document.body.style.overflowY = "scroll";

if (location.hash && location.hash.length > 0) {
    var initialQuery = location.hash;
    if (initialQuery[0] == "#") {
        initialQuery = initialQuery.slice(1);
    }
    document.getElementById("query").value = decodeURIComponent(initialQuery);
}

var indexContainer = document.getElementById("cineraIndex");
var projectID = indexContainer.attributes.getNamedItem("data-project").value;
var theme = indexContainer.classList.item(0);
var baseURL = indexContainer.attributes.getNamedItem("data-baseURL").value;
var playerLocation = indexContainer.attributes.getNamedItem("data-playerLocation").value;

var indexSort = indexContainer.querySelector("#cineraIndexSort");
var indexEntries = indexContainer.querySelector("#cineraIndexEntries");
var indexSortChronological = true;

indexSort.addEventListener("click", function(ev) {
    if(indexSortChronological)
    {
        this.firstChild.nodeValue = "Sort: New to Old ⏷"
        indexEntries.style.flexFlow = "column-reverse";
    }
    else
    {
        this.firstChild.nodeValue = "Sort: Old to New ⏶"
        indexEntries.style.flexFlow = "column";
    }
    indexSortChronological = !indexSortChronological;
});

var lastQuery = null;
var resultsToRender = [];
var resultsIndex = 0;
var resultsMarkerIndex = -1;
var resultsContainer = document.getElementById("cineraResults");
var rendering = false;

var dayContainerPrototype = document.createElement("DIV");
dayContainerPrototype.classList.add("dayContainer");
dayContainerPrototype.classList.add(theme);

var dayNamePrototype = document.createElement("SPAN");
dayNamePrototype.classList.add("dayName");
dayContainerPrototype.appendChild(dayNamePrototype);

var markerListPrototype = document.createElement("DIV");
markerListPrototype.classList.add("markerList");
markerListPrototype.classList.add(theme);
dayContainerPrototype.appendChild(markerListPrototype);

var markerPrototype = document.createElement("A");
markerPrototype.classList.add("marker");
if(resultsContainer.getAttribute("data-single") == 0)
{
    markerPrototype.setAttribute("target", "_blank");
}

var highlightPrototype = document.createElement("B");

var episodes = [];

function getEpisodeName(filename) {
    var day = filename;
    var dayParts = day.match(/([a-zA-Z_-]+)([0-9]+)?([a-zA-Z]+)?/);
    day = dayParts[1].slice(0, 1).toUpperCase() + dayParts[1].slice(1) + (dayParts[2] ? " " + dayParts[2] : "") + (dayParts[3] ? " " + dayParts[3].toUpperCase() : "");
    return day;
}

function markerTime(totalTime) {
    var markTime = "(";
    var hours = Math.floor(totalTime / 60 / 60);
    var minutes = Math.floor(totalTime / 60) % 60;
    var seconds = totalTime % 60;
    if (hours > 0) {
        markTime += padTimeComponent(hours) + ":";
    }

    markTime += padTimeComponent(minutes) + ":" + padTimeComponent(seconds) + ")";

    return markTime;
}

function padTimeComponent(component) {
    return (component < 10 ? "0" + component : component);
}

var renderHandle;
function runSearch() {
    var queryStr = document.getElementById("query").value;
    if (lastQuery != queryStr) {
        var oldResultsContainer = resultsContainer;
        resultsContainer = oldResultsContainer.cloneNode(false);
        oldResultsContainer.parentNode.insertBefore(resultsContainer, oldResultsContainer);
        oldResultsContainer.remove();
        resultsIndex = 0;
        resultsMarkerIndex = -1;
    }
    lastQuery = queryStr;
    resultsToRender = [];
    var numEpisodes = 0;
    var numMarkers = 0;
    var totalSeconds = 0;
    if (queryStr && queryStr.length > 0) {
        indexContainer.style.display = "none";
        if (episodes.length > 0) {
            var query = new RegExp(queryStr.replace("(", "\\(").replace(")", "\\)").replace(/\|+/, "\|").replace(/\|$/, "").replace(/(^|[^\\])\\$/, "$1"), "gi");
            for (var i = 0; i < episodes.length; ++i) {
                var episode = episodes[i];
                var matches = [];
                for (var j = 0; j < episode.markers.length; ++j) {
                    query.lastIndex = 0;
                    var result = query.exec(episode.markers[j].text);
                    if (result && result[0].length > 0) {
                        numMarkers++;
                        matches.push(episode.markers[j]);
                        if (j < episode.markers.length-1) {
                            totalSeconds += episode.markers[j+1].totalTime - episode.markers[j].totalTime;
                        }
                    }
                }
                if (matches.length > 0) {
                    numEpisodes++;
                    resultsToRender.push({
                        query: query,
                        episode: episode,
                        matches: matches
                    });
                }
            }

            if (rendering) {
                clearTimeout(renderHandle);
            }
            renderResults();
        } else {
            document.querySelector(".spinner").classList.add("show");
        }
    }
    else
    {
        indexContainer.style.display = "block";
    }

    var totalTime = Math.floor(totalSeconds/60/60) + "h " + Math.floor(totalSeconds/60)%60 + "m " + totalSeconds%60 + "s ";

