var atlasEditor = ace.edit("atlas-config-editor");
atlasEditor.setTheme("ace/theme/monokai");
atlasEditor.session.setMode("ace/mode/text");
atlasEditor.session.setUseWrapMode(true);

var jsonEditor = ace.edit("json-config-editor");
jsonEditor.setTheme("ace/theme/monokai");
jsonEditor.session.setMode("ace/mode/json");

var parser;

$.get('js/atlas.pegjs', function (data) {
    parser = PEG.buildParser(data);
});

ko.applyBindings({});

function fromAtlasToJson() {
    var input = atlasEditor.getValue();
    var output = parser.parse(input);
    jsonEditor.setValue(ko.toJSON(output, null, 2));
}

function fromJsonToAtlas() {
    var input = JSON.parse(jsonEditor.getValue());

    console.log(input);

    var output = deparseJson(input);

    console.log(output);
    atlasEditor.setValue(output);
}

function deparseJson(input) {
    switch (typeof input) {
        case "object":
            return deparseObject(input);
        case "number":
            return deparseNumber(input);
        case "string":
            return deparseString(input);
        case "undefined":
            return "";
        case "boolean":
            return deparseBoolean(input);
        default:
            console.log("Unknown type for input", input);
            return "";
    }
}

function deparseObject(input) {
    if (Array.isArray(input)) {
        return deparseArray(input);
    }
    if (input === null) {
        return "None";
    }

    var beginObject = '(';
    var endObject = ')';
    var nameSeparator = '=';
    var valueSeparator = ',';

    var output = '';
    output += beginObject;

    Object.keys(input).forEach(function (key, idx, array) {
        output += key;
        output += nameSeparator;
        output += deparseJson(input[key]);

        if (idx !== array.length - 1) {
            // Not the last item
            output += valueSeparator
        }
    });
    output += endObject;

    return output;
}

function deparseArray(input) {
    // We have one funky array option, where its 2 values and one of them is a recognised class.
    if (input[0] === "BlueprintGeneratedClass") {
        return "BlueprintGeneratedClass" + "'" + input[1] + "'";
    }
    if (input[0] === "SoundWave") {
        return "SoundWave" + "'" + input[1] + "'"
    }

    var beginObject = '(';
    var endObject = ')';
    var valueSeparator = ',';

    var output = '';
    output += beginObject;

    input.forEach(function (data, idx, array) {
        output += deparseJson(data);

        if (idx !== array.length - 1) {
            output += valueSeparator;
        }
    });
    output += endObject;

    return output;
}

function deparseNumber(input) {
    // All numbers seem to be a string to 6 decimal places
    return Number(input).toFixed(6);
}

function deparseString(input) {
    // We need to re-encode the strings properly
    return JSON.stringify(input);
}

function deparseBoolean(input) {
    if ( input ) {
        return 'True';
    } else {
        return 'False';
    }
}