DB-Project/Lecture.cshtml at main · Mujtaba6616/DB-Project · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
@{
    Layout = "~/_SiteLayout.cshtml";
    Page.Title = "Lecture Page";

    var db = Database.Open("SkillShareConnectionString");
    var userID = Convert.ToString(Session["userID"]);
    var selectCommand = "";
    var courseID = "";
    if (Convert.ToInt32(Session["count"]) < 1)
    {
        courseID = Request.QueryString["courseID"];
        Session["courseIDX"] = courseID;
        Session["count"] = Convert.ToInt32(Session["count"]) + 1;
    }
    else
    {
        courseID = Convert.ToString(Session["courseIDX"]);
    }
    //for displaying the youtube videos
    if (!string.IsNullOrEmpty(userID))
    {
        selectCommand = @"
        SELECT c.CourseID, c.Title AS CourseTitle, l.LectureID, l.Title AS LectureTitle, l.Description, l.VideoURL, l.LectureOrder
        FROM [USER] u
        INNER JOIN ENROLLMENT e ON u.UserID = e.UserID
        INNER JOIN COURSE c ON e.CourseID = c.CourseID
        INNER JOIN LECTURE l ON c.CourseID = l.CourseID
        WHERE u.UserID=@0 and c.CourseID=@1";
    }
    else
    {
        selectCommand = "Select * from [User] where 1=0 AND userID=@0";
    }
    var lecturesData = db.Query(selectCommand, userID, courseID);

    //// Pagination (make video pages within the current page)
    var pageIndex = Request.QueryString["page"] != null ? Convert.ToInt32(Request.QueryString["page"]) : 1;
    var pageSize = 1; // Adjust as needed
    var totalItems = lecturesData.Count();
    var totalPages = (int)Math.Ceiling((double)totalItems / pageSize);
    var offset = (pageIndex - 1) * pageSize;
    var pagedData = lecturesData.Skip(offset).Take(pageSize);


    //incrementing the lectures taken upon pressing completed lecture button
    var selectQuery = "";
    bool lecturesCompleted = false;
    if (IsPost)
    {
        if (!string.IsNullOrEmpty(userID))
        {
            selectQuery = @"select * from COURSE c
	        inner join ENROLLMENT e
	        on c.CourseID=e.CourseID
	        where c.CourseID=@0 AND UserID=@1";
            var selectedData = db.QuerySingle(selectQuery, courseID, userID);
            if (selectedData.NumberOfLecturesCompleted < selectedData.TotalNumberOfLectures)
            {
                //increment the lectures completed
                var updateLecturesQuery = @"update ENROLLMENT
	            set NumberOfLecturesCompleted=NumberOfLecturesCompleted+1
	            where CourseID=@0 AND UserID=@1";
                db.Execute(updateLecturesQuery, courseID, userID);
            }
            else
            {
                //print that Lectures already completed
                lecturesCompleted = true;
            }
        }
    }
}


<head>
    <style>
        .lecture-container {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 80vh;
        }
        .lecture {
            max-width: 1000px;
            padding: 20px;
            border: 1px solid #ccc;
            border-radius: 10px;
            background-color: #E9967A;
            text-align: center;
        }
        .lecture video {
            width: 100%;
            margin-bottom: 10px;
        }
        .lecture .url {
            font-size: 14px;
            color: #666;
        }
    </style>
</head>


<body>
    <!--Header start-->
    <div class="container-fluid bg-primary py-5 mb-5 page-header">
        <div class="container py-5">
            <div class="row justify-content-center">
                <div class="col-lg-10 text-center">
                    <h1 class="display-3 text-white animated slideInDown">Lectures</h1>
                    <nav aria-label="breadcrumb">
                        <ol class="breadcrumb justify-content-center">
                            <li class="breadcrumb-item text-white active" aria-current="page">Lectures</li>
                        </ol>
                    </nav>
                </div>
            </div>
        </div>
    </div>
    <!--Header End-->
    <!-- Lecture content section -->
    <div class="container-xxl py-5">
        <div class="container">
            <div class="text-center wow fadeInUp" data-wow-delay="0.1s">
                <h6 class="section-title bg-white text-center text-primary px-3">Online Lectures</h6>
                <h1 class="mb-5">Lectures</h1>
            </div>
            <!-- Display lecture content -->
            @foreach (var lecture in pagedData)
            {
                <div class="lecture-container">
                    <div class="lecture">
                        <h3>@lecture.LectureTitle</h3>
                        <p>@lecture.Description</p>
                        <div class="video-container">
                            <iframe width="800" height="450" src="https://www.youtube.com/embed/@GetYouTubeVideoId(lecture.VideoURL)" frameborder="0" allowfullscreen></iframe>
                        </div>
                    </div>
                </div>
            }
            <!-- Pagination -->
            @if (totalPages > 1)
            {
                <nav aria-label="Page navigation">
                    <ul class="pagination justify-content-center">
                        @for (var i = 1; i <= totalPages; i++)
                        {
                            <li class="page-item @(i == pageIndex ? "active" : "")">
                                <a class="page-link" href="?page=@i">@i</a>
                            </li>
                        }
                    </ul>
                </nav>
            }
        </div>
    </div>

    <div class="container text-center">
        <form method="post">
            <button type="submit" class="btn btn-primary">Completed one more lecture!</button>
        </form>
    </div>

    @if (!string.IsNullOrEmpty(userID) && lecturesCompleted==true)
    {
        <div class="alert alert-warning container" role="alert">
            Lectures are already completed for this course.
        </div>
    }

    @functions {
        public string GetYouTubeVideoId(string youtubeUrl)
        {
            var uri = new Uri(youtubeUrl);
            var query = uri.Query;
            var queryDictionary = System.Web.HttpUtility.ParseQueryString(query);
            var videoId = queryDictionary["v"];
            return videoId;
        }
    }
</body>