✨ Poll answer and un-answer

DysonNetwork.Sphere/Poll/Poll.cs

@@ -20,6 +20,28 @@ public class Poll : ModelBase
     public Publisher.Publisher Publisher { get; set; } = null!;
 }
 
+public class PollWithUserAnswer : Poll
+{
+    public PollAnswer? UserAnswer { get; set; }
+
+    public static PollWithUserAnswer FromPoll(Poll poll, PollAnswer? userAnswer = null)
+    {
+        return new PollWithUserAnswer
+        {
+            Id = poll.Id,
+            Title = poll.Title,
+            Description = poll.Description,
+            EndedAt = poll.EndedAt,
+            PublisherId = poll.PublisherId,
+            Publisher = poll.Publisher,
+            Questions = poll.Questions,
+            CreatedAt = poll.CreatedAt,
+            UpdatedAt = poll.UpdatedAt,
+            UserAnswer = userAnswer
+        };
+    }
+}
+
 public enum PollQuestionType
 {
     SingleChoice,

DysonNetwork.Sphere/Poll/PollController.cs

@@ -1,3 +1,4 @@
+using System.Text.Json;
 using DysonNetwork.Shared.Proto;
 using DysonNetwork.Sphere.Publisher;
 using Microsoft.AspNetCore.Authorization;
@@ -11,6 +12,63 @@ namespace DysonNetwork.Sphere.Poll;
 [Route("/api/polls")]
 public class PollController(AppDatabase db, PollService polls, PublisherService pub) : ControllerBase
 {
+    [HttpGet("{id:guid}")]
+    public async Task<ActionResult<PollWithUserAnswer>> GetPoll(Guid id)
+    {
+        var poll = await db.Polls
+            .Include(p => p.Questions)
+            .FirstOrDefaultAsync(p => p.Id == id);
+        if (poll is null) return NotFound("Poll not found");
+        var pollWithAnswer = PollWithUserAnswer.FromPoll(poll);
+
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser) return Ok(pollWithAnswer);
+        
+        var accountId = Guid.Parse(currentUser.Id);
+        var answer = await polls.GetPollAnswer(id, accountId);
+        if (answer is not null)
+            pollWithAnswer.UserAnswer = answer;
+
+        return Ok(pollWithAnswer);
+    }
+
+    public class PollAnswerRequest
+    {
+        public required Dictionary<string, JsonElement> Answer { get; set; }
+    }
+    
+    [HttpPost("{id:guid}/answer")]
+    [Authorize]
+    public async Task<ActionResult<PollAnswer>> AnswerPoll(Guid id, [FromBody] PollAnswerRequest request)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser) return Unauthorized();
+        var accountId = Guid.Parse(currentUser.Id);
+        try
+        {
+            return await polls.AnswerPoll(id, accountId, request.Answer);
+        }
+        catch (Exception ex)
+        {
+            return BadRequest(ex.Message);
+        }
+    }
+    
+    [HttpDelete("{id:guid}/answer")]
+    [Authorize]
+    public async Task<IActionResult> DeletePollAnswer(Guid id)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser) return Unauthorized();
+        var accountId = Guid.Parse(currentUser.Id);
+        try
+        {
+            await polls.UnAnswerPoll(id, accountId);
+            return NoContent();
+        }
+        catch (Exception ex)
+        {
+            return BadRequest(ex.Message);
+        }
+    }
+
     [HttpGet("me")]
     [Authorize]
     public async Task<ActionResult<List<Poll>>> ListPolls(