Add daily study missions

api/QuestionsApi/Controllers/DailyMissionsController.cs

@@ -0,0 +1,36 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using QuestionsApi.Services;
+using System.Security.Claims;
+
+namespace QuestionsApi.Controllers;
+
+[ApiController]
+[Route("api/daily-missions")]
+[Authorize(Roles = "USER,SUPER")]
+public sealed class DailyMissionsController(
+    DailyMissionStore missions, DashboardStore dashboard, QuestionStore questions) : ControllerBase
+{
+    [HttpGet]
+    public async Task<IActionResult> Get()
+    {
+        var now = DateTime.UtcNow;
+        return Ok(await missions.GetOrCreateAsync(UserId(), await dashboard.GetAsync(UserId(), now),
+            await questions.GetPublishedAsync()));
+    }
+
+    [HttpPost("{missionId}/replace")]
+    public async Task<IActionResult> Replace(string missionId)
+    {
+        try
+        {
+            var result = await missions.ReplaceAsync(UserId(), missionId);
+            return result is null ? NotFound() : Ok(result);
+        }
+        catch (ArgumentException exception) { return NotFound(exception.Message); }
+        catch (InvalidOperationException exception) { return Conflict(exception.Message); }
+    }
+
+    private string UserId() => User.FindFirstValue(ClaimTypes.NameIdentifier)
+        ?? User.FindFirstValue(ClaimTypes.Name) ?? User.Identity?.Name ?? throw new UnauthorizedAccessException();
+}

api/QuestionsApi/Controllers/QuestionsController.cs

@@ -22,6 +22,7 @@ public class QuestionsController : ControllerBase
     private readonly CreditStore _credits;
     private readonly MasteryAwardService _masteryAwards;
     private readonly StudySessionStore _studySessions;
+    private readonly DailyMissionStore _dailyMissions;
 
     public QuestionsController(
         QuestionStore questions,
@@ -34,7 +35,8 @@ public class QuestionsController : ControllerBase
         ReviewQueueStore reviewQueue,
         CreditStore credits,
         MasteryAwardService masteryAwards,
-        StudySessionStore studySessions)
+        StudySessionStore studySessions,
+        DailyMissionStore dailyMissions)
     {
         _questions = questions;
         _attempts = attempts;
@@ -47,6 +49,7 @@ public class QuestionsController : ControllerBase
         _credits = credits;
         _masteryAwards = masteryAwards;
         _studySessions = studySessions;
+        _dailyMissions = dailyMissions;
     }
 
     [HttpGet("systems")]
@@ -232,6 +235,8 @@ public class QuestionsController : ControllerBase
             creditAwards.AddRange(studySession.Summary.CoinAwards.Where(value =>
                 value.ReasonCode == CreditReasonCodes.SessionGoalComplete
                 && creditAwards.All(existing => existing.ReasonCode != value.ReasonCode)));
+        var dailyMissions = await _dailyMissions.RecordQuestionAsync(userId, record.Attempt, question);
+        if (dailyMissions is not null) creditAwards.AddRange(dailyMissions.CreditAwards);
         return Ok(new FirstQuestionAttemptResponse
         {
             QuestionExternalId = question.ExternalId,
@@ -243,7 +248,8 @@ public class QuestionsController : ControllerBase
             Credits = await _credits.GetStatusAsync(userId),
             CreditAwards = creditAwards,
             StudySessionProgress = studySession?.Progress,
-            SessionSummary = studySession?.Summary
+            SessionSummary = studySession?.Summary,
+            DailyMissions = dailyMissions?.State
         });
     }
 

api/QuestionsApi/Controllers/ReviewQueueController.cs

@@ -17,7 +17,8 @@ public sealed class ReviewQueueController(
     QuestionBookmarkStore bookmarks,
     CreditStore credits,
     MasteryAwardService masteryAwards,
-    StudySessionStore studySessions) : ControllerBase
+    StudySessionStore studySessions,
+    DailyMissionStore dailyMissions) : ControllerBase
 {
     [HttpPost("next")]
     public async Task<IActionResult> Next([FromBody] ReviewQueueNextRequest req)
@@ -107,6 +108,8 @@ public sealed class ReviewQueueController(
             awards.AddRange(studySession.Summary.CoinAwards.Where(value =>
                 value.ReasonCode == CreditReasonCodes.SessionGoalComplete
                 && awards.All(existing => existing.ReasonCode != value.ReasonCode)));
+        var missionResult = await dailyMissions.RecordReviewAsync(userId, result.Attempt);
+        if (missionResult is not null) awards.AddRange(missionResult.CreditAwards);
         return Ok(new ReviewQueueAttemptResponse
         {
             QuestionExternalId = question.ExternalId,
@@ -116,7 +119,8 @@ public sealed class ReviewQueueController(
             Credits = await credits.GetStatusAsync(userId),
             CreditAwards = awards,
             StudySessionProgress = studySession?.Progress,
-            SessionSummary = studySession?.Summary
+            SessionSummary = studySession?.Summary,
+            DailyMissions = missionResult?.State
         });
     }