// sparql edit function

// ASK, null

const ASK_RESULT_FORMAT = [

    ["HTML", "text/html"]

];

// SELECT

const SELECT_RESULT_FORMAT = [

    ["HTML", "text/html"],

    ["SPARQL/CSV", "text/csv"],

    ["SPARQL/JSON", "application/sparql-results+json"],

    ["SPARQL/XML", "application/sparql-results+xml"],

    ["SPARQL/TSV", "text/tab-separated-values"],

    ["BINARY", "application/x-binary-rdf-results-table"]

];

// DESCRIBE,CONSTRUCT

const GRAPH_RESULT_FORMAT = [

    ["HTML", "text/html"],

    ["N-Triples", "application/n-triples"],

    ["RDF/XML", "application/rdf+xml"],

    ["Turtle", "text/turtle"],

    ["N3", "text/n3"],

    ["RDF/JSON", "application/rdf+json"],

    ["TriG", "application/trig"],

    ["N-Quads", "application/n-quads"],

    ["BinaryRDF", "application/x-binary-rdf"],

    ["TriX", "application/trix"],

    ["JSON-LD", "application/ld+json"]

];

function setOutputFormatSelect(selectElt, optionsList) {

    var keys = $.map(optionsList, function(o) { return o[0];});

    var selectedKey = $(":selected",selectElt).text();

    if(!selectedKey || $.inArray(selectedKey, keys) === -1) {

        selectedKey = "HTML";

    }

    selectElt.empty();

    var innerHtml = "";

    $.each(optionsList, function(i, o) {

        innerHtml += "<option value=\""+o[1]+"\""+ ((o[0]==selectedKey)?" selected=\"selected\" ":"") +">"+o[0]+"<options>";

    });

    selectElt.append(innerHtml);

}

var currentQueryType = null;

function updateQueryType(queryType) {

    var resultFormats = ASK_RESULT_FORMAT;

    if(currentQueryType != queryType) {

        if(queryType == "SELECT") {

            resultFormats = SELECT_RESULT_FORMAT;

        } else if (queryType == "DESCRIBE" || queryType == "CONSTRUCT") {

            resultFormats = GRAPH_RESULT_FORMAT;

        }

        setOutputFormatSelect($("#format"),resultFormats);

        currentQueryType = queryType;

    }

}

function getSubmitState(editor) {

    var parseErrors = $(".parseErrorIcon").length;

    return editor.getQueryMode() === 'query' && parseErrors == 0 && !/^\s*$/.test(editor.getValue());

}

function initSparqlEditor() {

    var yasqe = YASQE.fromTextArea($('#query').get(0), {

        sparql: {

            showQueryButton: false,

            //endpoint: "{{ route('sparql_proxy') }}",

            //requestMethod: "GET",

            //acceptHeaderGraph: "application/rdf+json,/;q=0.9"

            //acceptHeaderGraph: "text/turtle,/;q=0.9",

            //acceptHeaderSelect: "application/x-turtle,/;q=0.9",

        }

    });

    yasqe.on("update", function(instance) {

        var queryType = instance.getQueryType();

        updateQueryType(queryType);

        var submitState = getSubmitState(instance);

        $("#submit-query-form").prop('disabled', !submitState );

        $("#format").prop('disabled', !submitState );

        $("#timeout").prop('disabled', !submitState );

    });

    $("#query-form").submit(function() {

        return getSubmitState(yasqe);

    });

    $("#limits-choices a").click(function(e) {

        e.preventDefault();

        $('#limit').val($(e.target).text());

    });

    // var yasr = YASR($('#results').get(0), {

    //     getUsedPrefixes: yasqe.getPrefixesFromQuery,

    //     useGoogleCharts: false,

    //     outputPlugins: ["table", "error", "boolean", "rawResponse", "pivot"],

    // });

    // yasqe.options.sparql.callbacks.complete = yasr.setResponse;

}