VREM Upgrade

.gitattributes

@@ -0,0 +1,6 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# These are explicitly windows files and should use crlf
+*.bat           text eol=crlf
+

.gitignore

@@ -1,14 +1,10 @@
-# Ignore IntellJ project files
-.idea/**
-.gradle/**
-*.iml
-# Ignore IntelliJ build files
-out/**
-
-# Ignore build files
-build/**
-out/**
+### Generic ###
+data/
+logs/
+.idea/
+out/
 
+### Kotlin ###
 # Compiled class file
 *.class
 
@@ -33,6 +29,21 @@ out/**
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
 
-# Temp files
-*~
-*.DS_Store
+### Gradle ###
+.gradle/
+build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+
+# Cache of project
+.gradletasknamecache
+
+# # Work around https://youtrack.jetbrains.com/issue/IDEA-116898
+# gradle/wrapper/gradle-wrapper.properties
+
+### Gradle Patch ###
+**/build/

.travis.yml

@@ -1,12 +1,10 @@
 language: java
 
-matrix:
-  include:
-    - os: linux
-      jdk:
-        - openjdk11
-    - os: osx
-      osx_image: xcode11
+os: linux
+
+jdk:
+  - openjdk11
+  - openjdk12
 
 before_cache:
   - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
@@ -17,5 +15,4 @@ cache:
     - $HOME/.gradle/wrapper/
 
 script: 
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then ./gradlew check          ; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then ./gradlew check        ; fi
+  - ./gradlew check

README.md

@@ -1,43 +1,62 @@
 # Virtual Reality Exhibition Manager (VREM)
-[![Build Status](https://travis-ci.org/VIRTUE-DBIS/virtual-exhibition-manager.svg?branch=master)](https://travis-ci.org/VIRTUE-DBIS/virtual-exhibition-manager)
 
-The Virtual Reality Exhibition Manager (VREM) is a tool that allows for configuration, storage of and access to VR exhibition definitions.
-This is the Backend. For the front end in Unity see [VREP](https://github.com/dbisUnibas/virtual-exhibition-presenter).
-For the User Interface see [VREM-UI](https://github.com/sauterl/virtual-exhibition-manager-ui)
-It has been created as part of the [Open Cultural Data Hackathon 2018](http://make.opendata.ch/wiki/event:2018-10), held in Zurich, Switzerland.
+[![Build Status](https://travis-ci.org/VIRTUE-DBIS/virtual-exhibition-manager.svg?branch=master)](https://travis-ci.org/VIRTUE-DBIS/virtual-exhibition-manager)
 
+The Virtual Reality Exhibition Manager (VREM) is a tool that allows for configuration, storage of and access to VR
+exhibition definitions.   
+While VREM acts as a back end, the exhibitions can be viewed in
+the [Virtual Exhibition Presenter (VREP)](https://github.com/dbisUnibas/virtual-exhibition-presenter) (Unity).  
+For the Angular UI see [VREM-UI](https://github.com/sauterl/virtual-exhibition-manager-ui). It has been created as part
+of the [Open Cultural Data Hackathon 2018](http://make.opendata.ch/wiki/event:2018-10), held in Zurich, Switzerland.
 
 ## Prerequisites
 
-Below is a very shortened version of the [setup guide](https://github.com/VIRTUE-DBIS/virtual-exhibition-presenter/wiki/Setup-Guide) on how to setup VREM.
+Below is a very shortened version of
+the [setup guide](https://github.com/VIRTUE-DBIS/virtual-exhibition-presenter/wiki/Setup-Guide) on how to setup VREM.
 
 ### System dependencies
-* git
-* JDK 8 or higher
-* You will require [MongoDB](https://docs.mongodb.com/manual/installation/) as storage engine. We recommend using [Docker](https://www.docker.com).
-If you have installed docker, you can start a new container using `docker run --name vrem-container -d -p 27017:27017 mongo`. If you already have a container, restart it using `docker start mongo`.
-If you're on a unix-system, use the `startdb.sh` script.
+
+* Git
+* JDK 11 or higher
+* You will require [MongoDB](https://docs.mongodb.com/manual/installation/) as storage engine. We recommend
+  using [Docker](https://www.docker.com). If you have installed docker, you can start a new container
+  using `docker run --name vrem-container -d -p 27017:27017 mongo`. If you already have a container, restart it
+  using `docker start mongo`. If you're on a unix-system, use the `launch_db.sh` script.
 
