package com.itsaky.androidide.models;

import com.blankj.utilcode.util.ThrowableUtils;
import com.itsaky.androidide.utils.Logger;
import com.itsaky.lsp.CompletionItem;
import com.itsaky.lsp.CompletionItemKind;
import com.itsaky.lsp.Position;
import com.itsaky.lsp.TextEdit;
import io.github.rosemoe.editor.text.Cursor;
import io.github.rosemoe.editor.widget.CodeEditor;
import java.util.List;

public class CompletionItemWrapper implements SuggestItem, Comparable {
    
    private CompletionItem item;
    private String prefix;

    public CompletionItemWrapper(CompletionItem item, String prefix) {
        this.item = item;
        this.prefix = prefix;
    }
    
    public String getInsertText() {
        return item.insertText == null ? item.label : item.insertText;
    }
    
    @Override
    public String getName() {
        return item.label;
    }

    @Override
    public String getDescription() {
        return item.detail;
    }

    @Override
    public String getReturnType() {
        return CompletionItemKind.asString(item.kind);
    }

    @Override
    public char getTypeHeader() {
        return getReturnType().charAt(0);
    }

    @Override
    public String getSortText() {
        return item.kind + getName();
    }

    @Override
    public void onSelectThis(CodeEditor editor) {
        try {
            final Cursor cursor = editor.getCursor();
            if(cursor.isSelected()) return;
            final int length = getInsertLength();
            String text = getInsertText();
            final boolean shiftLeft = text.contains("$0");
            final boolean atEnd = text.endsWith("$0");
            text = text.replace("$0", "");
            editor.getText().delete(cursor.getLeftLine(), cursor.getLeftColumn() - length, cursor.getLeftLine(), cursor.getLeftColumn());
            cursor.onCommitText(text);
            
            if(shiftLeft && !atEnd)
                editor.moveSelectionLeft();
             
            final List<TextEdit> edits = item.additionalTextEdits;
            if(edits != null && edits.size() > 0) {
                for(int i=0;i<edits.size();i++) {
                    final TextEdit edit = edits.get(i);
                    if(edit == null || edit.range == null || edit.newText == null) continue;
                    final Position start = edit.range.start;
                    final Position end =  edit.range.end;
                    if(start == null || end == null) continue;
                    if(start.equals(end)) {
                        editor.getText().insert(start.line, start.character, edit.newText);
                    } else {
                        editor.getText().replace(start.line, start.character, end.line, end.character, edit.newText);
                    }
                }
            }
        } catch (Throwable th) {
            Logger.instance("CompletionItemWrapper").e("onSelectThis, Error: ", ThrowableUtils.getFullStackTrace(th));
        }
    }

    @Override
    public int compareTo(Object p1) {
        if(p1 instanceof CompletionItemWrapper) {
            CompletionItemWrapper that = (CompletionItemWrapper) p1;
            return this.getSortText().compareTo(that.getSortText());
        }
        return 1;
    }
    
    private int getInsertLength() {
        if (prefix.endsWith(".")) return 0;
        else if (prefix.contains(".")) return prefix.substring(prefix.lastIndexOf(".") + 1).length();
        else return prefix.length();
    }
}