[FA-9] Need to add persistence layer

FictionArchive.Service.SchedulerService/Services/JobManagerService.cs

@@ -0,0 +1,99 @@
+using System.Data;
+using FictionArchive.Service.SchedulerService.Models;
+using FictionArchive.Service.SchedulerService.Models.JobTemplates;
+using FictionArchive.Service.Shared.Services.EventBus;
+using Quartz;
+using Quartz.Impl.Matchers;
+
+namespace FictionArchive.Service.SchedulerService.Services;
+
+public class JobManagerService
+{
+    private readonly ILogger<JobManagerService> _logger;
+    private readonly ISchedulerFactory _schedulerFactory;
+
+    public JobManagerService(ILogger<JobManagerService> logger, ISchedulerFactory schedulerFactory)
+    {
+        _logger = logger;
+        _schedulerFactory = schedulerFactory;
+    }
+
+    public async Task<List<SchedulerJob>> GetScheduledJobs()
+    {
+        var scheduler = await _schedulerFactory.GetScheduler();
+        var groups = await scheduler.GetJobGroupNames();
+        var result = new List<(IJobDetail Job, IReadOnlyCollection<ITrigger> Triggers)>();
+
+        foreach (var group in groups)
+        {
+            var jobKeys = await scheduler.GetJobKeys(GroupMatcher<JobKey>.GroupEquals(group));
+            foreach (var jobKey in jobKeys)
+            {
+                var jobDetail = await scheduler.GetJobDetail(jobKey);
+                var triggers = await scheduler.GetTriggersOfJob(jobKey);
+        
+                result.Add((jobDetail, triggers));
+            }
+        }
+        
+        return result.Select(tuple => new SchedulerJob()
+        {
+            JobKey = tuple.Job.Key,
+            Description = tuple.Job.Description,
+            JobTypeName = tuple.Job.JobType.FullName,
+            JobData = tuple.Job.JobDataMap.ToDictionary(kv => kv.Key, kv => kv.Value.ToString()),
+            CronSchedule = tuple.Triggers.Where(trigger => trigger is ICronTrigger).Select(trigger => (trigger as ICronTrigger).CronExpressionString).ToList()
+        }).ToList();
+    }
+
+    public async Task<SchedulerJob> ScheduleEventJob(string? jobKey, string? description, string eventType, string eventData, string cronSchedule)
+    {
+        var scheduler = await _schedulerFactory.GetScheduler();
+
+        if (await scheduler.GetJobDetail(new JobKey(jobKey)) != null)
+        {
+            throw new DuplicateNameException("A job with the same key already exists.");
+        }
+
+        jobKey ??= Guid.NewGuid().ToString();
+        var jobData = new JobDataMap
+        {
+            { EventJobTemplate.EventTypeParameter, eventType },
+            { EventJobTemplate.EventDataParameter, eventData }
+        };
+        var job = JobBuilder.Create<EventJobTemplate>()
+            .WithIdentity(jobKey)
+            .WithDescription(description ?? $"Fires off an event on a set schedule")
+            .SetJobData(jobData)
+            .Build();
+        var trigger = TriggerBuilder.Create()
+            .WithIdentity(jobKey)
+            .WithCronSchedule(cronSchedule)
+            .StartNow()
+            .Build();
+
+        await scheduler.ScheduleJob(job, trigger);
+
+        return new SchedulerJob()
+        {
+            CronSchedule = new List<string> { cronSchedule },
+            Description = description,
+            JobKey = new JobKey(jobKey),
+            JobTypeName = typeof(EventJobTemplate).FullName,
+            JobData = jobData.ToDictionary(kv => kv.Key, kv => kv.Value.ToString())
+        };
+    }
+
+    public async Task<bool> TriggerJob(string jobKey)
+    {
+        var scheduler = await _schedulerFactory.GetScheduler();
+        await scheduler.TriggerJob(new JobKey(jobKey));
+        return true;
+    }
+
+    public async Task<bool> DeleteJob(string jobKey)
+    {
+        var scheduler = await _schedulerFactory.GetScheduler();
+        return await scheduler.DeleteJob(new JobKey(jobKey));
+    }
+}