git init

.gitignore

@@ -0,0 +1,36 @@
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/

build.gradle.kts

@@ -0,0 +1,50 @@
+
+val kotlin_version: String by project
+val logback_version: String by project
+val exposed_version: String by project
+val h2_version: String by project
+
+plugins {
+    kotlin("jvm") version "2.0.21"
+    id("io.ktor.plugin") version "3.0.0"
+    id("org.jetbrains.kotlin.plugin.serialization") version "2.0.21"
+}
+
+group = "com.example"
+version = "0.0.1"
+
+application {
+    mainClass.set("io.ktor.server.netty.EngineMain")
+
+    val isDevelopment: Boolean = project.ext.has("development")
+    applicationDefaultJvmArgs = listOf("-Dio.ktor.development=$isDevelopment")
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation("io.ktor:ktor-server-core-jvm")
+    implementation("io.ktor:ktor-serialization-kotlinx-json-jvm")
+    implementation("io.ktor:ktor-server-content-negotiation-jvm")
+
+    implementation("org.jetbrains.exposed:exposed-core:$exposed_version")
+    implementation("org.jetbrains.exposed:exposed-jdbc:$exposed_version")
+    implementation ("org.jetbrains.exposed:exposed-dao:$exposed_version")
+    implementation("org.jetbrains.exposed:exposed-kotlin-datetime:$exposed_version")
+
+
+    implementation("org.postgresql:postgresql:42.7.4")
+
+    implementation("io.insert-koin:koin-ktor:4.0.0")
+
+    implementation("io.ktor:ktor-server-swagger-jvm")
+    implementation("io.ktor:ktor-server-auth-jvm")
+    implementation("io.ktor:ktor-server-auth-jwt-jvm")
+    implementation("io.ktor:ktor-server-netty-jvm")
+    implementation("ch.qos.logback:logback-classic:$logback_version")
+    implementation("io.ktor:ktor-server-config-yaml")
+    testImplementation("io.ktor:ktor-server-test-host-jvm")
+    testImplementation("org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version")
+}

gradle.properties

@@ -0,0 +1,6 @@
+kotlin.code.style=official
+ktor_version=3.0.0
+kotlin_version=2.0.21
+logback_version=1.4.14
+exposed_version=0.53.0
+h2_version=2.2.224

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle.kts

@@ -0,0 +1 @@
+rootProject.name = "com.example.presence"

src/main/kotlin/com/example/Application.kt

@@ -0,0 +1,17 @@
+package com.example
+
+import com.example.data.configureDatabases
+import com.example.plugins.*
+import io.ktor.server.application.*
+
+fun main(args: Array<String>) {
+    io.ktor.server.netty.EngineMain.main(args)
+}
+
+fun Application.module() {
+
+    configureKoin()
+    configureSerialization()
+    configureDatabases()
+    configureRouting()
+}

src/main/kotlin/com/example/common/mapping.kt

@@ -0,0 +1,21 @@
+package com.example.common
+
+import com.example.data.entity.GroupDAO
+import com.example.data.entity.UserDAO
+import com.example.domain.group.GroupModel
+import com.example.domain.models.UserModel
+import kotlinx.coroutines.Dispatchers
+import org.jetbrains.exposed.sql.transactions.experimental.newSuspendedTransaction
+
+suspend fun <T> dbQuery(block: () -> T): T =
+    newSuspendedTransaction(Dispatchers.IO) { block() }
+
+fun daoGroupToModel(daoGroup: GroupDAO) = GroupModel(
+    id = daoGroup.id.value,
+    name = daoGroup.name,
+    users = daoGroup.users.map { daoUserToModel(it) }
+)
+fun daoUserToModel(daoUser: UserDAO) = UserModel(
+    uuid = daoUser.id.value.toString(),
+    name = daoUser.name
+)

