// ==UserScript==
// @name         Anime-Loads: Verlauf-Massenlöschung
// @namespace    https://git.ponywave.de/Akamaru/Userscripts
// @version      1.2
// @description  Fügt Buttons hinzu, um Verlaufseinträge auf anime-loads.org schneller zu löschen
// @author       Akamaru
// @match        https://www.anime-loads.org/history*
// @grant        none
// @updateURL    https://git.ponywave.de/Akamaru/Userscripts/raw/branch/master/anime-loads-bulk-delete-history.user.js
// @downloadURL  https://git.ponywave.de/Akamaru/Userscripts/raw/branch/master/anime-loads-bulk-delete-history.user.js
// ==/UserScript==

(function() {
    'use strict';

    // Warte bis die Seite geladen ist
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }

    function init() {
        // Prüfe ob Bulk-Delete läuft
        checkAndContinueBulkDelete();

        const historyDiv = document.getElementById('history');
        if (!historyDiv) return;

        // Erstelle Button-Container
        const buttonContainer = document.createElement('div');
        buttonContainer.style.cssText = 'margin-bottom: 15px; padding: 10px; background-color: #f5f5f5; border-radius: 5px;';

        // Button: Alle löschen
        const deleteAllBtn = document.createElement('button');
        deleteAllBtn.textContent = 'Alle löschen';
        deleteAllBtn.className = 'btn btn-danger';
        deleteAllBtn.style.marginRight = '10px';
        deleteAllBtn.onclick = deleteAll;

        // Button: Ausgewählte löschen
        const deleteSelectedBtn = document.createElement('button');
        deleteSelectedBtn.textContent = 'Ausgewählte löschen';
        deleteSelectedBtn.className = 'btn btn-warning';
        deleteSelectedBtn.style.marginRight = '10px';
        deleteSelectedBtn.onclick = deleteSelected;

        // Button: Alle auswählen/abwählen
        const toggleAllBtn = document.createElement('button');
        toggleAllBtn.textContent = 'Alle auswählen';
        toggleAllBtn.className = 'btn btn-primary';
        toggleAllBtn.style.marginRight = '10px';
        toggleAllBtn.onclick = function() {
            const checkboxes = historyDiv.querySelectorAll('.bulk-delete-checkbox');
            const allChecked = Array.from(checkboxes).every(cb => cb.checked);
            checkboxes.forEach(cb => cb.checked = !allChecked);
            toggleAllBtn.textContent = allChecked ? 'Alle auswählen' : 'Alle abwählen';
            updateCounter();
        };

        // Zähler für ausgewählte Einträge
        const counterSpan = document.createElement('span');
        counterSpan.id = 'selection-counter';
        counterSpan.style.cssText = 'margin-left: 15px; font-weight: bold; font-size: 16px;';
        counterSpan.textContent = 'Ausgewählt: 0';

        buttonContainer.appendChild(deleteAllBtn);
        buttonContainer.appendChild(deleteSelectedBtn);
        buttonContainer.appendChild(toggleAllBtn);
        buttonContainer.appendChild(counterSpan);

        // Füge Button-Container vor dem History-Div ein
        historyDiv.parentNode.insertBefore(buttonContainer, historyDiv);

        // Füge Checkboxen zu jedem Eintrag hinzu
        addCheckboxes();
    }

    function updateCounter() {
        const counter = document.getElementById('selection-counter');
        if (!counter) return;

        const checked = document.querySelectorAll('.bulk-delete-checkbox:checked').length;
        const total = document.querySelectorAll('.bulk-delete-checkbox').length;
        counter.textContent = `Ausgewählt: ${checked} / ${total}`;
    }

    function addCheckboxes() {
        const historyDiv = document.getElementById('history');
        if (!historyDiv) return;

        const rows = historyDiv.querySelectorAll('table tbody tr');
        rows.forEach(row => {
            if (row.querySelector('.bulk-delete-checkbox')) return;

            const removeBtn = row.querySelector('.remove-history');
            if (!removeBtn) return;

            const checkbox = document.createElement('input');
            checkbox.type = 'checkbox';
            checkbox.className = 'bulk-delete-checkbox';
            checkbox.style.cssText = 'margin-right: 10px; transform: scale(1.3);';
            checkbox.addEventListener('change', updateCounter);

            const td = removeBtn.closest('td');
            td.insertBefore(checkbox, td.firstChild);
        });

        updateCounter();
    }

    function showModal(message, onConfirm) {
        // Erstelle Modal-Overlay
        const overlay = document.createElement('div');
        overlay.style.cssText = 'position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 9999; display: flex; align-items: center; justify-content: center;';

