/* V5 composes the established V4 controls without copying their implementations. */
(() => {
    'use strict';
    const config = JSON.parse(document.getElementById('caseV5Data').textContent);
    const byId = id => document.getElementById(id);
    const shell = document.querySelector('.case-detail-page-shell');
    shell.classList.add('case-v5');
    const billingHost = document.createElement('div');
    billingHost.className='col-12';
    billingHost.innerHTML='<label for="v5QuickBilling" class="form-label small">Afregning</label><select id="v5QuickBilling" class="form-select form-select-sm" disabled><option>Indlæser afregning…</option></select><div id="v5BillingHint" class="form-text">Kladder kontrolleres af en chef før afregning.</div>';
    byId('commentQuickTimeRow').querySelector('.row').append(billingHost);
    const compactBillingHost=billingHost.cloneNode(true);
    compactBillingHost.querySelector('label').htmlFor='v5CompactBilling';
    compactBillingHost.querySelector('select').id='v5CompactBilling';
    compactBillingHost.querySelector('.form-text').removeAttribute('id');
    byId('caseQuickTimeDraftForm').querySelector('.row').insertBefore(compactBillingHost,byId('caseQuickTimeSaveButton').parentElement);
    byId('caseQuickTimeSaveButton').innerHTML='<i class="bi bi-plus-lg me-1"></i>Gem tid';
    function setAutomaticRegistrationControls(workflowActive = false) {
        const text=workflowActive?'Afregning vælges automatisk':'Tid gemmes som kladde. Afregning vælges i Tidsregistrering.';
        for(const select of [byId('v5QuickBilling'),byId('v5CompactBilling'),byId('time_billing_method'),byId('quickTimeBillingMethod')].filter(Boolean)) {
            select.replaceChildren(new Option('Automatisk / kladde','draft'));
            select.value='draft';select.disabled=true;select.hidden=true;select.dataset.billingReady='true';
            const label=select.parentElement.querySelector(`label[for="${select.id}"]`);if(label)label.hidden=true;
        }
        for(const host of [billingHost,compactBillingHost])host.querySelector('.form-text').textContent=text;
        for(const id of ['time_internal','sol_time_internal']){const checkbox=byId(id);if(checkbox){checkbox.checked=false;checkbox.disabled=true;const wrapper=checkbox.closest('.form-check');if(wrapper)wrapper.hidden=true;}}
    }
    setAutomaticRegistrationControls();
    const previewFields=[
        {host:compactBillingHost,minutes:'caseQuickTimeMinutes',description:'caseQuickTimeDescription',type:'caseQuickTimeType'},
        {host:billingHost,minutes:'commentQuickTimeMinutes',description:'commentText',type:'commentQuickTimeType'}
    ];
    let previewTimer;
    async function refreshBillingPreview() {
        const names={subscription:'Fastpris',prepaid:'Klippekort',invoice:'Faktura',internal:'Intern tid',non_billable:'Ikke fakturerbar',draft:'Kladde'};
        await Promise.all(previewFields.map(async fields=>{
            const sequence=(fields.sequence||0)+1;fields.sequence=sequence;
            const hint=fields.host.querySelector('.form-text');
            const params=new URLSearchParams({minutes:Math.max(1,Number(byId(fields.minutes)?.value)||30),description:(byId(fields.description)||document.querySelector('textarea[name=indhold]'))?.value||'',time_type:byId(fields.type)?.value||'support'});
            try {
                const response=await fetch(`/api/v1/timetracking/cases/${config.caseId}/billing-preview?${params}`,{credentials:'include'});
                const data=await response.json();if(!response.ok)throw new Error('Preview failed');
                if(sequence!==fields.sequence)return;
                hint.textContent='Forslag: '+(data.status==='manual_review'?'Manuel vurdering':names[data.method]||'Manuel vurdering');
            } catch(error) {if(sequence===fields.sequence)hint.textContent='Afregningsforslag kunne ikke beregnes.';}
        }));
    }
    function scheduleBillingPreview(){clearTimeout(previewTimer);previewTimer=setTimeout(refreshBillingPreview,250);}
