This commit is contained in:
RedGuy 2024-01-29 22:32:21 +03:00
commit 52a732e62a
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.gradle
build/
!gradle/wrapper/gradle-wrapper.jar
!**/src/main/**/build/
!**/src/test/**/build/
### IntelliJ IDEA ###
.idea/modules.xml
.idea/jarRepositories.xml
.idea/compiler.xml
.idea/libraries/
*.iws
*.iml
*.ipr
out/
!**/src/main/**/out/
!**/src/test/**/out/
### Eclipse ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
bin/
!**/src/main/**/bin/
!**/src/test/**/bin/
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
### VS Code ###
.vscode/
### Mac OS ###
.DS_Store

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# Default ignored files
/shelf/
/workspace.xml
# Editor-based HTTP Client requests
/httpRequests/
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="DiscordProjectSettings">
<option name="show" value="PROJECT_FILES" />
<option name="description" value="" />
</component>
</project>

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="GradleSettings">
<option name="linkedExternalProjectsSettings">
<GradleProjectSettings>
<option name="externalProjectPath" value="$PROJECT_DIR$" />
<option name="modules">
<set>
<option value="$PROJECT_DIR$" />
</set>
</option>
</GradleProjectSettings>
</option>
</component>
</project>

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ExternalStorageConfigurationManager" enabled="true" />
<component name="FrameworkDetectionExcludesConfiguration">
<file type="web" url="file://$PROJECT_DIR$" />
</component>
<component name="ProjectRootManager" version="2" languageLevel="JDK_20" default="true" project-jdk-name="temurin-20" project-jdk-type="JavaSDK" />
</project>

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# Тестовое задание Петров
## Опишите алгоритм процесс "сделать чаю"
1. Взять чайник
2. Налить воды
3. Поставить чайник на базовую станцию
4. Включить чайник
5. Дождаться конца работы чайника
6. Взять кружку
7. Налить в кружку воды из чайника до нужного уровня
8. Взять пакетик чая
9. Положить пакетик чая в кружку и несколько раз поднять и опустить его
10. Взять ложку
11. Взять сахар используя ложку
12. Положить сахар в кружку
13. Взять сахар используя ложку
14. Положить сахар в кружку
15. Взять сахар используя ложку
16. Положить сахар в кружку
17. Перемешать чай ложкой
18. Готово
## Напишите код программы получение АПИ котировок с биржи бинанс
(см. файл Task2.java)
## Напишите смарт контракт для сделки двух участников в телеграм (выполняется когда заказчик и исполнитель подтвердили сделку и арбитраж если отказали)
(см. файл Task3.java)
## Напишите на Java код позволяющий подписать ЭЦП документ
(см. файл Task4.java)

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plugins {
id 'java'
}
group = 'ru.redguy.testtask'
version = '1.0-SNAPSHOT'
repositories {
mavenCentral()
}
java {
compileJava.options.encoding = 'UTF-8'
}
dependencies {
implementation("io.github.binance:binance-connector-java:3.2.0")
implementation("com.google.code.gson:gson:2.10.1")
implementation("org.telegram:telegrambots:6.9.7.0")
}
test {
useJUnitPlatform()
}

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distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
networkTimeout=10000
validateDistributionUrl=true
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

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#!/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/HEAD/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
# This is normally unused
# shellcheck disable=SC2034
APP_BASE_NAME=${0##*/}
# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum
warn () {
echo "$*"
} >&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: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD=java
if ! command -v java >/dev/null 2>&1
then
die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
fi
# Increase the maximum file descriptors if we can.
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
case $MAX_FD in #(
max*)
# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
MAX_FD=$( ulimit -H -n ) ||
warn "Could not query maximum file descriptor limit"
esac
case $MAX_FD in #(
'' | soft) :;; #(
*)
# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
ulimit -n "$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
# 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"'
# Collect all arguments for the java command:
# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
# and any embedded shellness will be escaped.
# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
# treated as '${Hostname}' itself on the command line.
set -- \
"-Dorg.gradle.appname=$APP_BASE_NAME" \
-classpath "$CLASSPATH" \
org.gradle.wrapper.GradleWrapperMain \
"$@"
# Stop when "xargs" is not available.
if ! command -v xargs >/dev/null 2>&1
then
die "xargs is not available"
fi
# Use "xargs" to parse quoted args.
#
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
#
# In Bash we could simply go:
#
# readarray ARGS < <( xargs -n1 <<<"$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 "$JAVACMD" "$@"

