<!DOCTYPE html>
<html lang="en-US">

<head>
    <title>Atmospheric Query and Retrieval Tool</title>
    <meta charset="UTF-8" />


    <script type="text/javascript" src="../jquery/jquery-latest.min.js"></script>
    <script type="text/javascript" src="../jquery/ui/1.10.1/jquery-ui.js"></script>
    <script type="text/javascript" src="../ndn-js/build/ndn.js"></script>


    <link rel="stylesheet" href="query.css">
    <link rel="stylesheet" href="../jquery/ui/1.11.4/themes/smoothness/jquery-ui.css">

    <script>
        // {@ @todo: this need to be configured before the document load
        var catalog = "/catalog/myUniqueName";
        var face = new Face({
            host: "localhost",
            port: 9696
        });

        // @}

        var searchMenuOptions = {}
        var results = [];
        var resultCount = 0;
        var page = 1;
        var totalPages = 1;
        var selectedSearch = {};
        var dropdown = [];

        $(document).ready(function () {
            var searchMenu = $(".cssmenu");
            var currentPage = $(".page");
            var resultTable = $(".resultTable");
            var data = $.getJSON("search_catagories.json", function () {}).done(function (data) {
                $.each(data, function (pageSection, contents) {
                    if (pageSection == "SearchCatagories") {
                        $.each(contents, function (search, searchOptions) {
                            search = search.replace(/\_/g, " ");

                            searchMenu.append('<li id="' + search + '" onclick="getDropDown(this.id)"><a href="#">' + search + '</a></li>');
                            searchMenuOptions[String(search)] = searchOptions;
                        });
                    }
                });
            });
        });

        function onData(data) {
            var payloadStr = data.content.toString().split("\n")[0];

            var queryResults = JSON.parse(payloadStr);

            var resultTable = $(".resultTable");
            $.each(queryResults, function (queryResult, field) {

                if (queryResult == "next") {
                    populateAutocomplete(field);
                }

                $.each(field, function (entryCount, name) {
                    results.push(name);
                });
            });

            // Calculating the current page and the view
            totalPages = Math.ceil(resultCount / 20);
            populateResults(0);
        }

        var state = {};

        function query(prefix, parameters, callback, pipeline) {
            results = [];
            dropdown = [];

            var resultTable = $(".resultTable");
            resultTable.empty();
            resultTable.append('<tr><td>Results</td></tr>');

            var queryPrefix = new Name(prefix);
            queryPrefix.append("query");

            queryPrefix.append(JSON.stringify(parameters));

            state = {
                prefix: new Name(prefix),
                userOnData: callback,
                outstanding: {},
                nextSegment: 0,
            };

            /*if (state.hasOwnProperty("version")) {
                console.log("state already has version");
            }*/

            var queryInterest = new Interest(queryPrefix);
            queryInterest.setInterestLifetimeMilliseconds(10000);

            face.expressInterest(queryInterest,
                onQueryData,
                onQueryTimeout);

            state["outstanding"][queryInterest.getName().toUri()] = 0;
        }

        function expressNextInterest() {
            // @todo pipelines
            var nextName = new Name(state["results"]);
            nextName.appendSegment(state["nextSegment"]);

            var nextInterest = new Interest(nextName);
            nextInterest.setInterestLifetimeMilliseconds(10000);

            face.expressInterest(nextInterest,
                onQueryResultsData,
                onQueryResultsTimeout);

            state["nextSegment"] ++;
            state["outstanding"][nextName.toUri()] = 0;
        }

        function onQueryData(interest, data) {
            var name = data.getName();

            delete state["outstanding"][interest.getName().toUri()];

            state["version"] = name.get(state["prefix"].size() + 2).toVersion();

            state["results"] = new Name(state["prefix"]).append("query-results").appendVersion(state["version"]);

            expressNextInterest();
        }

        function onQueryResultsData(interest, data) {
            var name = data.getName();
            delete state["outstanding"][interest.getName().toUri()];

            if (!name.get(-1).equals(new Name.Component("END"))) {
                expressNextInterest();
            } else {
                alert("found final block");
            }

            state["userOnData"](data);
        }

        function onQueryTimeout(interest) {
            var uri = interest.getName().toUri();
            if (state["outstanding"][uri] < 1) {
                state["outstanding"][uri] ++;
                face.expressInterest(interest,
                    onQueryData,
                    onQueryTimeout);
            } else {
                delete state["outstanding"][uri];

