/*  flickrlicense -- A thingy to update Flickr photo licenses
 *  Copyright (C) 2017  Douglas Thrift
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published
 *  by the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

$(function() {
    var errorTag = $('#error');
    var reloadPhotosTag = $('#reload_photos');
    var showLicenseTag = $('#show_license');
    var showLicenseVal = showLicenseTag.val();
    var showPrivacyTag = $('#show_privacy');
    var showPrivacyVal = showPrivacyTag.val();
    var showIgnoredTag = $('#show_ignored');
    var showIgnoredVal = showIgnoredTag.val();
    var photosTag = $('#photos');
    var selectLicenseTag = $('#select_license');
    var applyLicenseTag = $('#apply_license');
    var licenseLinkTag = $('#license_link');
    var selectedCountTag = $('#selected_count');
    var selectedNounTag = $('#selected_noun');

    function controlsDisabled(disabled) {
        reloadPhotosTag.prop('disabled', disabled);
        showLicenseTag.prop('disabled', disabled);
        showPrivacyTag.prop('disabled', disabled);
        showIgnoredTag.prop('disabled', disabled);
        selectLicenseTag.prop('disabled', disabled);
        photosTag.find('.photo button').prop('disabled', disabled);
    }

    function filterPhotos() {
        var count = 0;
        photosTag.children('.photo').each(function(index, element) {
            var photoTag = $(element);
            var show = true;
            var ignore = photoTag.hasClass('ignored');

            if (showLicenseVal != '' && !photoTag.hasClass('license-' + showLicenseVal)) {
                show = false;
            }

            if (showPrivacyVal != 'all' && !photoTag.hasClass(showPrivacyVal)) {
                show = false;
            }

            if (showIgnoredVal != 'true' && ignore) {
                show = false;
            }

            if (show) {
                if (!ignore) {
                    count++;
                }

                photoTag.show();
            } else {
                photoTag.hide();
            }
        });
        selectedCountTag.text(count);
        selectedNounTag.text(count == 1 ? "photo" : "photos");
    }

    function reloadPhotos(params = {}, path = '/photos/1') {
        controlsDisabled(true);
        $.getJSON(path, params, function(data) {
            photosTag.children('.spinner').remove();

            for (let photo of data.photos) {
                let privacy;
                let privacyTag = $('<span class="tag-box">');

                if (photo.public) {
                    privacy = 'public';
                    privacyTag.text('public');
                } else if (photo.friend && photo.family) {
                    privacy = 'friends_family';
                    privacyTag.text('friends&family');
                } else if (photo.friend) {
                    privacy = 'friends';
                    privacyTag.text('friends');
                } else if (photo.family) {
                    privacy = 'family';
                    privacyTag.text('family');
                } else {
                    privacy = 'private';
                    privacyTag.text('private');
                }

                let photoTag = $('<div class="photo" column>').addClass('license-' + photo.license).addClass(privacy).data('photo', photo);
                let ignoreTag = $('<button>').click(function() {
                    ignore = !photo.ignore;
                    ignoreTag.prop('disabled', true)
                    $.post('/photos', {ignore: ignore, photo: photo.id}, function() {
                        photo.ignore = ignore;

                        if (ignore) {
                            photoTag.addClass('ignored');
                            ignoreTag.removeClass('-bordered').text('ignored');
                        } else {
                            photoTag.removeClass('ignored');
                            ignoreTag.addClass('-bordered').text('ignore');
                        }

                        filterPhotos();