src/main/kotlin/com/example/controller/AdminRouter.kt

@@ -0,0 +1,21 @@
+package com.example.controller
+
+import com.example.controller.requests.user.CreateUserWithGroupRequest
+import com.example.data.models.UserCreateWithoutGroupRequest
+import com.example.domain.admin.AdminService
+import io.ktor.server.application.*
+import io.ktor.server.request.*
+import io.ktor.server.routing.*
+
+
+fun Application.adminRouter(adminService: AdminService){
+
+    routing {
+        route("admin"){
+            post {
+                val request = call.receive<CreateUserWithGroupRequest>()
+                adminService.createGroupWithStudents(request.groupName, request.usersName.map { it -> UserCreateWithoutGroupRequest(it.name) })
+            }
+        }
+    }
+}

src/main/kotlin/com/example/controller/GroupRouter.kt

@@ -0,0 +1,30 @@
+package com.example.controller
+
+import com.example.domain.group.GroupService
+import io.ktor.server.application.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+
+
+fun Application.groupRouter(groupUseCase: GroupService){
+    routing {
+        route("group"){
+            get {
+                val groups = groupUseCase.getAllGroups()
+                call.respond(groups)
+            }
+            get("/{id}"){
+
+            }
+            post {
+
+            }
+            delete {
+
+            }
+            put{
+
+            }
+        }
+    }
+}

src/main/kotlin/com/example/controller/PresenceRouter.kt

@@ -0,0 +1,25 @@
+package com.example.controller
+
+import com.example.controller.requests.presence.CreatePresenceByGroupAndDayRequest
+import com.example.domain.presence.PresenceService
+import io.ktor.server.application.*
+import io.ktor.server.request.*
+import io.ktor.server.routing.*
+
+
+fun Application.presenceRouter(presenceService: PresenceService){
+
+    routing {
+        route("presence"){
+            post {
+                val presenceGenerate = call.receive<CreatePresenceByGroupAndDayRequest>()
+                presenceService.generatePresenceByGroupAndDay(
+                    groupID = presenceGenerate.groupID,
+                    date = presenceGenerate.date,
+                    firstLesson = presenceGenerate.firstLessonNumber,
+                    lastLesson = presenceGenerate.lastLessonNumber
+                )
+            }
+        }
+    }
+}

src/main/kotlin/com/example/controller/requests/presence/CreatePresenceByGroupAndDayRequest.kt

@@ -0,0 +1,13 @@
+package com.example.controller.requests.presence
+
+import kotlinx.datetime.LocalDate
+import kotlinx.serialization.Serializable
+import java.util.Date
+
+@Serializable
+data class CreatePresenceByGroupAndDayRequest(
+    val groupID:Int,
+    val date: LocalDate,
+    val firstLessonNumber: Int = 1,
+    val lastLessonNumber: Int = 8
+)

src/main/kotlin/com/example/controller/requests/user/CreateUserRequest.kt

@@ -0,0 +1,3 @@
+package com.example.controller.requests.user
+
+data class CreateUserRequest(val name: String, val groupId:Int)

src/main/kotlin/com/example/controller/requests/user/CreateUserRequestWithoutGroup.kt

@@ -0,0 +1,6 @@
+package com.example.controller.requests.user
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class CreateUserRequestWithoutGroup(val name: String)

src/main/kotlin/com/example/controller/requests/user/CreateUserWithGroupRequest.kt

@@ -0,0 +1,6 @@
+package com.example.controller.requests.user
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class CreateUserWithGroupRequest(val groupName:String, val usersName: List<CreateUserRequestWithoutGroup>)

src/main/kotlin/com/example/data/Databases.kt

@@ -0,0 +1,32 @@
+package com.example.data
+
+import com.example.data.entity.Groups
+import com.example.data.entity.Presences
+import com.example.data.entity.Users
+import io.ktor.http.*
+import io.ktor.server.application.*
+import io.ktor.server.config.*
+import io.ktor.server.request.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.transactions.transaction
+
+fun Application.configureDatabases() {
+
+
+
+    Database.connect(
+        url = environment.config.property("db.host").getString(),
+        user = environment.config.property("db.user").getString(),
+        password = environment.config.property("db.password").getString(),
+
+    )
+    run {
+        transaction {
+            SchemaUtils.create(Groups)
+            SchemaUtils.create(Users)
+            SchemaUtils.create(Presences)
+        }
+    }
+}

