diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..5dc177e2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+.idea
+out/*
+*.iml
+target
+
+settings.xml
+
+.gradle/
+build/
+out/
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 00000000..b8f3c96a
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,42 @@
+project.version = "0.1.0"
+project.group = "com.github.insanusmokrassar"
+
+buildscript {
+    repositories {
+        mavenLocal()
+        jcenter()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "org.jetbrains.kotlin:kotlin-serialization:$kotlin_version"
+        classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:$gradle_bintray_plugin_version"
+    }
+}
+
+apply plugin: 'java-library'
+apply plugin: 'kotlin'
+apply plugin: 'kotlinx-serialization'
+
+apply from: "publish.gradle"
+
+repositories {
+    mavenLocal()
+    jcenter()
+    mavenCentral()
+    maven { url "https://kotlin.bintray.com/kotlinx" }
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    api "org.jetbrains.kotlinx:kotlinx-coroutines-core:$kotlin_coroutines_version"
+    api "org.jetbrains.kotlinx:kotlinx-serialization-runtime:$kotlin_serialisation_runtime_version"
+    api "joda-time:joda-time:$joda_time_version"
+}
+
+compileKotlin {
+    kotlinOptions {
+        freeCompilerArgs = [ disableImplicitReflectionSerializerAnnotation ]
+    }
+}
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 00000000..3b37daa8
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,13 @@
+kotlin.code.style=official
+kotlin_version=1.3.50
+kotlin_coroutines_version=1.3.1
+kotlin_serialisation_runtime_version=0.13.0
+
+joda_time_version=2.10.3
+
+gradle_bintray_plugin_version=1.8.4
+
+project_public_name=PostsSystemCore
+project_public_description=Core library for PostsSystem
+
+disableImplicitReflectionSerializerAnnotation=-Xexperimental=kotlinx.serialization.ImplicitReflectionSerializer
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..9ab0a835
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..663c4485
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-bin.zip
diff --git a/gradlew b/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$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" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@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 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=
+
+@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 init
+
+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 init
+
+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
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+: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 %CMD_LINE_ARGS%
+
+: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
diff --git a/maven.publish.gradle b/maven.publish.gradle
new file mode 100644
index 00000000..f0237c29
--- /dev/null
+++ b/maven.publish.gradle
@@ -0,0 +1,63 @@
+apply plugin: 'maven-publish'
+apply plugin: 'signing'
+
+task sourcesJar(type: Jar) {
+    from sourceSets.main.allSource
+    classifier = 'sources'
+}
+
+task javadocJar(type: Jar) {
+    from javadoc
+    classifier = 'javadoc'
+}
+
+publishing {
+    publications {
+        maven(MavenPublication) {
+            from components.java
+            groupId "${project.group}"
+            artifactId "${project.name}"
+            version "${project.version}"
+
+            artifact sourcesJar
+            artifact javadocJar
+            
+            pom.withXml {
+                asNode().children().last() + {
+                    resolveStrategy = Closure.DELEGATE_FIRST
+                    name "${project_public_name}"
+                    description "${project_public_description}"
+                    url "https://insanusmokrassar.github.io/${project.name}"
+
+                    scm {
+                        connection "scm:git:git://github.com/insanusmokrassar/${project.name}.git"
+                        developerConnection "scm:git:[fetch=]https://github.com/insanusmokrassar/${project.name}.git[push=]ssh:git@github.com:insanusmokrassar/${project.name}.git"
+                        url "https://github.com/insanusmokrassar/${project.name}"
+
+                    }
+
+                    developers {
+                        developer {
+                            id "InsanusMokrassar"
+                            name "Ovsyannikov Alexey"
+                            email "ovsyannikov.alexey95@gmail.com"
+                        }
+                    }
+
+                    licenses {
+                        license {
+                            name 'The Apache Software License, Version 2.0'
+                            url 'https://github.com/InsanusMokrassar/TelegramBotAPI/blob/master/LICENSE'
+                            distribution 'repo'
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+signing {
+    useGpgCmd()
+    sign publishing.publications.maven
+}
diff --git a/publish.gradle b/publish.gradle
new file mode 100644
index 00000000..6e8de125
--- /dev/null
+++ b/publish.gradle
@@ -0,0 +1,33 @@
+apply plugin: 'com.jfrog.bintray'
+
+ext {
+    projectBintrayDir = "${project.group}/".replace(".", "/") + "${project.name}/${project.version}"
+}
+
+bintray {
+    user = project.hasProperty('BINTRAY_USER') ? project.property('BINTRAY_USER') : System.getenv('BINTRAY_USER')
+    key = project.hasProperty('BINTRAY_KEY') ? project.property('BINTRAY_KEY') : System.getenv('BINTRAY_KEY')
+    publications = ["maven"]
+    filesSpec {
+        into "$projectBintrayDir"
+        from("build/libs") {
+            include "**/*.asc"
+        }
+        from("build/publications/maven") {
+            rename 'pom-default.xml(.*)', "${project.name}-${project.version}.pom\$1"
+        }
+    }
+    pkg {
+        repo = 'StandardRepository'
+        name = "${project.name}"
+        vcsUrl = "https://github.com/InsanusMokrassar/${project.name}"
+        licenses = ['Apache-2.0']
+        version {
+            name = "${project.version}"
+            released = new Date()
+            vcsTag = name
+        }
+    }
+}
+
+apply from: "maven.publish.gradle"
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 00000000..d9165360
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,18 @@
+/*
+ * This settings file was generated by the Gradle 'init' task.
+ *
+ * The settings file is used to specify which projects to include in your build.
+ * In a single project build this file can be empty or even removed.
+ *
+ * Detailed information about configuring a multi-project build in Gradle can be found
+ * in the user guide at https://docs.gradle.org/4.4.1/userguide/multi_project_builds.html
+ */
+
+/*
+// To declare projects as part of a multi-project build use the 'include' method
+include 'shared'
+include 'api'
+include 'services:webservice'
+*/
+
+rootProject.name = 'PostsSystemCore'