Added inital job entity and services. Added released works API integration.

JSMR.Infrastructure/Data/Repositories/Jobs/JobRepository.cs

@@ -0,0 +1,52 @@
+using JSMR.Application.Jobs;
+using JSMR.Domain.Entities;
+using JSMR.Domain.Enums;
+using Microsoft.EntityFrameworkCore;
+
+namespace JSMR.Infrastructure.Data.Repositories.Jobs;
+
+public sealed class JobRepository(AppDbContext dbContext) : IJobRepository
+{
+    public async Task<Job> AddAsync(Job job, CancellationToken cancellationToken)
+    {
+        await dbContext.Jobs.AddAsync(job, cancellationToken);
+
+        return job;
+    }
+
+    public Task<Job?> GetByIdAsync(int id, CancellationToken cancellationToken)
+        => dbContext.Jobs.FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
+
+    public async Task<IReadOnlyList<Job>> GetRecentAsync(int take, CancellationToken cancellationToken)
+        => await dbContext.Jobs
+            .OrderByDescending(x => x.CreatedUtc)
+            .Take(take)
+            .ToListAsync(cancellationToken);
+
+    public Task<bool> AnyRunningAsync(CancellationToken cancellationToken)
+        => dbContext.Jobs.AnyAsync(x => x.Status == JobStatus.Running, cancellationToken);
+
+    public async Task<Job?> TryClaimNextQueuedAsync(string workerName, CancellationToken cancellationToken)
+    {
+        Job? next = await dbContext.Jobs
+            .Where(x => x.Status == JobStatus.Queued)
+            .OrderBy(x => x.CreatedUtc)
+            .FirstOrDefaultAsync(cancellationToken);
+
+        if (next is null)
+            return null;
+
+        next.Status = JobStatus.Running;
+        next.StartedUtc = DateTime.UtcNow;
+        next.HeartbeatUtc = DateTime.UtcNow;
+        next.WorkerName = workerName;
+        next.AttemptCount += 1;
+
+        await dbContext.SaveChangesAsync(cancellationToken);
+
+        return next;
+    }
+
+    public Task SaveChangesAsync(CancellationToken ct)
+        => dbContext.SaveChangesAsync(ct);
+}