// Copyright (C) 2016 Wildfire Games.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

// Profiler2Report module
// Create one instance per profiler report you wish to open.
// This gives you the interface to access the raw and processed data

var Profiler2Report = function(callback, tryLive, file)
{
var outInterface = {};

// Item types returned by the engine
var ITEM_EVENT = 1;
var ITEM_ENTER = 2;
var ITEM_LEAVE = 3;
var ITEM_ATTRIBUTE = 4;

var g_used_colours = {};

var g_raw_data;
var g_data;

function refresh(callback, tryLive, file)
{
    if (tryLive)
        refresh_live(callback, file);
    else
        refresh_jsonp(callback, file);
}
outInterface.refresh = refresh;

function refresh_jsonp(callback, source)
{
    if (!source)
    {
        callback(false);
        return
    }
    var reader = new FileReader();
    reader.onload = function(e)
    {
        refresh_from_jsonp(callback, e.target.result);
    }
    reader.onerror = function(e) {
        alert("Failed to load report file");
        callback(false);
        return;
    }
    reader.readAsText(source);
}

function refresh_from_jsonp(callback, content)
{
    var script = document.createElement('script');

    window.profileDataCB = function(data)
    {
        script.parentNode.removeChild(script);

        var threads = [];
        data.threads.forEach(function(thread) {
            var canvas = $('<canvas width="1600" height="160"></canvas>');
            threads.push({'name': thread.name, 'data': { 'events': concat_events(thread.data) }, 'canvas': canvas.get(0)});
        });
        g_raw_data = { 'threads': threads };
        compute_data();
        callback(true);
    };

    script.innerHTML = content;
    document.body.appendChild(script);
}

function refresh_live(callback, file)
{
    $.ajax({
        url: 'http://127.0.0.1:8000/overview',
        dataType: 'json',
        success: function (data) {
            var threads = [];
            data.threads.forEach(function(thread) {
                threads.push({'name': thread.name});
            });
            var callback_data = { 'threads': threads, 'completed': 0 };

            threads.forEach(function(thread) {
                refresh_thread(callback, thread, callback_data);
            });
        },
        error: function (jqXHR, textStatus, errorThrown)
        {
            console.log('Failed to connect to server ("'+textStatus+'")');
            callback(false);
        }
    });
}

function refresh_thread(callback, thread, callback_data)
{
    $.ajax({
        url: 'http://127.0.0.1:8000/query',
        dataType: 'json',
        data: { 'thread': thread.name },
        success: function (data) {
            data.events = concat_events(data);
            thread.data = data;

            if (++callback_data.completed == callback_data.threads.length)
            {
                g_raw_data = { 'threads': callback_data.threads };
                compute_data();
                callback(true);
            }
        },
        error: function (jqXHR, textStatus, errorThrown) {
            alert('Failed to connect to server ("'+textStatus+'")');
        }
    });
}

function compute_data(range)
{
    g_data = { "threads" : [] };
    g_data_by_frame = { "threads" : [] };
    for (let thread = 0; thread < g_raw_data.threads.length; thread++)
    {
        let processed_data = process_raw_data(g_raw_data.threads[thread].data.events, range );
        if (!processed_data.intervals.length && !processed_data.events.length)
            continue;

        g_data.threads[thread] = processed_data;

        g_data.threads[thread].intervals_by_type_frame = {};

        if (!g_data.threads[thread].frames.length)
            continue
        // compute intervals by types and frames if there are frames.
        for (let type in g_data.threads[thread].intervals_by_type)
        {
            let current_frame = 0;
            g_data.threads[thread].intervals_by_type_frame[type] = [[]];
            for (let i = 0; i < g_data.threads[thread].intervals_by_type[type].length;i++)
            {
                let event = g_data.threads[thread].intervals[g_data.threads[thread].intervals_by_type[type][i]];
                while (current_frame < g_data.threads[thread].frames.length && event.t0 > g_data.threads[thread].frames[current_frame].t1)
                {
                    g_data.threads[thread].intervals_by_type_frame[type].push([]);
                    current_frame++;
                }
                if (current_frame < g_data.threads[thread].frames.length)
                    g_data.threads[thread].intervals_by_type_frame[type][current_frame].push(g_data.threads[thread].intervals_by_type[type][i]);
            }
        }
    };
}