src/main/kotlin/com/example/data/entity/GroupEnitty.kt

@@ -0,0 +1,19 @@
+package com.example.data.entity
+
+import org.jetbrains.exposed.dao.*
+import org.jetbrains.exposed.dao.id.EntityID
+import org.jetbrains.exposed.dao.id.IntIdTable
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.transactions.transaction
+
+object Groups: IntIdTable("groups"){
+
+    val name = text("group_name")
+}
+
+class GroupDAO(id: EntityID<Int>): IntEntity(id){
+    companion object : IntEntityClass<GroupDAO>(Groups)
+    var name by Groups.name
+    val users by UserDAO referrersOn Users.group
+}
+

src/main/kotlin/com/example/data/entity/Presences.kt

@@ -0,0 +1,25 @@
+package com.example.data.entity
+
+import org.jetbrains.exposed.dao.CompositeEntity
+import org.jetbrains.exposed.dao.CompositeEntityClass
+import org.jetbrains.exposed.dao.id.CompositeID
+import org.jetbrains.exposed.dao.id.CompositeIdTable
+import org.jetbrains.exposed.dao.id.EntityID
+import org.jetbrains.exposed.sql.kotlin.datetime.date
+
+object Presences: CompositeIdTable("presences"){
+    var isAttendance = bool("presence_is_attendance")
+    val date = date("presence_date")
+    val userUUID = reference("user_uuid", Users.id)
+    val lessonNumber = integer("lessonNumber")
+    override val primaryKey: PrimaryKey = PrimaryKey(date, userUUID, lessonNumber, isAttendance)
+}
+
+class PresenceDAO(id: EntityID<CompositeID>): CompositeEntity(id){
+    companion object: CompositeEntityClass<PresenceDAO>(Presences)
+    var user by UserDAO referencedOn Presences.userUUID
+    var date by Presences.date
+    var userUUID by Presences.userUUID
+    var lessonNumber by Presences.lessonNumber
+    var isAttendance by Presences.isAttendance
+}

src/main/kotlin/com/example/data/entity/UsersEntity.kt

@@ -0,0 +1,20 @@
+package com.example.data.entity
+
+import com.example.data.entity.UserDAO.Companion.referrersOn
+import org.jetbrains.exposed.dao.UUIDEntity
+import org.jetbrains.exposed.dao.UUIDEntityClass
+import org.jetbrains.exposed.dao.id.EntityID
+import org.jetbrains.exposed.dao.id.UUIDTable
+import java.util.UUID
+
+object Users: UUIDTable("users") {
+    val name = text("user_name")
+    val group = reference("group_id", Groups)
+}
+
+
+class UserDAO(uuid: EntityID<UUID>): UUIDEntity(uuid){
+    companion object: UUIDEntityClass<UserDAO>(Users)
+    var name by Users.name
+    var group_id by Users.group
+}

src/main/kotlin/com/example/data/models/PresenceCreateRequest.kt

@@ -0,0 +1,10 @@
+package com.example.data.models
+
+import kotlinx.datetime.LocalDate
+import java.util.UUID
+
+data class PresenceCreateRequest(val date:LocalDate,
+                                 val userUUID: UUID,
+                                 var isAttendance:Boolean = true,
+                                 val lessonNumber: Int
+    )

src/main/kotlin/com/example/data/models/UserCreateRequest.kt

@@ -0,0 +1,3 @@
+package com.example.data.models
+
+data class UserCreateRequest(val name: String, val groupID: Int)

src/main/kotlin/com/example/data/models/UserCreateWithoutGroupRequest.kt

@@ -0,0 +1,3 @@
+package com.example.data.models
+
+data class UserCreateWithoutGroupRequest(val name: String)

src/main/kotlin/com/example/data/repository/admin/AdminRepository.kt

@@ -0,0 +1,7 @@
+package com.example.data.repository.admin
+
+import com.example.data.models.UserCreateWithoutGroupRequest
+
+interface AdminRepository {
+    suspend fun createGroupWithStudents(groupName:String, users: List<UserCreateWithoutGroupRequest>){}
+}

