import { h, PageHeader, Empty, Card, ConfirmDelete, Table, renderGuard, esc, enc, $val, apiFetch, toast, definePage, refactorLoad, MonoText, QuickModal } from '/static/hoover/index.js?v=6';

const addRule = QuickModal({
    title: 'Add Rich Rule',
    fields: (d) => [
        { label: 'Zone', id: 'rule-zone', tag: 'select', options: d.zones },
        { label: 'Rule (XML)', id: 'rule-text', tag: 'textarea', placeholder: 'rule family="ipv4" source address="192.168.1.0/24" accept' },
    ],
    submit: {
        url: '/api/firewall/rich-rules',
        body: (s) => ({ zone: $val('rule-zone'), rule: ($val('rule-text') || '').trim() }),
        validate: (b) => !b.zone || !b.rule ? 'Zone and rule are required' : null,
        successMsg: 'Rule added',
    },
    reload: (s) => load(s._s),
});

async function load(state, abortController, entry) {
    await refactorLoad(state,
        s => Object.keys(s.config || {}).length,
        async (s, sig, isAborted) => {
            const r = await apiFetch('/api/firewall/config', { signal: sig });
            if (isAborted()) return;
            if (r.ok) s.config = r.data || {};
            else s.error = r.error;
            const zr = await apiFetch('/api/firewall/zones', { signal: sig });
            if (isAborted()) return;
            if (zr.ok) s.zones = Object.keys(zr.data?.active || {});
            else if (!s.error) s.error = zr.error;
        },
        { entry, abortController },
    );
}

export default definePage({
    init() {
        return { config: {}, zones: [] };
    },
    subscribe: ['firewall'],
    load,
    render(state) {
        const guard = renderGuard(state, 'Rules', 'Firewall rich rules', state.config);
        if (guard) return guard;

        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 Card({
                header: 'Zone: ' + esc(zone),
                key: zone,
                children: [Table({
                    columns: ['#', 'Rule', 'Action'],
                    rows: (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', { class: 'mono-text td-fullwidth' }, MonoText({ text: ruleText })),
                            h('td', null,
                                ConfirmDelete({
                                    url: '/api/firewall/rich-rules/' + enc(zone) + '/' + enc(ruleId || ''),
                                    message: 'Remove rule: ' + ruleText.substring(0, 40) + '...?',
                                    success: 'Rule removed',
                                    reload: () => load(state),
                                }),
                            ),
                        );
                    }),
                    emptyText: 'No rules',
                    wrapCard: false,
                })],
            });
        });

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