import * as vscode from 'vscode';
import * as html from 'vscode-html-languageservice';
import * as lst from 'vscode-languageserver-types';
import { BladeFormatter, IBladeFormatterOptions } from "../services/BladeFormatter";

const service = html.getLanguageService()

export class BladeFormattingEditProvider implements vscode.DocumentFormattingEditProvider, vscode.DocumentRangeFormattingEditProvider 
{
    formatterOptions: IBladeFormatterOptions;
    
    provideDocumentFormattingEdits(document: vscode.TextDocument, options: vscode.FormattingOptions): vscode.TextEdit[] {
        let range = new vscode.Range(new vscode.Position(0, 0), new vscode.Position((document.lineCount - 1), Number.MAX_VALUE));
        return this.provideFormattingEdits(document, document.validateRange(range), options);
    }

    provideDocumentRangeFormattingEdits(document: vscode.TextDocument, range: vscode.Range, options: vscode.FormattingOptions): vscode.TextEdit[] {
        return this.provideFormattingEdits(document, range, options);
    }

    private provideFormattingEdits(document: vscode.TextDocument, range: vscode.Range, options: vscode.FormattingOptions): vscode.TextEdit[] {

        this.formatterOptions = {
            tabSize: options.tabSize,
            insertSpaces: options.insertSpaces
        };

        //  Mapping HTML format options
        let htmlFormatConfig = vscode.workspace.getConfiguration('html.format');
        Object.assign(options, htmlFormatConfig);

        // format as html
        let doc = lst.TextDocument.create(document.uri.fsPath, 'html', 1, document.getText());
        let htmlTextEdit = service.format(doc, range, options);

        // format as blade
        let formatter = new BladeFormatter(this.formatterOptions);
        let bladeText = formatter.format(htmlTextEdit[0].newText);

        return [vscode.TextEdit.replace(range, bladeText)];
    }
}