src/main/kotlin/com/example/data/repository/admin/AdminRepositoryImpl.kt

@@ -0,0 +1,19 @@
+package com.example.data.repository.admin
+
+import com.example.common.dbQuery
+import com.example.data.entity.*
+import com.example.data.models.UserCreateWithoutGroupRequest
+
+class AdminRepositoryImpl: AdminRepository {
+    override suspend fun createGroupWithStudents(groupName: String, users: List<UserCreateWithoutGroupRequest>)  = dbQuery {
+      val newGroup = GroupDAO.new {
+            name = groupName
+        }
+        users.forEach { newUser ->
+            UserDAO.new {
+                name =  newUser.name
+                group_id = newGroup.id
+            }
+        }
+    }
+}

src/main/kotlin/com/example/data/repository/group/GroupRepository.kt

@@ -0,0 +1,11 @@
+package com.example.data.repository.group
+
+
+import com.example.domain.group.GroupModel
+
+interface GroupRepository {
+    suspend fun getAllGroups():List<GroupModel>
+    suspend fun getGroupById(id:Int): GroupModel?
+    suspend fun updateGroupById(id:Int, group:GroupModel): Boolean
+    suspend fun removeGroupById(id: Int): Boolean
+}

src/main/kotlin/com/example/data/repository/group/GroupRepositoryImpl.kt

@@ -0,0 +1,28 @@
+package com.example.data.repository.group
+
+import com.example.common.daoGroupToModel
+import com.example.common.dbQuery
+import com.example.data.entity.GroupDAO
+import com.example.data.entity.Groups
+import com.example.domain.group.GroupModel
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.deleteWhere
+
+class GroupRepositoryImpl: GroupRepository {
+    override suspend fun getAllGroups(): List<GroupModel>  = dbQuery {
+          GroupDAO.all().map(::daoGroupToModel)
+        }
+
+    override suspend fun getGroupById(id:Int): GroupModel? = dbQuery {
+        GroupDAO.findById(id)?.let { daoGroupToModel(it) }
+    }
+
+    override suspend fun updateGroupById(id: Int, group:GroupModel): Boolean = dbQuery {
+        GroupDAO.findByIdAndUpdate(id, {it.name = group.name}) != null
+    }
+
+    override suspend fun removeGroupById(id: Int): Boolean = dbQuery{
+        val rowsDeleted = Groups.deleteWhere { Groups.id eq id }
+        rowsDeleted == 1
+    }
+}

src/main/kotlin/com/example/data/repository/presence/PresenceRepository.kt

@@ -0,0 +1,9 @@
+package com.example.data.repository.presence
+
+import com.example.data.models.PresenceCreateRequest
+import kotlinx.datetime.LocalDate
+import java.util.Date
+
+interface PresenceRepository {
+    suspend  fun insertPresences(presences: List<PresenceCreateRequest>)
+}

src/main/kotlin/com/example/data/repository/presence/PresenceRepositoryImpl.kt

@@ -0,0 +1,23 @@
+package com.example.data.repository.presence
+
+import com.example.common.dbQuery
+import com.example.data.entity.PresenceDAO
+import com.example.data.entity.Presences
+import com.example.data.entity.Users
+import com.example.data.models.PresenceCreateRequest
+import org.jetbrains.exposed.dao.id.EntityID
+import org.jetbrains.exposed.sql.insert
+import org.jetbrains.exposed.sql.insertAndGetId
+
+class PresenceRepositoryImpl: PresenceRepository {
+    override suspend fun insertPresences(presences: List<PresenceCreateRequest>) = dbQuery {
+        presences.forEach { presence ->
+            Presences.insert { presenceIns ->
+                presenceIns[date] =  presence.date
+                presenceIns[isAttendance]  = presence.isAttendance
+                presenceIns[userUUID] = presence.userUUID
+                presenceIns[lessonNumber] = presence.lessonNumber
+            }
+        }
+    }
+}

src/main/kotlin/com/example/data/repository/user/UserRepository.kt

@@ -0,0 +1,11 @@
+package com.example.data.repository.user
+
+import com.example.domain.models.UserModel
+import java.util.UUID
+
+interface UserRepository {
+    suspend fun getByGuid(uuid: UUID): UserModel?
+    suspend fun getAllUsers(): List<UserModel>
+    suspend fun updateUserByUUID(id:UUID, updatedUser: UserModel): Boolean
+    suspend fun removeUserByUUID(id: UUID): Boolean
+}

