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

const addZone = QuickModal({
    title: 'Add Zone',
    fields: [
        { label: 'Zone name', id: 'zone-name', placeholder: 'e.g. internal' },
        { label: 'Target', id: 'zone-target', placeholder: 'default (usually leave as default)' },
    ],
    submit: {
        url: '/api/firewall/zones',
        body: () => ({ name: ($val('zone-name') || '').trim(), target: ($val('zone-target') || '').trim() || 'default' }),
        validate: (b) => !b.name ? 'Zone name required' : null,
        successMsg: 'Zone created',
    },
    reload: (s) => load(s),
});

async function load(state, abortController, entry) {
    await refactorLoad(state,
        s => Object.keys(s.zones || {}).length,
        async (s, sig, isAborted) => {
            const [zRes, svcRes, ifRes] = await Promise.allSettled([
                apiFetch('/api/firewall/zones', { signal: sig }),
                apiFetch('/api/firewall/services', { signal: sig }),
                apiFetch('/api/firewall/interfaces', { signal: sig }),
            ]);
            if (isAborted()) return;

            const errors = [];
            if (zRes.status === 'rejected') errors.push(zRes.reason?.message || 'Failed');
            else if (!zRes.value.ok) errors.push(zRes.value.error || 'Failed');
            if (svcRes.status === 'rejected') errors.push(svcRes.reason?.message || 'Failed');
            else if (!svcRes.value.ok) errors.push(svcRes.value.error || 'Failed');
            if (ifRes.status === 'rejected') errors.push(ifRes.reason?.message || 'Failed');
            else if (!ifRes.value.ok) errors.push(ifRes.value.error || 'Failed');
            if (errors.length) {
                s.error = errors[0];
                return;
            }

            const data = zRes.value.data || {};
            const activeZones = data.active || {};
            const availableZones = data.available || [];

            const detailPromises = availableZones.map(name =>
                apiFetch('/api/firewall/zones/' + enc(name), { signal: sig })
            );
            const detailResults = await Promise.allSettled(detailPromises);

            if (isAborted()) return;

            const zones = {};
            for (let i = 0; i < availableZones.length; i++) {
                const name = availableZones[i];
                const res = detailResults[i];
                const detail = res.status === 'fulfilled' ? res.value : null;
                if (detail && detail.ok) {
                    zones[name] = detail.data;
                    const activeIfaces = activeZones[name];
                    if (Array.isArray(activeIfaces)) {
                        zones[name].interfaces = activeIfaces;
                    }
                }
            }
            s.zones = zones;
            s.services = svcRes.value.data || [];
            s.interfaces = ifRes.value.data || [];
        },
        { entry, abortController },
    );
}

export default definePage({
    init() {
        return { zones: {}, services: [], interfaces: [] };
    },
    subscribe: ['firewall'],
    load,
    render(state) {
        const guard = renderGuard(state, 'Zones', 'Firewall zone management', Object.keys(state.zones || {}).length);
        if (guard) return guard;

        const zoneCards = Object.entries(state.zones || []).map(([name, zdata]) => {
            const z = typeof zdata === 'object' ? zdata : {};
            const ifacesArr = Array.isArray(z.interfaces) ? z.interfaces : [];
            const svcsArr = Array.isArray(z.services) ? z.services : [];
            return h('div', { class: 'card', key: name, style: 'position:relative;' },
                h('div', { style: 'display:flex;justify-content:space-between;align-items:flex-start;' },
                    h('div', null,
                        h('h3', { style: 'font-size:16px;color:var(--accent);' }, name),
                        h('div', { class: 'text-muted text-sm', style: 'margin-bottom:10px;' },
                            z.target ? 'Target: ' + esc(z.target) : '',
                        ),
                    ),
                ),
                h('div', { class: 'text-sm mb-4' },
                    h('div', { class: 'text-muted', style: 'margin-bottom:4px;' }, 'Interfaces'),
                    ifacesArr.length
                        ? ifacesArr.map(i => Badge({ text: esc(i) }))
                        : h('span', { class: 'text-muted' }, 'None'),
                ),
                h('div', { class: 'text-sm mb-4' },
                    h('div', { class: 'text-muted', style: 'margin-bottom:4px;' }, 'Services'),
                    svcsArr.length
                        ? svcsArr.map(s => Badge({ text: esc(s), variant: 'success' }))
                        : h('span', { class: 'text-muted' }, 'None'),
                ),
                h('div', { style: 'display:flex;gap:6px;' },
                    h('button', { class: 'btn btn-sm btn-outline',
                        'on:click': () => MultiSelectModal({
                            title: 'Interfaces: ' + name,
                            url: '/api/firewall/zones/' + enc(name) + '/interfaces',
                            options: state.interfaces,
                            selected: ifacesArr,
                            fieldKey: 'interfaces',
                            successMsg: 'Interfaces updated',
                            reload: () => load(state),
                        })(),
                    }, 'Interfaces'),
                    h('button', { class: 'btn btn-sm btn-outline',
                        'on:click': () => MultiSelectModal({
                            title: 'Services: ' + name,
                            url: '/api/firewall/zones/' + enc(name) + '/services',
                            options: state.services,
                            selected: svcsArr,
                            fieldKey: 'services',
                            successMsg: 'Services updated',
                            reload: () => load(state),
                        })(),
                    }, 'Services'),
                    ConfirmDelete({
                        url: '/api/firewall/zones/' + enc(name),
                        message: 'Delete zone ' + name + '?',
                        success: 'Zone ' + name + ' deleted',
                        reload: () => load(state),
                        label: 'Delete',
                    }),
                ),
            );
        });

        return [
            PageHeader({
                title: 'Zones',
                subtitle: 'Firewall zones',
                actions: h('button', { class: 'btn btn-primary',
                    'on:click': () => addZone(state), }, 'Add Zone'),
            }),
            zoneCards.length
                ? h('div', { class: 'card-grid' }, ...zoneCards)
                : Empty({ text: 'No zones configured. Add a zone to get started.' }),
        ];
    },
});