    for(const fields of previewFields)for(const id of [fields.minutes,fields.description,fields.type]){
        const input=byId(id)||(id==='commentText'?document.querySelector('textarea[name=indhold]'):null);if(input){input.addEventListener('input',scheduleBillingPreview);input.addEventListener('change',scheduleBillingPreview);input.addEventListener('focus',scheduleBillingPreview);}
    }
    const tagList=byId('case-tags-module');
    if(tagList)new MutationObserver(scheduleBillingPreview).observe(tagList,{childList:true,subtree:true});
    async function loadBillingOptions() {
        try {
            const response=await fetch(`/api/v1/timetracking/cases/${config.caseId}/billing-options`,{credentials:'include'});
            const data=await response.json();
            if(!response.ok)throw new Error(data.detail || 'Afregningsmuligheder kunne ikke hentes');
            setAutomaticRegistrationControls(data.workflow_active===true);
            await refreshBillingPreview();
            const anchor=byId('timeV1Date');
            if(anchor&&!byId('v5TabBilling')) {
                const host=document.createElement('div');host.className='col-12';
                const label=document.createElement('label');label.htmlFor='v5TabBilling';label.className='form-label small';label.textContent='Afregning (valgfrit)';
                const select=document.createElement('select');select.id='v5TabBilling';select.className='form-select form-select-sm';
                select.add(new Option('Kladde / automatisk','draft'));
                if(data.workflow_active!==true){if(data.has_customer)select.add(new Option('Faktura','invoice'));(data.prepaid_cards||[]).forEach(c=>select.add(new Option('Klippekort '+(c.card_number||c.id),'card_'+c.id)));(data.agreements||[]).forEach(a=>select.add(new Option('Fastpris '+(a.agreement_number||a.id),'fpa_'+a.id)));select.add(new Option('Intern tid','internal'));select.add(new Option('Ikke fakturerbar','non_billable'));}
                const hint=document.createElement('div');hint.className='form-text';hint.textContent=data.workflow_active?'Afregningen vælges af workflows. Brug afregningsbeslutningen nedenfor for en begrundet ændring.':'Manuel afregning kan kun vælges her i Tidsregistrering.';
                host.append(label,select,hint);anchor.closest('.row')?.append(host);
            }
        } catch(error){byId('v5BillingHint').textContent='Tid kan stadig registreres som kladde. Afregningsmuligheder kunne ikke hentes.';}
    }
    if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',loadBillingOptions,{once:true});else loadBillingOptions();
    const deferredInput = byId('topbarDeferredInput');
    const deadlineInput = byId('topbarDeadlineInput');
    function syncDateLimits() {
        if (deadlineInput.value) deferredInput.max = deadlineInput.value;
        else deferredInput.removeAttribute('max');
        if (deferredInput.value) deadlineInput.min = deferredInput.value;
        else deadlineInput.removeAttribute('min');
    }
    [deferredInput, deadlineInput].forEach(input => input.addEventListener('change', event => {
        if (deferredInput.value && deadlineInput.value && deferredInput.value > deadlineInput.value) {
            event.stopImmediatePropagation();
            input.value = input.defaultValue;
            showCaseFeedback('Udsat må ikke ligge efter deadline', 'danger');
        }
        syncDateLimits();
    }, true));
    syncDateLimits();
    const board = document.createElement('div');
    board.className = 'v5-board';
    const center = document.createElement('main');
    const modules = document.createElement('aside');
    modules.className = 'v5-case-modules';
    modules.setAttribute('aria-label', 'Todo, filer og moduler');
    const tabs = byId('caseTabs');
    tabs.before(board);
    board.append(center, modules);
    const widgets = [...shell.querySelectorAll('.case-v4-widget-dashboard .row > div > .card')];
    // Move the original controls into hero menus: handlers, IDs and values survive.
