//////////////////
/// Connection
//////////////////

var socket = io.connect({
    transports: ['websocket'],
    path: "/web/socket"
});
    
let first_camera_update = true

socket.on('connect', function() {
    console.log('Connected to server');

});

socket.on('disconnect', function() {
    console.log('Disconnected from server');
});

socket.on('timestamp', function(server_unix_time) {
    var diff = difftime(server_unix_time)
    $('[data-status=timestamp-diff]').text(diff)
    //console.log(diff)
});


//////////////////
/// Dome stream
//////////////////

socket.on("all-dome",function(e) {
    
    // Disable if not /ping:
    if (e["dome-ping"].raw !== true) {
        $("#Dome").addClass("pe-none").css({"opacity":"0.4"})
            .find('*')
            .attr('tabindex', '-1')
    } else {
        $("#Dome").removeClass("pe-none").css({"opacity": "1.0"})
            .find('*')
            .removeAttr('tabindex')
    }
    
    $.each(e, function(k,v){

        /// Depth 1
        var elem = $("[data-status="+k+"]")
        if (elem) {
            elem.text(v.response)
        }

        /// Depth 2
        if (k == "dome-position") {
            $("[data-status="+k+"-azimuth]").text(e[k].response.azimuth)
            $("[data-status="+k+"-parked]").text(e[k].response.parked)
        }

        // pulse(elem)

    });

});

////////////////////
/// Telescope stream
////////////////////

socket.on("all-telescope",function(e) {

    // Disable if not /ping:
    if (e["telescope-ping"].raw !== true) {
        $("#Telescope").addClass("pe-none").css({"opacity":"0.4"})
            .find('*')
            .attr('tabindex', '-1')        
    } else {
        $("#Telescope").removeClass("pe-none").css({"opacity": "1.0"})
            .find('*')
            .removeAttr('tabindex')
    }
    
    $.each(e, function(k,v){
        var elem = $("[data-status="+k+"]")

        /// Depth 1
        if (elem) {
            //console.log(k)
            elem.text(v.response)
        }

        /// Depth 2
        if (k == "telescope-coordinates") {
            $("[data-status="+k+"-ra]").text(e[k].response.radec[0])
            $("[data-status="+k+"-dec]").text(e[k].response.radec[1])
            $("[data-status="+k+"-alt]").text(e[k].response.altaz[0].toFixed(3))
            $("[data-status="+k+"-az]").text(e[k].response.altaz[1].toFixed(3))
            $("[data-status="+k+"-ha]").text(e[k].response.ha)
            $("[data-status="+k+"-lst]").text(e[k].response.lst)
        }

        if (k == "telescope-coordinates-offset") {
            $("[data-status="+k+"-zd]").text((e[k].response[0]*3600).toFixed(1))
            $("[data-status="+k+"-az]").text((e[k].response[1]*3600).toFixed(1))
        }

        // pulse(elem)

    })

});

//////////////////
/// Camera stream
//////////////////

socket.on("all-camera",function(e) {
    //console.log(e)

    // Disable if not /ping:
    if (e["camera-ping"].raw !== true) {
        $("#Camera").addClass("pe-none").css({"opacity":"0.4"})
            .find('*')
            .attr('tabindex', '-1')
    } else {
        $("#Camera").removeClass("pe-none").css({"opacity": "1.0"})
            .find('*')
            .removeAttr('tabindex')

        // Update the input fields with the real data, at first page load
        if (first_camera_update) {
            $('#filter').prop("value", e["camera-filter"].response)
            $("#binning").prop("value", e["camera-settings"].response.binning[0]) // [0,0]
            $('#x0').prop("value", e["camera-settings"].response.xystart[0])
            $('#y0').prop("value", e["camera-settings"].response.xystart[1])
            $('#xf').prop("value", e["camera-settings"].response.xyend[0])
            $('#yf').prop("value", e["camera-settings"].response.xyend[1])
            first_camera_update = false
        }
        
    }
    
    
    $.each(e, function(k,v){

        /// Depth 1
        var elem = $("[data-status="+k+"]")
        if (elem) {
            elem.text(v.response)
        }

