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 addDomainModal(state) {
    openModal((inner, idx) => {
        formModal(inner, 'Add Proxy Domain',
            [
                { label: 'Domain', id: 'p-domain', placeholder: 'example.com' },
                { label: 'Backend Host', id: 'p-host', placeholder: '192.168.1.10' },
                { label: 'Backend Port', id: 'p-port', type: 'number', placeholder: '8080' },
                { label: 'Protocol', id: 'p-proto', placeholder: 'http or https' },
                { label: 'Cert (optional)', id: 'p-cert', placeholder: 'acme' },
            ],
            [
                { label: 'Cancel', cls: 'btn-outline', action: 'c', handler: () => closeModal(idx) },
                {
                    label: 'Add', cls: 'btn-primary', action: 's', handler: async () => {
                        const body = {
                            domain: ($val('p-domain') || '').trim(),
                            backend_host: ($val('p-host') || '').trim(),
                            backend_port: parseInt($val('p-port')),
                            backend_proto: ($val('p-proto') || 'http').trim() || 'http',
                            cert: ($val('p-cert') || '').trim() || undefined,
                        };
                        if (!body.domain || !body.backend_host || !body.backend_port) {
                            toast('Domain, host, and port are required', 'error');
                            return;
                        }
                        const resp = await apiFetch('/api/proxy/domains', {
                            method: 'POST',
                            headers: { 'Content-Type': 'application/json' },
                            body: JSON.stringify(body),
                        });
                        if (resp.ok) {
                            toast('Domain added', 'success');
                            closeModal(idx);
                            await load(state);
                        } else {
                            toast(resp.error || 'Failed', 'error');
                        }
                    },
                },
            ],
        );
    });
}

function editDomainModal(domain, state) {
    openModal((inner, idx) => {
        formModal(inner, 'Edit: ' + domain.domain,
            [
                { label: 'Backend Host', id: 'pe-host', value: domain.backend_host || '' },
                { label: 'Backend Port', id: 'pe-port', type: 'number', value: domain.backend_port || '' },
                { label: 'Protocol', id: 'pe-proto', value: domain.backend_proto || domain.protocol || 'http' },
                { label: 'Cert (optional)', id: 'pe-cert', value: domain.cert || '' },
            ],
            [
                { label: 'Cancel', cls: 'btn-outline', action: 'c', handler: () => closeModal(idx) },
                {
                    label: 'Save', cls: 'btn-primary', action: 's', handler: async () => {
                        const body = {
                            backend_host: ($val('pe-host') || '').trim(),
                            backend_port: parseInt($val('pe-port')),
                            backend_proto: ($val('pe-proto') || 'http').trim(),
                            cert: ($val('pe-cert') || '').trim() || undefined,
                        };
                        const resp = await apiFetch('/api/proxy/domains/' + enc(domain.domain), {
                            method: 'PUT',
                            headers: { 'Content-Type': 'application/json' },
                            body: JSON.stringify(body),
                        });
                        if (resp.ok) {
                            toast('Domain updated', 'success');
                            closeModal(idx);
                            await load(state);
                        } else {
                            toast(resp.error || 'Failed', 'error');
                        }
                    },
                },
            ],
        );
    });
}

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

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

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

        const rows = state.domains.map(d => {
            let certBadge = Badge({ text: 'No cert', variant: 'info' });
            if (d.cert_status === 'valid' || d.cert_status === 'active') {
                certBadge = Badge({ text: 'Valid', variant: 'success' });
            } else if (d.cert_status === 'expired' || (d.days_remaining !== undefined && d.days_remaining <= 0)) {
                certBadge = Badge({ text: 'Expired', variant: 'danger' });
            } else if (d.days_remaining !== undefined && d.days_remaining <= 30) {
                certBadge = Badge({ text: d.days_remaining + 'd', variant: 'warning' });
            } else if (d.days_remaining !== undefined) {
                certBadge = Badge({ text: d.days_remaining + 'd', variant: 'success' });
            }

            return h('tr', { key: d.domain },
                h('td', null, h('strong', null, esc(d.domain))),
                h('td', null, esc(d.backend_host || '-')),
                h('td', null, d.backend_port || '-'),
                h('td', null, Badge({ text: d.backend_proto || d.protocol || 'http', variant: 'info' })),
                h('td', null, certBadge),
                h('td', null,
                    h('button', { class: 'btn btn-sm btn-outline', style: 'margin-right:4px;',
                        'on:click': () => editDomainModal(d, state) }, 'Edit'),
                    h('button', { class: 'btn btn-sm btn-danger',
                        'on:click': async () => {
                            if (!confirm('Remove proxy for ' + d.domain + '?')) return;
                            const r = await apiFetch('/api/proxy/domains/' + enc(d.domain), { method: 'DELETE' });
                            if (r.ok) {
                                toast('Domain removed', 'success');
                                await load(state);
                            } else {
                                toast(r.error || 'Failed', 'error');
                            }
                        }}, 'Delete'),
                ),
            );
        });

        const actions = h('div', { style: 'display:flex;gap:8px;' },
            h('button', { class: 'btn btn-primary', 'on:click': () => addDomainModal(state) }, 'Add Domain'),
            h('button', { class: 'btn btn-outline',
                'on:click': async () => {
                    const resp = await apiFetch('/api/proxy/apply', { method: 'POST' });
                    if (resp.ok) toast('Nginx applied & reloaded', 'success');
                    else toast(resp.error || 'Failed', 'error');
                }}, 'Apply'),
        );

        return [
            PageHeader({ title: 'Proxy', subtitle: 'Nginx reverse proxy', actions }),
            rows.length
                ? h('div', { class: 'card' }, h('table', { class: 'table' },
                    h('thead', null,
                        h('tr', null,
                            h('th', null, 'Domain'),
                            h('th', null, 'Backend Host'),
                            h('th', null, 'Port'),
                            h('th', null, 'Proto'),
                            h('th', null, 'Cert'),
                            h('th', { style: 'width:140px;' }, 'Actions'),
                        ),
                    ),
                    h('tbody', null, ...rows),
                ))
                : Empty({ text: 'No proxy domains configured. Add a domain to start terminating SSL.' }),
        ];
    },
});