    const factsMenu = document.createElement('nav');
    factsMenu.className = 'v5-hero-facts-menu';
    factsMenu.setAttribute('aria-label', 'Kontakt, tildeling og klassifikation');
    [[3, 'Kontakt', 'person-vcard'], [1, 'Tildeling', 'people'], [0, 'Klassifikation', 'tags']].forEach(([index, label, icon]) => {
        const card = widgets[index];
        if (!card) return;
        const dropdown = document.createElement('div');
        dropdown.className = 'dropdown';
        const button = document.createElement('button');
        button.type = 'button';
        button.id = `v5HeroFacts${index}`;
        button.className = 'v5-hero-facts-button dropdown-toggle';
        button.dataset.bsToggle = 'dropdown';
        button.dataset.bsAutoClose = 'outside';
        button.setAttribute('aria-expanded', 'false');
        button.setAttribute('aria-controls', `v5HeroFactsPanel${index}`);
        button.innerHTML = `<i class="bi bi-${icon}" aria-hidden="true"></i><span>${label}</span>`;
        const panel = document.createElement('div');
        panel.id = `v5HeroFactsPanel${index}`;
        panel.className = 'dropdown-menu v5-hero-facts-panel v5-case-facts';
        panel.setAttribute('aria-labelledby', button.id);
        panel.append(card);
        dropdown.append(button, panel);
        factsMenu.append(dropdown);
        // Open secondary dialogs without leaving this popup above their backdrop.
        panel.addEventListener('click', event => {
            const target = event.target.closest('button, a');
            if (target && !target.matches('[data-bs-toggle="dropdown"]')) {
                bootstrap.Dropdown.getOrCreateInstance(button).hide();
            }
        });
    });
    shell.querySelector('.case-header-copy').append(factsMenu);
    const anyDeskButton = document.createElement('button');
    anyDeskButton.id = 'v5AnyDeskOpenButton';
    anyDeskButton.type = 'button';
    anyDeskButton.className = 'v5-anydesk-button';
    anyDeskButton.title = 'Forbind med AnyDesk';
    anyDeskButton.innerHTML = '<i class="bi bi-display" aria-hidden="true"></i><span>AnyDesk</span>';
    anyDeskButton.addEventListener('click', () => window.openCaseAnyDeskModal());
    shell.querySelector('.case-header-identity')?.append(anyDeskButton);
    const heroStatus = document.createElement('div');
    heroStatus.className = 'v5-hero-status';
    ['topbarStatusSelect', 'topbarPrioritySelect'].forEach(id => {
        const row = byId(id)?.parentElement;
        if (row) heroStatus.append(row);
    });
    shell.querySelector('.case-header-main').insertBefore(heroStatus, shell.querySelector('.case-header-todo'));
    const heroTodo = shell.querySelector('.case-header-todo');
    if (heroTodo) {
        const addTodo = document.createElement('button');
        addTodo.type = 'button';
        addTodo.className = 'v5-hero-add-todo';
        addTodo.title = 'Opret todo på sagen';
        addTodo.setAttribute('aria-label', 'Opret todo på sagen');
        addTodo.innerHTML = '<i class="bi bi-plus-lg" aria-hidden="true"></i>';
        addTodo.addEventListener('click', () => window.openRelTodoModal(config.caseId, byId('sag-titel-text')?.textContent.trim() || ''));
        heroTodo.append(addTodo);
    }
    const timeline = byId('topbarStartDateInput')?.closest('.card');
    if (timeline) {
        timeline.classList.add('v5-hero-timeline');
        shell.querySelector('.case-header-main').append(timeline);
    }
    center.append(tabs, byId('timeActiveBanner'), byId('caseTabsContent'));
    // Normalize legacy closing tags: browsers can parse later panes outside
    // their tab-content. Every V5 pane belongs to the same center column.
