// team.js
document.addEventListener('DOMContentLoaded', () => {

    // ── Tabs ─────────────────────────────────────────────────────────────────────
    document.querySelectorAll('.crud-tab').forEach(tab => {
        tab.addEventListener('click', () => {
            document.querySelectorAll('.crud-tab').forEach(t =>
                t.classList.toggle('crud-tab--active', t === tab)
            );
            document.querySelectorAll('[data-tab-panel]').forEach(panel => {
                panel.hidden = panel.dataset.tabPanel !== tab.dataset.tab;
            });
        });
    });

    // ── Einlade-Modal ─────────────────────────────────────────────────────────────
    const modal     = document.getElementById('team-modal');
    const errorsBox = document.getElementById('team-modal-errors');

    const openModal  = () => { modal.hidden = false; };
    const closeModal = () => {
        modal.hidden     = true;
        errorsBox.hidden = true;
        ['inv-firstName', 'inv-lastName', 'inv-email'].forEach(id => {
            document.getElementById(id).value = '';
        });
        const defaultRole = modal.querySelector('input[name="inv-role"][value="member"]');
        if (defaultRole) defaultRole.checked = true;
    };

    document.getElementById('team-invite-btn').addEventListener('click', openModal);
    document.getElementById('team-modal-close').addEventListener('click', closeModal);
    document.getElementById('team-modal-cancel').addEventListener('click', closeModal);
    modal.addEventListener('click', e => { if (e.target === modal) closeModal(); });

    document.getElementById('team-modal-submit').addEventListener('click', async () => {
        const payload = {
            firstName: document.getElementById('inv-firstName').value.trim(),
            lastName:  document.getElementById('inv-lastName').value.trim(),
            email:     document.getElementById('inv-email').value.trim(),
            role:      modal.querySelector('input[name="inv-role"]:checked')?.value ?? 'member',
        };

        const res  = await fetch('/api/team/invite', {
            method:  'POST',
            headers: { 'Content-Type': 'application/json' },
            body:    JSON.stringify(payload),
        });
        const data = await res.json();

        if (!res.ok) {
            errorsBox.hidden  = false;
            errorsBox.innerHTML = '<ul>' + (data.errors ?? [data.error]).map(e => `<li>${e}</li>`).join('') + '</ul>';
            return;
        }

        closeModal();
        window.location.reload();
    });

    // ── Listen-Delegation: aktive User + Einladungen ───────────────────────────
    const list = document.getElementById('team-list');
    if (list) {
        list.addEventListener('click', e => {
            const actionEl = e.target.closest('[data-action]');
            if (!actionEl) return;

            const action = actionEl.dataset.action;
            const row    = e.target.closest('.crud-row');
            if (!row) return;

            switch (action) {
                case 'edit':         openEdit(row);         break;
                case 'save':         saveEdit(row);         break;
                case 'cancel':       closeEdit(row);        break;
                case 'delete':       deleteMember(row);     break;
                case 'delete-invite': deleteInvite(actionEl.dataset.id, row); break;
            }
        });
    }

    // ── Listen-Delegation: archivierte User ───────────────────────────────────
    const archivedList = document.getElementById('team-list-archived');
    if (archivedList) {
        archivedList.addEventListener('click', e => {
            const actionEl = e.target.closest('[data-action]');
            if (!actionEl) return;
            const row = e.target.closest('.crud-row');
            if (!row) return;

            if (actionEl.dataset.action === 'unarchive') {
                unarchiveMember(row);
            }
        });
    }

    // ── Inline Edit ───────────────────────────────────────────────────────────
    function openEdit(row) {
        row.querySelector('.crud-row__display').hidden = true;
        row.querySelector('.crud-row__edit').hidden    = false;
        row.querySelector('.edit-first-name')?.focus();
    }

    function closeEdit(row) {
        row.querySelector('.crud-row__display').hidden = false;
        row.querySelector('.crud-row__edit').hidden    = true;