                        ignoreTag.prop('disabled', false)
                    }).fail(function() {
                        ignoreTag.prop('disabled', false)
                    });
                });

                if (photo.ignore) {
                    photoTag.addClass('ignored');
                    ignoreTag.text('ignored');
                } else {
                    ignoreTag.addClass('-bordered').text('ignore');
                }

                let license = licenses[photo.license];

                photoTag.append($('<div class="card-box">').append([
                    $('<a>', {href: photo.url, target: '_blank'}).append($('<img>', {title: photo.title, src: photo.img})),
                    $('<div class="card-content">').append([
                        $('<span>', {class: 'license tag-box', title: license.name}).html(license.icon),
                        '<br>',
                        privacyTag,
                        '<br>',
                        ignoreTag,
                    ]),
                ]));
                photosTag.append(photoTag);
            }

            if (data.path) {
                reloadPhotos({}, data.path);
            } else {
                filterPhotos();
                controlsDisabled(false);
            }
        }).fail(function() {
            controlsDisabled(false);
        });
    }

    function showLicense() {
        if (showLicenseVal == showLicenseTag.val()) {
            filterPhotos();
        } else {
            $.post('/user', {show_license: showLicenseTag.val()}, function() {
                showLicenseVal = showLicenseTag.val();
                showLicense();
            }).fail(function() {
                showLicenseTag.val(showLicenseVal);
            });
        }
    }

    function showPrivacy() {
        if (showPrivacyVal == showPrivacyTag.val()) {
            filterPhotos();
        } else {
            $.post('/user', {show_privacy: showPrivacyTag.val()}, function() {
                showPrivacyVal = showPrivacyTag.val();
                showPrivacy();
            }).fail(function() {
                showPrivacyTag.val(showPrivacyVal);
            });
        }
    }

    function showIgnored() {
        if (showIgnoredVal == showIgnoredTag.val()) {
            filterPhotos();
        } else {
            $.post('/user', {show_ignored: showIgnoredTag.val()}, function() {
                showIgnoredVal = showIgnoredTag.val();
                showIgnored();
            }).fail(function() {
                showIgnoredTag.val(showIgnoredVal);
            });
        }
    }

    function applyLicense(license, photos, index = 0) {
        if (index >= photos.length) {
            applyLicenseTag.prop('disabled', false);
            return controlsDisabled(false);
        }

        applyLicenseTag.prop('disabled', true);
        controlsDisabled(true);

        var photoTag = $(photos[index]);
        var photo = photoTag.data('photo');

        if (photo.ignore || photo.license == license) {
            applyLicense(license, photos, ++index);
        } else {
            $.post(photo.path, {license: license}, function() {
                photoTag.removeClass('license-' + photo.license).addClass('license-' + license);
                photo.license = license;
                {
                    let license = licenses[photo.license];
                    photoTag.find('.license').attr('title', license.name).html(license.icon);
                }
                filterPhotos();
                applyLicense(license, photos, ++index);
            }).fail(function() {
                applyLicenseTag.prop('disabled', false);
                controlsDisabled(false);
            });
        }
    }

    errorTag.dialog({autoOpen: false, modal: true});
    $(document).ajaxError(function(event, request, settings, error) {
        if (request.responseJSON && request.responseJSON.error) {
            errorTag.text(request.responseJSON.error);
        } else {
            errorTag.empty().append($('<div>').text(request.status + ' ' + error), $('<iframe>', {srcdoc: request.responseText}));
        }
        errorTag.dialog('open');
    });
    reloadPhotosTag.click(function() {
        photosTag.empty().append('<div class="spinner">');
        selectLicenseTag.val('').change();
        reloadPhotos({reload: true});
    });
    showLicenseTag.change(showLicense);
    showPrivacyTag.change(showPrivacy);
    showIgnoredTag.change(showIgnored);
    selectLicenseTag.change(function() {
        applyLicenseTag.prop('disabled', selectLicenseTag.val() == '');
        var license = licenses[selectLicenseTag.val()];
        if (license) {
            licenseLinkTag.html(license.url ? $('<a>', {href: license.url, target: '_blank'}).html(license.iconname) : license.iconname);
        } else {
            licenseLinkTag.empty();
        }
    });
    applyLicenseTag.click(function() {
        applyLicense(selectLicenseTag.val(), photosTag.children('.photo:visible'));
    });

    reloadPhotos();
});