src/main/kotlin/com/example/data/repository/user/UserRepositoryImpl.kt

@@ -0,0 +1,32 @@
+package com.example.data.repository.user
+
+import com.example.common.daoUserToModel
+import com.example.common.dbQuery
+import com.example.data.entity.Groups
+import com.example.data.entity.UserDAO
+import com.example.data.entity.Users
+import com.example.domain.models.UserModel
+import org.jetbrains.exposed.dao.id.EntityID
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.deleteWhere
+import java.util.*
+
+class UserRepositoryImpl: UserRepository {
+    override suspend fun getByGuid(uuid: UUID): UserModel? = dbQuery {
+        UserDAO.findById(uuid)?.let { daoUserToModel(it) }
+    }
+    override suspend fun getAllUsers(): List<UserModel> = dbQuery {
+        UserDAO.all().map(::daoUserToModel).toList()
+    }
+
+    override suspend fun updateUserByUUID(id: UUID, updatedUser: UserModel): Boolean = dbQuery {
+        UserDAO.findByIdAndUpdate(id, { user ->
+            user.name = updatedUser.name
+        }) != null
+    }
+
+    override suspend fun removeUserByUUID(id: UUID): Boolean = dbQuery{
+        val result = Users.deleteWhere { Users.id eq id }
+        result > 0
+    }
+}

src/main/kotlin/com/example/di/di.kt

@@ -0,0 +1,23 @@
+package com.example.di
+
+import com.example.data.repository.admin.AdminRepository
+import com.example.data.repository.admin.AdminRepositoryImpl
+import com.example.data.repository.group.GroupRepository
+import com.example.data.repository.group.GroupRepositoryImpl
+import com.example.data.repository.presence.PresenceRepository
+import com.example.data.repository.presence.PresenceRepositoryImpl
+import com.example.domain.group.GroupService
+import com.example.domain.admin.AdminService
+import com.example.domain.presence.PresenceService
+import org.koin.core.module.dsl.bind
+import org.koin.core.module.dsl.singleOf
+import org.koin.dsl.module
+
+val appModules =  module {
+    singleOf(::GroupRepositoryImpl){bind<GroupRepository>()}
+    singleOf(::AdminRepositoryImpl){bind<AdminRepository>()}
+    singleOf(::PresenceRepositoryImpl){bind<PresenceRepository>()}
+    singleOf(::GroupService)
+    singleOf(::AdminService)
+    singleOf(::PresenceService)
+}

src/main/kotlin/com/example/domain/admin/AdminService.kt

@@ -0,0 +1,12 @@
+package com.example.domain.admin
+
+import com.example.data.models.UserCreateWithoutGroupRequest
+import com.example.data.repository.admin.AdminRepository
+import com.example.data.repository.group.GroupRepository
+
+class AdminService(private val groupRepository: GroupRepository,
+                   private val adminRepository: AdminRepository) {
+    suspend fun createGroupWithStudents(groupName : String, users: List<UserCreateWithoutGroupRequest>){
+        adminRepository.createGroupWithStudents(groupName, users.map { it -> UserCreateWithoutGroupRequest(it.name) })
+    }
+}

src/main/kotlin/com/example/domain/group/GroupModel.kt

@@ -0,0 +1,7 @@
+package com.example.domain.group
+
+import com.example.domain.models.UserModel
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class GroupModel(val id: Int, val name: String, var users: List<UserModel>? = null)

src/main/kotlin/com/example/domain/group/GroupService.kt

@@ -0,0 +1,10 @@
+package com.example.domain.group
+
+import com.example.data.repository.group.GroupRepository
+
+class GroupService(private val repository: GroupRepository) {
+
+    suspend fun getAllGroups() = repository.getAllGroups()
+
+
+}

src/main/kotlin/com/example/domain/models/UserCreateWithGroupRequest.kt

@@ -0,0 +1,3 @@
+package com.example.domain.models
+
+data class UserCreateWithGroupRequest(val name:String)

