import { h, PageHeader, Badge, StatusDot, Empty, Card, esc, enc, att_esc, $val, apiFetch, toast, dismissToast, openModal, closeModal, formModal, definePage, hComp, connect, reactive, requestUpdate, Link, createRouter, ToastContainer, render, parseZones } from '/static/hoover/index.js';

function issueCertModal(state) {
    openModal((inner, idx) => {
        formModal(inner, 'Issue Certificate',
            [
                { label: 'Domain', id: 'ic-domain', placeholder: 'example.com' },
                { label: 'Email (optional)', id: 'ic-email', placeholder: 'you@example.com' },
            ],
            [
                { label: 'Cancel', cls: 'btn-outline', action: 'c', handler: () => closeModal(idx) },
                {
                    label: 'Issue', cls: 'btn-primary', action: 's', handler: async () => {
                        const domain = ($val('ic-domain') || '').trim();
                        if (!domain) { toast('Domain is required', 'error'); return; }
                        const body = {
                            domain,
                            email: ($val('ic-email') || '').trim() || undefined,
                        };
                        const resp = await apiFetch('/api/certs/issue/start', {
                            method: 'POST',
                            headers: { 'Content-Type': 'application/json' },
                            body: JSON.stringify(body),
                        });
                        if (resp.ok) {
                            toast('Issuance started for ' + domain, 'success');
                            closeModal(idx);
                            const rid = resp.data?.request_id;
                            if (rid) pollCertIssue(rid, state);
                        } else {
                            toast(resp.error || 'Failed', 'error');
                        }
                    },
                },
            ],
        );
    });
}

async function pollCertIssue(rid, state) {
    let done = false;
    const timer = setInterval(async () => {
        if (done) return clearInterval(timer);
        const r = await apiFetch('/api/certs/issue/' + enc(rid));
        if (r.ok && r.data) {
            if (r.data.status === 'completed') {
                done = true;
                clearInterval(timer);
                toast('Certificate issued for ' + (r.data.domain || rid), 'success');
                await load(state);
            } else if (r.data.status === 'failed') {
                done = true;
                clearInterval(timer);
                toast('Issuance failed: ' + (r.data.error || 'unknown'), 'error');
            }
        }
    }, 2000);
}

async function load(state) {
    try {
        const r = await apiFetch('/api/certs/list');
        if (r.ok) state.certs = r.data || [];
        else state.error = r.error;
    } catch (e) {
        state.error = String(e);
    }
    state.loading = false;
}

export default definePage({
    init() {
        return { certs: [], loading: true, error: null };
    },
    subscribe: ['acme'],
    load,
    render(state) {
        if (state.loading) {
            return [
                PageHeader({ title: 'Certificates' }),
                h('div', { class: 'card', key: 'loading' },
                    h('div', { class: 'card-body loading' }, 'Loading...'),
                ),
            ];
        }

        if (state.error) {
            return [
                PageHeader({ title: 'Certificates' }),
                h('div', { class: 'card', key: 'error' },
                    h('div', { class: 'card-body error-msg' }, state.error),
                ),
            ];
        }

        const rows = state.certs.map(c => {
            const days = c.days_remaining;
            let badge;
            if (c.expired || (days !== undefined && days <= 0)) {
                badge = Badge({ text: 'Expired', variant: 'danger' });
            } else if (days !== undefined && days <= 30) {
                badge = Badge({ text: days + 'd left', variant: 'warning' });
            } else {
                badge = Badge({ text: days !== undefined ? days + 'd left' : 'N/A', variant: 'success' });
            }

            return h('tr', { key: c.domain },
                h('td', null, h('strong', null, esc(c.domain || 'unknown'))),
                h('td', { class: 'text-sm' }, esc(c.issuer || '-')),
                h('td', null, esc(c.expiry || 'N/A')),
                h('td', null, badge),
                h('td', null,
                    h('button', { class: 'btn btn-sm btn-outline', style: 'margin-right:4px;',
                        'on:click': async () => {
                            const resp = await apiFetch('/api/certs/' + enc(c.domain) + '/renew', { method: 'POST' });
                            if (resp.ok) toast('Renewal started for ' + c.domain, 'success');
                            else toast(resp.error || 'Failed', 'error');
                        }}, 'Renew'),
                    h('button', { class: 'btn btn-sm btn-danger',
                        'on:click': async () => {
                            if (!confirm('Remove certificate for ' + c.domain + '?')) return;
                            const resp = await apiFetch('/api/certs/' + enc(c.domain), { method: 'DELETE' });
                            if (resp.ok) {
                                toast('Certificate removed', 'success');
                                await load(state);
                            } else {
                                toast(resp.error || 'Failed', 'error');
                            }
                        }}, 'Remove'),
                ),
            );
        });

        return [
            PageHeader({
                title: 'Certificates',
                subtitle: 'ACME certificate management',
                actions: h('button', { class: 'btn btn-primary',
                    'on:click': () => issueCertModal(state) }, 'Issue Certificate'),
            }),
            rows.length
                ? h('div', { class: 'card' }, h('table', { class: 'table' },
                    h('thead', null,
                        h('tr', null,
                            h('th', null, 'Domain'),
                            h('th', null, 'Issuer'),
                            h('th', null, 'Expiry'),
                            h('th', null, 'Status'),
                            h('th', { style: 'width:120px;' }, 'Actions'),
                        ),
                    ),
                    h('tbody', null, ...rows),
                ))
                : Empty({ text: 'No certificates found. Issue a certificate to get started.' }),
        ];
    },
});