Files

109 lines
3.8 KiB
C#

using Dapper;
using Microsoft.EntityFrameworkCore;
using Npgsql;
public class OperationsService : IOperationsService
{
private readonly AppDbContext _db;
private readonly IClinicalSyncService _sync;
public OperationsService(AppDbContext db, IClinicalSyncService sync)
{
_db = db;
_sync = sync;
}
public async Task<IReadOnlyList<GatewayFleetItem>> GetGatewayFleetAsync(
GatewayFleetFilter filter, CancellationToken ct)
{
var query = _db.WardGateways
.AsNoTracking()
.Include(g => g.Site)
.AsQueryable();
if (!string.IsNullOrEmpty(filter.Status))
{
var status = GatewayStatusExtensions.FromDbString(filter.Status);
query = query.Where(g => g.Status == status);
}
if (filter.SiteId is Guid siteId)
query = query.Where(g => g.SiteId == siteId);
var now = DateTimeOffset.UtcNow;
return await query
.OrderByDescending(g => g.Status)
.ThenByDescending(g => g.LastHeartbeatAt == null)
.ThenByDescending(g => g.LastHeartbeatAt)
.Select(g => new GatewayFleetItem(
g.Id,
g.GatewayCode,
g.Department,
g.Site.SiteCode,
g.Site.Name,
g.Status.ToDbString(),
g.ReportedBufferDepth,
g.LastHeartbeatAt,
g.LastSyncAt,
g.LastHeartbeatAt == null
? null
: (double?)(now - g.LastHeartbeatAt.Value).TotalMinutes))
.ToListAsync(ct);
}
public async Task<GatewayDetailResponse> GetGatewayDetailAsync(Guid gatewayId, CancellationToken ct)
{
var fleet = await GetGatewayFleetAsync(new GatewayFleetFilter(null, null), ct);
var gateway = fleet.FirstOrDefault(g => g.Id == gatewayId)
?? throw new NotFoundException("Gateway not found.", "GATEWAY_NOT_FOUND");
var siteId = await _db.WardGateways
.Where(g => g.Id == gatewayId)
.Select(g => g.SiteId)
.FirstAsync(ct);
var history = await _sync.GetSyncHistoryAsync(siteId, gatewayId, 10, ct);
var lastConflictBatch = await _db.ClinicalSyncBatches
.AsNoTracking()
.Where(b => b.GatewayId == gatewayId && b.Status == ClinicalSyncBatchStatus.Conflict)
.OrderByDescending(b => b.SubmittedAt)
.Include(b => b.Conflicts)
.FirstOrDefaultAsync(ct);
var pendingConflicts = lastConflictBatch?.Conflicts.Count ?? 0;
return new GatewayDetailResponse(gateway, history, pendingConflicts);
}
public async Task<SiteGatewaySummaryResponse> GetSiteSummaryAsync(Guid siteId, CancellationToken ct)
{
var siteExists = await _db.ClinicalSites.AnyAsync(s => s.Id == siteId, ct);
if (!siteExists)
throw new NotFoundException("Site not found.", "SITE_NOT_FOUND");
await using var conn = new NpgsqlConnection(_db.Database.GetConnectionString());
await conn.OpenAsync(ct);
const string sql = """
SELECT
COUNT(*) AS TotalGateways,
COUNT(*) FILTER (WHERE status = 'ONLINE') AS Online,
COUNT(*) FILTER (WHERE status = 'DEGRADED') AS Degraded,
COUNT(*) FILTER (WHERE status = 'OFFLINE') AS Offline,
COALESCE(SUM(reported_buffer_depth), 0) AS TotalBufferedEvents
FROM ward_gateways
WHERE site_id = @SiteId
""";
var row = await conn.QuerySingleAsync(sql, new { SiteId = siteId });
return new SiteGatewaySummaryResponse(
siteId,
(int)row.totalgateways,
(int)row.online,
(int)row.degraded,
(int)row.offline,
(int)row.totalbufferedevents);
}
}