DRB-Client/op25Handler/modules/op25ConfigGenerators.mjs

import { promises as fs } from 'fs';

class OP25ConfigObject {
    constructor() { }

    async exportToFile(filename) {
        try {
            const jsonConfig = JSON.stringify(this, null, 2);
            await fs.writeFile(filename, jsonConfig);
            console.log(`Config exported to ${filename}`);
        } catch (error) {
            console.error(`Error exporting config to ${filename}: ${error}`);
        }
    }
}

export class P25ConfigGenerator extends OP25ConfigObject {
    constructor({ systemName, controlChannels, tagsFile, whitelistFile = undefined }) {
        super();
        console.log("Generating P25 Config for:", systemName);
        const controlChannelsString = controlChannels.join(',');
        this.channels = [new channelConfig({
            "channelName": systemName,
            "systemName": systemName,
            "enableAnalog": "off",
            "demodType": "cqpsk",
            "cqpskTracking": true,
            "filterType": "rc"
        })];
        this.devices = [new deviceConfig({
            "gain": "LNA:36"
        })];
        this.trunking = new trunkingConfig({
            "module": "tk_p25.py",
            "systemName": systemName,
            "controlChannelsString": controlChannelsString,
            "tagsFile": tagsFile,
            "whitelist": whitelistFile
        });
        this.audio = new audioConfig({});
        this.terminal = new terminalConfig({});
    }
}

export class NBFMConfigGenerator extends OP25ConfigObject {
    constructor({ systemName, frequency, nbfmSquelch = -70 }) {
        super();
        this.channels = new channelConfig({
            "channelName": systemName,
            "enableAnalog": "on",
            "nbfmSquelch": nbfmSquelch,
            "frequency": frequency,
            "demodType": "fsk4",
            "filterType": "widepulse"
        });
        this.devices = new deviceConfig({
            "gain": "LNA:32"
        });
        this.audio = new audioConfig({});
        this.terminal = new terminalConfig({});
    }
}

class channelConfig {
    constructor({
        channelName = "Voice_ch1",
        device = "sdr0",
        systemName,
        metaStreamName,
        demodType, // cqpsk: P25; fsk4: everything else
        cqpskTracking,
        trackingThreshold = 120,
        trackingFeedback = 0.75,
        destination = "udp://127.0.0.1:23456",
        excess_bw = 0.2,
        filterType = "rc", // rc: P25; widepulse: analog
        ifRate = 24000,
        plot = "",
        symbolRate = 4800,
        enableAnalog, //[on, off, auto]
        nbfmDeviation = 4000, // only needed if analog is enabled
        nbfmSquelch = -50, // only needed if analog is enabled
        frequency, // only needed if analog is enabled
        blacklist,
        whitelist,
        cryptKeys
    }) {
        // Core Configs
        this.name = channelName;
        this.device = device;
        this.demod_type = demodType;
        this.destination = destination;
        this.excess_bw = excess_bw;
        this.filter_type = filterType;
        this.if_rate = ifRate;
        this.plot = plot;
        this.symbol_rate = symbolRate;
        this.enable_analog = enableAnalog;

        // P25 config
        if (!enableAnalog || enableAnalog === "off" || systemName) this.trunking_sysname = systemName;
        if (!enableAnalog || enableAnalog === "off" || systemName && metaStreamName) this.meta_stream_name = metaStreamName ?? "";
        if (!enableAnalog || enableAnalog === "off" || systemName) this.cqpsk_tracking = cqpskTracking;
        if (!enableAnalog || enableAnalog === "off" || systemName) this.tracking_threshold = trackingThreshold;
        if (!enableAnalog || enableAnalog === "off" || systemName) this.tracking_feedback = trackingFeedback;
        if (!enableAnalog || enableAnalog === "off" || systemName && blacklist) this.blacklist = blacklist ?? "";
        if (!enableAnalog || enableAnalog === "off" || systemName && whitelist) this.whitelist = whitelist ?? "";
        if (!enableAnalog || enableAnalog === "off" || systemName && cryptKeys) this.crypt_keys = cryptKeys ?? "";

        // Analog config
        if (enableAnalog === "on" || enableAnalog === "auto") this.nbfm_deviation = nbfmDeviation;
        if (enableAnalog === "on" || enableAnalog === "auto") this.nbfm_squelch = nbfmSquelch;
        if (enableAnalog === "on" || enableAnalog === "auto") this.frequency = frequency;
    }
}

class deviceConfig {
    constructor({ args = "rtl", gain = "LNA:32", gainMode = false, name = "sdr0", offset = 0, ppm = 0.0, sampleRate = 1920000, tunable = true }) {
        this.args = args
        this.gains = gain
        this.gain_mode = gainMode
        this.name = name
        this.offset = offset
        this.ppm = ppm
        this.rate = sampleRate
        this.usable_bw_pct = 0.85
        this.tunable = tunable
    }
}

class trunkingConfig {
    /**
     * 
     * @param {object} *  
     */
    constructor({ module, systemName, controlChannelsString, tagsFile = "", nac = "0x0", wacn = "0x0", cryptBehavior = 2, whitelist = "", blacklist = "" }) {
        this.module = module;
        this.chans = [{
            "nac": nac,
            "wacn": wacn,
            "sysname": systemName,
            "control_channel_list": controlChannelsString,
            "whitelist": whitelist,
            "blacklist": blacklist,
            "tgid_tags_file": tagsFile,
            "tdma_cc": false,
            "crypt_behavior": cryptBehavior
        }];
    }
}

class audioConfig {
    constructor({ module = "sockaudio.py", port = 23456, deviceName = "default" }) {
        this.module = module;
        this.instances = [{
            "instance_name": "audio0",
            "device_name": deviceName,
            "udp_port": port,
            "audio_gain": 2.0,
            "number_channels": 1
        }];
    }
}

class metadataStreamConfig {
    constructor({ }) {
        this.module = "";
        this.streams = [];
    }
}

class terminalConfig {
    constructor({ module = "terminal.py", terminalType = "http:0.0.0.0:8081" }) {
        this.module = module;
        this.terminal_type = terminalType;
        this.curses_plot_interval = 0.1;
        this.http_plot_interval = 1.0;
        this.http_plot_directory = "../www/images";
        this.tuning_step_large = 1200;
        this.tuning_step_small = 100;
    }
}