feat: add student video and profile experience

Tiku.Api/Contracts/VideoDtos.cs

@@ -0,0 +1,74 @@
+using System.ComponentModel.DataAnnotations;
+using System.Text.Json;
+using Tiku.Application.Assets;
+
+namespace Tiku.Api.Contracts;
+
+public sealed class VideoSearchQueryDto
+{
+    [StringLength(100)]
+    public string? Keyword { get; set; }
+
+    public Guid? SubjectId { get; set; }
+
+    [Range(1, 200)]
+    public int? Limit { get; set; }
+
+    public VideoSearchQuery ToQuery() => new(Keyword, SubjectId, Limit);
+}
+
+public sealed class VideoPlayDto
+{
+    [Required]
+    public Guid VideoId { get; set; }
+
+    public Guid? QuestionId { get; set; }
+
+    public VideoPlayCommand ToCommand() => new(VideoId, QuestionId);
+}
+
+public sealed class VideoProgressDto
+{
+    [Required]
+    public Guid VideoId { get; set; }
+
+    public Guid? QuestionId { get; set; }
+
+    [Range(0, int.MaxValue)]
+    public int PositionSeconds { get; set; }
+
+    [Range(0, int.MaxValue)]
+    public int? DurationSeconds { get; set; }
+
+    [Range(0, int.MaxValue)]
+    public int? WatchedSeconds { get; set; }
+
+    public bool? IsCompleted { get; set; }
+
+    public JsonElement Metadata { get; set; } = JsonSerializer.SerializeToElement(new { });
+
+    public VideoProgressCommand ToCommand()
+    {
+        return new VideoProgressCommand(
+            VideoId,
+            QuestionId,
+            PositionSeconds,
+            DurationSeconds,
+            WatchedSeconds,
+            IsCompleted,
+            Metadata);
+    }
+}
+
+public sealed class QuestionVideoQueryDto
+{
+    public Guid? QuestionId { get; set; }
+
+    [MaxLength(100)]
+    public IReadOnlyCollection<Guid>? QuestionIds { get; set; }
+
+    [Range(1, 500)]
+    public int? Limit { get; set; }
+
+    public QuestionVideoQuery ToQuery() => new(QuestionId, QuestionIds, Limit);
+}