// vim:set sw=4 ts=4 sts=4 ft=javascript expandtab:

// Add item to localStorage

function addItem(item) {

    var files = localStorage.getItem('files');

    if (files === null) {

        files = new Array();

    } else {

        files = JSON.parse(files);

    }

    files.push(item);

    localStorage.setItem('files', JSON.stringify(files));

}

function delItem(name) {

    var files = localStorage.getItem('files');

    if (files === null) {

        files = new Array();

    } else {

        files = JSON.parse(files);

    }

    var i;

    for (i = 0; i < files.length; i++) {

        if (files[i].short === name) {

            files.splice(i, 1);

        }

    }

    localStorage.setItem('files', JSON.stringify(files));

}

function itemExists(name) {

    var files = localStorage.getItem('files');

    if (files === null) {

        return false;

    } else {

        files = JSON.parse(files);

        var i;

        for (i = 0; i < files.length; i++) {

            if (files[i].short === name) {

                return true;

            }

        }

        return false;

    }

}

function purgeExpired() {

    var files = JSON.parse(localStorage.getItem('files'));

    files.forEach(function(element, index, array) {

        $.ajax({

            url: counterURL,

            method: 'POST',

            dataType: 'json',

            data: {

                short: element.short,

                token: element.token

            },

            success: function(data, textStatus, jqXHR) {

                if (data.success) {

                    if (data.deleted) {

                        $('#count-'+data.short).parent().remove();

                        delItem(data.short);

                    }

                }

            }

        });

    });

}

function exportStorage() {

    var a   = $('');

    a.hide();

    $('body').append(a);

    var storageData = [localStorage.getItem('files')];

    var exportFile  = new Blob(storageData, {type : 'application/json'});

    var url         = window.URL.createObjectURL(exportFile);

    a.attr('href', url);

    a.attr('download', 'data.json');

    $('#data-json')[0].click();

    $('#data-json').remove();

}

function importStorage(f) {

    var reader = new FileReader();

    reader.addEventListener("loadend", function() {

        try {

            var newFiles = JSON.parse(String.fromCharCode.apply(null, new Uint8Array(reader.result)));

            var i;

            var hasImported = 0;

            for (i = 0; i < newFiles.length; i++) {

                var item = newFiles[i];

                if (!itemExists(item.short)) {

                    addItem(item);

                    hasImported++;

                }

            }

            populateFilesTable();

            Materialize.toast(i18n.importProcessed);

        } catch(err) {

            alert(err);

        }

    });

    reader.readAsArrayBuffer(f[0]);

}

function delFile() {

    var dlink = $(this).attr('data-dlink');

    var short = $(this).attr('data-short');

    $.ajax({

        url: dlink,

        method: 'GET',

        data: {

            format: 'json'

        },

        success: function(data) {

            if (data.success) {

                $('#row-'+short).remove();

                delItem(short);

            } else {

                alert(data.msg);

            }

        },

        error: function() {

        },

        complete: function() {

        }

    });

}

function evaluateMassDelete() {

    if ($('input[data-checked="data-checked"]').length > 0) {

        $('#mass-delete').removeAttr('disabled');

        $('#mass-delete').removeClass('disabled');

    } else {

        $('#mass-delete').attr('disabled');

        $('#mass-delete').addClass('disabled');

    }

}

function massDelete() {

    $('input[data-checked="data-checked"]').each(delFile);

}

function populateFilesTable() {

    $('#myfiles').empty();

    var files = JSON.parse(localStorage.getItem('files'));

    files.sort(function(a, b) {

        if (a.created_at < b.created_at) {

            return -1;

        } else if (a.created_at > b.created_at) {

            return 1;

        } else {

            return 0

        }

    });

    files.forEach(function(element, index, array) {

        var del_view   = (element.del_at_first_view) ? '' : '';

        var dlink      = baseURL+'d/'+element.short+'/'+element.token;

        var limit      = (element.delay === 0) ? i18n.noExpiration : moment.unix(element.delay * 86400 + element.created_at).locale(window.navigator.language).format('LLLL');

        var created_at = moment.unix(element.created_at).locale(window.navigator.language).format('LLLL');

        var tr = $('');

        tr.html([ '',

                      '<input type="checkbox" id="check-', element.short,'" data-short="', element.short, '" data-dlink="', dlink, '" data-checked="">',

                      '<label for="check-', element.short,'"></label>',

                  '',

                  '',

                      escapeHtml(element.name),

                  '',

                  '',

                      '',

                  '',

                  '',

                  '',

                  '',

                      del_view,

                  '',

                  '',

                      created_at,

                  '',

                  '',

                      limit,

                  '',

                  '',

                      '',

                  '',

                  '',

                      '',

                  ''].join(''));

        $('#myfiles').append(tr);

        $('#del-'+element.short).on('click', delFile);

        $('label[for="check-'+element.short+'"').on('click', function(){

            if ($('#check-'+element.short).attr('data-checked') && $('#check-'+element.short).attr('data-checked') === 'data-checked') {

                $('#check-'+element.short).attr('data-checked', null);

            } else {

                $('#check-'+element.short).attr('data-checked', 'data-checked');

            }

            evaluateMassDelete();

        });

        $.ajax({

            url: counterURL,

            method: 'POST',

            dataType: 'json',

            data: {

                short: element.short,

                token: element.token

            },

            success: function(data, textStatus, jqXHR) {

                if (data.success) {

                    $('#count-'+data.short).html(data.counter);

                    if (data.deleted) {

                        $('#count-'+data.short).parent().addClass('purple lighten-4');

                    }

                } else {

                    alert(data.msg);

                    $('#count-'+data.short).parent().remove();

                    if (data.missing) {

                        delItem(data.short);

                    }

                }

            }

        });

    });

}