implemented requests

.gitignore

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+bin/
+obj/

.idea/.idea.PlatonusSchedule/.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Rider ignored files
+/contentModel.xml
+/modules.xml
+/projectSettingsUpdater.xml
+/.idea.PlatonusSchedule.iml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/.idea.PlatonusSchedule/.idea/dictionaries/User.xml

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+<component name="ProjectDictionaryState">
+  <dictionary name="User" />
+</component>

.idea/.idea.PlatonusSchedule/.idea/encodings.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with BOM under Windows, with no BOM otherwise" />
+</project>

.idea/.idea.PlatonusSchedule/.idea/indexLayout.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="UserContentModel">
+    <attachedFolders />
+    <explicitIncludes />
+    <explicitExcludes />
+  </component>
+</project>

.idea/.idea.PlatonusSchedule/.idea/inspectionProfiles/Project_Default.xml

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+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+  </profile>
+</component>

.idea/.idea.PlatonusSchedule/.idea/markdown.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MarkdownSettings">
+    <option name="fileGroupingEnabled" value="true" />
+  </component>
+</project>

.idea/.idea.PlatonusSchedule/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MarkdownSettingsMigration">
+    <option name="stateVersion" value="1" />
+  </component>
+</project>

.idea/.idea.PlatonusSchedule/.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

Platonus.API/DataModels/LoginResponse.cs

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+namespace Platonus.API.DataModels;
+
+class LoginResponse
+{
+    /// session_id
+    public string? sid { get; set; }
+    public string? auth_token { get; set; }
+    /// should be "success"
+    public string? login_status { get; set; }
+}

Platonus.API/DataModels/ScheduleRequest.cs

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+namespace Platonus.API.DataModels;
+
+public class ScheduleRequest
+{
+    public int statusID { get; set; } = 1;
+    public int studentTypeID { get; set; } = 1;
+    public int week { get; set; } = 1;
+}

Platonus.API/LoggindHttpHandler.cs

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+using System;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Platonus.API;
+
+public class LoggindHttpHandler : DelegatingHandler
+{
+    public LoggindHttpHandler(HttpMessageHandler innerHandler) : base(innerHandler)
+    { }
+
+    void LogHttpRequest(HttpRequestMessage req)
+    {
+        Console.WriteLine($"REQUEST {req.Method} to {req.RequestUri}: " +
+                          req.Content?.ReadAsStringAsync().GetAwaiter().GetResult());
+    }
+
+    void LogHttpResponse(HttpResponseMessage res)
+    {
+        Console.WriteLine($"RESPONSE {res.StatusCode} ({(int)res.StatusCode}) from {res.RequestMessage?.RequestUri}: " +
+                          res.Content.ReadAsStringAsync().GetAwaiter().GetResult());
+        if (res.Headers.TryGetValues("Set-Cookie", out var cookieHeaders))
+            foreach (var cookieHeader in cookieHeaders)
+            {
+                Console.WriteLine($"    Set-Cookie: {cookieHeader}");
+            }
+    }
+
+    #if !NETSTANDARD2_0
+    protected override HttpResponseMessage Send(HttpRequestMessage req, CancellationToken cancellationToken)
+    {
+        LogHttpRequest(req);
+        var res = base.Send(req, cancellationToken);
+        LogHttpResponse(res);
+        return res;
+    }
+    #endif
+
+    protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage req, CancellationToken cancellationToken)
+    {
+        LogHttpRequest(req);
+        var res = await base.SendAsync(req, cancellationToken);
+        LogHttpResponse(res);
+        return res;
+    }
+}

Platonus.API/LoginCredentials.cs

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+namespace Platonus.API;
+
+public struct LoginCredentials
+{
+    /// <summary>
+    /// student_id@iitu.edu.kz
+    /// </summary>
+    public readonly string Login;
+
+    public readonly string Password;
+
+    public readonly PlatonusLanguage Language;
+
+    public LoginCredentials(string login, string password, PlatonusLanguage language)
+    {
+        Login = login;
+        Password = password;
+        Language = language;
+    }
+}

Platonus.API/Platonus.API.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFrameworks>netstandard2.0;net6.0;net7.0</TargetFrameworks>
+        <LangVersion>11</LangVersion>
+        <ImplicitUsings>disable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <RootNamespace>Platonus.API</RootNamespace>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="System.Net.Http" Version="4.3.4" />
+      <PackageReference Include="System.Net.Http.Json" Version="7.0.1" />
+    </ItemGroup>
+
+
+</Project>

