file scanner

AZKi Server/AZKi Server.csproj

@@ -4,6 +4,7 @@
     <TargetFramework>net9.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
+    <RootNamespace>AZKiServer</RootNamespace>
   </PropertyGroup>
 
   <ItemGroup>
@@ -12,6 +13,7 @@
 
   <ItemGroup>
     <PackageReference Include="Grpc.AspNetCore" Version="2.64.0" />
+    <PackageReference Include="MaybeError" Version="1.2.0" />
     <PackageReference Include="MongoDB.Driver" Version="3.5.2" />
   </ItemGroup>
 

AZKi Server/Models/MediaEntry.cs

@@ -0,0 +1,74 @@
+using MaybeError;
+using MaybeError.Errors;
+
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+using System.Text.RegularExpressions;
+
+namespace AZKiServer.Models;
+
+public partial class MediaEntry
+{
+	[BsonId]
+	public ObjectId Id { get; set; }
+	public MediaType Type { get; set; }
+	public required string Filepath { get; set; }
+	public DateTime Date { get; set; }
+	public byte CameraId { get; set; }
+
+	public static Maybe<MediaEntry> Parse(string relativePath)
+	{
+		var filename = Path.GetFileName(relativePath);
+
+		var match = FileParser().Match(filename);
+		if (!match.Success)
+			return new Error("Failed to parse file name");
+
+		try
+		{
+			var src = match.Groups["src"];
+			var cam = match.Groups["cam"];
+			var date = match.Groups["date"];
+			var ext = match.Groups["ext"];
+
+			return new MediaEntry
+			{
+				CameraId = byte.Parse(cam.Value),
+				Filepath = relativePath,
+				Date = ParseDate(date.Value),
+				Type = ext.Value switch
+				{
+					"mp4" => MediaType.Video,
+					_ => MediaType.Image
+				}
+
+			};
+
+		}catch(Exception ex)
+		{
+			return ex;
+		}
+	}
+
+	private static DateTime ParseDate(string dateString)
+	{
+		var year = dateString[0..4];
+		var month = dateString[4..6];
+		var day = dateString[6..8];
+		var hour = dateString[8..10];
+		var minute = dateString[10..12];
+		var sec = dateString[12..];
+		return new DateTime(int.Parse(year), int.Parse(month), int.Parse(day), int.Parse(hour), int.Parse(minute), int.Parse(sec), DateTimeKind.Local);
+	}
+
+	[GeneratedRegex("(?'src'.+)_(?'cam'\\d+)_(?'date'\\d+).(?'ext'\\w+)")]
+	private static partial Regex FileParser();
+}
+
+
+public enum MediaType
+{
+	Video,
+	Image
+}

AZKi Server/Services/FileScannerService.cs

@@ -1,16 +1,55 @@
 
+using AZKiServer.Models;
+
 namespace AZKiServer.Services;
 
-public class FileScannerService : IHostedService
+public class FileScannerService(MediaService mediaService, IConfiguration config, ILogger<FileScannerService> logger) : IHostedService, IDisposable
 {
+	private Timer? _timer;
+
+	public void Dispose()
+	{
+		_timer?.Dispose();
+	}
+
 	public Task StartAsync(CancellationToken cancellationToken)
 	{
-		throw new NotImplementedException();
+		var path = config["SCAN_PATH"];
+		if (string.IsNullOrWhiteSpace(path))
+			return Task.CompletedTask;
+		_timer = new Timer((_) =>
+		{
+			ScanFilesAsync(path).Wait();
+		}, null, TimeSpan.FromMinutes(1), TimeSpan.FromHours(1));
+		return Task.CompletedTask;
 	}
 
 	public Task StopAsync(CancellationToken cancellationToken)
 	{
-		throw new NotImplementedException();
+		_timer?.Dispose();
+		return Task.CompletedTask;
 	}
 
+
+	private async Task ScanFilesAsync(string path)
+	{
+		try
+		{
+			var files = Directory.GetFiles(path, "*", SearchOption.AllDirectories);
+			var existingFiles = await mediaService.GetExistingFilePathsAsync();
+			var entries = new List<MediaEntry>();
+			foreach (var filePath in files)
+			{
+				var relativePath = Path.GetRelativePath(path, filePath);
+				if (existingFiles.Contains(relativePath))
+					continue;
+				entries.Add(MediaEntry.Parse(relativePath));
+			}
+			await mediaService.AddMediaBulkAsync(entries);
+		}
+		catch (Exception ex)
+		{
+			logger.LogError(ex, "Failed to read directory contents");
+		}
+	}
 }

AZKi Server/Services/MediaService.cs

@@ -1,6 +1,30 @@
-namespace AZKiServer.Services;
+using AZKiServer.Models;
 
-public class MediaService
+using MongoDB.Driver;
+
+using System.Collections.Frozen;
+
+namespace AZKiServer.Services;
+
+public class MediaService(IMongoDatabase db)
 {
+	public readonly IMongoCollection<MediaEntry> _entries = db.GetCollection<MediaEntry>("media");
+	public async Task<FrozenSet<string>> GetExistingFilePathsAsync(CancellationToken cancellationToken = default)
+	{
+		var files = await _entries.Find("{}").Project(m => m.Filepath).ToListAsync(cancellationToken);
+		return files.ToFrozenSet();
+	}
 
