/*******************************************************************

    Module        : /assets/js/pole-display.js
    Desc.         : JS Class Tampil Data di Pole Display POS
    Created By    : Siau Pheng (siaupheng@3fonia.com).
    Created Date  : October 12th, 2025.
    Last Modified : November 1st, 2026.

    (c) 3FONIA Software; WWW.3FONIA.COM.

*******************************************************************/

class PoleDisplay {
    constructor(port, options = {}) {
        this.port = port;
        this.pole = '';
        this.options = Object.assign({
            rx: { start: '\x02', end: '\x0D', width: null },
            baudRate: 9600,
            dataBits: 8,
            stopBits: 1,
            parity: 'NONE',
            flowControl: 'NONE'
        }, options);
    }

    Open() {
        if (this.pole) return;

        qz.serial.openPort(this.port, this.options)
            .then(() => {
                this.pole = this.port;
                this.cd_Error(`${this.port} opened`);
                return qz.serial.sendData(this.pole, { type: 'HEX', data: 'x1Bx40' }, this.options);
            })
            .catch(this.cd_Error);
    }

    Close() {
        if (!this.pole) return;

        qz.serial.closePort(this.port)
            .then(() => {
                this.pole = '';
                this.cd_Error(`${this.port} closed`);
            })
            .catch(this.cd_Error);
    }

    Send(txt) {
        if (!this.pole) return false;

        // Convert string to ASCII hex format
        const asciiToHex = str => 
            Array.from(str, char => char.charCodeAt(0).toString(16).padStart(2, '0').toUpperCase())
                 .join('x');

        let textToSend = txt;
        if (Array.isArray(txt)) {
            textToSend = txt.map(ele => this.cd_Text(ele.t, ele.a)).join('');
        }

        const hexData = `x10C${asciiToHex(textToSend)}`;
        qz.serial.sendData(this.pole, { type: 'HEX', data: hexData }, this.options)
          .catch(this.cd_Error);
    }

    cd_Text(text, align = 'L') {
        const totWidth = 20;
        if (text.length >= totWidth) return text.substring(0, totWidth);

        const padding = totWidth - text.length;
        let lPadding = 0, rPadding = padding;

        if (align === 'C') {
            lPadding = Math.floor(padding / 2);
            rPadding = Math.ceil(padding / 2);
        } else if (align === 'R') {
            lPadding = padding;
            rPadding = 0;
        }

        return ' '.repeat(lPadding) + text + ' '.repeat(rPadding);
    }

    cd_Error(err) {
        console.error(err);
    }
}