// Copyright (c) 2021, Compiler Explorer Authors
// All rights reserved.
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import type {UnprocessedExecResult} from '../../types/execution/execution.interfaces.js';
import * as exec from '../exec.js';

import type {FormatOptions} from './base.interfaces.js';
import {BaseFormatter} from './base.js';

export class RustFmtFormatter extends BaseFormatter {
    static get key() {
        return 'rustfmt';
    }

    override async format(source: string, options: FormatOptions): Promise<UnprocessedExecResult> {
        const args = [
            '--emit',
            'stdout',
            '--config',
            `hard_tabs=${options.useSpaces ? 'false' : 'true'}`,
            '--config',
            `tab_spaces=${options.tabWidth}`,
            // Force edition 2021 to support most modern syntax features
            '--edition',
            '2021',
        ];
        return await exec.execute(this.formatterInfo.exe, args, {input: source});
    }

    /**
     * Rust format only has one style.
     */
    override isValidStyle(style: string): boolean {
        return true;
    }
}