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@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=.
@rem This is normally unused
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% equ 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% equ 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!
set EXIT_CODE=%ERRORLEVEL%
if %EXIT_CODE% equ 0 set EXIT_CODE=1
if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
exit /b %EXIT_CODE%
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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rootProject.name = 'TestTask'

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package ru.redguy.testtask;
import com.binance.connector.client.SpotClient;
import com.binance.connector.client.impl.SpotClientImpl;
import com.google.gson.Gson;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Scanner;
public class Task2 {
public static Gson gson = new Gson();
public static void main(String[] args) {
//Напишите код программы получение АПИ котировок с биржи бинанс
Scanner scanner = new Scanner(System.in);
System.out.print("Origin current (BNB): ");
String from = scanner.nextLine();
System.out.print("Result current (BTC): ");
String to = scanner.nextLine();
SpotClient client = new SpotClientImpl();
Map<String, Object> params = new LinkedHashMap<>();
params.put("symbol", from.trim() + to.trim());
Price res = gson.fromJson(client.createMarket().averagePrice(params), Price.class);
System.out.println(res.price);
}
class Price {
public int mins;
public String price;
public String closeTime;
}
}

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package ru.redguy.testtask;
import org.telegram.telegrambots.bots.TelegramLongPollingBot;
import org.telegram.telegrambots.meta.TelegramBotsApi;
import org.telegram.telegrambots.meta.api.methods.send.SendMessage;
import org.telegram.telegrambots.meta.api.objects.Update;
import org.telegram.telegrambots.meta.exceptions.TelegramApiException;
import org.telegram.telegrambots.updatesreceivers.DefaultBotSession;
import java.util.HashMap;
import static ru.redguy.testtask.Task3.ContractState.*;
public class Task3 {
public static void main(String[] args) throws TelegramApiException {
TelegramBotsApi telegramBotsApi = new TelegramBotsApi(DefaultBotSession.class);
telegramBotsApi.registerBot(new Bot(System.getenv("TOKEN")));
}
public static class TwoKeyMap<K, V> extends HashMap<K, V> {
//allow to get value by one of two keys
public void put(K key1, K key2, V value) {
super.put(key1, value);
super.put(key2, value);
}
}
public static class Contract {
public ContractState state = WAITING_FOR_SECOND_USER;
public long initiatorUserId;
public long secondUserId;
public Contract(long initiatorUserId, long secondUserId) {
this.initiatorUserId = initiatorUserId;
this.secondUserId = secondUserId;
}
}
public enum ContractState {
WAITING_FOR_SECOND_USER, //ожидание подтверждения начала контракта от второго пользователя
WAITING_FOR_INITIATOR_ACTION, //ожидание действия от инициатора
WAITING_FOR_SECOND_USER_APPROVE, //ожидание подтверждения от второго пользователя
WAITING_FOR_SECOND_USER_ACTION, //ожидание действия от второго пользователя
WAITING_FOR_INITIATOR_APPROVE, //ожидание подтверждения от инициатора
DONE, //контракт завершен
CANCELED, //контракт отменен
WAITING_FOR_SECOND_USER_CANCEL, //ожидание отмены от второго пользователя
WAITING_FOR_INITIATOR_CANCEL_APPROVE //ожидание подтверждения отмены от инициатора
}
public static class Bot extends TelegramLongPollingBot {
TwoKeyMap<Long, Contract> contracts = new TwoKeyMap<>();
public Bot(String botToken) {
super(botToken);
}
@Override
public void onUpdateReceived(Update update) {
if (update.hasMessage() && update.getMessage().hasText()) {
String text = update.getMessage().getText();
String[] parts = text.split(" ");
switch (parts[0]) {
case "/start" -> {
reply(update, "Привет, для начала контракта отправь /contract (user id)");
}
case "/contract" -> {
if (parts.length == 2) {
if (contracts.containsKey(update.getMessage().getFrom().getId())) {
reply(update, "У вас уже есть активный контракт");
break;
}
if (contracts.containsKey(Long.parseLong(parts[1]))) {
reply(update, "У пользователя уже есть активный контракт");
break;
}
contracts.put(update.getMessage().getFrom().getId(), Long.parseLong(parts[1]), new Contract(update.getMessage().getFrom().getId(), Long.parseLong(parts[1])));
reply(update, "Ожидание подтверждения от пользователя, для отмены отправьте /cancel");
sendMessage(Long.parseLong(parts[1]), "Пользователь " + update.getMessage().getFrom().getId() + " предлагает вам контракт, для подтверждения отправьте /accept, для отмены отправьте /cancel");
} else {
reply(update, "Неверное количество аргументов");
}
}
case "/accept" -> {
if (contracts.containsKey(update.getMessage().getFrom().getId())) {
Contract contract = contracts.get(update.getMessage().getFrom().getId());
if(contract.secondUserId != update.getMessage().getFrom().getId()) {
reply(update, "Вы не являетесь вторым пользователем в контракте");
break;
}
if (contract.state == ContractState.WAITING_FOR_SECOND_USER) {
contract.state = ContractState.WAITING_FOR_INITIATOR_ACTION;
reply(update, "Контракт подтвержден, ожидание действия от инициатора");
sendMessage(contract.initiatorUserId, "Контракт подтвержден, выполните действия со своей стороны, когда закончите отправьте /done");
} else {
reply(update, "Контракт уже подтвержден");
}
} else {
