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 addRuleModal(zones, state) {
    openModal((inner, idx) => {
        formModal(inner, 'Add Rich Rule',
            [
                { label: 'Zone', id: 'rule-zone', tag: 'select', options: zones.map(z => [z, z === zones[0]]) },
                { label: 'Rule (XML)', id: 'rule-text', tag: 'textarea', placeholder: 'rule family="ipv4" source address="192.168.1.0/24" accept' },
            ],
            [
                { label: 'Cancel', cls: 'btn-outline', action: 'c', handler: () => closeModal(idx) },
                {
                    label: 'Add', cls: 'btn-primary', action: 's', handler: async () => {
                        const zone = $val('rule-zone');
                        const rule = ($val('rule-text') || '').trim();
                        if (!zone || !rule) { toast('Zone and rule are required', 'error'); return; }
                        const r = await apiFetch('/api/firewall/rich-rules', {
                            method: 'POST',
                            headers: { 'Content-Type': 'application/json' },
                            body: JSON.stringify({ zone, rule }),
                        });
                        if (r.ok) {
                            toast('Rule added', 'success');
                            closeModal(idx);
                            await load(state);
                        } else {
                            toast(r.error || 'Failed', 'error');
                        }
                    },
                },
            ],
        );
    });
}

async function load(state, abortController, entry) {
    if (Object.keys(state.config || {}).length) state.refreshing = true;
    else state.loading = true;
    try {
        const myId = entry ? entry.requestId : 0;
        const sig = abortController?.signal;
        const r = await apiFetch('/api/firewall/config', { signal: sig });
        if (abortController?.signal.aborted || (entry && entry.requestId !== myId)) return;
        if (r.ok) state.config = r.data || {};
        else state.error = r.error;
        const zr = await apiFetch('/api/firewall/zones', { signal: sig });
        if (abortController?.signal.aborted || (entry && entry.requestId !== myId)) return;
        if (zr.ok) state.zones = Object.keys(zr.data?.active || {});
    } catch (e) {
        if (abortController?.signal.aborted) return;
        state.error = String(e);
    }
    state.loading = false;
    state.refreshing = false;
}

export default definePage({
    init() {
        return { config: {}, loading: true, refreshing: false, error: null, zones: [] };
    },
    subscribe: ['firewall'],
    load,
    render(state) {
        if (state.loading && !state.refreshing) {
            return [
                PageHeader({ title: 'Rules', subtitle: 'Firewall rich rules' }),
                h('div', { class: 'card', key: 'loading' },
                    h('div', { class: 'card-body loading' }, state.refreshing ? 'Refreshing...' : 'Loading...'),
                ),
            ];
        }

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

        const cfg = state.config || {};
        const zoneData = cfg.zones || {};
        const zoneRules = {};
        Object.entries(zoneData).forEach(([zname, zcfg]) => {
            const rr = zcfg.rich_rules || [];
            if (rr.length) zoneRules[zname] = rr;
        });

        const cards = Object.entries(zoneRules).map(([zone, rules]) => {
            return h('div', { class: 'card', key: zone },
                h('div', { class: 'card-header' }, 'Zone: ' + esc(zone)),
                h('div', { class: 'card-body' },
                    h('table', { class: 'table' },
                        h('thead', null,
                            h('tr', null,
                                h('th', null, '#'),
                                h('th', null, 'Rule'),
                                h('th', { style: 'width:80px;' }, 'Action'),
                            ),
                        ),
                        h('tbody', null,
                            (Array.isArray(rules) ? rules : []).map((entry, i) => {
                                const ruleId = typeof entry === 'object' ? entry.id : null;
                                const ruleText = typeof entry === 'object' ? (entry.rule || '') : String(entry);
                                return h('tr', { key: i },
                                    h('td', { class: 'text-muted' }, i + 1),
                                    h('td', { style: 'font-family:monospace;font-size:12px;word-break:break-all;' }, esc(ruleText)),
                                    h('td', null,
                                        h('button', { class: 'btn btn-sm btn-danger',
                                            'on:click': async () => {
                                                if (!confirm('Remove rule: ' + ruleText.substring(0, 40) + '...?')) return;
                                                const r = await apiFetch('/api/firewall/rich-rules/' + enc(zone) + '/' + enc(ruleId || ''), { method: 'DELETE' });
                                                if (r.ok) {
                                                    toast('Rule removed', 'success');
                                                    await load(state);
                                                } else {
                                                    toast(r.error || 'Failed', 'error');
                                                }
                                            }}, 'Remove'),
                                    ),
                                );
                            }),
                        ),
                    ),
                ),
            );
        });

        return [
            PageHeader({
                title: 'Rules',
                subtitle: 'Firewall rich rules',
                actions: h('button', { class: 'btn btn-primary',
                    'on:click': () => addRuleModal(state.zones, state) }, 'Add Rule'),
            }),
            ...(cards.length ? cards : [Empty({ text: 'No rich rules configured.' })]),
        ];
    },
});