        // Erstelle Modal-Content
        const modal = document.createElement('div');
        modal.className = 'modal-content';
        modal.style.cssText = 'background: white; padding: 25px; border-radius: 8px; max-width: 500px; box-shadow: 0 4px 6px rgba(0,0,0,0.1);';

        const messageEl = document.createElement('p');
        messageEl.textContent = message;
        messageEl.style.cssText = 'margin: 0 0 20px 0; font-size: 16px;';

        const buttonContainer = document.createElement('div');
        buttonContainer.style.cssText = 'display: flex; justify-content: flex-end; gap: 10px;';

        const cancelBtn = document.createElement('button');
        cancelBtn.textContent = 'Abbrechen';
        cancelBtn.className = 'btn btn-default';
        cancelBtn.onclick = () => overlay.remove();

        const confirmBtn = document.createElement('button');
        confirmBtn.textContent = 'Bestätigen';
        confirmBtn.className = 'btn btn-danger';
        confirmBtn.onclick = () => {
            overlay.remove();
            onConfirm();
        };

        buttonContainer.appendChild(cancelBtn);
        buttonContainer.appendChild(confirmBtn);
        modal.appendChild(messageEl);
        modal.appendChild(buttonContainer);
        overlay.appendChild(modal);
        document.body.appendChild(overlay);

        // Schließe Modal bei Klick auf Overlay
        overlay.addEventListener('click', (e) => {
            if (e.target === overlay) overlay.remove();
        });
    }

    function deleteAll() {
        showDeleteOptionsModal();
    }

    function showDeleteOptionsModal() {
        // Erstelle Modal-Overlay
        const overlay = document.createElement('div');
        overlay.style.cssText = 'position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 9999; display: flex; align-items: center; justify-content: center;';

        // Erstelle Modal-Content
        const modal = document.createElement('div');
        modal.className = 'modal-content';
        modal.style.cssText = 'background: white; padding: 25px; border-radius: 8px; max-width: 500px; box-shadow: 0 4px 6px rgba(0,0,0,0.1);';

        const title = document.createElement('h3');
        title.textContent = 'Verlauf löschen';
        title.style.cssText = 'margin: 0 0 20px 0;';

        const optionsDiv = document.createElement('div');
        optionsDiv.style.cssText = 'margin-bottom: 20px;';

        // Option 1: Aktuelle Seite
        const currentPageBtn = document.createElement('button');
        currentPageBtn.textContent = 'Aktuelle Seite löschen';
        currentPageBtn.className = 'btn btn-warning';
        currentPageBtn.style.cssText = 'width: 100%; margin-bottom: 10px;';
        currentPageBtn.onclick = () => {
            overlay.remove();
            deleteCurrentPage();
        };

        // Option 2: Gesamter Verlauf
        const allPagesBtn = document.createElement('button');
        allPagesBtn.textContent = 'Gesamten Verlauf löschen';
        allPagesBtn.className = 'btn btn-danger';
        allPagesBtn.style.cssText = 'width: 100%; margin-bottom: 10px;';
        allPagesBtn.onclick = () => {
            overlay.remove();
            deleteAllPages();
        };

        // Option 3: Seite x bis x
        const rangeDiv = document.createElement('div');
        rangeDiv.style.cssText = 'display: flex; gap: 10px; align-items: center; margin-bottom: 10px;';

        const fromInput = document.createElement('input');
        fromInput.type = 'number';
        fromInput.placeholder = 'Von Seite';
        fromInput.className = 'form-control';
        fromInput.style.cssText = 'flex: 1;';
        fromInput.min = '1';

        const toInput = document.createElement('input');
        toInput.type = 'number';
        toInput.placeholder = 'Bis Seite';
        toInput.className = 'form-control';
        toInput.style.cssText = 'flex: 1;';
        toInput.min = '1';

        const rangeBtn = document.createElement('button');
        rangeBtn.textContent = 'Löschen';
        rangeBtn.className = 'btn btn-primary';
        rangeBtn.onclick = () => {
            const from = parseInt(fromInput.value);
            const to = parseInt(toInput.value);
            if (from && to && from <= to) {
                overlay.remove();
                deletePageRange(from, to);
            } else {
                alert('Bitte gültige Seitenzahlen eingeben.');
            }
        };

        rangeDiv.appendChild(fromInput);
        rangeDiv.appendChild(toInput);
        rangeDiv.appendChild(rangeBtn);

        // Abbrechen Button
        const cancelBtn = document.createElement('button');
        cancelBtn.textContent = 'Abbrechen';
        cancelBtn.className = 'btn btn-default';
        cancelBtn.style.cssText = 'width: 100%;';
        cancelBtn.onclick = () => overlay.remove();

        optionsDiv.appendChild(currentPageBtn);
        optionsDiv.appendChild(allPagesBtn);
        optionsDiv.appendChild(rangeDiv);
        optionsDiv.appendChild(cancelBtn);

        modal.appendChild(title);
        modal.appendChild(optionsDiv);
        overlay.appendChild(modal);
        document.body.appendChild(overlay);

