const {
    LoggingDebugSession,
    InitializedEvent,
    TerminatedEvent,
    OutputEvent
} = require('vscode-debugadapter');
const { spawn } = require('child_process');

class MyLuaDebugSession extends LoggingDebugSession {

    constructor() {
        super("myLuaDebug.txt");
        this.setDebuggerLinesStartAt1(true);
        this.setDebuggerColumnsStartAt1(true);
    }

    initializeRequest(response, args) {
        this.sendEvent(new InitializedEvent());
        this.sendResponse(response);
    }

    launchRequest(response, args) {
        const program = args.program;
        const cwd = args.cwd || process.cwd();

        this.process = spawn(program, [], {
            cwd: cwd,
            stdio: ['ignore', 'pipe', 'pipe']
        });

        this.process.stdout.on('data', data => {
            const text = data.toString();

            if (text.startsWith("@@DEBUG@@")) {
                const json = JSON.parse(text.substring(9));

                if (json.type === "luaError") {
                    const e = new OutputEvent(json.message + "\n", "stderr");
                    e.body.source = { path: json.file };
                    e.body.line = json.line;

                    this.sendEvent(e);
                }

                return;
            }

            // salida normal
            this.sendEvent(new OutputEvent(text, "stdout"));
        });

        this.process.stderr.on('data', data => {
            this.sendEvent(new OutputEvent(data.toString(), "stderr"));
        });

        this.process.on('exit', () => {
            this.sendEvent(new TerminatedEvent());
        });

        this.sendResponse(response);
    }

    setBreakPointsRequest(response, args) {
        const path = args.source.path;
        const bps = args.breakpoints.map(bp => bp.line);

        // Guardamos los breakpoints internamente
        this.breakpoints[path] = bps;

        // Enviar confirmación a VSCode
        response.body = {
            breakpoints: bps.map(line => ({ verified: true, line }))
        };

        this.sendResponse(response);
    }

}

new MyLuaDebugSession().start(process.stdin, process.stdout);