 ## Building VREM
-VREM can be built using [Gradle](http://gradle.org/). Building and running it is as easy as
+
+VREM can be built using [Gradle](http://gradle.org/). Building and running it is as simple as:
+
 ```
  ./gradlew clean deploy
- java -jar build/libs/vrem.jar
- java -jar vrem.jar <command>
+ cd build/libs
+ java -jar virtual-exhibition-manager-2.0.0-SNAPSHOT.jar
+ java -jar virtual-exhibition-manager-2.0.0-SNAPSHOT.jar <command>
  ```
 
+Make sure you have the correct working directory set so VREM can properly import exhibitions and serve content.
+
 ## Starting a server
 
-Before starting, you must adapt the configurations in your config.json file (see example file). Then you can start the VREM server 
-by typing into your console:
+Before starting, you should adapt the configurations in your config.json file (see example file).  
+After doing so, you may serve stored exhibitions by running VREM with the following command:
 
 ```
- java -jar build/libs/virtual-exhibition-manager-1.2.jar server -c /path/to/your/config.json
+ java -jar virtual-exhibition-manager-2.0.0-SNAPSHOT.jar server -c /path/to/your/config.json
 ```
 
-## Importing a  collection
-As an exmple, consider the following command:
+## Importing an exhibition
+
+By using the `import-folder` command, you can import a stored exhibition to the running MongoDB instance in order to be
+able to serve the exhibition via the `server`command afterwards.  
+The following command imports a collection from the `data/import/my_exhibition` folder (relative to VREM's directory):
 
 ```
-import-folder --path ../vre-mixnhack19/exhibition --config mixnhack19.json --name "mixnhack19" --description "Exhibition for Mix'n'Hack 2019" --clean
+import-folder --config=config.json --path=data/import/my_exhibition --name=demo
 ```
+
+Since the images themselves are not stored in the database, VREP will maintain a folder containing the exhibition images
+in `data/` (relative to VREM).
+
+For an exhibition example, consult the repository
+at [https://github.com/VIRTUE-DBIS/vre-mixnhack19](https://github.com/VIRTUE-DBIS/vre-mixnhack19).

build.gradle

@@ -1,51 +1,77 @@
 plugins {
+    id 'org.jetbrains.kotlin.jvm' version "$kotlinVersion"
+    id 'org.jetbrains.kotlin.plugin.serialization' version "$kotlinVersion"
+    id 'org.openapi.generator' version "$openApiGenVersion"
     id 'java'
+    id 'application'
+    id 'idea'
 }
 
-group 'ch.unibas.dmi.dbis'
-version '1.2'
-
-sourceCompatibility = 1.8
-
-repositories {
-    mavenCentral()
-}
-
-dependencies {
-
-    implementation group: 'com.google.code.gson', name: 'gson', version: '2.7'
+// Allow custom specification of Cineast OpenAPI config via -PapiConfigPath=...
+def apiConfigPath = project.properties["apiConfigPath"] ?: "$rootDir/cineast.json"
 
+// Source/Target compatibility (currently used for source & target/JVM).
+def javaCompatibility = 11
 
-    implementation group: 'com.sparkjava', name: 'spark-core', version: '2.7.2'
-
-    ////// MongoDB
-    implementation group: 'org.mongodb', name: 'mongodb-driver', version: '3.8.2'
-
-    ////// CLI PARSING
-    implementation group: 'com.github.rvesse', name: 'airline', version: '2.5.0'
+// Project settings.
+group 'ch.unibas.dmi.dbis'
+version '2.0.0-SNAPSHOT'
 
-    ////// LOGGING
-    implementation group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.+'
-    implementation group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.+'
+// Main class.
+mainClassName = 'ch.unibas.dmi.dbis.vrem.VREMKt'
 
+// Java properties.
+java {
+    sourceCompatibility = javaCompatibility
+    targetCompatibility = javaCompatibility
+}
 
-    testImplementation group: 'junit', name: 'junit', version: '4.12'
+// Application properties.
+application {
+    applicationDefaultJvmArgs = ["-Xms2G", "-Xmx4G"]
 }
 
