op-packages/luci-app-netspeedtest/htdocs/luci-static/resources/view/netspeedtest/logs.js

/*   Copyright (C) 2021-2026 sirpdboy herboy2008@gmail.com https://github.com/sirpdboy/luci-app-netspeedtest */
'use strict';
'require dom';
'require fs';
'require poll';
'require uci';
'require view';

var scrollPosition = 0;
var userScrolled = false;
var logTextarea;
var log_path;

uci.load('netspeedtest').then(function() {
    log_path = '/tmp/netspeedtest.log';
});

function pollLog() {
    return Promise.all([
        fs.read_direct(log_path, 'text').then(function(res) {
            return res.trim()
                .split(/\n/).join('\n')
                .replace(/\u001b\[33mWARN\u001b\[0m/g, '')
                .replace(/\u001b\[36mINFO\u001b\[0m/g, '')
                .replace(/\u001b\[31mERRO\u001b\[0m/g, '');
        }),
    ]).then(function(data) {
        logTextarea.value = data[0] || _('No log data.');

        if (!userScrolled) {
            logTextarea.scrollTop = logTextarea.scrollHeight;
        } else {
            logTextarea.scrollTop = scrollPosition;
        }
    });
}

return view.extend({
    handleCleanLogs: function() {
        return fs.write(log_path, '')
            .catch(function(e) { 
                ui.addNotification(null, E('p', e.message)) 
            });
    },

    render: function() {
        logTextarea = E('textarea', {
            'class': 'cbi-input-textarea',
            'wrap': 'off',
            'readonly': 'readonly',
            'style': 'width: calc(100% - 20px); height: 535px; margin: 10px; overflow-y: scroll;'
        });

        logTextarea.addEventListener('scroll', function() {
            userScrolled = true;
            scrollPosition = logTextarea.scrollTop;
        });

        var log_textarea_wrapper = E('div', { 'id': 'log_textarea' }, logTextarea);

        setTimeout(function() {
            poll.add(pollLog);
        }, 100);

        var clear_logs_button = E('input', {
            'class': 'btn cbi-button-action',
            'type': 'button',
            'style': 'margin-left: 20px; margin-top: 10px;',
            'value': _('Clear logs')
        });
        clear_logs_button.addEventListener('click', this.handleCleanLogs.bind(this));

        return E('div', { 'class': 'cbi-map' }, [
            E('div', { 'class': 'cbi-section' }, [
                clear_logs_button,
                log_textarea_wrapper,
                E('div', { 'style': 'text-align: right' }, [
                    E('small', {}, _('Refresh every %s seconds.').format(L.env.pollinterval))
                ]),
                E('div', { 'class': 'cbi-section-actions cbi-section-actions-right' })
            ])
        ]);
    },

    handleSaveApply: null,
    handleSave: null,
    handleReset: null
});