                // We modify the autocomplete box here because we need to know
                // we have all of the entries first. Fairly hacky.
                var autocompleteFullName = autocompleteText.value;
                for (var i = 0; i < dropdown.length; ++i) {
                    if (dropdown[i].substr(0, dropdown[i].length - 1).toUpperCase === autocompleteText.value.toUpperCase || dropdown.length == 1) {
                        autocompleteText.value = dropdown[i];
                    }
                }
            }
        }

        function onQueryResultsTimeout(interest) {
            var uri = interest.getName().toUri();
            if (state["outstanding"][uri] < 1) {
                state["outstanding"][uri] ++;
                face.expressInterest(interest,
                    onQueryResultsData,
                    onQueryResultsTimeout);
            } else {
                delete state["outstanding"][uri];
                // We modify the autocomplete box here because we need to know
                // we have all of the entries first. Fairly hacky.
                var autocompleteFullName = autocompleteText.value;
                for (var i = 0; i < dropdown.length; ++i) {
                    if (dropdown[i].substr(0, dropdown[i].length - 1).toUpperCase === autocompleteText.value.toUpperCase || dropdown.length == 1) {
                        autocompleteText.value = dropdown[i];
                    }
                }
            }
        }


        var currentViewIndex = 0;

        function populateResults(startIndex) {
            var resultTable = $(".resultTable");
            resultTable.empty();
            resultTable.append('<tr><td>Results</td></tr>');


            for (var i = startIndex; i < startIndex + 20 && i < results.length; ++i) {
                resultTable.append('<tr><td>' + results[i] + '</td></tr>');
            }

            if (results.length <= 20) {
                page = 1;
            } else {
                page = startIndex / 20 + 1;
            }

            totalPages = Math.ceil(results.length / 20);

            var currentPage = $(".page");
            currentPage.empty();
            if (page != 1) {
                currentPage.append('<a href="#" onclick="getPage(this.id);" id="<"><</a>');
            }
            // This section of code creates the paging for the results.
            // To prevent it from having a 1000+ pages, it will only show the 5 pages before/after
            // the current page and the total pages (expect users not to really jump around a lot).
            for (var i = 1; i <= totalPages; ++i) {
                if (i == 1 || i == totalPages     // Min or max
                    || (i <= page && i + 5 >= page)    // in our current page range
                    || (i >= page && i - 5 <= page)) { // in our current page range
                       if (i != page) {
                         currentPage.append(' <a href="#" onclick="getPage(' + i + ');">' + i + '</a>')
                         if (i == 1 && page > i + 5) {
                             currentPage.append(' ... ');
                         }
                       } else {
                           currentPage.append(' ' + i);
                       }
                } else { // Need to skip ahead
                    if (i == page + 6) {
                        currentPage.append(' ... ');

                        currentPage.append(' <a href="#" onclick="getPage(this.id);" id=">">></a>')
                        i = totalPages - 1;
                    }
                }
            }
            currentPage.append('  ' + results.length + ' results');
        }

        var dropState = "";

        function getDropDown(str) {
            var searchMenu = $(".cssmenu");
            if (str == dropState) {
                dropState = "";
                searchMenu.find("#" + str).find("#options_" + str).empty();
            } else {
                dropState = str;

                $.each(searchMenuOptions, function (search, fields) {
                    if (search === str) {
                        searchMenu.find("#" + search).append('<ul id="options_' + search + '" class="sub-menu">');
                        for (var i = 0; i < fields.length; ++i) {
                            searchMenu.find("#options_" + search).append('<li id="' + fields[i] + '"onclick="submitCatalogSearch(this.id)"><a href="#">' + fields[i] + '</a></li>');
                        }
                        searchMenu.append('</ul>');
                    } else {
                        var ul = $("options_" + search);
                        ul.empty();
                        searchMenu.find("#" + search).find("#options_" + search).empty();
                    }
                });
            }
        }

        function getPage(clickedPage) {
            console.log(clickedPage);

            var nextPage = clickedPage;
            if (clickedPage === "<") {
                nextPage = page - 5;
            } else if (clickedPage === ">") {
                console.log("> enabled");

                nextPage = page + 5;
            }

            nextPage--; // Need to adjust for starting at 0

            if (nextPage < 0 ) {
                nextPage = 0;
                console.log("0 enabled");
            } else if (nextPage > totalPages - 1) {
                nextPage = totalPages - 1;
                console.log("total enabled");
            }