    tabs.querySelectorAll('[data-bs-target]').forEach(button => {
        const pane = document.querySelector(button.getAttribute('data-bs-target'));
        if (pane && pane.parentElement !== byId('caseTabsContent')) byId('caseTabsContent').append(pane);
    });
    const planner = byId('planner');
    if (planner) { planner.hidden = true; planner.style.setProperty('display', 'none', 'important'); }
    byId('planner-tab')?.closest('.nav-item')?.remove();
    // Keep planner markup for existing dialogs, but never expose its pane in V5.
    if (new URLSearchParams(location.search).get('tab') === 'planner') {
        const url = new URL(location.href);
        url.searchParams.set('tab', 'details');
        history.replaceState(null, '', url);
    }
    const details = byId('details');
    const left = byId('case-left-column');
    const right = byId('case-right-column');
    const detailsRow = document.createElement('div');
    detailsRow.className = 'case-v4-details-columns';
    details.prepend(detailsRow);
    detailsRow.append(left);
    modules.append(right);
    // Keep the existing call action and data; give the narrow sidebar a list layout.
    byId('caseCallHistoryRows')?.querySelectorAll('tr').forEach(row => {
        const cells = row.querySelectorAll('td');
        const callButton = cells[2]?.querySelector('button');
        if (callButton) {
            callButton.title = `Ring til ${cells[2].querySelector('span')?.textContent.trim() || 'nummeret'}`;
            callButton.setAttribute('aria-label', callButton.title);
            callButton.innerHTML = '<i class="bi bi-telephone-outbound" aria-hidden="true"></i>';
        }
        if (cells[1]) {
            const outgoing = cells[1].textContent.trim() === 'Udgående';
            const icon = document.createElement('i');
            icon.className = `bi bi-arrow-${outgoing ? 'up-right' : 'down-left'}`;
            icon.setAttribute('aria-hidden', 'true');
            cells[1].prepend(icon);
        }
    });
    const rightGrid = right.querySelector('.right-modules-grid');
    const tagsCard = rightGrid?.querySelector('[data-module="tags"]');
    if (tagsCard) {
        rightGrid.prepend(tagsCard);
        tagsCard.classList.remove('d-none');
        tagsCard.style.setProperty('display', 'flex', 'important');
    }
    ['todo-steps', 'files', 'hardware', 'time'].reverse().forEach(key => {
        const card = shell.querySelector(`.right-module-card[data-module="${key}"]`);
        if (card) rightGrid.prepend(card);
    });
    const relations = shell.querySelector('.right-module-card[data-module="relations"]');
    if (relations) {
        relations.classList.add('v5-center-relations');
        const commentsCard = byId('comment-form').closest('.left-module-card');
        commentsCard.after(relations);
    }
    // V4 refreshes this hook after async module loads. Keep its columns in V5.
    window.ensureCaseDetailsColumns = () => detailsRow;
    window.updateRightColumnVisibility = () => right.classList.remove('d-none');
    const originalApplyLayout = window.applyViewLayout;
    window.applyViewLayout = function (...args) {
        originalApplyLayout(...args);
        right.classList.remove('d-none');
    };

    const actions = [
        ['assign', 'Tildel sag', 'person-check', null],
        ['reply_customer', 'Svar kunden', 'envelope', 'commentActionReplyCustomer'],
        ['log_time', 'Registrer tid', 'clock-history', 'commentActionLogTime'],
        ['solution', 'Gem som løsning', 'lightbulb', 'commentActionSolution'],
        ['close_case', 'Luk sag', 'check-circle', 'commentActionCloseCase'],
        ['await_customer', 'Afventer kunde', 'hourglass-split', 'commentActionAwaitCustomer'],
        ['append_case', 'Tilføj til sag', 'file-earmark-plus', 'commentActionAppendCase']
    ];
    const form = byId('comment-form');
    const legacyChips = form.querySelector('.comment-action-chips');
    legacyChips.before(byId('caseV5ComposerTools').content.cloneNode(true));
    byId('v5SelectedActions').parentElement.append(form.querySelector('button[type="submit"]'));
    // Keep action selection and its fields together above the comment editor.