        // Schließe Modal bei Klick auf Overlay
        overlay.addEventListener('click', (e) => {
            if (e.target === overlay) overlay.remove();
        });
    }

    function deleteCurrentPage() {
        const removeButtons = Array.from(document.querySelectorAll('.remove-history'));
        showModal(`Möchtest du wirklich alle ${removeButtons.length} Einträge auf dieser Seite löschen?`, () => {
            deleteEntries(removeButtons);
        });
    }

    async function deleteAllPages() {
        const pagination = document.querySelector('.pagination');
        if (!pagination) {
            showModal('Keine Pagination gefunden.', () => {});
            return;
        }

        const pageLinks = Array.from(pagination.querySelectorAll('li a'));
        const pageNumbers = pageLinks
            .map(link => {
                const match = link.href.match(/\/page\/(\d+)/);
                return match ? parseInt(match[1]) : 0;
            })
            .filter(num => num > 0);

        const lastPage = pageNumbers.length > 0 ? Math.max(...pageNumbers) : 1;

        showModal(`Möchtest du wirklich den GESAMTEN Verlauf löschen (${lastPage} Seiten)?`, async () => {
            await deletePageRange(1, lastPage);
        });
    }

    function deletePageRange(fromPage, toPage) {
        // Speichere Lösch-Status in localStorage
        localStorage.setItem('bulkDeleteFrom', fromPage);
        localStorage.setItem('bulkDeleteTo', toPage);
        localStorage.setItem('bulkDeleteCurrent', fromPage);

        // Starte Löschvorgang
        const url = fromPage === 1 ? 'https://www.anime-loads.org/history' : `https://www.anime-loads.org/history/page/${fromPage}`;
        window.location.href = url;
    }

    function checkAndContinueBulkDelete() {
        const current = parseInt(localStorage.getItem('bulkDeleteCurrent'));
        const to = parseInt(localStorage.getItem('bulkDeleteTo'));

        if (!current || !to) return;

        // Zeige Fortschritt mit Abbrechen-Button
        const progress = document.createElement('div');
        progress.style.cssText = 'position: fixed; top: 20px; right: 20px; background: #f0ad4e; color: white; padding: 15px; border-radius: 5px; z-index: 10000; font-weight: bold;';

        const progressText = document.createElement('div');
        progressText.textContent = `Lösche Seite ${current} von ${to}...`;
        progressText.style.marginBottom = '10px';

        const cancelBtn = document.createElement('button');
        cancelBtn.textContent = 'Abbrechen';
        cancelBtn.className = 'btn btn-sm btn-default';
        cancelBtn.onclick = () => {
            localStorage.removeItem('bulkDeleteFrom');
            localStorage.removeItem('bulkDeleteTo');
            localStorage.removeItem('bulkDeleteCurrent');
            window.location.href = 'https://www.anime-loads.org/history';
        };

        progress.appendChild(progressText);
        progress.appendChild(cancelBtn);
        document.body.appendChild(progress);

        // Lösche alle Einträge auf der aktuellen Seite
        const removeButtons = Array.from(document.querySelectorAll('.remove-history'));
        removeButtons.forEach(btn => btn.click());

        // Warte, dann gehe zur nächsten Seite
        setTimeout(() => {
            if (current < to) {
                const nextPage = current + 1;
                localStorage.setItem('bulkDeleteCurrent', nextPage);
                const url = nextPage === 1 ? 'https://www.anime-loads.org/history' : `https://www.anime-loads.org/history/page/${nextPage}`;
                window.location.href = url;
            } else {
                // Fertig - lösche Status
                localStorage.removeItem('bulkDeleteFrom');
                localStorage.removeItem('bulkDeleteTo');
                localStorage.removeItem('bulkDeleteCurrent');
                window.location.href = 'https://www.anime-loads.org/history';
            }
        }, 2000);
    }

    function deleteSelected() {
        const checkboxes = Array.from(document.querySelectorAll('.bulk-delete-checkbox:checked'));
        if (checkboxes.length === 0) {
            showModal('Bitte wähle mindestens einen Eintrag aus.', () => {});
            return;
        }

        showModal(`Möchtest du ${checkboxes.length} Einträge aus dem Verlauf löschen?`, () => {
            const removeButtons = checkboxes.map(cb => cb.closest('td').querySelector('.remove-history'));
            deleteEntries(removeButtons);
        });
    }

    function deleteEntries(buttons) {
        let processed = 0;
        const total = buttons.length;

        buttons.forEach((btn, index) => {
            setTimeout(() => {
                // Prüfe ob Button noch im DOM existiert
                if (document.body.contains(btn)) {
                    btn.click();
                }
                processed++;

                if (processed === total) {
                    setTimeout(() => {
                        // Seite neu laden
                        location.reload();
                    }, 1000); // Längere Wartezeit für alle Lösch-Requests
                }
            }, index * 300); // Längere Verzögerung zwischen Klicks
        });
    }
})();