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import path from 'node:path';

import Semver from 'semver';

import {CacheKey, CompilationResult} from '../../types/compilation/compilation.interfaces.js';
import {LLVMIrBackendOptions} from '../../types/compilation/ir.interfaces.js';
import type {PreliminaryCompilerInfo} from '../../types/compiler.interfaces.js';
import {ExecutableExecutionOptions} from '../../types/execution/execution.interfaces.js';
import type {ParseFiltersAndOutputOptions} from '../../types/features/filters.interfaces.js';
import {BaseCompiler} from '../base-compiler.js';
import {CompilationEnvironment} from '../compilation-env.js';
import {asSafeVer, changeExtension} from '../utils.js';
import {TypeScriptNativeParser} from './argument-parsers.js';

export class TypeScriptNativeCompiler extends BaseCompiler {
    static get key() {
        return 'typescript';
    }

    tscJit: string;
    tscSharedLib: string;
    tscNewOutput: boolean;
    tscAsmOutput: boolean;

    constructor(compilerInfo: PreliminaryCompilerInfo, env: CompilationEnvironment) {
        super(compilerInfo, env);

        this.tscJit = this.compiler.exe;
        this.tscSharedLib = this.compilerProps<string>(`compiler.${this.compiler.id}.sharedlibs`);
        this.tscNewOutput = Semver.gt(asSafeVer(this.compiler.semver || '0.0.0'), '0.0.32', true);
        this.tscAsmOutput = Semver.gt(asSafeVer(this.compiler.semver || '0.0.0'), '0.0.34', true);

        this.compiler.irArg = ['--emit=llvm'];
        this.compiler.supportsIntel = this.tscAsmOutput;
        this.compiler.supportsIrView = true;
    }

    override getSharedLibraryPathsAsArguments() {
        return [];
    }

    override optionsForFilter(
        filters: ParseFiltersAndOutputOptions,
        outputFilename: string,
        userOptions?: string[],
    ): string[] {
        return [];
    }

    override optionsForBackend(backendOptions: Record<string, any>, outputFilename: string): string[] {
        const addOpts: string[] = [];

        addOpts.push(this.tscAsmOutput ? '--emit=asm' : '--emit=mlir');

        if (!this.tscSharedLib) {
            addOpts.push('-nogc');
        }

        if (this.tscNewOutput) {
            addOpts.push('-o=' + this.filename(outputFilename));
        }

        return addOpts;
    }

    override getIrOutputFilename(inputFilename: string, filters: ParseFiltersAndOutputOptions): string {
        const outputFilename = this.getOutputFilename(path.dirname(inputFilename), this.outputFilebase);
        // As per #4054, if we are asked for binary mode, the output will be in the .s file, no .ll will be emited
        if (!filters.binary) {
            return changeExtension(outputFilename, '.ll');
        }
        return outputFilename;
    }

    override async generateIR(
        inputFilename: string,
        options: string[],
        irOptions: LLVMIrBackendOptions,
        produceCfg: boolean,
        filters: ParseFiltersAndOutputOptions,
    ) {
        const newOptions = options.filter(e => !e.startsWith('--emit=') && !e.startsWith('-o='));
        if (this.tscNewOutput) {
            newOptions.push('-o=' + this.getIrOutputFilename(inputFilename, filters));
        }

        return await super.generateIR(inputFilename, newOptions, irOptions, produceCfg, filters);
    }

    override async processIrOutput(
        output: CompilationResult,
        irOptions: LLVMIrBackendOptions,
        filters: ParseFiltersAndOutputOptions,
    ) {
        if (this.tscNewOutput) {
            return await super.processIrOutput(output, irOptions, filters);
        }

        return this.llvmIr.process(output.stderr.map(l => l.text).join('\n'), irOptions);
    }

    override async handleInterpreting(key: CacheKey, executeParameters: ExecutableExecutionOptions) {
        executeParameters.args = [
            '--emit=jit',
            this.tscSharedLib ? '--shared-libs=' + this.tscSharedLib : '-nogc',
            ...executeParameters.args,
        ];

        return await super.handleInterpreting(key, executeParameters);
    }

    override isCfgCompiler() {
        return true;
    }

    override getArgumentParserClass() {
        return TypeScriptNativeParser;
    }
}