    const composer = form.querySelector('.comment-composer');
    const actionToolbar = byId('v5ActionToggle').parentElement;
    const submitButton = form.querySelector('button[type="submit"]');
    const submitRow = document.createElement('div');
    submitRow.className = 'v5-submit-row';
    submitRow.append(submitButton);
    composer.before(actionToolbar, byId('v5ActionMenu'), byId('v5AssignmentFields'), byId('commentQuickTimeRow'));
    composer.after(submitRow);
    byId('v5ActionToggle').innerHTML = '<i class="bi bi-plus-lg" aria-hidden="true"></i><span>Handling</span>';

    const commandFilterLabel = document.createElement('label');
    commandFilterLabel.className = 'comment-category-check';
    commandFilterLabel.title = 'Vis eller skjul /-kommandoer';
    commandFilterLabel.innerHTML = '<input type="checkbox" id="commentShowCommands" checked aria-label="Vis /-kommandoer"><i class="bi bi-slash-lg" aria-hidden="true"></i><span id="commentSourceCountCommands" class="count">0</span>';
    shell.querySelector('.comment-toolbar').append(commandFilterLabel);
    const originalCommentFilters = window.applyCommentFilters;
    window.applyCommentFilters = function (...args) {
        originalCommentFilters(...args);
        const items = [...byId('comments-container').querySelectorAll('.comment-item')];
        const commandItems = items.filter(item => {
            const raw = item.querySelector('.comment-body')?.dataset.commentRaw || '';
            return /^\s*\/\/?(?:tid|tildel|forventet|undersag|mig|todo|afventer|løsning|deadline|udsat|fil|hjælp|timer|relation|prioritet|gruppe|mail|note)(?:\s|$)/im.test(raw)
                || /^(?:deadline|defer|priority):/i.test(raw.trim());
        });
        byId('commentSourceCountCommands').textContent = String(commandItems.length);
        if (!byId('commentShowCommands').checked) commandItems.forEach(item => { item.hidden = true; });
        const count = items.filter(item => !item.hidden).length;
        byId('commentsVisibleCountBadge').textContent = `${count}/${items.length} vises`;
        byId('commentFilterEmptyState')?.classList.toggle('d-none', count > 0 || items.length === 0);
    };
    byId('commentShowCommands').addEventListener('change', () => window.applyCommentFilters());
    window.applyCommentFilters();
    let assignSelected = false;
    let groupId = config.groupId;
    let userId = config.userId;
    let members = [];
    let memberRequest = 0;
    let membersLoading = false;
    const memberCache = new Map();
    const disabledBeforeLock = new Map();
    let busy = false;
    let pending = null;
    const feedback = (message, error = false) => {
        const el = byId('v5SubmitFeedback');
        el.textContent = message;
        el.classList.toggle('text-danger', error);
    };
    const selected = action => action[0] === 'assign' ? assignSelected : Boolean(byId(action[3])?.checked);
    function renderActions() {
        const host = byId('v5SelectedActions');
        host.replaceChildren();
        actions.forEach(action => {
            const active = selected(action);
            byId(`v5Option-${action[0]}`).setAttribute('aria-pressed', String(active));
            if (!active) return;
            const chip = document.createElement('button');
            chip.type = 'button';
            let label = action[1];
            if (action[0] === 'assign') {
                const target = members.find(member => member.user_id === userId)?.display_name
                    || config.groups.find(group => group.id === groupId)?.name || 'Vælg modtager';
                label = `Tildel: ${target}`;
            }
            if (action[0] === 'log_time') label = `Tid: ${byId('commentQuickTimeMinutes').value || '0'} min`;
            chip.textContent = `${label} ×`;
            chip.setAttribute('aria-label', `Fjern ${action[1]}`);
            chip.addEventListener('click', () => toggleAction(action));
            chip.disabled = busy || Boolean(pending);
            host.append(chip);
        });
        byId('v5AssignmentFields').hidden = !assignSelected;