function process_raw_data(data, range)
{
    if (!data.length)
        return { 'frames': [], 'events': [], 'intervals': [], 'intervals_by_type' : {}, 'tmin': 0, 'tmax': 0 };

    var start, end;
    var tmin, tmax;

    var frames = [];
    var last_frame_time_start = undefined;
    var last_frame_time_end = undefined;

    var stack = [];
    for (var i = 0; i < data.length; ++i)
    {
        if (data[i][0] == ITEM_EVENT && data[i][2] == '__framestart')
        {
            if (last_frame_time_end)
                frames.push({'t0': last_frame_time_start, 't1': last_frame_time_end});
            last_frame_time_start = data[i][1];
        }
        if (data[i][0] == ITEM_ENTER)
            stack.push(data[i][2]);
        if (data[i][0] == ITEM_LEAVE)
        {
            if (stack[stack.length-1] == 'frame')
                last_frame_time_end = data[i][1];
            stack.pop();
        }
    }
    if(!range)
    {
        range = { "tmin" : data[0][1], "tmax" : data[data.length-1][1] };
    }
    if (range.numframes)
    {
        for (var i = data.length - 1; i > 0; --i)
        {
            if (data[i][0] == ITEM_EVENT && data[i][2] == '__framestart')
            {
                end = i;
                break;
            }
        }

        var framesfound = 0;
        for (var i = end - 1; i > 0; --i)
        {
            if (data[i][0] == ITEM_EVENT && data[i][2] == '__framestart')
            {
                start = i;
                if (++framesfound == range.numframes)
                    break;
            }
        }

        tmin = data[start][1];
        tmax = data[end][1];
    }
    else if (range.seconds)
    {
        var end = data.length - 1;
        for (var i = end; i > 0; --i)
        {
            var type = data[i][0];
            if (type == ITEM_EVENT || type == ITEM_ENTER || type == ITEM_LEAVE)
            {
                tmax = data[i][1];
                break;
            }
        }
        tmin = tmax - range.seconds;

        for (var i = end; i > 0; --i)
        {
            var type = data[i][0];
            if ((type == ITEM_EVENT || type == ITEM_ENTER || type == ITEM_LEAVE) && data[i][1] < tmin)
                break;
            start = i;
        }
    }
    else
    {
        start = 0;
        end = data.length - 1;
        tmin = range.tmin;
        tmax = range.tmax;

        for (var i = data.length-1; i > 0; --i)
        {
            var type = data[i][0];
            if ((type == ITEM_EVENT || type == ITEM_ENTER || type == ITEM_LEAVE) && data[i][1] < tmax)
            {
                end = i;
                break;
            }
        }

        for (var i = end; i > 0; --i)
        {
            var type = data[i][0];
            if ((type == ITEM_EVENT || type == ITEM_ENTER || type == ITEM_LEAVE) && data[i][1] < tmin)
                break;
            start = i;
        }

        // Move the start/end outwards by another frame, so we don't lose data at the edges
        while (start > 0)
        {
            --start;
            if (data[start][0] == ITEM_EVENT && data[start][2] == '__framestart')
                break;
        }
        while (end < data.length-1)
        {
            ++end;
            if (data[end][0] == ITEM_EVENT && data[end][2] == '__framestart')
                break;
        }
    }

    var num_colours = 0;

    var events = [];