src/main/kotlin/com/example/domain/models/UserModel.kt

@@ -0,0 +1,8 @@
+package com.example.domain.models
+
+import com.example.domain.group.GroupModel
+import kotlinx.serialization.Serializable
+import java.util.UUID
+
+@Serializable
+data class UserModel(val uuid: String, val name: String)

src/main/kotlin/com/example/domain/presence/PresenceService.kt

@@ -0,0 +1,30 @@
+package com.example.domain.presence
+
+import com.example.data.models.PresenceCreateRequest
+import com.example.data.repository.group.GroupRepository
+import com.example.data.repository.presence.PresenceRepository
+import kotlinx.datetime.LocalDate
+import java.util.*
+
+class PresenceService(
+    private val presenceRepository: PresenceRepository,
+    private val groupRepository: GroupRepository
+) {
+    suspend fun generatePresenceByGroupAndDay(groupID:Int,
+                                              date:LocalDate,
+                                              firstLesson:Int,
+                                              lastLesson:Int){
+        val generatedPresences = mutableListOf<PresenceCreateRequest>()
+        val users = groupRepository.getGroupById(groupID)
+        users?.users?.forEach { user ->
+            for (i in firstLesson..lastLesson){
+                generatedPresences.add(PresenceCreateRequest(
+                    date = date,
+                    userUUID = UUID.fromString(user.uuid),
+                    lessonNumber = i
+                    ))
+            }
+        }
+        if(generatedPresences.isNotEmpty()) presenceRepository.insertPresences(generatedPresences)
+    }
+}

src/main/kotlin/com/example/plugins/DI.kt

@@ -0,0 +1,12 @@
+package com.example.plugins
+
+import com.example.di.appModules
+import io.ktor.server.application.*
+import org.koin.ktor.plugin.Koin
+import org.koin.ktor.plugin.koin
+
+fun Application.configureKoin(){
+    install(Koin){
+            modules(appModules)
+    }
+}

src/main/kotlin/com/example/plugins/HTTP.kt

@@ -0,0 +1,12 @@
+package com.example.plugins
+
+import io.ktor.server.application.*
+import io.ktor.server.plugins.swagger.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+
+fun Application.configureHTTP() {
+    routing {
+        swaggerUI(path = "openapi")
+    }
+}

src/main/kotlin/com/example/plugins/Routing.kt

@@ -0,0 +1,19 @@
+package com.example.plugins
+
+import com.example.controller.adminRouter
+import com.example.controller.groupRouter
+import com.example.controller.presenceRouter
+import com.example.domain.admin.AdminService
+import com.example.domain.group.GroupService
+import com.example.domain.presence.PresenceService
+import io.ktor.server.application.*
+import org.koin.ktor.ext.inject
+
+fun Application.configureRouting() {
+    val groupService by inject<GroupService>()
+    val adminService by inject<AdminService>()
+    val presenceService by inject<PresenceService>()
+    groupRouter(groupService)
+    adminRouter(adminService)
+    presenceRouter(presenceService)
+}

src/main/kotlin/com/example/plugins/Security.kt

@@ -0,0 +1,31 @@
+package com.example.plugins
+
+import com.auth0.jwt.JWT
+import com.auth0.jwt.algorithms.Algorithm
+import io.ktor.server.application.*
+import io.ktor.server.auth.*
+import io.ktor.server.auth.jwt.*
+import io.ktor.server.response.*
+
+fun Application.configureSecurity() {
+    // Please read the jwt property from the config file if you are using EngineMain
+    val jwtAudience = "jwt-audience"
+    val jwtDomain = "https://jwt-provider-domain/"
+    val jwtRealm = "ktor sample app"
+    val jwtSecret = "secret"
+    authentication {
+        jwt {
+            realm = jwtRealm
+            verifier(
+                JWT
+                    .require(Algorithm.HMAC256(jwtSecret))
+                    .withAudience(jwtAudience)
+                    .withIssuer(jwtDomain)
+                    .build()
+            )
+            validate { credential ->
+                if (credential.payload.audience.contains(jwtAudience)) JWTPrincipal(credential.payload) else null
+            }
+        }
+    }
+}

