// Copyright (c) 2024, Compiler Explorer Authors
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import path from 'node:path';

import type {ExecutionOptions} from '../../types/compilation/compilation.interfaces.js';
import type {ParseFiltersAndOutputOptions} from '../../types/features/filters.interfaces.js';
import {BaseCompiler} from '../base-compiler.js';
import {logger} from '../logger.js';
import {SPIRVAsmParser} from '../parsers/asm-parser-spirv.js';
import * as utils from '../utils.js';
import {GlslangParser} from './argument-parsers.js';

export class GLSLCompiler extends BaseCompiler {
    protected disassemblerPath: string;

    static get key() {
        return 'glsl';
    }

    constructor(info: any, env: any) {
        super(info, env);

        this.asm = new SPIRVAsmParser(this.compilerProps);

        this.disassemblerPath = this.compilerProps<string>('disassemblerPath');
    }

    getPrimaryOutputFilename(dirPath: string, outputFilebase: string) {
        return path.join(dirPath, `${outputFilebase}.spv`);
    }

    override optionsForFilter(filters: ParseFiltersAndOutputOptions, outputFilename: string) {
        const sourceDir = path.dirname(outputFilename);
        const spvBinFilename = this.getPrimaryOutputFilename(sourceDir, this.outputFilebase);
        return ['-o', spvBinFilename, '-g']; // -g provides debug info
    }

    // TODO: Check this to see if it needs key (same in clspv)
    override getOutputFilename(dirPath: string, outputFilebase: string) {
        return path.join(dirPath, `${outputFilebase}.spvasm`);
    }

    override getArgumentParserClass() {
        return GlslangParser;
    }

    override async runCompiler(
        compiler: string,
        options: string[],
        inputFilename: string,
        execOptions: ExecutionOptions & {env: Record<string, string>},
    ) {
        const sourceDir = path.dirname(inputFilename);
        const spvBinFilename = this.getPrimaryOutputFilename(sourceDir, this.outputFilebase);

        if (!execOptions) {
            execOptions = this.getDefaultExecOptions();
        }
        execOptions.customCwd = path.dirname(inputFilename);

        const spvBin = await this.exec(compiler, options, execOptions);

        // glslang prefix things with 'ERROR:' which
        // applyParse_SourceWithLine doesn't detect the line number then.
        // For warnings, we need to adjust its position so parseSeverity works
        spvBin.stdout = spvBin.stdout.replaceAll('ERROR: ', '').replaceAll(/WARNING: (.+?:\d+:) /g, '$1 warning: ');
        const result = this.transformToCompilationResult(spvBin, inputFilename);

        if (spvBin.code !== 0 || !(await utils.fileExists(spvBinFilename))) {
            return result;
        }

        const spvasmFilename = this.getOutputFilename(sourceDir, this.outputFilebase);
        const disassemblerFlags = [spvBinFilename, '-o', spvasmFilename, '--comment'];

        const spvasmOutput = await this.exec(this.disassemblerPath, disassemblerFlags, execOptions);
        if (spvasmOutput.code !== 0) {
            logger.error('SPIR-V binary to text failed', spvasmOutput);
        }

        result.stdout = result.stdout.concat(utils.parseOutput(spvasmOutput.stdout));
        result.stderr = result.stderr.concat(utils.parseOutput(spvasmOutput.stderr));
        result.languageId = 'spirv';
        return result;
    }
}
