Removed frontend and moved out of sln into solely csproj style

Controllers/Videos.cs

@@ -0,0 +1,160 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Xml;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace YTManager.Controllers {
+    [Produces("application/json")]
+    [Route("api/Videos")]
+    public class VideosController : Controller {
+        // Custom return type for API accesses. Done this way to ensure we
+        // always return the expected data regardless of the underlying model.
+        struct Video_ForAPI {
+            // Title of the video.
+            public string Title;
+
+            // Description of the video.
+            public string Description;
+
+            // Youtube ID of the video.
+            public string ID;
+
+            // Thumbnail URL.
+            public string Thumbnail;
+
+            // Channel on youtube that owns this video
+            public string Channel;
+
+            // Duration of the video in seconds.
+            public int Seconds;
+
+            // What tags are relevant with this video.
+            public List<string> Tags;
+
+            // Populate this struct using a model video.
+            public Video_ForAPI(Models.Video video) {
+                Title = video.Title;
+                Description = video.Description;
+                ID = video.YoutubeID;
+                Thumbnail = video.ThumbnailURL;
+                Channel = video.Channel.Title;
+                Seconds = (int)video.Duration.TotalSeconds;
+                Tags = video.Tags == null ? new List<string>() : video.Tags.ToList();
+            }
+        }
+
+        // Maximum number of entries to return per query.
+        private readonly int max_per_query = 18;
+
+        // DB context used for all these calls.
+        private readonly MediaDB db;
+
+        // Constructor to fetch the db context.
+        public VideosController(MediaDB context) => db = context;
+
+        struct Search_Query {
+            // What the duration type is.
+            public enum _Duration_Type { LessThan, GreaterThan, Unset };
+            public _Duration_Type Duration_Type;
+
+            // What the expected duration of the videos are.
+            public TimeSpan Duration;
+
+            // Remaining tokens.
+            public List<String> Remaining_Tokens;
+        }
+
+        // Searches for videos using the specified tag(s).
+        [HttpGet]
+        public async Task<IActionResult> Search() {
+            var converted = await db.Videos
+                .OrderByDescending(i => i.AddedToYT)
+                .Take(max_per_query)
+                .Include(v => v.Channel)
+                .Select(v => new Video_ForAPI(v))
+                .ToListAsync();
+
+            // Convert all the videos to what we will send back.
+            return Ok(converted);
+        }
+
+        // Searches for videos using the specified tag(s).
+        [HttpGet("{searchstr}")]
+        public async Task<IActionResult> Search([FromRoute] string searchstr) {
+            // Log this to the terminal.
+            Console.WriteLine($"{DateTime.Now} == Search request for -> {searchstr}.");
+
+            // What to use for searching videos with.
+            var parsed_query = new Search_Query();
+
+            // Assume the search string is comma seperated.
+            parsed_query.Remaining_Tokens = searchstr.Split(',').Select(t => t.Trim().ToLower()).ToList();
+
+            // Find a potential single video duration.
+            List<string> greaterthan = parsed_query.Remaining_Tokens.Where(token => token.StartsWith('>')).ToList();
+            List<string> lessthan = parsed_query.Remaining_Tokens.Where(token => token.StartsWith('<')).ToList();
+            if (greaterthan.Count() + lessthan.Count() > 1)
+                return BadRequest();
+            if (greaterthan.Count() == 1) parsed_query.Duration_Type = Search_Query._Duration_Type.GreaterThan;
+            else if (lessthan.Count() == 1) parsed_query.Duration_Type = Search_Query._Duration_Type.LessThan;
+            else parsed_query.Duration_Type = Search_Query._Duration_Type.Unset;
+            greaterthan.ForEach(g => parsed_query.Remaining_Tokens.Remove(g));
+            lessthan.ForEach(l => parsed_query.Remaining_Tokens.Remove(l));
+
+            // Attempt to parse it using ISO8601 duration.
+            if (parsed_query.Duration_Type != Search_Query._Duration_Type.Unset) {
+                string timingstr = "PT" + greaterthan
+                    .Concat(lessthan)
+                    .Select(s => s.TrimStart(new char[] { '<', '>' }))
+                    .First();
+
+                try {
+                    parsed_query.Duration = XmlConvert.ToTimeSpan(timingstr.ToUpper());
+                } catch (Exception) {
+                    return BadRequest("Failed to parse duration.");
+                }
+            }
+
+            // Get from the database all videos which satisfy the query via
+            // AND'ing all the queries.
+            var dbquery = db.Videos.Select(v => v);
+
+            // Get all videos that satisfy the time duration.
+            if (parsed_query.Duration_Type == Search_Query._Duration_Type.GreaterThan)
+                dbquery = dbquery.Where(v => v.Duration >= parsed_query.Duration);
+            else if (parsed_query.Duration_Type == Search_Query._Duration_Type.LessThan)
+                dbquery = dbquery.Where(v => v.Duration <= parsed_query.Duration);
+
+            // Get all videos that match their title, description, or channel name 
+            // with the remaining tokens.
+            parsed_query.Remaining_Tokens.ForEach(token => {
+                dbquery = dbquery.Where(v => 
+                    v.Channel.Title.ToLower().Contains(token) || 
+                    v.Title.ToLower().Contains(token) || 
+                    v.Description.ToLower().Contains(token) ||
+                    v.YoutubeID.ToLower().Contains(token));
+            });
+
+            // Get all the relevant videos.
+            var vids = await dbquery
+                .OrderByDescending(i => i.AddedToYT)
+                .Take(max_per_query)
+                .Include(v => v.Channel)
+                .ToListAsync();
+
+            // Convert them to what we will send out.
+            var converted = vids
+                .Select(v => new Video_ForAPI(v))
+                .ToList();
+
+            // Log this to the terminal.
+            Console.WriteLine($"{DateTime.Now} == Search request for -> {searchstr} found {converted.Count()} videos.");
+
+            // Convert all the videos to what we will send back.
+            return Ok(converted);
+        }
+    }
+}