From 3b2580391137e284068c04afd0a03c27602f925d Mon Sep 17 00:00:00 2001
From: "branislav.radivojevic" <wafflemynxyt@gmail.com>
Date: Mon, 5 Dec 2022 20:15:57 +0100
Subject: osnovna statistika korisnika

---
 Backend/Api/Api/Controllers/UserController.cs | 23 +++++++++++++++++
 Backend/Api/Api/Interfaces/IPostService.cs    |  1 +
 Backend/Api/Api/Models/User.cs                | 15 +++++++++++
 Backend/Api/Api/Services/PostService.cs       | 37 +++++++++++++++++++++++++++
 Backend/Api/Api/Services/UserService.cs       |  1 +
 5 files changed, 77 insertions(+)

diff --git a/Backend/Api/Api/Controllers/UserController.cs b/Backend/Api/Api/Controllers/UserController.cs
index 4d7905a..97f2f8b 100644
--- a/Backend/Api/Api/Controllers/UserController.cs
+++ b/Backend/Api/Api/Controllers/UserController.cs
@@ -123,5 +123,28 @@ namespace Api.Controllers
         {
             return Ok(await _userService.GetMyFollowers());
         }
+
+        [HttpGet("profile/stats")]
+        [Authorize(Roles = "User")]
+        public async Task<ActionResult<UserStats>> SelfStats()
+        {
+            var id = await _userService.UserIdFromJwt();
+            var tosend = await _postService.UserStats(id);
+            if (tosend != null)
+                return Ok(tosend);
+            return BadRequest();
+        }
+        [HttpGet("{username}/profile/stats")]
+        [Authorize(Roles = "User")]
+        public async Task<ActionResult<UserStats>> GetStats(string username)
+        {
+            var rez = await _userService.GetUserData(username);
+            if (rez == null)
+                return BadRequest();
+            var tosend = await _postService.UserStats(rez._id);
+            if (tosend != null)
+                return Ok(tosend);
+            return BadRequest();
+        }
     }
 }
diff --git a/Backend/Api/Api/Interfaces/IPostService.cs b/Backend/Api/Api/Interfaces/IPostService.cs
index 84d32ef..c854601 100644
--- a/Backend/Api/Api/Interfaces/IPostService.cs
+++ b/Backend/Api/Api/Interfaces/IPostService.cs
@@ -30,5 +30,6 @@ namespace Api.Interfaces
         Task<Boolean> addRemoveFavourite(string postId);
         Task<List<Trending>> TrendingTags();
         Task<List<PostSend>> BestPostForAllLocationsInRadius(Coords coords, double radius);
+        Task<UserStats> UserStats(string userid);
     }
 }
\ No newline at end of file
diff --git a/Backend/Api/Api/Models/User.cs b/Backend/Api/Api/Models/User.cs
index 6c777e7..cf16dbe 100644
--- a/Backend/Api/Api/Models/User.cs
+++ b/Backend/Api/Api/Models/User.cs
@@ -72,4 +72,19 @@ namespace Api.Models
 
 
     }
+
+    public class UserStats
+    {
+        public int totalViews { get; set; }
+        public int numberOfPosts { get; set; }
+        public int numberOfRatingsOnPosts { get; set; }
+        public double averagePostRatingOnPosts {get; set; }
+        public List<MonthlyViews> monthlyViews { get; set; }
+    }
+
+    public class MonthlyViews
+    {
+        public int month { get; set; }
+        public int views { get; set; }
+    }
 }
diff --git a/Backend/Api/Api/Services/PostService.cs b/Backend/Api/Api/Services/PostService.cs
index 6f7c455..6d28206 100644
--- a/Backend/Api/Api/Services/PostService.cs
+++ b/Backend/Api/Api/Services/PostService.cs
@@ -651,6 +651,43 @@ namespace Api.Services
             }
             return tosend;
         }
+
+        public async Task<UserStats> UserStats(string userid)
+        {
+            var posts = await GetUsersPosts(userid);
+            var stats = new UserStats();
+            double ratingsum = 0;
+            stats.averagePostRatingOnPosts = 0;
+            stats.numberOfRatingsOnPosts = 0;
+            stats.numberOfPosts = 0;
+            stats.totalViews = 0;
+            stats.monthlyViews = new List<MonthlyViews>();
+
+           
+            if(posts != null)
+            {
+                for(int i = 1; i <= 12; i++)
+                {
+                    var novi = new MonthlyViews();
+                    novi.month = i;
+                    novi.views = 0;
+                    stats.monthlyViews.Add(novi);
+                }
+                
+                foreach (var post in posts)
+                {
+                    var month = post.createdAt.Month;
+                    stats.monthlyViews.FirstOrDefault(x => x.month == month).views += post.views;
+                    stats.totalViews += post.views;
+                    stats.numberOfRatingsOnPosts += post.ratingscount;
+                    stats.numberOfPosts++;
+                    ratingsum += post.ratings * post.ratingscount;
+                }
+                if(stats.numberOfRatingsOnPosts > 0) //don't forget to check div by 0 jesus
+                    stats.averagePostRatingOnPosts = ratingsum / stats.numberOfRatingsOnPosts;
+            }
+            return stats;
+        }
     }
     
 }
diff --git a/Backend/Api/Api/Services/UserService.cs b/Backend/Api/Api/Services/UserService.cs
index ec67729..666dd98 100644
--- a/Backend/Api/Api/Services/UserService.cs
+++ b/Backend/Api/Api/Services/UserService.cs
@@ -663,6 +663,7 @@ namespace Api.Services
             
             return null;
         }
+
     }
     
 }
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