+	public async Task AddMediaBulkAsync(List<MediaEntry> entries, CancellationToken cancellationToken = default)
+	{
+		await _entries.InsertManyAsync(entries, cancellationToken: cancellationToken);
+	}
+
+	public class IndexCreation : BackgroundService
+	{
+		protected override Task ExecuteAsync(CancellationToken stoppingToken)
+		{
+			throw new NotImplementedException();
+		}
+	}
 }

AZKi Server/Utilz/DateUtils.cs

@@ -0,0 +1,102 @@
+namespace AZKiServer.Utilz;
+
+public enum DateInterval
+{
+	Daily,
+	Weekly,
+	Monthly,
+	Yearly,
+	All,
+}
+
+public static class DateUtils
+{
+	public static TimeSpan ToUnixTime(this DateTime date)
+	{
+		return date - DateTime.UnixEpoch;
+	}
+
+	public static DateTime SnapToYear(this DateTime date)
+	{
+		return new DateTime(date.Year, 1, 1, 0, 0, 0, date.Kind);
+	}
+
+	public static DateTimeOffset SnapToYear(this DateTimeOffset date)
+	{
+		return new DateTimeOffset(date.Year, 1, 1, 0, 0, 0, date.Offset);
+	}
+
+	public static DateTime SnapToMonth(this DateTime date)
+	{
+		return new DateTime(date.Year, date.Month, 1, 0, 0, 0, date.Kind);
+	}
+
+	public static DateTimeOffset SnapToMonth(this DateTimeOffset date)
+	{
+		return new DateTimeOffset(date.Year, date.Month, 1, 0, 0, 0, date.Offset);
+	}
+
+	public static DateTime SnapToWeek(this DateTime date)
+	{
+		var d = new DateTime(date.Year, date.Month, date.Day, 0, 0, 0, date.Kind);
+		if (date.DayOfWeek == DayOfWeek.Sunday)
+			return d;
+		else
+			return d.AddDays(-(int)date.DayOfWeek);
+	}
+
+	public static DateTimeOffset SnapToWeek(this DateTimeOffset date)
+	{
+		var d = new DateTimeOffset(date.Year, date.Month, date.Day, 0, 0, 0, date.Offset);
+		if (date.DayOfWeek == DayOfWeek.Sunday)
+			return d;
+		else
+			return d.AddDays(-(int)date.DayOfWeek);
+	}
+
+	public static (DateTime from, DateTime to) ToInterval(this DateTime date, DateInterval internval)
+	{
+		return internval switch
+		{
+			DateInterval.Daily => (date, date.AddDays(1)),
+			DateInterval.Weekly => (date, date.AddDays(7)),
+			DateInterval.Monthly => (date, date.AddMonths(1)),
+			DateInterval.Yearly => (date, date.AddYears(1)),
+			DateInterval.All => (DateTime.MinValue, DateTime.MaxValue),
+			_ => throw new InvalidOperationException(),
+		};
+	}
+
+	public static (DateTimeOffset from, DateTimeOffset to) ToInterval(this DateTimeOffset date, DateInterval internval)
+	{
+		return internval switch
+		{
+			DateInterval.Daily => (date, date.AddDays(1)),
+			DateInterval.Weekly => (date, date.AddDays(7)),
+			DateInterval.Monthly => (date, date.AddMonths(1)),
+			DateInterval.Yearly => (date, date.AddYears(1)),
+			DateInterval.All => (DateTime.MinValue, DateTime.MaxValue),
+			_ => throw new InvalidOperationException(),
+		};
+	}
+
+	public static TimeSpan Days(this int days) => TimeSpan.FromDays(days);
+
+	public static TimeSpan Days(this float days) => TimeSpan.FromDays(days);
+
+	public static TimeSpan Hours(this int hours) => TimeSpan.FromHours(hours);
+
+	public static TimeSpan Hours(this float hours) => TimeSpan.FromHours(hours);
+
+	public static TimeSpan Minutes(this int minutes) => TimeSpan.FromMinutes(minutes);
+
+	public static TimeSpan Minutes(this float minutes) => TimeSpan.FromMinutes(minutes);
+
+	public static TimeSpan Seconds(this int seconds) => TimeSpan.FromSeconds(seconds);
+
+	public static TimeSpan Seconds(this float seconds) => TimeSpan.FromSeconds(seconds);
+
+	public static TimeSpan Miliseconds(this int miliseconds) => TimeSpan.FromMilliseconds(miliseconds);
+
+	public static TimeSpan Miliseconds(this float miliseconds) => TimeSpan.FromMilliseconds(miliseconds);
+}

AZKi Server/appsettings.Development.json

@@ -1,8 +1,10 @@
 {
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  }
+	"Logging": {
+		"LogLevel": {
+			"Default": "Information",
+			"Microsoft.AspNetCore": "Warning"
+		}
+	},
+	"SCAN_LOCATION": "O:/cctv",
+	"DB_STRING": "mongodb://NinoIna:27017"
 }