            populateResults(nextPage * 20);
            return false;
        }

        function submitAutoComplete() {
            if (autocompleteText.value.length > 0) {
                var selection = autocompleteText.value;
                $.each(dropdown, function (i, dropdownEntry) {
                    if (dropdownEntry.substr(0, dropdownEntry.length - 1) == selection) {
                        selection = dropdownEntry;
                    }
                });

                selectedSearch["?"] = selection;
                query(catalog, selectedSearch, onData, 1);
                delete selectedSearch["?"];
            }
        }

        function submitCatalogSearch(field) {
            console.log("Sumbit Catalog Search: " + field);
            // @todo: this logic isn't quite right
            var remove = false;
            $.each(selectedSearch, function (search, f) {
                if (field == f) {
                    delete selectedSearch[field];
                    remove = true;
                }
            });
            if (!remove) {
                $.each(searchMenuOptions, function (search, fields) {
                    $.each(fields, function (index, f) {
                        if (f == field) {
                            selectedSearch[search] = field;
                        }
                    });
                });
            }
            query(catalog, selectedSearch, onData, 1);
            populateCurrentSelections();
            return false;
        }

        function populateAutocomplete(fields) {
            var isAutocompleteFullName = (autocompleteText.value.charAt(autocompleteText.value.length - 1) === "/");
            var autocompleteFullName = autocompleteText.value;
            for (var i = 0; i < fields.length; ++i) {
                var fieldFullName = fields[i];
                var entry = autocompleteFullName;
                var skipahead = "";

                if (isAutocompleteFullName) {
                    skipahead = fieldFullName.substr(autocompleteText.value.length, fieldFullName.length);
                } else {
                    if (fieldFullName.charAt(autocompleteText.value.length) === "/") {
                        entry += "/";
                        skipahead = fieldFullName.substr(autocompleteText.value.length + 1, fieldFullName.length);
                    } else {
                        skipahead = fieldFullName.substr(autocompleteText.value.length, fieldFullName.length);
                    }
                }
                if (skipahead.indexOf("/") != -1) {
                    entry += skipahead.substr(0, skipahead.indexOf("/") + 1);
                } else {
                    entry += skipahead;
                }

                var added = false;
                for (var j = 0; j < dropdown.length && !added; ++j) {
                    if (dropdown[j] === entry) {
                        added = true;
                    } else if (dropdown[j] > entry) {
                        dropdown.splice(j, 0, entry);
                        added = true;
                    }
                }
                if (!added) {
                    dropdown.push(entry);
                }

            }
            $("#autocompleteText").autocomplete({
                source: dropdown
            });
        }

        function populateCurrentSelections() {
            var currentSelection = $(".currentSelections");
            currentSelection.empty();

            currentSelection.append("<p>Filtering on:");

            $.each(selectedSearch, function (searchMenuCatagory, selection) {
                currentSelection.append('  <a href="#" onclick="removeFilter(this.id);" id="' + searchMenuCatagory + ':' + selection + '">[X] ' + searchMenuCatagory + ":" + selection + '</a>');
            });

            currentSelection.append("</p>");
        }


        function removeFilter(filter) {
            console.log("Remove filter" + filter);
            var searchFilter = filter.split(":");

            var search = "";
            for (var j = 0; j < searchFilter.length; ++j) {
                search += searchFilter[j] + " ";
            }
            console.log("Split values: '" + search + "'");

            delete selectedSearch[searchFilter[0]];
            query(catalog, selectedSearch, onData, 1);
            populateCurrentSelections();

            return false;
        }
    </script>
</head>

<body id="body">
    <header>
        <h1>Atmospheric Query and Retrieval Tool</h1>
    </header>

    <ul class='cssmenu'>

    </ul>

    <div class="currentSelections"></div>


    <div class="autocomplete">
        <div class="ui-widget">
            <label for="tags"> Search: </label>
            <input id="autocompleteText" placeholder="/cmip" class="textbox" onkeydown="if (event.keyCode == 13) submitAutoComplete(); ">
            <button id="autoButton" value="Search" onclick="submitAutoComplete()" id="autocompleteButton">Search</button>
        </div>

        <div class="page"></div>

        <table class="resultTable">


        </table>
    </div>


</body>

</html>