12 files changed, 666 insertions, 0 deletions
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..d82dff6
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,22 @@
+plugins {
+    id 'java'
+}
+
+group = 'info.selflearner'
+version = '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'com.github.pengrad:java-telegram-bot-api:7.11.0'
+    implementation group: 'net.sourceforge.tess4j', name: 'tess4j', version: '5.13.0'
+    implementation group: 'org.json', name: 'json', version: '20250107'
+    testImplementation platform('org.junit:junit-bom:5.10.0')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+}
+
+test {
+    useJUnitPlatform()
+}
+\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..249e583
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.jar
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..92420ce
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Sat Jan 25 14:20:50 MVT 2025
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..1b6c787
--- /dev/null
+++ b/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 "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..ac1b06f
--- /dev/null
+++ b/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
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..47106cf
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = 'ocr-telegram'
+
diff --git a/src/main/java/info/selflearner/ocr_telegram/Application.java b/src/main/java/info/selflearner/ocr_telegram/Application.java
new file mode 100644
index 0000000..eacdfd4
--- /dev/null
+++ b/src/main/java/info/selflearner/ocr_telegram/Application.java
@@ -0,0 +1,93 @@
+package info.selflearner.ocr_telegram;
+
+import com.pengrad.telegrambot.TelegramBot;
+import com.pengrad.telegrambot.UpdatesListener;
+import com.pengrad.telegrambot.model.PhotoSize;
+import com.pengrad.telegrambot.model.request.ParseMode;
+import com.pengrad.telegrambot.request.GetFile;
+import com.pengrad.telegrambot.request.SendMessage;
+import com.pengrad.telegrambot.response.GetFileResponse;
+import info.selflearner.ocr_telegram.exception.PassportNotFoundException;
+import info.selflearner.ocr_telegram.model.Passport;
+import info.selflearner.ocr_telegram.util.FileContentReader;
+import info.selflearner.ocr_telegram.util.OCR;
+
+import java.io.*;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.channels.Channels;
+import java.nio.channels.FileChannel;
+import java.nio.channels.ReadableByteChannel;
+import java.util.ResourceBundle;
+
+public class Application {
+
+    public static void main(String[] args) {
+        TelegramBot bot = new TelegramBot(ResourceBundle.getBundle("secrets").getString("BOT_TOKEN"));
+
+        bot.setUpdatesListener(updateList -> {
+            if (updateList.getFirst().message() != null && updateList.getFirst().message().text() != null) {
+                long chatId = updateList.getFirst().message().chat().id();
+
+                bot.execute(new SendMessage(chatId, "Message received: " + updateList.getFirst().message().text()));
+            }
+
+            if (updateList.getFirst().message() != null && updateList.getFirst().message().photo() != null) {
+                long chatId = updateList.getFirst().message().chat().id();
+
+                PhotoSize[] photoSizes = updateList.getFirst().message().photo();
+                PhotoSize highestQualityPhotoSize = photoSizes[photoSizes.length - 1];
+                GetFile request = new GetFile(highestQualityPhotoSize.fileId());
+                GetFileResponse getFileResponse = bot.execute(request);
+
+                try {
+                    URL photoURL = new URI(bot.getFullFilePath(getFileResponse.file())).toURL();
+
+                    ReadableByteChannel readableByteChannel = Channels.newChannel(photoURL.openStream());
+                    File photo = new File(System.getProperty("java.io.tmpdir") + "/ocr-telegram/" + getFileResponse.file().filePath());
+                    File ocrFile = new File(System.getProperty("java.io.tmpdir") + "/ocr-telegram/ocr/" + getFileResponse.file().filePath().split("/")[1] + ".txt");
+
+                    bot.execute(new SendMessage(chatId, "Processing, please wait..."));
+
+                    new File(System.getProperty("java.io.tmpdir") + "/ocr-telegram/photos/").mkdirs();
+                    new File(System.getProperty("java.io.tmpdir") + "/ocr-telegram/ocr/").mkdirs();
