);
}
private sealed record SourceCandidate(
CommissionSourceType SourceType,
Guid SourceId,
string? SourceNo,
Guid ReferrerUserId,
Guid? StudentUserId,
int GrossAmountCents,
decimal CommissionRate,
int CommissionAmountCents,
CommissionRateSource RateSource,
Guid? SettlementId,
DateTimeOffset? SourcePaidAt,
string AttributionType);
}