        form.querySelector('button[type="submit"]').textContent = pending ? 'Fortsæt resterende handlinger' : assignSelected ? 'Gem og tildel' : actions.some(selected) ? 'Gem med handlinger' : 'Send';
        window.CaseCommandComposer?.updateSubmitLabel();
    }
    function toggleAction(action) {
        if (busy || pending) return;
        if (action[0] === 'assign') {
            assignSelected = !assignSelected;
            if (assignSelected) loadMembers();
        } else {
            const checkbox = byId(action[3]);
            checkbox.checked = !checkbox.checked;
            checkbox.dispatchEvent(new Event('change', {bubbles: true}));
        }
        renderActions();
        closeMenu();
    }
    actions.forEach(action => {
        const button = document.createElement('button');
        button.id = `v5Option-${action[0]}`;
        button.type = 'button';
        button.innerHTML = `<i class="bi bi-${action[2]} me-1"></i>`;
        button.append(document.createTextNode(action[1]));
        button.addEventListener('click', () => toggleAction(action));
        byId('v5ActionOptions').append(button);
        byId(action[3])?.addEventListener('change', renderActions);
    });
    const toggle = byId('v5ActionToggle');
    function closeMenu() { byId('v5ActionMenu').hidden = true; toggle.setAttribute('aria-expanded', 'false'); }
    toggle.addEventListener('click', () => {
        const menu = byId('v5ActionMenu');
        menu.hidden = !menu.hidden;
        toggle.setAttribute('aria-expanded', String(!menu.hidden));
    });
    document.addEventListener('click', event => {
        if (!byId('v5ActionMenu').contains(event.target) && !toggle.contains(event.target)) closeMenu();
    });
    form.addEventListener('keydown', event => { if (event.key === 'Escape') { closeMenu(); toggle.focus(); } });
    function renderPicker(host, items, current, choose, search) {
        host.replaceChildren();
        const filtered = items.filter(item => item.name.toLocaleLowerCase('da').includes(search.toLocaleLowerCase('da')));
        filtered.forEach(item => {
            const button = document.createElement('button');
            button.type = 'button'; button.textContent = item.name;
            button.setAttribute('aria-pressed', String(item.id === current));
            button.disabled = busy || Boolean(pending);
            button.addEventListener('click', () => choose(item.id));
            host.append(button);
        });
        if (!filtered.length) host.textContent = 'Ingen match';
    }
    function renderGroups() {
        renderPicker(byId('v5GroupOptions'), config.groups, groupId, id => {
            groupId = id; userId = null; members = []; renderGroups(); loadMembers();
        }, byId('v5GroupSearch').value);
    }
    function employeeInitials(name) {
        const words = String(name || '').trim().split(/\s+/).filter(Boolean);
        return (words.length > 1 ? words[0][0] + words[words.length - 1][0] : (words[0] || '?').slice(0, 2)).toLocaleUpperCase('da');
    }
    function renderUsers() {
        const host = byId('v5UserOptions');
        host.replaceChildren();
        const query = byId('v5UserSearch').value.trim().toLocaleLowerCase('da');
        members.filter(member => `${member.display_name} ${employeeInitials(member.display_name)}`.toLocaleLowerCase('da').includes(query)).forEach(member => {
            const button = document.createElement('button');
            button.type = 'button';
            button.textContent = employeeInitials(member.display_name);
            button.title = member.display_name;
            button.setAttribute('aria-label', member.display_name);
            button.setAttribute('aria-pressed', String(member.user_id === userId));
            button.disabled = busy || Boolean(pending);
            button.addEventListener('click', () => {
                userId = member.user_id;
                // Keep the current group when possible; otherwise infer it from
                // the employee's membership without changing the API contract.