+
+                    if (!photo.exists()) {
+                        try (FileOutputStream fileOutputStream = new FileOutputStream(photo)) {
+                            FileChannel fileChannel = fileOutputStream.getChannel();
+                            fileChannel.transferFrom(readableByteChannel, 0, Long.MAX_VALUE);
+                        } catch (IOException ioException) {
+                            throw new RuntimeException(ioException);
+                        }
+                    }
+                    if (!ocrFile.exists()) {
+                        Passport passport = OCR.performPassport(photo);
+
+                        try (BufferedWriter writer = new BufferedWriter(new FileWriter(ocrFile))) {
+                            writer.write(passport.toString());
+                        }
+                    }
+
+                    bot.execute(new SendMessage(chatId, FileContentReader.read(ocrFile)).parseMode(ParseMode.Markdown));
+                } catch (URISyntaxException | IOException | InterruptedException e) {
+                    throw new RuntimeException(e);
+                } catch (PassportNotFoundException e) {
+                    bot.execute(new SendMessage(chatId, "Passport not found!"));
+                }
+            }
+
+            return UpdatesListener.CONFIRMED_UPDATES_ALL;
+        }, telegramException -> {
+            if (telegramException.response() != null) {
+                // got bad response from telegram
+                telegramException.response().errorCode();
+                telegramException.response().description();
+            } else {
+                // probably network error
+                telegramException.printStackTrace();
+            }
+        });
+    }
+
+}
+\ No newline at end of file
diff --git a/src/main/java/info/selflearner/ocr_telegram/exception/PassportNotFoundException.java b/src/main/java/info/selflearner/ocr_telegram/exception/PassportNotFoundException.java
new file mode 100644
index 0000000..50cb8f7
--- /dev/null
+++ b/src/main/java/info/selflearner/ocr_telegram/exception/PassportNotFoundException.java
@@ -0,0 +1,7 @@
+package info.selflearner.ocr_telegram.exception;
+
+public class PassportNotFoundException extends Exception {
+    public PassportNotFoundException(String errorMessage) {
+        super(errorMessage);
+    }
+}
diff --git a/src/main/java/info/selflearner/ocr_telegram/model/Passport.java b/src/main/java/info/selflearner/ocr_telegram/model/Passport.java
new file mode 100644
index 0000000..4e8a0a7
--- /dev/null
+++ b/src/main/java/info/selflearner/ocr_telegram/model/Passport.java
@@ -0,0 +1,70 @@
+package info.selflearner.ocr_telegram.model;
+
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
+public class Passport {
+    public char type;
+    public Character subtype;
+    public String issuer;
+    public String surname;
+    public String givenNames;
+    public String number;
+    public String nationality;
+    public LocalDate dateOfBirth;
+    public Character sex;
+    public LocalDate expirationDate;
+    public String personalNumber;
+    public int[] mrzLinesConfidence;
+
+    public Passport(char type, Character subtype, String issuer, String surname, String givenNames, String number, String nationality, LocalDate dateOfBirth, Character sex, LocalDate expirationDate, String personalNumber, int[] mrzLinesConfidence) {
+        this.type = type;
+        this.subtype = subtype;
+        this.issuer = issuer;
+        this.surname = surname;
+        this.givenNames = givenNames;
+        this.number = number;
+        this.nationality = nationality;
+        this.dateOfBirth = dateOfBirth;
+        this.sex = sex;
+        this.expirationDate = expirationDate;
+        this.personalNumber = personalNumber;
+        this.mrzLinesConfidence = mrzLinesConfidence;
+    }
+
+    public Passport(String[] mrzLines, int[] mrzLinesConfidence) {
+        this.type = mrzLines[0].charAt(0);
+        this.subtype = mrzLines[0].charAt(1) == '<' ? null : mrzLines[0].charAt(0);
+        this.issuer = mrzLines[0].substring(2, 5);
+        this.surname = mrzLines[0].substring(5, mrzLines[0].indexOf('<', 6));
+        this.givenNames = mrzLines[0].substring(surname.length() + 7, mrzLines[0].indexOf('<', surname.length() + 8));
+        this.number = mrzLines[1].substring(0, 9);
+        this.nationality = mrzLines[1].substring(10, 13);
+        if (Integer.parseInt("20" + mrzLines[1].substring(13, 15)) < LocalDate.now().getYear()) {
+            this.dateOfBirth = LocalDate.of(Integer.parseInt("20" + mrzLines[1].substring(13, 15)), Integer.parseInt(mrzLines[1].substring(15, 17)), Integer.parseInt(mrzLines[1].substring(17, 19)));
+        } else {
+            this.dateOfBirth = LocalDate.of(Integer.parseInt("19" + mrzLines[1].substring(13, 15)), Integer.parseInt(mrzLines[1].substring(15, 17)), Integer.parseInt(mrzLines[1].substring(17, 19)));
+        }
+        this.sex = mrzLines[1].charAt(20) != '<' ? mrzLines[1].charAt(20) : null;
+        this.expirationDate = LocalDate.of(Integer.parseInt("20" + mrzLines[1].substring(21, 23)), Integer.parseInt(mrzLines[1].substring(23, 25)), Integer.parseInt(mrzLines[1].substring(25, 27)));
+        this.personalNumber = mrzLines[1].substring(28, 42);
+        this.mrzLinesConfidence = mrzLinesConfidence;
+    }
+
+    @Override
+    public String toString() {
+        return "*Passport*\n" +
+                "Type: `" + type + "`\n" +
+                "Subtype: `" + subtype + "`\n" +
+                "Issuer: `" + issuer + "`\n" +
+                "Surname: `" + surname + "`\n" +
+                "Given names: `" + givenNames + "`\n" +
+                "Number: `" + number + "`\n" +
+                "Nationality: `" + nationality + "`\n" +
+                "Date of birth: `" + dateOfBirth.format(DateTimeFormatter.ofPattern("dd.MM.yyyy")) + "`\n" +
+                "Gender: `" + sex + "`\n" +
+                "Expiration date: `" + expirationDate.format(DateTimeFormatter.ofPattern("dd.MM.yyyy")) + "`\n" +
+                "Personal number: `" + personalNumber + "`\n";
+    }
+}
+
diff --git a/src/main/java/info/selflearner/ocr_telegram/util/FileContentReader.java b/src/main/java/info/selflearner/ocr_telegram/util/FileContentReader.java
new file mode 100644
index 0000000..34123c5
--- /dev/null
+++ b/src/main/java/info/selflearner/ocr_telegram/util/FileContentReader.java
@@ -0,0 +1,22 @@
+package info.selflearner.ocr_telegram.util;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+
+public class FileContentReader {
+
+    public static String read(File file) throws IOException {
+        try(FileReader fileReader = new FileReader(file)) {
+            StringBuilder content = new StringBuilder();
+            int nextChar;
+
+            while ((nextChar = fileReader.read()) != -1) {
+                content.append((char) nextChar);
+            }
+
+            return String.valueOf(content);
+        }
+    }
+
+}
diff --git a/src/main/java/info/selflearner/ocr_telegram/util/OCR.java b/src/main/java/info/selflearner/ocr_telegram/util/OCR.java
new file mode 100644
index 0000000..55e577f
--- /dev/null
+++ b/src/main/java/info/selflearner/ocr_telegram/util/OCR.java
@@ -0,0 +1,120 @@
+package info.selflearner.ocr_telegram.util;
+
+import info.selflearner.ocr_telegram.exception.PassportNotFoundException;
+import info.selflearner.ocr_telegram.model.Passport;
+import net.sourceforge.tess4j.*;
+import net.sourceforge.tess4j.util.LoadLibs;
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.geom.AffineTransform;
+import java.awt.image.AffineTransformOp;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+public class OCR {
+    private static final ITesseract TESSERACT = new Tesseract();
+
+    static {
+        TESSERACT.setDatapath("src/main/resources/tessdata/");
+        TESSERACT.setVariable("user_defined_dpi", "300");
+        System.setProperty("java.library.path", LoadLibs.extractTessResources("win32-x86-64").getPath());
+    }
+
+    public static String perform(File file, String languages) throws TesseractException {
+        TESSERACT.setLanguage(languages);
+        String ocrResult = TESSERACT.doOCR(file);
+        file.delete();
+        return ocrResult;
+    }
+
+    public static Passport performPassport(File file) throws IOException, InterruptedException, PassportNotFoundException {
+        for (int imageRotateAngle = 0; imageRotateAngle <= 270; imageRotateAngle += 90) {
+            if (imageRotateAngle == 90) {
+                System.out.println("Rotating image to 90 degrees...");
+                rotateImageVertically(file, true);
