// assets/scripts/report.js

import {
    parseDuration,
    roundToQuarter,
    formatMinutes,
    validateDuration,
    initDurationBlurHandler,
} from './duration.js';

// ── Hilfsfunktionen ───────────────────────────────────────────────────────────

function t(key) {
    return window.Report?.i18n?.[key] ?? key;
}

function populateProjectSelect(select, selectedId) {
    const projects = window.Report?.projects ?? [];
    select.innerHTML = '';
    projects.forEach(p => {
        const opt = document.createElement('option');
        opt.value       = p.id;
        opt.textContent = `${p.clientName} / ${p.name}`;
        if (p.id === selectedId) opt.selected = true;
        select.appendChild(opt);
    });
}

function populateServiceSelect(select, selectedId) {
    const services    = window.Report?.services ?? [];
    const billable    = services.filter(s => s.billable);
    const notBillable = services.filter(s => !s.billable);

    select.innerHTML = `<option value="">${t('selectPh')}</option>`;

    function addGroup(label, list) {
        if (!list.length) return;
        const group = document.createElement('optgroup');
        group.label = label;
        list.forEach(s => {
            const opt = document.createElement('option');
            opt.value       = s.id;
            opt.textContent = s.name;
            if (s.id === selectedId) opt.selected = true;
            group.appendChild(opt);
        });
        select.appendChild(group);
    }

    addGroup(t('billable'),    billable);
    addGroup(t('notBillable'), notBillable);
}

// ── Edit öffnen ───────────────────────────────────────────────────────────────

function openEdit(row) {
    document.querySelectorAll('.report-table__row--editing').forEach(r => {
        if (r !== row) closeEdit(r);
    });

    const editForm = row.querySelector('.report-row__edit');
    if (!editForm) return;

    // Selects klonen um akkumulierte Listener zu vermeiden
    const oldProjectSel = row.querySelector('.edit-project');
    const oldServiceSel = row.querySelector('.edit-service');
    const projectSel    = oldProjectSel.cloneNode(false);
    const serviceSel    = oldServiceSel.cloneNode(false);
    oldProjectSel.replaceWith(projectSel);
    oldServiceSel.replaceWith(serviceSel);

    const projectId = parseInt(row.dataset.projectId) || null;
    const serviceId = parseInt(row.dataset.serviceId) || null;

    populateProjectSelect(projectSel, projectId);
    populateServiceSelect(serviceSel, serviceId);

    projectSel.addEventListener('change', () => {
        populateServiceSelect(row.querySelector('.edit-service'), null);
    });

    editForm.hidden = false;
    row.classList.add('report-table__row--editing');
    row.querySelector('.edit-duration')?.focus();
}

function closeEdit(row) {
    const editForm = row.querySelector('.report-row__edit');
    if (!editForm) return;
    editForm.hidden = true;
    row.classList.remove('report-table__row--editing');
}

// ── Speichern ─────────────────────────────────────────────────────────────────

async function saveEdit(row) {
    const id          = row.dataset.entryId;
    const durationRaw = row.querySelector('.edit-duration')?.value ?? '0:00';
    const projectId   = row.querySelector('.edit-project')?.value;
    const serviceId   = row.querySelector('.edit-service')?.value;
    const note        = row.querySelector('.edit-note')?.value ?? '';

    if (!projectId) { alert(t('errorNoProject')); return; }

    const rawMinutes = roundToQuarter(parseDuration(durationRaw));

    if (rawMinutes === 0) { alert(t('errorZeroDuration')); return; }

    const validation = validateDuration(rawMinutes);
    if (validation.status === 'error') { alert(t('errorDurationTooLong')); return; }
    if (validation.status === 'warn' && !confirm(t('warnDurationLong'))) return;

    try {
        const res = await fetch(`/api/entries/${id}`, {
            method:  'PATCH',
            headers: { 'Content-Type': 'application/json' },
            body:    JSON.stringify({
                duration:  formatMinutes(rawMinutes),
                projectId: parseInt(projectId),
                serviceId: serviceId ? parseInt(serviceId) : null,
                note:      note || null,
            }),
        });

        if (!res.ok) { alert(t('errorSave')); return; }

        window.location.reload();

    } catch {
        alert(t('errorSave'));
    }
}

// ── Löschen ───────────────────────────────────────────────────────────────────

async function deleteEntry(row) {
    if (!confirm(t('confirmDelete'))) return;

    const id = row.dataset.entryId;

    try {
        const res = await fetch(`/api/entries/${id}`, { method: 'DELETE' });
        if (!res.ok) { alert(t('errorDelete')); return; }
        window.location.reload();
    } catch {
        alert(t('errorDelete'));
    }
}

// ── Abgerechnet toggeln ───────────────────────────────────────────────────────

async function toggleInvoiced(row) {
    const id  = row.dataset.entryId;
    const btn = row.querySelector('[data-action="toggle-invoiced"]');

    try {
        const res = await fetch(`/api/entries/${id}/invoiced`, { method: 'PATCH' });
        if (!res.ok) return;

        const data     = await res.json();
        const invoiced = data.invoiced;

        row.dataset.invoiced = invoiced ? 'true' : 'false';
        row.classList.toggle('report-table__row--invoiced', invoiced);

        if (btn) {
            btn.classList.toggle('report-lock--invoiced', invoiced);
            btn.title = invoiced ? t('btnUnlock') : t('btnLock');
        }

    } catch (err) {
        console.error('Fehler beim Toggeln des Abrechnungsstatus:', err);
    }
}

// ── Event-Delegation ──────────────────────────────────────────────────────────

document.addEventListener('DOMContentLoaded', () => {
    initDurationBlurHandler();

    const table = document.querySelector('.report-table');
    if (!table) return;

    table.addEventListener('click', e => {
        const btn = e.target.closest('[data-action]');
        if (!btn) return;

        const row = btn.closest('.report-table__row');
        if (!row) return;

        switch (btn.dataset.action) {
            case 'edit':             openEdit(row);       break;
            case 'cancel':           closeEdit(row);      break;
            case 'save':             saveEdit(row);       break;
            case 'delete':           deleteEntry(row);    break;
            case 'toggle-invoiced':  toggleInvoiced(row); break;
        }
    });
});