reply(update, "У вас нет активного контракта");
}
}
case "/done" -> {
if (contracts.containsKey(update.getMessage().getFrom().getId())) {
Contract contract = contracts.get(update.getMessage().getFrom().getId());
if (contract.initiatorUserId != update.getMessage().getFrom().getId()) {
reply(update, "Вы не являетесь инициатором в контракте");
break;
}
if (contract.state == ContractState.WAITING_FOR_INITIATOR_ACTION) {
contract.state = ContractState.WAITING_FOR_SECOND_USER_APPROVE;
reply(update, "Действие подтверждено, ожидание подтверждения от второго пользователя");
sendMessage(contract.secondUserId, "Пользователь " + update.getMessage().getFrom().getId() + " выполнил действие, для подтверждения отправьте /approve");
} else {
reply(update, "Действие уже подтверждено");
}
} else {
reply(update, "У вас нет активного контракта");
}
}
case "/approve" -> {
if (contracts.containsKey(update.getMessage().getFrom().getId())) {
Contract contract = contracts.get(update.getMessage().getFrom().getId());
if (contract.secondUserId != update.getMessage().getFrom().getId()) {
reply(update, "Вы не являетесь вторым пользователем в контракте");
break;
}
if (contract.state == ContractState.WAITING_FOR_SECOND_USER_APPROVE) {
contract.state = ContractState.WAITING_FOR_SECOND_USER_ACTION;
reply(update, "Действие подтверждено, ожидание ваших действий, когда закончите отправьте /ready");
sendMessage(contract.initiatorUserId, "Пользователь " + update.getMessage().getFrom().getId() + " подтвердил действие, ожидание действий от второй стороны");
} else {
reply(update, "Действие уже подтверждено");
}
} else {
reply(update, "У вас нет активного контракта");
}
}
case "/ready" -> {
if (contracts.containsKey(update.getMessage().getFrom().getId())) {
Contract contract = contracts.get(update.getMessage().getFrom().getId());
if (contract.secondUserId != update.getMessage().getFrom().getId()) {
reply(update, "Вы не являетесь пользователем в контракте");
break;
}
if (contract.state == ContractState.WAITING_FOR_SECOND_USER_ACTION) {
contract.state = ContractState.WAITING_FOR_INITIATOR_APPROVE;
reply(update, "Действие подтверждено, ожидание подтверждения от инициатора");
sendMessage(contract.initiatorUserId, "Пользователь " + update.getMessage().getFrom().getId() + " выполнил действие, для подтверждения отправьте /approved");
} else {
reply(update, "Действие уже подтверждено");
}
} else {
reply(update, "У вас нет активного контракта");
}
}
case "/approved" -> {
if (contracts.containsKey(update.getMessage().getFrom().getId())) {
Contract contract = contracts.get(update.getMessage().getFrom().getId());
if (contract.initiatorUserId != update.getMessage().getFrom().getId()) {
reply(update, "Вы не являетесь инициатором в контракте");
break;
}
if (contract.state == ContractState.WAITING_FOR_INITIATOR_APPROVE) {
contract.state = ContractState.DONE;
reply(update, "Действие подтверждено, контракт завершен");
sendMessage(contract.secondUserId, "Инициатор " + update.getMessage().getFrom().getId() + " подтвердил действие, контракт завершен");
contracts.remove(contract.initiatorUserId);
contracts.remove(contract.secondUserId);
} else {
reply(update, "Действие уже подтверждено");
}
} else {
reply(update, "У вас нет активного контракта");
}
}
case "/cancel" -> {
if (contracts.containsKey(update.getMessage().getFrom().getId())) {
Contract contract = contracts.get(update.getMessage().getFrom().getId());
if (contract.state == WAITING_FOR_SECOND_USER || contract.state == WAITING_FOR_INITIATOR_ACTION) {
contract.state = ContractState.CANCELED;
reply(update, "Контракт отменен");
sendMessage(contract.initiatorUserId, "Пользователь " + update.getMessage().getFrom().getId() + " отменил контракт");
contracts.remove(contract.initiatorUserId);
contracts.remove(contract.secondUserId);
} else if(contract.state == CANCELED || contract.state == DONE) {
reply(update, "Контракт уже отменен");
} else {
contract.state = ContractState.WAITING_FOR_SECOND_USER_CANCEL;
reply(update, "Контракт отменен, ожидание подтверждения от второго пользователя");
sendMessage(contract.secondUserId, "Пользователь " + update.getMessage().getFrom().getId() + " отменил контракт, для подтверждения отправьте /cancel_approve");
}
} else {
reply(update, "У вас нет активного контракта");
}
}
case "/cancel_approve" -> {
if (contracts.containsKey(update.getMessage().getFrom().getId())) {
Contract contract = contracts.get(update.getMessage().getFrom().getId());
if (contract.state == ContractState.WAITING_FOR_SECOND_USER_CANCEL) {
contract.state = ContractState.CANCELED;
reply(update, "Контракт отменен");
sendMessage(contract.initiatorUserId, "Пользователь " + update.getMessage().getFrom().getId() + " отменил контракт");
contracts.remove(contract.initiatorUserId);
contracts.remove(contract.secondUserId);
} else {
reply(update, "Контракт уже отменен");
}
} else {
reply(update, "У вас нет активного контракта");
}
}
}
}
}
public void reply(Update update, String text) {
try {
execute(new SendMessage(update.getMessage().getChat().getId().toString(), text));
} catch (TelegramApiException e) {
e.printStackTrace();
}
}
public void sendMessage(long userId, String text) {
try {
execute(new SendMessage(String.valueOf(userId), text));
} catch (TelegramApiException e) {
e.printStackTrace();
}
}
@Override
public String getBotUsername() {
return "Somertestbot";
}
@Override
public String getBotToken() {
return super.getBotToken();
}
}
}

