add crontab guru action

Author: xepozz

src/main/kotlin/com/github/xepozz/crontab/ide/actions/CrontabScheduleAction.kt

@@ -0,0 +1,46 @@
+package com.github.xepozz.crontab.ide.actions
+
+import com.github.xepozz.crontab.language.CrontabFile
+import com.github.xepozz.crontab.language.psi.CrontabCronExpression
+import com.github.xepozz.crontab.language.psi.CrontabSchedule
+import com.intellij.ide.BrowserUtil
+import com.intellij.openapi.actionSystem.ActionUpdateThread
+import com.intellij.openapi.actionSystem.AnAction
+import com.intellij.openapi.actionSystem.AnActionEvent
+import com.intellij.openapi.actionSystem.CommonDataKeys
+import com.intellij.psi.PsiElement
+import com.intellij.psi.util.PsiTreeUtil
+
+class OpenCrontabGuruAction : AnAction() {
+    override fun actionPerformed(e: AnActionEvent) {
+        val editor = e.getData(CommonDataKeys.EDITOR) ?: return
+        val psiFile = e.getData(CommonDataKeys.PSI_FILE) as? CrontabFile ?: return
+        val psiElement = psiFile.findElementAt(editor.caretModel.offset) ?: return
+
+        val crontabSchedule = findCrontabSchedule(psiElement)
+
+        if (crontabSchedule != null) {
+            BrowserUtil.browse(
+                "https://crontab.guru/#" + crontabSchedule.text.split(Regex("[\\s\\t]+")).joinToString("_")
+            )
+        }
+    }
+
+    override fun update(e: AnActionEvent) {
+        val editor = e.getData(CommonDataKeys.EDITOR) ?: return
+        val psiFile = e.getData(CommonDataKeys.PSI_FILE) as? CrontabFile ?: return
+        val psiElement = psiFile.findElementAt(editor.caretModel.offset) ?: return
+
+        val crontabSchedule = findCrontabSchedule(psiElement)
+
+        e.presentation.isEnabledAndVisible = crontabSchedule != null
+    }
+
+    override fun getActionUpdateThread() = ActionUpdateThread.BGT
+
+    private fun findCrontabSchedule(psiElement: PsiElement): CrontabSchedule? =
+        PsiTreeUtil.collectParents(psiElement, CrontabSchedule::class.java, true)
+        { it is CrontabCronExpression }
+            .firstOrNull()
+
+}

src/main/resources/META-INF/plugin.xml

@@ -37,4 +37,13 @@
                 language="Crontab"
                 implementationClass="com.github.xepozz.crontab.ide.CrontabCommenter"/>
     </extensions>
+    <actions>
+        <action id="Crontab.OpenCrontabGuruAction" popup="false"
+                class="com.github.xepozz.crontab.ide.actions.OpenCrontabGuruAction"
+                text="Open in Crontab Guru"
+                description="Opens the schedule in the crontab.guru service"
+                icon="/icons/cron/pluginIcon.svg">
+            <add-to-group group-id="EditorPopupMenu" anchor="last"/>
+        </action>
+    </actions>
 </idea-plugin>