/*
 * Minecraft Development for IntelliJ
 *
 * https://mcdev.io/
 *
 * Copyright (C) 2026 minecraft-dev
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, version 3.0 only.
 *
 * 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 Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
package com.demonwav.mcdev.platform.mixin.completion
 
import com.demonwav.mcdev.platform.mixin.reference.MethodReference
import com.demonwav.mcdev.util.reference.findContextElement
import com.intellij.codeInsight.AutoPopupController
import com.intellij.codeInsight.editorActions.TypedHandlerDelegate
import com.intellij.lang.java.JavaLanguage
import com.intellij.openapi.editor.Editor
import com.intellij.openapi.project.Project
import com.intellij.psi.PsiFile
 
class MethodReferenceTypedHandlerDelegate : TypedHandlerDelegate() {
    private val specialChars = hashSetOf(' ', '(', ')', '/')
 
    override fun checkAutoPopup(charTyped: Char, project: Project, editor: Editor, file: PsiFile): Result {
        if (charTyped !in specialChars || !file.language.isKindOf(JavaLanguage.INSTANCE)) {
            return Result.CONTINUE
        }
        AutoPopupController.getInstance(project).scheduleAutoPopup(editor) {
            val offset = editor.caretModel.offset
            val element = it.findElementAt(offset)?.findContextElement()
            MethodReference.ELEMENT_PATTERN.accepts(element)
        }
        return Result.CONTINUE
    }
}