    document.getElementById("cineraResultsSummary").textContent = "Found: " + numEpisodes + " episodes, " + numMarkers + " markers, " + totalTime + "total.";
}

function renderResults() {
    if (resultsIndex < resultsToRender.length) {
        rendering = true;
        var maxItems = 42;
        var numItems = 0;
        while (numItems < maxItems && resultsIndex < resultsToRender.length) {
            var query = resultsToRender[resultsIndex].query;
            var episode = resultsToRender[resultsIndex].episode;
            var matches = resultsToRender[resultsIndex].matches;
            var markerList = null;
            if (resultsMarkerIndex == -1) {
                var dayContainer = dayContainerPrototype.cloneNode(true);
                var dayName = dayContainer.children[0];
                markerList = dayContainer.children[1];
                dayName.textContent = episode.day + ": " + episode.title;
                resultsContainer.appendChild(dayContainer);
                resultsMarkerIndex = 0;
                numItems++;
            } else {
                markerList = document.querySelector("#cineraResults > .dayContainer:nth-child(" + (resultsIndex+1) + ") .markerList");
            }
        
            while (numItems < maxItems && resultsMarkerIndex < matches.length) {
                var match = matches[resultsMarkerIndex];
                var marker = markerPrototype.cloneNode();
                var playerURLPrefix = (baseURL ? baseURL + "/" : "") + (playerLocation ? playerLocation + "/" : "");
                marker.setAttribute("href", playerURLPrefix + episode.filename.replace(/"/g, "") + "/#" + match.totalTime);
                query.lastIndex = 0;
                var cursor = 0;
                var text = match.text;
                var result = null;
                marker.appendChild(document.createTextNode(match.prettyTime + " "));
                while (result = query.exec(text)) {
                    if (result.index > cursor) {
                        marker.appendChild(document.createTextNode(text.slice(cursor, result.index)));
                    }
                    var highlightEl = highlightPrototype.cloneNode();
                    highlightEl.textContent = result[0];
                    marker.appendChild(highlightEl);
                    cursor = result.index + result[0].length;
                }
        
                if (cursor < text.length) {
                    marker.appendChild(document.createTextNode(text.slice(cursor, text.length)));
                }
                markerList.appendChild(marker);
                numItems++;
                resultsMarkerIndex++;
            }
        
            if (resultsMarkerIndex == matches.length) {
                resultsMarkerIndex = -1;
                resultsIndex++;
            }
        }
        renderHandle = setTimeout(renderResults, 0);
    } else {
        rendering = false;
    }
}

function IsVisible(el) {
    var xPos = 0;
    var yPos = 0;
    var Height = parseInt(getComputedStyle(el).height);

    while (el) {
        if (el.tagName == "BODY") {
            var xScroll = el.scrollLeft || document.documentElement.scrollLeft;
            var yScroll = el.scrollTop || document.documentElement.scrollTop;

            xPos += (el.offsetLeft - xScroll + el.clientLeft)
            yPos += (el.offsetTop - yScroll + el.clientTop)
        } else {
            xPos += (el.offsetLeft - el.scrollLeft + el.clientLeft);
            yPos += (el.offsetTop - el.scrollTop + el.clientTop);
        }

        el = el.offsetParent;
    }
    return ((xPos > 0 && xPos < window.innerWidth) && (yPos > 0 && yPos + Height < window.innerHeight));
}

var queryEl = document.getElementById("query");
if(document.hasFocus() && IsVisible(queryEl)) { queryEl.focus(); }
queryEl.addEventListener("input", function(ev) {
    history.replaceState(null, null, "#" + encodeURIComponent(queryEl.value));
    runSearch();
});

var xhr = new XMLHttpRequest();
xhr.addEventListener("load", function() {
    var contents = xhr.response;
    var lines = contents.split("\n");
    var mode = "none";
    var episode = null;
    for (var i = 0; i < lines.length; ++i) {
        var line = lines[i];
        if (line.trim().length == 0) { continue; }
        if (line == "---") {
            if (episode != null) {
                episode.filename = episode.name;
                episode.day = getEpisodeName(episode.filename + ".html.md");
                episodes.push(episode);
            }
            episode = {};
            mode = "none";
        } else if (line.startsWith("name:")) {
            episode.name = line.slice(6);
        } else if (line.startsWith("title:")) {
            episode.title = line.slice(7).trim().slice(1, -1);
        } else if (line.startsWith("markers")) {
            mode = "markers";
            episode.markers = [];
        } else if (mode == "markers") {
            var match = line.match(/"(\d+)": "(.+)"/);
            if (match == null) {
                console.log(name, line);
            } else {
                var totalTime = parseInt(line.slice(1));
                var marker = {
                    totalTime: totalTime,
                    prettyTime: markerTime(totalTime),
                    text: match[2].replace(/\\"/g, "\"")
                }
                episode.markers.push(marker);
            }
        }
    }
    document.querySelector(".spinner").classList.remove("show");
    runSearch();
});
xhr.addEventListener("error", function() {
    console.error("Failed to load content");
});

var indexLocation = (baseURL ? baseURL + "/" : "") + projectID + ".index";
xhr.open("GET", indexLocation);
xhr.setRequestHeader("Content-Type", "text/plain");
xhr.send();

runSearch();