    // Read events for the entire data period (not just start..end)
    var lastWasEvent = false;
    for (var i = 0; i < data.length; ++i)
    {
        if (data[i][0] == ITEM_EVENT)
        {
            events.push({'t': data[i][1], 'id': data[i][2]});
            lastWasEvent = true;
        }
        else if (data[i][0] == ITEM_ATTRIBUTE)
        {
            if (lastWasEvent)
            {
                if (!events[events.length-1].attrs)
                    events[events.length-1].attrs = [];
                events[events.length-1].attrs.push(data[i][1]);
            }
        }
        else
        {
            lastWasEvent = false;
        }
    }


    var intervals = [];
    var intervals_by_type = {};

    // Read intervals from the focused data period (start..end)
    stack = [];
    var lastT = 0;
    var lastWasEvent = false;

    for (var i = start; i <= end; ++i)
    {
        if (data[i][0] == ITEM_EVENT)
        {
//            if (data[i][1] < lastT)
//                console.log('Time went backwards: ' + (data[i][1] - lastT));

            lastT = data[i][1];
            lastWasEvent = true;
        }
        else if (data[i][0] == ITEM_ENTER)
        {
//            if (data[i][1] < lastT)
//                console.log('Time - ENTER  went backwards: ' + (data[i][1] - lastT) + " - " + JSON.stringify(data[i]));

            stack.push({'t0': data[i][1], 'id': data[i][2]});

            lastT = data[i][1];
            lastWasEvent = false;
        }
        else if (data[i][0] == ITEM_LEAVE)
        {
//            if (data[i][1] < lastT)
//                console.log('Time - LEAVE  went backwards: ' + (data[i][1] - lastT) + " - " + JSON.stringify(data[i]));

            lastT = data[i][1];
            lastWasEvent = false;

            if (!stack.length)
                continue;

            var interval = stack.pop();

            if (!g_used_colours[interval.id])
                g_used_colours[interval.id] = new_colour(num_colours++);

            interval.colour = g_used_colours[interval.id];

            interval.t1 = data[i][1];
            interval.duration = interval.t1 - interval.t0;
            interval.depth = stack.length;
            //console.log(JSON.stringify(interval));
            intervals.push(interval);
            if (interval.id in intervals_by_type)
                intervals_by_type[interval.id].push(intervals.length-1);
            else
                intervals_by_type[interval.id] = [intervals.length-1];

            if (interval.id == "Script" && interval.attrs && interval.attrs.length)
            {
                let curT = interval.t0;
                for (let subItem in interval.attrs)
                {
                    let sub = interval.attrs[subItem];
                    if (sub.search("buffer") != -1)
                        continue;
                    let newInterv = {};
                    newInterv.t0 = curT;
                    newInterv.duration = +sub.replace(/.+? ([.0-9]+)us/, "$1")/1000000;
                    if (!newInterv.duration)
                        continue;
                    newInterv.t1 = curT + newInterv.duration;
                    curT += newInterv.duration;
                    newInterv.id = "Script:" + sub.replace(/(.+?) ([.0-9]+)us/, "$1");
                    newInterv.colour = g_used_colours[interval.id];
                    newInterv.depth = interval.depth+1;
                    intervals.push(newInterv);
                    if (newInterv.id in intervals_by_type)
                        intervals_by_type[newInterv.id].push(intervals.length-1);
                    else
                        intervals_by_type[newInterv.id] = [intervals.length-1];
               }
            }
        }
        else if (data[i][0] == ITEM_ATTRIBUTE)
        {
            if (!lastWasEvent && stack.length)
            {
                if (!stack[stack.length-1].attrs)
                    stack[stack.length-1].attrs = [];
                stack[stack.length-1].attrs.push(data[i][1]);
            }
        }
    }
    return { 'frames': frames, 'events': events, 'intervals': intervals, 'intervals_by_type' : intervals_by_type, 'tmin': tmin, 'tmax': tmax };
}

outInterface.data = function() { return g_data; };
outInterface.raw_data = function() { return g_raw_data; };
outInterface.data_by_frame = function() { return g_data_by_frame; };

refresh(callback, tryLive, file);

return outInterface;
};