Added ability to set environment variables (#38)

Package.md

@@ -37,7 +37,7 @@ And thats it for getting the token.
 <dependency>
     <groupId>io.github.realyusufismail</groupId>
     <artifactId>jconfig</artifactId>
-    <version>1.0.7</version>
+    <version>1.0.9</version>
 </dependency>
 ```
 
@@ -46,11 +46,11 @@ And thats it for getting the token.
 ```groovy
 //kotlin
 dependencies {
-    implementation("io.github.realyusufismail:jconfig:1.0.7")
+    implementation("io.github.realyusufismail:jconfig:1.0.9")
 }
 
 //groovy
 dependencies {
-    implementation "io.github.realyusufismail:jconfig:1.0.7"
+    implementation "io.github.realyusufismail:jconfig:1.0.9"
 }
 ```

README.md

@@ -37,7 +37,7 @@ And thats it for getting the token.
 <dependency>
     <groupId>io.github.realyusufismail</groupId>
     <artifactId>jconfig</artifactId>
-    <version>1.0.8</version>
+    <version>1.0.9</version>
 </dependency>
 ```
 
@@ -46,12 +46,12 @@ And thats it for getting the token.
 ```groovy
 //kotlin
 dependencies {
-   implementation("io.github.realyusufismail:jconfig:1.0.8")
+   implementation("io.github.realyusufismail:jconfig:1.0.9")
 }
 
 //groovy
 dependencies {
-   implementation "io.github.realyusufismail:jconfig:1.0.8"
+   implementation "io.github.realyusufismail:jconfig:1.0.9"
 }
 ```
 

build.gradle.kts

@@ -42,7 +42,7 @@ repositories { mavenCentral() }
 
 dependencies {
     // json
-    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.14.0")
+    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.15.1")
     testImplementation(kotlin("test"))
 }
 

gradle.properties

@@ -1,2 +1,2 @@
 kotlin.code.style=official
-version = 1.0.9-SNAPSHOT
+version = 1.0.9

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=4159b938ec734a8388ce03f52aa8f3c7ed0d31f5438622545de4f83a89b79788
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
 networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

src/main/kotlin/io/github/realyusufismail/jconfig/JConfig.kt

@@ -22,15 +22,22 @@ import io.github.realyusufismail.jconfig.classes.JConfigBuilder
 import io.github.realyusufismail.jconfig.classes.JConfigException
 import io.github.realyusufismail.jconfig.classes.JsonEntry
 
-/** Used to get a value from the config.json file. Also creates a new JConfig instance. */
+/** Gets a value from the config.json file. Also creates a new JConfig instance. */
 interface JConfig {
     /**
-     * Used to get all the entries in the config file.
+     * Gets all the entries in the config file.
      *
      * @return A list of all the entries in the config file.
      */
     val entries: Set<JsonEntry>
 
+    /**
+     * Gets a set of JConfigObject with there associated keys.
+     *
+     * @return A set of JConfigObject with there associated keys.
+     */
+    val values: Set<Map.Entry<String, JConfigObject>>
+
     /**
      * Gets the value of the key from the config file.
      *

src/main/kotlin/io/github/realyusufismail/jconfig/JConfigObject.kt

@@ -135,4 +135,11 @@ interface JConfigObject {
      * @return The value as a [JsonEntry].
      */
     val asJsonEntry: JsonEntry
+
+    /**
+     * Parses the value as a String.
+     *
+     * @return The value as a String.
+     */
+    val parseAsString: String
 }

src/main/kotlin/io/github/realyusufismail/jconfig/classes/JConfigBuilder.kt

@@ -28,6 +28,7 @@ class JConfigBuilder {
     private var extension = ".json"
     private var filename = "config$extension"
     private var directoryPath = "./"
+    private var environmentVariable = false
 
     fun setFilename(filename: String): JConfigBuilder {
         this.filename = filename + extension
@@ -44,6 +45,11 @@ class JConfigBuilder {
         return this
     }
 
+    fun enableEnvironmentVariable(): JConfigBuilder {
+        this.environmentVariable = true
+        return this
+    }
+
     @Throws(JConfigException::class)
     fun build(): JConfig {
         val mapper = ObjectMapper()
@@ -73,7 +79,15 @@ class JConfigBuilder {
                 entries.add(JsonEntry(key, value))
             }
 
-            JConfigImpl(entries)
+            val config = JConfigImpl(entries)
+
+            if (environmentVariable) {
+                config.values.forEach { (key, value) ->
+                    System.setProperty(key, value.parseAsString)
+                }
+            }
+
+            config
         } catch (e: IOException) {
             throw JConfigException("Could not read the config file.", e)
         }

src/main/kotlin/io/github/realyusufismail/jconfig/classes/JConfigImpl.kt

@@ -27,14 +27,26 @@ class JConfigImpl(entries: List<JsonEntry>) : JConfig {
     private var mapEntries: Map<String, Any> = HashMap()
     private var jsonEntries: Set<JsonEntry> = HashSet()
 
+
     init {
         this.mapEntries = JsonEntry.toMap(entries)
         jsonEntries = this.mapEntries.map { JsonEntry(it.key, it.value) }.toSet()
+
     }
 
     override val entries: Set<JsonEntry>
         get() = jsonEntries
 
+    override val values: Set<Map.Entry<String, JConfigObject>>
+        get() {
+            val map = HashMap<String, JConfigObject>()
+            for (entry in jsonEntries) {
+                map[entry.key] = get(entry.key)!!
+            }
+            return map.entries
+        }
+
+
     override fun get(key: String): JConfigObject? {
         // mapEntries[key] ?: throw NoSuchElementException("No value present for key: $key")
 

src/main/kotlin/io/github/realyusufismail/jconfig/classes/JConfigObjectImpl.kt

@@ -171,4 +171,16 @@ class JConfigObjectImpl(private val value: Any) : JConfigObject {
 
     override val asJsonEntry: JsonEntry
         get() = value as JsonEntry
+
+
+    override val parseAsString: String
+        get() = when (value) {
+            is String -> value
+            is Number -> value.toString()
+            is Boolean -> value.toString()
+            is Char -> value.toString()
+            is JsonEntry -> value.toString()
+            else -> throw ClassCastException("Cannot cast $value to String")
+        }
+
 }