        /// Depth 2 (settings)
        if (k == "camera-settings") {
            $.each(v.response, function(kk,vv){
                var elem = $("[data-status=camera-"+kk+"]")
                if (elem) {
                    elem.text(vv)
                }
            });                
        }
        
    });
    
});

/////////////////////
/// Sequencer stream
/////////////////////

socket.on("api-sequencer",function(e) {
    var res = e //JSON.parse(e.data)

    $.each(res.response, function(k,v){ /// sequencer has just 1 response
        var elem = $("[data-status=sequencer-"+k)
            if (elem) {
                elem.text(v)
            }
    });

    /// For the JS9 display
    var auto_display = $("#auto-display").prop("checked")
    if (auto_display) {
        if (typeof JS9 != "undefined") {
            JS9.Load("/static/temp.fits", {refresh:true, colormap:"heat"} )

        }
    }

    /// For the d3.js focus output
    var auto_output = $("#auto-output").prop("checked")
    if (auto_output) {
        if (res.response.output && res.response.output.focus) {
            const focus = res.response.output.focus
            const data = focus.m2.map((x, i) => ({ x, y: focus.fwhm[i] }));
            if (typeof chart1 != "undefined") {
                chart1.update(data);
            }
        }
    }

});

///////////////////////
/// Environment stream
///////////////////////

socket.on("api-environment", function(e) {
    var res = e //JSON.parse(e.data)
    // console.log(res)

    if (res && res.external) {
        $.each(res.external, function(k,v){
            var elem = $("[data-status=environment-external-"+k)
            if (elem) {
                elem.text(v)
            }
        });
    }

    if (res && res.internal) {
        $.each(res.internal, function(k,v){
            var elem = $("[data-status=environment-internal-"+k)
            if (elem) {
                elem.text(v)
            }
        });
    }

});

///////////////////////
/// Webcam stream
///////////////////////

socket.on("api-webcam", function(e) {
    const elem = $("[data-status=webcam-snapshot")
    //console.log(e)

    if (e) {
        const url = btoa(String.fromCharCode(...new Uint8Array(e)));
        elem.attr("src", 'data:image/jpeg;base64,' + url)
    } else {
        console.log("no image?")
    }

});


///////////////////////
/// Logfile stream
///////////////////////

var ansi_up = new AnsiUp;
socket.on("new_lines", function(lines) {

    var log_level_list = ["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"];
    var log_level = "";
    $.each(log_level_list, function(index, value) {
        //console.log(lines)
        if (lines.indexOf(value) !== -1) {
            log_level = value+'-level-line';
            return false;
        }
    });

    lines.forEach(function(line){

        $("#stream-output").prepend(
            '<div class="'+log_level+'">'+ansi_up.ansi_to_html(line)+'</div>'
        );
    })

});

///////////////////////
/// Pulse on changes
///////////////////////

function pulse(selector) {

    // var done = "bg-success"
    // var delay = 200

    selector.fadeTo('slow', 0.5, function() {
      selector.fadeTo('slow', 1.0) //.removeClass(done);
    });

    // setTimeout(function() {
    //   selector.removeClass(done);
    // }, delay);

}

$(document).ready(function(){
    // Select all elements with data-status attribute
    const elements = document.querySelectorAll('[data-status]');

    // Object to store previous text content of each element
    const previousTextContent = {};

    // Function to monitor text changes
    function observeChanges(element) {
        const observer = new MutationObserver(mutationsList => {
            for (let mutation of mutationsList) {
                if (mutation.type === 'childList') {
                    const previousText = previousTextContent[element.getAttribute('data-status')];
                    const currentText = element.textContent.trim();
                    if (previousText !== currentText) {
                        pulse($(element))
                        previousTextContent[element.getAttribute('data-status')] = currentText;
                    }
                }
    }
        });

        observer.observe(element, { subtree: true, childList: true });
    }

    // Apply observeChanges function to each element
    elements.forEach(element => {
        previousTextContent[element.getAttribute('data-status')] = element.textContent.trim();
        observeChanges(element);
    });

});