feat: added cronjob system

Signed-off-by: limited_dev <loginakkisativ@gmail.com>

src/main/kotlin/net/moonleay/lilJudd/jobs/component/CronjobType.kt

@@ -0,0 +1,25 @@
+/*
+ * lilJudd
+ * Copyright (C) 2023 moonleay
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.moonleay.lilJudd.jobs.component
+
+enum class CronjobType {
+    INFINITE,
+    ONCE,
+    WHILE
+}

src/main/kotlin/net/moonleay/lilJudd/jobs/component/ICronjob.kt

@@ -0,0 +1,47 @@
+/*
+ * lilJudd
+ * Copyright (C) 2023 moonleay
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.moonleay.lilJudd.jobs.component
+
+import dev.inmo.krontab.KronScheduler
+import kotlinx.coroutines.Job
+
+interface ICronjob {
+    val jobName: String
+
+    /*  /--------------- Seconds
+        | /------------- Minutes
+        | | /----------- Hours
+        | | | /--------- Days of months
+        | | | | /------- Months
+        | | | | | /----- (optional) Year
+        | | | | | | /--- (optional) Timezone offset
+        | | | | | | |  / (optional) Week days
+        * * * * * * 0o *w
+    */
+
+    val jobIncoming: String
+    val jobType: CronjobType
+
+    val continueJob: Boolean
+
+    var cronjobJob: Job
+    var scheduler: KronScheduler
+    suspend fun jobFunction()
+
+}

src/main/kotlin/net/moonleay/lilJudd/jobs/component/JobManager.kt

@@ -0,0 +1,96 @@
+/*
+ * lilJudd
+ * Copyright (C) 2023 moonleay
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.moonleay.lilJudd.jobs.component
+
+import dev.inmo.krontab.buildSchedule
+import dev.inmo.krontab.doInfinityTz
+import dev.inmo.krontab.doOnceTz
+import dev.inmo.krontab.doWhileTz
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import net.moonleay.lilJudd.util.Logger
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+
+object JobManager {
+    private val jobs: MutableList<ICronjob> = mutableListOf()
+
+    // Add a cronjob and register it
+    fun addJob(job: ICronjob) {
+        if (jobs.contains(job)) {
+            killJob(job)
+        }
+        registerJob(job)
+        jobs.add(job)
+        Logger.out("Registered job \"${job.jobName}\" of type \"${job.javaClass.name}\".")
+    }
+
+    // Register a cronjob
+    private fun registerJob(job: ICronjob) {
+        Logger.out(
+            "INFO: Registering job \"${job.jobName}\"of type ${job.javaClass.name} at ${
+                LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))
+            }"
+        )
+        job.cronjobJob = CoroutineScope(Dispatchers.Default).launch {
+            job.scheduler = buildSchedule(job.jobIncoming)
+            Logger.out("Registered job \"${job.jobName}\"of type ${job.javaClass.name} to run at timer \"${job.jobIncoming}\".")
+            when (job.jobType) {
+                // Runs the job once at the specified time
+                CronjobType.ONCE -> {
+                    job.scheduler.doOnceTz {
+                        job.jobFunction()
+                    }
+                }
+                // Runs the job whiles the variable is set to true
+                CronjobType.WHILE -> {
+                    job.scheduler.doWhileTz {
+                        job.jobFunction()
+                        job.continueJob
+                    }
+                }
+                // Run this job until the programm stops
+                CronjobType.INFINITE -> {
+                    job.scheduler.doInfinityTz {
+                        job.jobFunction()
+                    }
+                }
+            }
+        }
+    }
+
+    // Kill all cronjobs
+    fun killAllJobs() {
+        for (j in jobs) {
+            killJob(j)
+        }
+    }
+
+    // Kill a cronjob
+    fun killJob(j: ICronjob) {
+        if (!jobs.contains(j)) {
+            Logger.out("This job does not exist.")
+            return
+        }
+        Logger.out("Killing job \"${j.jobName}\" of type ${j.javaClass.name}.")
+        j.cronjobJob.cancel()
+        jobs.remove(j)
+    }
+}