        // Felder auf ursprüngliche Werte zurücksetzen
        row.querySelector('.edit-first-name').value = row.dataset.firstName ?? '';
        row.querySelector('.edit-last-name').value  = row.dataset.lastName  ?? '';
        row.querySelector('.edit-email').value       = row.dataset.email     ?? '';
        row.querySelector('.edit-note').value        = row.dataset.note      ?? '';

        const currentRole = row.dataset.role;
        row.querySelectorAll('.edit-role').forEach(radio => {
            radio.checked = radio.value === currentRole;
        });
    }

    async function saveEdit(row) {
        const id        = row.dataset.id;
        const firstName = row.querySelector('.edit-first-name').value.trim();
        const lastName  = row.querySelector('.edit-last-name').value.trim();
        const email     = row.querySelector('.edit-email').value.trim();
        const note      = row.querySelector('.edit-note').value || null;
        const role      = row.querySelector('.edit-role:checked')?.value ?? row.dataset.role;

        const res = await fetch(`/api/team/${id}`, {
            method:  'PATCH',
            headers: { 'Content-Type': 'application/json' },
            body:    JSON.stringify({ firstName, lastName, email, note, role }),
        });

        if (!res.ok) {
            const data = await res.json();
            alert((data.errors ?? [data.error]).join('\n'));
            return;
        }

        const data = await res.json();
        updateDisplay(row, data);
        closeEdit(row);
    }

    function updateDisplay(row, data) {
        row.querySelector('.crud-row__name').textContent = data.fullName;
        row.querySelector('.crud-row__meta').textContent = `(${data.roleLabel})`;

        row.dataset.firstName = data.firstName;
        row.dataset.lastName  = data.lastName;
        row.dataset.email     = data.email;
        row.dataset.note      = data.note ?? '';
        row.dataset.role      = data.role;

        // Edit-Felder aktualisieren
        row.querySelector('.edit-first-name').value = data.firstName;
        row.querySelector('.edit-last-name').value  = data.lastName;
        row.querySelector('.edit-email').value       = data.email;
        row.querySelector('.edit-note').value        = data.note ?? '';
        row.querySelectorAll('.edit-role').forEach(radio => {
            radio.checked = radio.value === data.role;
        });
    }

    // ── Delete ────────────────────────────────────────────────────────────────
    async function deleteMember(row) {
        if (!confirm('Wirklich entfernen?')) return;

        const id  = row.dataset.id;
        const res = await fetch(`/api/team/${id}`, { method: 'DELETE' });

        if (res.status === 409) {
            if (confirm('Dieser Benutzer hat Zeiteinträge und kann nicht gelöscht werden.\nStattdessen archivieren?')) {
                await archiveMember(row);
            }
            return;
        }

        if (!res.ok) {
            const data = await res.json();
            alert(data.error ?? 'Fehler beim Löschen.');
            return;
        }

        row.classList.add('crud-row--removing');
        setTimeout(() => row.remove(), 280);
    }

    async function deleteInvite(id, row) {
        if (!confirm('Einladung zurückziehen?')) return;

        const res = await fetch(`/api/team/invite/${id}`, { method: 'DELETE' });
        if (!res.ok) {
            const data = await res.json();
            alert(data.error ?? 'Fehler');
            return;
        }

        row.classList.add('crud-row--removing');
        setTimeout(() => row.remove(), 280);
    }

    // ── Archive / Unarchive ───────────────────────────────────────────────────
    async function archiveMember(row) {
        const id  = row.dataset.id;
        const res = await fetch(`/api/team/${id}/archive`, { method: 'PATCH' });

        if (!res.ok) { alert('Fehler beim Archivieren.'); return; }

        row.classList.add('crud-row--removing');
        setTimeout(() => window.location.reload(), 280);
    }

    async function unarchiveMember(row) {
        const id  = row.dataset.id;
        const res = await fetch(`/api/team/${id}/unarchive`, { method: 'PATCH' });

        if (!res.ok) { alert('Fehler beim Wiederherstellen.'); return; }

        row.classList.add('crud-row--removing');
        setTimeout(() => window.location.reload(), 280);
    }
});