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

async function changeZone(name, zone, state) {
    const r = await apiFetch('/api/firewall/zones/' + enc(zone) + '/interfaces', {
        method: 'POST',
        body: { interfaces: [name] },
    });
    if (r.ok) {
        toast(name + ' \u2192 ' + zone, 'success');
        await load(state);
    } else {
        toast(r.error || 'Failed', 'error');
    }
}

const cfgModalFn = QuickModal({
    title: (d) => 'Config: ' + d.name,
    fields: (d) => {
        const cfg = d.config || {};
        return [
            { label: 'Addresses (comma-separated)', id: 'cfg-addrs', value: (cfg.addresses || []).join(', '), placeholder: '192.168.1.1/24' },
            { label: 'Gateway', id: 'cfg-gw', value: cfg.gateway || '' },
            { label: 'DNS (comma-separated)', id: 'cfg-dns', value: (cfg.dns || []).join(', '), placeholder: '1.1.1.1, 8.8.8.8' },
        ];
    },
    submit: {
        url: (d) => '/api/network/interfaces/' + enc(d.name),
        body: () => ({
            addresses: ($val('cfg-addrs') || '').split(',').map(s => s.trim()).filter(Boolean),
            gateway: ($val('cfg-gw') || '').trim() || undefined,
            dns: ($val('cfg-dns') || '').split(',').map(s => s.trim()).filter(Boolean),
        }),
        successMsg: 'Config saved',
    },
    reload: (s) => load(s),
});

async function load(state, abortController, entry) {
    await refactorLoad(state,
        s => s.ifaces?.length,
        async (s, sig, isAborted) => {
            const [fw, net] = await Promise.all([
                apiFetch('/api/firewall/zones', { signal: sig }),
                apiFetch('/api/network/interfaces', { signal: sig }),
            ]);
            if (isAborted()) return;
            if (fw.ok) s.zones = fw.data?.available || [];
            else s.error = fw.error;
            if (net.ok) {
                const ifaceZone = {};
                for (const [zoneName, ifaces] of Object.entries(fw.data?.active || {})) {
                    for (const name of (ifaces || [])) ifaceZone[name] = zoneName;
                }
                const ifacesObj = net.data?.interfaces || {};
                s.ifaces = Object.entries(ifacesObj).map(([name, entry]) => ({
                    name,
                    mac: entry?.runtime?.mac || null,
                    ips: [...(entry?.config?.addresses || []), ...(entry?.runtime?.addresses || [])],
                    state: (entry?.runtime?.state || '').startsWith('routable') || (entry?.runtime?.state || '').startsWith('carrier') ? 'up' : 'down',
                    zone: ifaceZone[name] || null,
                    config: entry?.config || {},
                }));
            } else if (!s.error) {
                s.error = net.error;
            }
        },
        { entry, abortController },
    );
}

export default definePage({
    init() {
        return { ifaces: [], zones: [] };
    },
    subscribe: ['firewall', 'networkd'],
    load,
    render(state) {
        const guard = renderGuard(state, 'Interfaces', 'Network interface management', state.ifaces.length);
        if (guard) return guard;

        const rows = state.ifaces.map(iface => {
            return h('tr', { key: iface.name },
                h('td', null, h('strong', null, iface.name)),
                h('td', { class: 'text-muted' }, String(iface.mac || 'N/A')),
                h('td', null, (iface.ips || []).join(', ') || 'N/A'),
                h('td', null, StatusText({ status: iface.state })),
                h('td', null,
                    ZoneSelect({
                        zones: state.zones,
                        value: iface.zone,
                        onChange: (z) => changeZone(iface.name, z, state),
                    }),
                    h('button', {
                        class: 'btn btn-sm btn-outline',
                        style: 'margin-left:8px',
                        'on:click': () => cfgModalFn(iface),
                    }, 'Config'),
                ),
            );
        });

        return [
            PageHeader({ title: 'Interfaces', subtitle: 'Network interface management' }),
            Table({
                columns: ['Name', 'MAC', 'IPs', 'State', 'Zone / Actions'],
                rows,
                emptyText: 'No interfaces found',
            }),
        ];
    },
});