                groupId = member.group_ids.includes(groupId) ? groupId : member.group_ids[0];
                renderGroups(); renderUsers();
            });
            host.append(button);
        });
        if (!host.children.length) host.textContent = 'Ingen medarbejdere fundet';
        renderActions();
    }
    async function loadMembers() {
        const sequence = ++memberRequest;
        membersLoading = true;
        byId('v5UserSearch').disabled = true;
        byId('v5UserOptions').textContent = 'Henter medarbejdere…';
        try {
            const results = await Promise.all(config.groups.map(async group => {
                let data = memberCache.get(group.id);
                if (!data) {
                    const response = await fetch(`/api/v1/sag/${config.caseId}/assignments?group_id=${group.id}`, {credentials: 'include'});
                    if (!response.ok) throw new Error('Kunne ikke hente medarbejdere. Åbn Tildel igen for at prøve igen.');
                    data = await response.json();
                    memberCache.set(group.id, data);
                }
                return {groupId: group.id, members: data.members || []};
            }));
            if (sequence !== memberRequest) return;
            const employees = new Map();
            results.forEach(result => result.members.forEach(member => {
                if (!employees.has(member.user_id)) employees.set(member.user_id, {...member, group_ids: []});
                employees.get(member.user_id).group_ids.push(result.groupId);
            }));
            members = [...employees.values()].sort((a,b) => a.display_name.localeCompare(b.display_name, 'da'));
            if (!members.some(member => member.user_id === userId)) userId = null;
            byId('v5UserSearch').disabled = false;
            renderUsers(); feedback('');
        } catch (error) {
            if (sequence === memberRequest) { byId('v5UserOptions').textContent = ''; feedback(error.message, true); }
        } finally { if (sequence === memberRequest) membersLoading = false; }
    }
    byId('v5GroupSearch').addEventListener('input', renderGroups);
    byId('v5UserSearch').addEventListener('input', renderUsers);
    byId('commentQuickTimeMinutes').addEventListener('input', renderActions);
    form.querySelector('textarea[name="indhold"]').addEventListener('input', renderActions);
    function lock(locked) {
        form.querySelectorAll('input, textarea, select, button').forEach(el => {
            if (locked) {
                if (!disabledBeforeLock.has(el)) disabledBeforeLock.set(el, el.disabled);
                el.disabled = true;
            } else if (disabledBeforeLock.has(el)) {
                el.disabled = disabledBeforeLock.get(el);
                disabledBeforeLock.delete(el);
            }
        });
        // Failed submissions remain locked except for retry, avoiding an altered
        // draft being attached to an already persisted comment.
        if (pending && !busy) {
            form.querySelector('button[type="submit"]').disabled = false;
            if (pending.remaining.includes('log_time')) {
                byId('commentQuickTimeRow').querySelectorAll('input, select').forEach(el => { el.disabled = false; });
                toggleCommentQuickTimeStartField();
            }
        }
    }
    form.querySelector('textarea[name="indhold"]').addEventListener('keydown', event => {
        if (event.key !== 'Enter' || (!event.metaKey && !event.ctrlKey) || event.isComposing) return;
        event.preventDefault();
        event.stopImmediatePropagation();
        const submit = form.querySelector('button[type="submit"]');
        if (!busy && submit && !submit.disabled) form.requestSubmit(submit);
    });
    form.querySelector('button[type="submit"]').title = 'Gem kommentar · Cmd+Enter / Ctrl+Enter';
    form.removeAttribute('onsubmit');
    form.addEventListener('submit', async event => {
        event.preventDefault();
        if (busy) return;
        const containsCommand = /^\s*\//m.test(form.querySelector('textarea[name="indhold"]').value);
        if (containsCommand && !window.CaseCommandComposer) {
            feedback('Kommandofeltet indlæses. Vent et øjeblik og prøv igen.', true);
            return;
        }
        if (window.CaseCommandComposer?.hasCommands()) {
            if (pending || assignSelected || getSelectedCommentActions().length) {
                feedback('Fjern handlingerne fra plusmenuen, eller skriv dem som kommandoer, før du gemmer.', true);
                return;
            }