+// Add generated code to sources.
+sourceSets {
+    main {
+        java {
+            srcDirs += "$buildDir/generated/src/main/kotlin/"
+        }
+    }
+}
 
+// Jar properties.
 jar {
     manifest {
-        attributes "Version": "$version"
-        attributes "Manifest-Version": "1.0"
-        attributes 'Main-Class': 'ch.unibas.dmi.dbis.vrem.VREM'
+        attributes 'Version': archiveVersion.get()
+        attributes 'Main-Class': mainClassName // Same as for the application plugin.
+        attributes 'Manifest-Version': '1.0'
+        attributes 'Multi-Release': true
     }
 
+    // Gradle 7.0 requires a duplicate handling strategy or fails if duplicates occur.
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+
     from {
         configurations.compileClasspath.collect { it.isDirectory() ? it : zipTree(it) }
         configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
     }
 }
 
+// Generate Cineast OpenAPI bindings.
+task generateOpenApi(type: org.openapitools.generator.gradle.plugin.tasks.GenerateTask) {
+    generatorName = 'kotlin'
+    inputSpec = apiConfigPath
+    packageName = "ch.unibas.dmi.dbis.vrem.cineast.client"
+    outputDir = "$buildDir/generated"
+
+    skipValidateSpec = true
+
+    configOptions = [
+            enumPropertyNaming: "UPPERCASE"
+    ]
+}
+
 task copyResources {
     doLast {
         copy {
@@ -55,4 +81,71 @@ task copyResources {
     }
 }
 
-task deploy(dependsOn: [build, jar, copyResources])
+task deploy {
+    dependsOn generateOpenApi, build, copyResources
+}
+
+// Regenerate OpenAPI code before building.
+compileKotlin {
+    mustRunAfter generateOpenApi
+    dependsOn generateOpenApi
+    kotlinOptions.jvmTarget = javaCompatibility
+}
+
+compileTestKotlin {
+    mustRunAfter generateOpenApi
+    dependsOn generateOpenApi
+    kotlinOptions.jvmTarget = javaCompatibility
+}
+
+// Regenerate OpenAPI code upon cleaning.
+clean {
+    finalizedBy generateOpenApi
+}
+
+// IntelliJ properties.
+idea {
+    module {
+        // IntelliJ should download Javadoc.
+        downloadJavadoc = true
+
+        // Exclude directories from IntelliJ (indexing etc.).
+        excludeDirs += file("data")
+        excludeDirs += file("logs")
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    // CLI.
+    implementation group: 'com.github.ajalt', name: 'clikt', version: "$cliktVersion"
+
+    // Kotlinx Serialization.
+    implementation group: 'org.jetbrains.kotlinx', name: 'kotlinx-serialization-json', version: "$kotlinxSerializationVersion"
+
+    // KMongo.
+    implementation group: 'org.litote.kmongo', name: 'kmongo-serialization', version: "$kmongoVersion"
+    implementation group: 'org.litote.kmongo', name: 'kmongo-id-serialization', version: "$kmongoVersion"
+
+    // Javalin.
+    implementation group: 'io.javalin', name: 'javalin', version: "$javalinVersion"
+
+    // Fuel.
+    implementation group: 'com.github.kittinunf.fuel', name: 'fuel', version: "$fuelVersion"
+    implementation group: 'com.github.kittinunf.fuel', name: 'fuel-kotlinx-serialization', version: "$fuelVersion"
+
+    // OpenAPI Dependencies (OkHttp3 and Moshi Serialization).
+    implementation group: 'com.squareup.okhttp3', name: 'okhttp', version: "$okhttpVersion"
+    implementation group: 'com.squareup.moshi', name: 'moshi-kotlin', version: "$moshiVersion"
+
+    // Logging.
+    implementation group: 'org.apache.logging.log4j', name: 'log4j-slf4j-impl', version: "$log4jslf4jVersion"
+    implementation group: 'io.github.microutils', name: 'kotlin-logging-jvm', version: "$kotlinLoggingVersion"
+
+    // Kotlin test & JUnit library.
+    testImplementation group: 'org.jetbrains.kotlin', name: 'kotlin-test', version: "$kotlinVersion"
+    testImplementation group: 'org.jetbrains.kotlin', name: 'kotlin-test-junit', version: "$kotlinVersion"
+}