src/main/kotlin/com/example/plugins/Serialization.kt

@@ -0,0 +1,13 @@
+package com.example.plugins
+
+import io.ktor.serialization.kotlinx.json.*
+import io.ktor.server.application.*
+import io.ktor.server.plugins.contentnegotiation.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+
+fun Application.configureSerialization() {
+    install(ContentNegotiation) {
+        json()
+    }
+}

src/main/kotlin/com/example/plugins/UsersSchema.kt

@@ -0,0 +1,62 @@
+package com.example.plugins
+
+import com.example.common.dbQuery
+import com.example.plugins.UserService.Users
+import kotlinx.coroutines.Dispatchers
+import kotlinx.serialization.Serializable
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.transactions.experimental.newSuspendedTransaction
+import org.jetbrains.exposed.sql.transactions.transaction
+
+@Serializable
+data class ExposedUser(val name: String, val age: Int)
+
+class UserService(database: Database) {
+    object Users : Table() {
+        val id = integer("id").autoIncrement()
+        val name = varchar("name", length = 50)
+        val age = integer("age")
+
+        override val primaryKey = PrimaryKey(id)
+    }
+
+    init {
+        transaction(database) {
+            SchemaUtils.create(Users)
+        }
+    }
+
+    suspend fun create(user: ExposedUser): Int = dbQuery {
+        Users.insert {
+            it[name] = user.name
+            it[age] = user.age
+        }[Users.id]
+    }
+
+    suspend fun read(id: Int): ExposedUser? {
+        return dbQuery {
+            Users.selectAll().where { Users.id eq id }
+                .map { ExposedUser(it[Users.name], it[Users.age]) }
+                .singleOrNull()
+        }
+    }
+
+    suspend fun update(id: Int, user: ExposedUser) {
+        dbQuery {
+            Users.update({ Users.id eq id }) {
+                it[name] = user.name
+                it[age] = user.age
+            }
+        }
+    }
+
+    suspend fun delete(id: Int) {
+        dbQuery {
+            Users.deleteWhere { Users.id.eq(id) }
+        }
+    }
+
+    
+}
+

src/main/resources/application.yaml

@@ -0,0 +1,14 @@
+ktor:
+    application:
+        modules:
+            - com.example.ApplicationKt.module
+    deployment:
+        port: 8080
+jwt:
+  domain: "https://jwt-provider-domain/"
+  audience: "jwt-audience"
+  realm: "ktor sample app"
+db:
+  host: "jdbc:postgresql://localhost:5432/presence"
+  user: "postgres"
+  password: "123"

src/main/resources/logback.xml

@@ -0,0 +1,12 @@
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{YYYY-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+    <root level="trace">
+        <appender-ref ref="STDOUT"/>
+    </root>
+    <logger name="org.eclipse.jetty" level="INFO"/>
+    <logger name="io.netty" level="INFO"/>
+</configuration>

src/main/resources/openapi/documentation.yaml

@@ -0,0 +1,23 @@
+openapi: "3.0.3"
+info:
+  title: "Application API"
+  description: "Application API"
+  version: "1.0.0"
+servers:
+  - url: "http://0.0.0.0:8080"
+paths:
+  /:
+    get:
+      description: "Hello World!"
+      responses:
+        "200":
+          description: "OK"
+          content:
+            text/plain:
+              schema:
+                type: "string"
+              examples:
+                Example#1:
+                  value: "Hello World!"
+components:
+  schemas: {}

src/test/kotlin/com/example/ApplicationTest.kt

@@ -0,0 +1,21 @@
+package com.example
+
+import com.example.plugins.*
+import io.ktor.client.request.*
+import io.ktor.client.statement.*
+import io.ktor.http.*
+import io.ktor.server.testing.*
+import kotlin.test.*
+
+class ApplicationTest {
+    @Test
+    fun testRoot() = testApplication {
+        application {
+            configureRouting()
+        }
+        client.get("/").apply {
+            assertEquals(HttpStatusCode.OK, status)
+            assertEquals("Hello World!", bodyAsText())
+        }
+    }
+}