            busy = true; lock(true); feedback('Gemmer kommentar og kommandoer…');
            try {
                const result = await window.CaseCommandComposer.submit();
                feedback(result.message);
                window.dispatchEvent(new CustomEvent('bmc:timer-state-changed'));
                if (result.reload) reloadCasePreservingContext();
                else {
                    if (typeof loadTimeTrackingTab === 'function') loadTimeTrackingTab();
                    if (typeof loadTodoSteps === 'function') loadTodoSteps();
                }
            } catch (error) { feedback(error.message, true); }
            finally {
                busy = false; lock(false); renderActions();
                window.CaseCommandComposer.updateSubmitLabel();
            }
            return;
        }
        const textarea = form.querySelector('textarea[name="indhold"]');
        const content = textarea.value.trim();
        const reason = byId('v5AssignmentReason').value.trim();
        const chosen = getSelectedCommentActions();
        if (!pending) {
            if (!content) { feedback('Skriv en kommentar først.', true); return; }
            if (assignSelected && (!groupId || !reason || membersLoading || byId('v5UserSearch').disabled)) {
                feedback('Vælg gruppe, vent på medarbejderlisten og skriv en begrundelse.', true); return;
            }
            if (chosen.includes('log_time') && byId('v5QuickBilling').dataset.billingReady !== 'true') { feedback('Afregningsmuligheder er ikke indlæst. Genindlæs siden.', true); return; }
            if (chosen.includes('log_time') && (Number(byId('commentQuickTimeMinutes').value) <= 0 || !byId('commentQuickTimeDate').value)) {
                feedback('Vælg dato og et positivt minuttal før tidsregistrering.', true); return;
            }
            if (chosen.includes('close_case')) {
                busy = true; lock(true);
                let confirmed = false;
                try { confirmed = await confirmCaseClosureIfNeeded({timeWillBeRegistered: chosen.includes('log_time')}); }
                finally { busy = false; lock(false); }
                if (!confirmed) return;
            }
        }
        busy = true; lock(true); feedback('Gemmer…');
        try {
            if (!pending) {
                const url = `/api/v1/sag/${config.caseId}/${assignSelected ? 'assign-with-reason' : 'kommentarer'}`;
                const internal = assignSelected || chosen.includes('solution') || chosen.includes('log_time');
                const body = assignSelected ? {group_id: groupId, primary_user_id: userId, reason, content} : {indhold: content, er_intern: internal};
                const response = await fetch(url, {method: 'POST', credentials: 'include', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(body)});
                const result = await response.json();
                if (!response.ok) throw new Error(typeof result.detail === 'string' ? result.detail : 'Kunne ikke gemme kommentaren.');
                const comment = assignSelected ? result.comment : result;
                pending = {content, remaining: chosen.slice(), assigned: assignSelected};
                let visibleContent = comment.indhold || content;
                if (assignSelected) {
                    const decoder = document.createElement('textarea');
                    decoder.innerHTML = visibleContent;
                    visibleContent = decoder.value;
                }
                injectCreatedComment(comment, visibleContent, internal);
            }
            // Finish one action at a time. Retry never creates another comment
            // or repeats actions that already returned successfully.
            while (pending.remaining.length) {
                await applyCommentActionPrefill(pending.remaining[0], pending.content);
                pending.remaining.shift();
            }
            pending = null;
            textarea.value = ''; byId('v5AssignmentReason').value = '';
            assignSelected = false; clearSelectedCommentActions();
            feedback('Kommentar og handlinger gemt.');
            window.CaseCommandComposer?.reset();
            reloadCasePreservingContext();
        } catch (error) {
            feedback(pending ? `Kommentaren er gemt. En handling mangler: ${error.message}. Brug Fortsæt for at prøve den igen.` : error.message, true);
        } finally { busy = false; lock(Boolean(pending)); renderActions(); }
    });
    renderGroups(); renderActions();
    applyCommentFilters();
})();