Platonus.API/PlatonusClient.cs

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+using System;
+using System.Net;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using System.Threading.Tasks;
+using Platonus.API.DataModels;
+
+namespace Platonus.API;
+
+public class PlatonusClient
+{
+    private const string base_url = "https://platonus.iitu.edu.kz/";
+    public bool DebugHttpMessages;
+
+
+    private LoginResponse? _loginResponse;
+    private PlatonusLanguage? _language;
+    private HttpClient _http;
+    private CookieContainer _cookies;
+
+    public PlatonusClient()
+    {
+#if DEBUG
+        // TODO disable http messages logging
+        DebugHttpMessages = true;
+#endif
+        _cookies = new CookieContainer();
+        var httpClientHandler = new HttpClientHandler
+        {
+            CookieContainer = _cookies
+        };
+        _http = new HttpClient(new LoggindHttpHandler(httpClientHandler))
+        {
+            BaseAddress = new Uri(base_url)
+        };
+    }
+
+    public async Task LoginAsync(LoginCredentials userCredentials)
+    {
+        string json = $$"""
+            {
+              "login": "{{userCredentials.Login}}",
+              "password": "{{userCredentials.Password}}",
+              "authForDeductedStudentsAndGraduates": "false"
+            }
+            """;
+        var reqContent = new StringContent(json);
+        reqContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
+        _language = userCredentials.Language;
+        reqContent.Headers.Add("language", _language.Number.ToString());
+        
+
+        try
+        {
+            // send POST request
+            var res = await _http.PostAsync("rest/api/login", reqContent);
+            // parse json
+            if (res.Content.Headers.ContentLength < 1)
+                throw new Exception("responce doesn't have any content");
+            _loginResponse = await res.Content.ReadFromJsonAsync<LoginResponse>()
+                             ?? throw new Exception("invalid login request rezult");
+            if(_loginResponse.login_status != "success")
+                throw new Exception("invalid login request rezult");
+            
+            // set session id and user token headers in HttpClient
+            _http.DefaultRequestHeaders.Add("sid", _loginResponse.sid);
+            _http.DefaultRequestHeaders.Add("token", _loginResponse.auth_token);
+        }
+        catch (HttpRequestException re)
+        {
+            HandleRequestException(re);
+        }
+    }
+
+    public async Task GetScheduleAsync()
+    {
+        if (_language is null)
+            throw new Exception("language is null, you need to login");
+        if (_loginResponse is null)
+            throw new Exception("session id is null, you need to login");
+
+        try
+        {
+            var req = JsonContent.Create<ScheduleRequest>(new ScheduleRequest());
+            var res = await _http.PostAsync(
+                $"rest/schedule/userSchedule/student/initial/{_language.LiteralCode}",
+                req);
+            // var rezult = await res.Content.ReadFromJsonAsync<ScheduleResponseData>();
+        }
+        catch (HttpRequestException re)
+        {
+            HandleRequestException(re);
+        }
+
+    }
+
+    private void HandleRequestException(HttpRequestException re)
+    {
+        // TODO http exception handling
+        throw re;
+    }
+}

Platonus.API/PlatonusLanguage.cs

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+namespace Platonus.API;
+
+public class PlatonusLanguage
+{
+    public readonly int Number;
+    public readonly string LiteralCode;
+
+    private PlatonusLanguage(int num, string literalCode)
+    {
+        Number = num;
+        LiteralCode = literalCode;
+    }
+
+    public static PlatonusLanguage English = new(0, "en");
+    public static PlatonusLanguage Russian = new(1, "ru");
+    public static PlatonusLanguage Kazakh = new(2, "kz");
+}

PlatonusSchedule.CLI/PlatonusSchedule.CLI.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net7.0</TargetFramework>
+        <LangVersion>10</LangVersion>
+        <ImplicitUsings>disable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Platonus.API\Platonus.API.csproj" />
+    </ItemGroup>
+
+</Project>

PlatonusSchedule.CLI/Program.cs

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+using System;
+using Platonus.API;
+
+var p = new PlatonusClient();
+var loginCredentials = new LoginCredentials(
+    ReadString("login"),
+    ReadString("password"),
+    PlatonusLanguage.English);
+await p.LoginAsync(loginCredentials);
+await p.GetScheduleAsync();
+return;
+
+string ReadString(string question)
+{
+    Console.Write($"{question}: ");
+    string? answ = Console.ReadLine();
+    if (string.IsNullOrEmpty(answ))
+        throw new NullReferenceException();
+    return answ;
+}

PlatonusSchedule.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Platonus.API", "Platonus.API\Platonus.API.csproj", "{3650802E-D79E-47FC-ADED-2D9D6AF80340}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PlatonusSchedule.CLI", "PlatonusSchedule.CLI\PlatonusSchedule.CLI.csproj", "{B445963D-AB65-4138-912D-58A0A954A736}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{3650802E-D79E-47FC-ADED-2D9D6AF80340}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3650802E-D79E-47FC-ADED-2D9D6AF80340}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3650802E-D79E-47FC-ADED-2D9D6AF80340}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3650802E-D79E-47FC-ADED-2D9D6AF80340}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B445963D-AB65-4138-912D-58A0A954A736}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B445963D-AB65-4138-912D-58A0A954A736}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B445963D-AB65-4138-912D-58A0A954A736}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B445963D-AB65-4138-912D-58A0A954A736}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal