initial commit

.gitignore

@@ -0,0 +1,22 @@
+# Rust
+/target/
+
+/build_all.sh
+
+/bindings/kotlin/src/main/kotlin/uniffi/
+/bindings/kotlin/src/main/resources/lib/
+/bindings/kotlin/src/main/resources/linux-x86-64/
+/bindings/kotlin/src/main/resources/win32-x86-64/
+
+/bindings/kotlin/build/
+/bindings/kotlin/target/
+/bindings/kotlin/.gradle/
+
+/bindings/kotlin/gradle.properties
+/bindings/kotlin/local.properties
+
+.DS_Store
+.idea/
+.vscode/
+*.swp
+*.bak

COPYING.LESSER

@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version.
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.

Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "jecna_supl_client"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+chrono = { version = "0.4.43", features = ["serde"] }
+futures = "0.3.31"
+once_cell = "1.21.3"
+reqwest = { version = "0.11", default-features = false, features = ["json", "rustls-tls"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+thiserror = "2.0.18"
+tokio = { version = "1", features = ["rt-multi-thread", "macros"] }
+tracing = "0.1.44"
+tracing-subscriber = "0.3.22"
+android_logger = "0.14"
+log = "0.4"
+uniffi = { version = "0.27", features = ["cli"] }
+
+[lib]
+crate-type = ["cdylib"]

README.md

@@ -0,0 +1,3 @@
+# Jecna Supl Client
+
+Simple rust library with Kotlin bindings for getting SPŠE Ječná Suplování from JecnaRozvrh parser API.

bindings/kotlin/build.gradle.kts

@@ -0,0 +1,153 @@
+plugins {
+    kotlin("jvm") version "2.1.0"
+    id("org.jetbrains.dokka") version "1.9.10"
+    `maven-publish`
+    signing
+}
+
+group = "cz.jzitnik"
+version = "0.1.0"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation(kotlin("stdlib"))
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.7.3")
+    implementation("net.java.dev.jna:jna:5.14.0") 
+}
+
+kotlin {
+    jvmToolchain(17)
+}
+
+// Exclude native libs from the main JAR
+tasks.named<Jar>("jar") {
+    exclude("linux-x86-64/**", "win32-x86-64/**")
+}
+
+// Maven Central requires unique Javadoc and Sources for EVERY artifact
+fun createComponentJars(componentName: String, artifactBaseName: String): Pair<TaskProvider<Jar>, TaskProvider<Jar>> {
+    val javadoc = tasks.register<Jar>("${componentName}JavadocJar") {
+        archiveBaseName.set(artifactBaseName)
+        archiveClassifier.set("javadoc")
+        from(tasks.dokkaJavadoc)
+    }
+    val sources = tasks.register<Jar>("${componentName}SourcesJar") {
+        archiveBaseName.set(artifactBaseName)
+        archiveClassifier.set("sources")
+        from(sourceSets.main.get().allSource)
+    }
+    return javadoc to sources
+}
+
+val (commonJavadoc, commonSources) = createComponentJars("common", "jecna-supl-client")
+val (linuxJavadoc, linuxSources) = createComponentJars("linux", "jecna-supl-client-linux-x64")
+val (androidJavadoc, androidSources) = createComponentJars("android", "jecna-supl-client-android")
+val (windowsJavadoc, windowsSources) = createComponentJars("windows", "jecna-supl-client-windows-x64")
+
+// Platform-specific JARs
+val linuxX64Jar by tasks.registering(Jar::class) {
+    archiveBaseName.set("jecna-supl-client-linux-x64")
+    from(sourceSets.main.get().resources) {
+        include("linux-x86-64/**")
+    }
+}
+
+val androidJar by tasks.registering(Jar::class) {
+    archiveBaseName.set("jecna-supl-client-android")
+    from(sourceSets.main.get().resources) {
+        include("lib/**")
+    }
+}
+
+val windowsX64Jar by tasks.registering(Jar::class) {
+    archiveBaseName.set("jecna-supl-client-windows-x64")
+    from(sourceSets.main.get().resources) {
+        include("win32-x86-64/**")
+    }
+}
+
+publishing {
+    publications {
+        create<MavenPublication>("common") {
+            artifactId = "jecna-supl-client"
+            from(components["java"])
+            artifact(commonJavadoc)
+            artifact(commonSources)
+            pom.configureMetadata("Jecna Supl Client")
+        }
+
+        create<MavenPublication>("linux") {
+            artifactId = "jecna-supl-client-linux-x64"
+            artifact(linuxX64Jar)
+            artifact(linuxJavadoc)
+            artifact(linuxSources)
+            pom.configureMetadata("Jecna Supl Client - Linux x64")
+        }
+
+        create<MavenPublication>("android") {
+            artifactId = "jecna-supl-client-android"
+            artifact(androidJar)
+            artifact(androidJavadoc)
+            artifact(androidSources)
+            pom.configureMetadata("Jecna Supl Client - Android")
+        }
+
+        create<MavenPublication>("windows") {
+            artifactId = "jecna-supl-client-windows-x64"
+            artifact(windowsX64Jar)
+            artifact(windowsJavadoc)
+            artifact(windowsSources)
+            pom.configureMetadata("Jecna Supl Client - Windows x64")
+        }
+    }
+
+    repositories {
+        maven {
+            name = "Staging"
+            url = uri(layout.buildDirectory.dir("staging-deploy"))
+        }
+    }
+}
+
+fun org.gradle.api.publish.maven.MavenPom.configureMetadata(nameStr: String) {
+    name.set(nameStr)
+    description.set("Kotlin bindings for the Jecna Supl Rust library")
+    url.set("https://gitea.jzitnik.dev/jzitnik/jecna-supl-client")
+    licenses {
+        license {
+            name.set("GNU Lesser General Public License, Version 3.0")
+            url.set("https://www.gnu.org/licenses/lgpl-3.0.txt")
+        }
+    }
+    developers {
+        developer {
+            id.set("jzitnik")
+            name.set("Jakub Žitník")
+            email.set("email@jzitnik.dev")
+        }
+    }
+    scm {
+        connection.set("scm:git:git://gitea.jzitnik.dev/jzitnik/jecna-supl-client.git")
+        developerConnection.set("scm:git:ssh://gitea.jzitnik.dev/jzitnik/jecna-supl-client.git")
+        url.set("https://gitea.jzitnik.dev/jzitnik/jecna-supl-client")
+    }
+}
+
+signing {
+    useGpgCmd()
+    sign(publishing.publications)
+}
+
+val zipBundle by tasks.registering(Zip::class) {
+    group = "publishing"
+    description = "Create a bundle for Sonatype Central manual upload"
+    from(layout.buildDirectory.dir("staging-deploy"))
+    archiveFileName.set("sonatype-bundle.zip")
+    dependsOn("publishCommonPublicationToStagingRepository", 
+              "publishLinuxPublicationToStagingRepository", 
+              "publishAndroidPublicationToStagingRepository", 
+              "publishWindowsPublicationToStagingRepository")
+}

bindings/kotlin/gradle.properties.example

@@ -0,0 +1,7 @@
+# Sonatype Central User Token
+sonatypeUsername=AWUj0F
+sonatypePassword=dcOYghgesyckc4UXdwqaGIFkTumEcfbCo
+
+# GPG Signing (using local GPG command)
+signing.gnupg.keyName=A6AF4EF3
+# signing.gnupg.passphrase=... (if not using gpg-agent)

bindings/kotlin/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-rc-4-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

bindings/kotlin/gradlew

@@ -0,0 +1,249 @@
+#!/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='-Dfile.encoding=UTF-8 "-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 "$JAVACMD" "$@"

bindings/kotlin/pom.xml

@@ -0,0 +1,133 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>cz.jzitnik</groupId>
+    <artifactId>jecna-supl-client</artifactId>
+    <version>0.1.0</version>
+    <name>Jecna Supl Client</name>
+    <description>Kotlin bindings for the Jecna Supl Rust library</description>
+    <url>https://gitea.jzitnik.dev/jzitnik/jecna-supl-client</url>
+
+    <licenses>
+        <license>
+            <name>GNU Lesser General Public License v3.0</name>
+            <url>https://www.gnu.org/licenses/lgpl-3.0.html</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <developers>
+        <developer>
+            <id>jzitnik</id>
+            <name>Jakub Žitník</name>
+            <email>email@jzitnik.dev</email>
+        </developer>
+    </developers>
+
+    <scm>
+        <connection>scm:git:git://gitea.jzitnik.dev/jzitnik/jecna-supl-client.git</connection>
+        <developerConnection>scm:git:ssh://gitea.jzitnik.dev/jzitnik/jecna-supl-client.git</developerConnection>
+        <url>https://gitea.jzitnik.dev/jzitnik/jecna-supl-client</url>
+    </scm>
+
+    <properties>
+        <kotlin.version>2.1.0</kotlin.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib</artifactId>
+            <version>${kotlin.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlinx</groupId>
+            <artifactId>kotlinx-coroutines-core</artifactId>
+            <version>1.7.3</version>
+        </dependency>
+        <dependency>
+            <groupId>net.java.dev.jna</groupId>
+            <artifactId>jna</artifactId>
+            <version>5.14.0</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <sourceDirectory>src/main/kotlin</sourceDirectory>
+        <plugins>
+            <plugin>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <version>${kotlin.version}</version>
+                <executions>
+                    <execution>
+                        <id>compile</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <!-- GPG Signing Plugin for Maven -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-gpg-plugin</artifactId>
+                <version>3.1.0</version>
+                <executions>
+                    <execution>
+                        <id>sign-artifacts</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>sign</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <!-- Sources and Javadoc plugins are also required for Maven Central -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>3.3.0</version>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.jetbrains.dokka</groupId>
+                <artifactId>dokka-maven-plugin</artifactId>
+                <version>1.9.10</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>javadocJar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <distributionManagement>
+        <snapshotRepository>
+            <id>ossrh</id>
+            <url>https://central.sonatype.com/content/repositories/snapshots</url>
+        </snapshotRepository>
+        <repository>
+            <id>ossrh</id>
+            <url>https://central.sonatype.com/maven2/</url>
+        </repository>
+    </distributionManagement>
+</project>

bindings/kotlin/settings.gradle

@@ -0,0 +1,8 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "jecna-supl-client"

bindings/kotlin/settings.xml

@@ -0,0 +1,12 @@
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
+                      https://maven.apache.org/xsd/settings-1.0.0.xsd">
+  <servers>
+    <server>
+      <id>ossrh</id>
+      <username>AWUj0F</username>
+      <password>dcOYghgesyckc4UXdwqaGIFkTumEcfbCo</password>
+    </server>
+  </servers>
+</settings>

src/bin/uniffi-bindgen.rs

@@ -0,0 +1,3 @@
+fn main() {
+    uniffi::uniffi_bindgen_main()
+}

src/lib.rs

@@ -0,0 +1,239 @@
+use chrono::{Datelike, Local, NaiveDate, Weekday};
+use once_cell::sync::Lazy;
+use serde::Deserialize;
+use std::collections::HashMap;
+use std::sync::{Once, RwLock};
+use tokio::runtime::Runtime;
+use tracing::{debug, error, info};
+
+uniffi::setup_scaffolding!();
+
+static RUNTIME: Lazy<Runtime> =
+    Lazy::new(|| Runtime::new().expect("Failed to create Tokio runtime"));
+
+static INIT_TRACING: Once = Once::new();
+
+#[derive(Debug, thiserror::Error, uniffi::Error)]
+pub enum SuplError {
+    #[error("Network error: {reason}")]
+    NetworkError { reason: String },
+    #[error("Parse error: {reason}")]
+    ParseError { reason: String },
+    #[error("Invalid date format: {reason}")]
+    DateFormatError { reason: String },
+    #[error("Internal runtime error: {reason}")]
+    RuntimeError { reason: String },
+}
+
+#[derive(Deserialize)]
+struct ApiResponse {
+    schedule: Vec<HashMap<String, serde_json::Value>>,
+    props: Vec<DayProp>,
+    status: Status,
+}
+
+#[derive(Deserialize)]
+struct DayProp {
+    date: String,
+    #[allow(dead_code)]
+    priprava: bool,
+}
+
+#[derive(Debug, Deserialize, uniffi::Record)]
+pub struct Status {
+    #[serde(rename = "lastUpdated")]
+    pub last_updated: String,
+
+    #[serde(rename = "currentUpdateSchedule")]
+    pub current_update_schedule: u16,
+}
+
+#[derive(uniffi::Record)]
+pub struct SuplResult {
+    pub status: Status,
+    pub schedule: Vec<DailySchedule>,
+}
+
+#[derive(uniffi::Record)]
+pub struct DailySchedule {
+    pub date: String,
+    pub lessons: Vec<Option<String>>,
+}
+
+#[derive(uniffi::Object)]
+pub struct JecnaSuplClient {
+    provider_url: RwLock<String>,
+    client: reqwest::Client,
+}
+
+#[uniffi::export]
+impl JecnaSuplClient {
+    #[uniffi::constructor]
+    pub fn new() -> Self {
+        INIT_TRACING.call_once(|| {
+            #[cfg(target_os = "android")]
+            android_logger::init_once(
+                android_logger::Config::default()
+                    .with_max_level(log::LevelFilter::Debug)
+                    .with_tag("JecnaSuplClient"),
+            );
+
+            #[cfg(not(target_os = "android"))]
+            tracing_subscriber::fmt()
+                .with_max_level(tracing::Level::DEBUG)
+                .init();
+        });
+
+        info!("Initializing JecnaSuplClient");
+        Self {
+            provider_url: RwLock::new("https://jecnarozvrh.jzitnik.dev".to_string()),
+            client: reqwest::Client::new(),
+        }
+    }
+
+    pub fn set_provider(&self, url: String) {
+        let mut provider = self.provider_url.write().unwrap();
+        *provider = url;
+    }
+
+    pub fn get_schedule(&self, class_name: String) -> Result<SuplResult, SuplError> {
+        let url = {
+            let provider = self.provider_url.read().unwrap();
+            let trimmed = provider.trim_end_matches('/');
+            format!("{}/versioned/v2", trimmed)
+        };
+        debug!("Target URL: {}", url);
+
+        let client = self.client.clone();
+        let class_name_clone = class_name.clone();
+
+        let (tx, rx) = std::sync::mpsc::channel();
+
+        RUNTIME.spawn(async move {
+            let result = async {
+                let resp = client.get(&url).send().await.map_err(|e| {
+                    error!("Network request failed: {}", e);
+                    SuplError::NetworkError {
+                        reason: e.to_string(),
+                    }
+                })?;
+
+                let resp_text = resp.text().await.map_err(|e| {
+                    error!("Failed to read response text: {}", e);
+                    SuplError::NetworkError {
+                        reason: e.to_string(),
+                    }
+                })?;
+
+                if resp_text.trim().is_empty() {
+                    error!("Received empty response body from {}", url);
+                    return Err(SuplError::ParseError {
+                        reason: "Empty response body".to_string(),
+                    });
+                }
+
+                let resp: ApiResponse = serde_json::from_str(&resp_text).map_err(|e| {
+                    error!("JSON parse error: {}. Position: line {}, col {}. Response content: {}", e, e.line(), e.column(), resp_text);
+                    SuplError::ParseError {
+                        reason: e.to_string(),
+                    }
+                })?;
+
+                debug!("Successfully parsed response");
+                Ok::<ApiResponse, SuplError>(resp)
+            }
+            .await;
+
+            let _ = tx.send(result);
+        });
+
+        let result = rx.recv().map_err(|e| {
+            error!("Mpsc receive error: {}", e);
+            SuplError::RuntimeError {
+                reason: "Channel closed".to_string(),
+            }
+        })??;
+
+        let today = Local::now().date_naive();
+        let current_weekday = today.weekday();
+        debug!("Current date: {}, weekday: {:?}", today, current_weekday);
+
+        let start_date;
+        let end_date;
+
+        match current_weekday {
+            Weekday::Sat | Weekday::Sun => {
+                // Next Monday
+                let days_until_mon = 7 - current_weekday.num_days_from_monday();
+                let next_mon = today + chrono::Duration::days(days_until_mon as i64);
+                start_date = next_mon;
+                end_date = next_mon + chrono::Duration::days(4); // Mon -> Fri is 4 days diff
+                info!(
+                    "Weekend detected. Showing next week: {} to {}",
+                    start_date, end_date
+                );
+            }
+            _ => {
+                // Current Monday
+                let days_from_mon = current_weekday.num_days_from_monday();
+                let curr_mon = today - chrono::Duration::days(days_from_mon as i64);
+                start_date = curr_mon;
+                end_date = curr_mon + chrono::Duration::days(4);
+                info!(
+                    "Weekday detected. Showing current week: {} to {}",
+                    start_date, end_date
+                );
+            }
+        }
+
+        let mut output = Vec::new();
+
+        for (i, day_prop) in result.props.iter().enumerate() {
+            let date = NaiveDate::parse_from_str(&day_prop.date, "%Y-%m-%d").map_err(|e| {
+                error!("Date parsing error for {}: {}", day_prop.date, e);
+                SuplError::DateFormatError {
+                    reason: e.to_string(),
+                }
+            })?;
+
+            if date >= start_date && date <= end_date {
+                if let Some(day_schedule_map) = result.schedule.get(i) {
+                    if let Some(class_schedule_val) = day_schedule_map.get(&class_name_clone) {
+                        match serde_json::from_value::<Vec<Option<String>>>(
+                            class_schedule_val.clone(),
+                        ) {
+                            Ok(lessons) => {
+                                output.push(DailySchedule {
+                                    date: day_prop.date.clone(),
+                                    lessons,
+                                });
+                            }
+                            Err(e) => {
+                                error!(
+                                    "Failed to parse schedule for class {}: {}",
+                                    class_name_clone, e
+                                );
+                                return Err(SuplError::ParseError {
+                                    reason: format!(
+                                        "Invalid schedule format for class {}",
+                                        class_name_clone
+                                    ),
+                                });
+                            }
+                        }
+                    } else {
+                        debug!(
+                            "Class {} not found in schedule for {}",
+                            class_name_clone, date
+                        );
+                    }
+                }
+            }
+        }
+
+        Ok(SuplResult {
+            status: result.status,
+            schedule: output,
+        })
+    }
+}