+            } else if (imageRotateAngle == 180) {
+                System.out.println("Rotating image to 180 degrees...");
+                rotateImageHorizontally(file);
+            } else if (imageRotateAngle == 270) {
+                System.out.println("Rotating image to 270 degrees...");
+                rotateImageVertically(file, false);
+            }
+
+            Runtime.getRuntime().exec(new String[]{"surya_ocr", file.getPath(), "--results_dir", System.getProperty("java.io.tmpdir"), "--langs=en"}).waitFor();
+            JSONArray jsonTextLines = new JSONObject(Files.readAllLines(Path.of(System.getProperty("java.io.tmpdir"), "/", file.getName().split("\\.")[0], "/results.json")).getFirst())
+                    .getJSONArray(file.getName().split("\\.")[0]).getJSONObject(0).getJSONArray("text_lines");
+            int mrzStartingIndex = -1;
+
+            for (int arrayIndex = 0; arrayIndex < jsonTextLines.length() && mrzStartingIndex == -1; arrayIndex++) {
+                if (jsonTextLines.getJSONObject(arrayIndex).getString("text").indexOf("P<") == 0) {
+                    mrzStartingIndex = arrayIndex;
+                }
+            }
+
+            if (mrzStartingIndex != -1) {
+                System.out.println("MRZ1: " + jsonTextLines.getJSONObject(mrzStartingIndex).getString("text"));
+                System.out.println("MRZ2: " + jsonTextLines.getJSONObject(mrzStartingIndex + 1).getString("text"));
+                try {
+                    return new Passport(new String[]{jsonTextLines.getJSONObject(mrzStartingIndex).getString("text"), jsonTextLines.getJSONObject(mrzStartingIndex + 1).getString("text")},
+                            new int[]{(int) (jsonTextLines.getJSONObject(mrzStartingIndex).getDouble("confidence") * 100), (int) (jsonTextLines.getJSONObject(mrzStartingIndex + 1).getDouble("confidence") * 100)});
+                } catch (Exception _) {
+
+                }
+            }
+        }
+        throw new PassportNotFoundException("Passport not found");
+    }
+
+    private static void rotateImageVertically(File image, boolean counterClockwise) throws IOException {
+        BufferedImage bufferedImage = ImageIO.read(image);
+        BufferedImage output = new BufferedImage(bufferedImage.getHeight(), bufferedImage.getWidth(), bufferedImage.getType());
+
+        AffineTransform affineTransform = getAffineTransform(counterClockwise, bufferedImage);
+
+        AffineTransformOp affineTransformOp = new AffineTransformOp(affineTransform, AffineTransformOp.TYPE_BILINEAR);
+        affineTransformOp.filter(bufferedImage, output);
+
+        ImageIO.write(output, "jpg", image);
+    }
+
+    public static void rotateImageHorizontally(File image) throws IOException {
+        BufferedImage imageToRotate = ImageIO.read(image);
+
+        int widthOfImage = imageToRotate.getWidth();
+        int heightOfImage = imageToRotate.getHeight();
+        int typeOfImage = imageToRotate.getType();
+
+        BufferedImage output = new BufferedImage(widthOfImage, heightOfImage, typeOfImage);
+
+        Graphics2D graphics2D = output.createGraphics();
+
+        graphics2D.rotate(Math.toRadians(180), widthOfImage / 2.0, heightOfImage / 2.0);
+        graphics2D.drawImage(imageToRotate, null, 0, 0);
+
+        ImageIO.write(output, "jpg", image);
+    }
+
+    private static AffineTransform getAffineTransform(boolean counterClockwise, BufferedImage bufferedImage) {
+        int imageWidth = bufferedImage.getWidth();
+        int imageHeight = bufferedImage.getHeight();
+
+        AffineTransform affineTransform = new AffineTransform();
+        affineTransform.rotate((!counterClockwise ? Math.PI : -Math.PI) / 2, imageWidth / 2.0, imageHeight / 2.0);
+
+        double offset = (imageWidth - imageHeight) / 2.0;
+        if (!counterClockwise) {
+            affineTransform.translate(offset, offset);
+        } else {
+            affineTransform.translate(-offset, -offset);
+        }
+        return affineTransform;
+    }
+
+}
+
diff --git a/src/main/resources/secrets.properties b/src/main/resources/secrets.properties
new file mode 100644
index 0000000..c85bd26
--- /dev/null
+++ b/src/main/resources/secrets.properties
@@ -0,0 +1 @@
+BOT_TOKEN=7609685856:AAGKF3Ld_OYqwsJ7a0b4oEknjJiqj8DJaWk
+\ No newline at end of file