View File

@ -0,0 +1,50 @@
package ru.redguy.testtask;
import org.jetbrains.annotations.NotNull;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.*;
public class Task4 {
public static void main(String[] args) throws Exception {
KeyPair keyPair = generateKeyPair();
saveKey(keyPair.getPrivate(), "privateKey.pem");
saveKey(keyPair.getPublic(), "publicKey.pem");
byte[] data = Files.readAllBytes(Paths.get("gradlew.bat"));
byte[] signature = sign(data, keyPair.getPrivate());
Files.write(Paths.get("gradlew.bat.sig"), signature);
boolean isVerified = verify(data, signature, keyPair.getPublic());
System.out.println("Signature verified: " + isVerified);
}
public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {
KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
keyPairGenerator.initialize(2048); // Размер ключа 2048 бит
return keyPairGenerator.generateKeyPair();
}
public static void saveKey(@NotNull Key key, String fileName) throws Exception {
byte[] keyBytes = key.getEncoded();
Files.write(Paths.get(fileName), keyBytes);
}
public static byte[] sign(byte[] data, PrivateKey privateKey) throws Exception {
Signature signature = Signature.getInstance("SHA256withRSA");
signature.initSign(privateKey);
signature.update(data);
return signature.sign();
}
public static boolean verify(byte[] data, byte[] signature, PublicKey publicKey) throws Exception {
Signature verifier = Signature.getInstance("SHA256withRSA");
verifier.initVerify(publicKey);
verifier.update(data);
return verifier.verify(signature);
}
}