import { h, PageHeader, Empty, Table, Card, Badge, renderGuard, esc, enc, $val, apiFetch, toast, openModal, closeModal, formModal, definePage, getModel, modelFetch, ActionCell, certStatusBadge, poll } from '/static/hoover/index.js?v=7';
const _issueState = { domain: '', modalIdx: -1, account: null, validating: false };

function _accountCard(account) {
    if (!account || !account.registered) {
        return h('div', { class: 'card' },
            h('div', { class: 'card-header' },
                [
                    h('span', null, 'ACME Account'),
                    h('button', {
                        class: 'btn btn-sm btn-primary',
                        style: 'margin-left:auto;',
                        'on:click': () => registerAccountModal(),
                    }, 'Register Account'),
                ]
            ),
            h('div', { class: 'card-body' },
                h('div', { class: 'text-muted text-sm' }, 'Not registered'),
            ),
        );
    }
    return h('div', { class: 'card' },
        h('div', { class: 'card-header' },
            [
                h('span', null, 'ACME Account'),
                h('button', {
                    class: 'btn btn-sm btn-outline',
                    style: 'margin-left:auto;',
                    'on:click': () => settingsModal(account),
                }, '\u2699'),
            ]
        ),
        h('div', { class: 'card-body' },
            h('div', null, ['Registered as ', h('strong', null, esc(account.email))]),
            h('div', { class: 'text-sm text-muted' }, ['CA: ', esc(account.ca)]),
        ),
    );
}

function registerAccountModal() {
    openModal((inner) => {
        formModal(inner, 'Register ACME Account',
            [
                { label: 'Email', id: 'reg-email', type: 'email', placeholder: 'you@example.com' },
                {
                    label: 'CA Provider',
                    id: 'reg-server',
                    tag: 'select',
                    options: [['letsencrypt', "Let's Encrypt"], ['zerossl', 'ZeroSSL']],
                },
            ],
            [
                { label: 'Cancel', cls: 'btn-outline', action: 'c', handler: () => closeModal() },
                {
                    label: 'Register',
                    cls: 'btn-primary',
                    action: 'r',
                    handler: async () => {
                        const email = ($val('reg-email') || '').trim();
                        if (!email) { toast('Email is required', 'error'); return; }
                        const server = document.getElementById('reg-server')?.value || 'letsencrypt';
                        const resp = await apiFetch('/api/certs/account/register', {
                            method: 'POST',
                            body: { email, server },
                        });
                        if (resp.ok) {
                            toast('ACME account registered', 'success');
                            closeModal();
                            modelFetch('acme');
                        } else {
                            toast(resp.error || 'Registration failed', 'error');
                        }
                    },
                },
            ],
        );
    });
}

function settingsModal(account) {
    openModal((inner) => {
        inner.innerHTML = '<h2 class="modal-title">Account Settings</h2>'
            + '<div class="modal-body">'
            + '<div class="form-group"><label>Current Account</label><div class="text-sm">'
            + esc(account.email) + (account.ca ? ' (' + esc(account.ca) + ')' : '')
            + '</div></div>'
            + '<hr>'
            + '<div class="form-group"><label>Update Email</label>'
            + '<input id="set-email" type="email" placeholder="new@example.com"></div>'
            + '<hr>'
            + '<div class="text-danger"><strong>Danger Zone</strong></div>'
            + '<button class="btn btn-danger" data-action="set-deactivate">Deactivate Account</button>'
            + '</div><div class="modal-actions">'
            + '<button class="btn btn-outline" data-action="set-cancel">Cancel</button>'
            + '<button class="btn btn-primary" data-action="set-save">Save Email</button>'
            + '</div>';

        inner.querySelector('[data-action="set-cancel"]')?.addEventListener('click', () => {
            closeModal();
        });

        inner.querySelector('[data-action="set-save"]')?.addEventListener('click', async () => {
            const email = ($val('set-email') || '').trim();
            if (!email) { toast('Email is required', 'error'); return; }
            const resp = await apiFetch('/api/certs/email', {
                method: 'POST',
                body: { email },
            });
            if (resp.ok) {
                toast('Email updated', 'success');
                closeModal();
                modelFetch('acme');
            } else {
                toast(resp.error || 'Failed', 'error');
            }
        });

        inner.querySelector('[data-action="set-deactivate"]')?.addEventListener('click', async () => {
            if (!confirm('Deactivate ACME account? You will need to register again to issue certificates.')) return;
            const resp = await apiFetch('/api/certs/account', { method: 'DELETE' });
            if (resp.ok) {
                toast('Account deactivated', 'success');
                closeModal();
                modelFetch('acme');
            } else {
                toast(resp.error || 'Failed', 'error');
            }
        });
    });
}

function issueCertModal(state) {
    _issueState.domain = '';
    _issueState.modalIdx = -1;
    _issueState.account = null;
    _issueState.validating = false;

    (async () => {
        const accountResp = await apiFetch('/api/certs/account');
        _issueState.account = accountResp.ok ? accountResp.data : null;
        _renderIssueModal(state);
    })();
}

function _renderIssueModal(state) {
    const account = _issueState.account;
    const registered = account && account.registered;
    const accountBadge = registered
        ? esc(account.email) + ' (' + esc(account.ca) + ')'
        : 'No account registered';

    openModal((inner) => {
        inner.innerHTML = '<h2 class="modal-title">Issue Certificate</h2>'
            + '<div class="modal-body">'
            + '<div id="ic-account-info" class="text-sm mb-2">'
            + '<strong>Using account:</strong> ' + esc(accountBadge) + '</div>'
            + (registered
                ? '<div class="form-group"><label>Domain</label><input id="ic-domain" placeholder="example.com"></div>'
                : '<div class="text-warning">Register an ACME account first</div>'
            )
            + '<div id="ic-vresults"></div>'
            + '</div><div class="modal-actions">'
            + '<button class="btn btn-outline" data-action="ic-cancel">Cancel</button>'
            + (registered
                ? '<button class="btn btn-primary" data-action="ic-validate">Validate</button>'
                : '<button class="btn btn-primary" disabled>Validate</button>'
                  + '<button class="btn btn-outline" data-action="ic-register" style="margin-left:8px;">Register Account</button>'
            )
            + '</div>';

        _issueState.modalIdx = document.querySelectorAll('#modal-root > div').length - 1;

        inner.querySelector('[data-action="ic-cancel"]')?.addEventListener('click', () => {
            closeModal(_issueState.modalIdx);
        });

        inner.querySelector('[data-action="ic-register"]')?.addEventListener('click', () => {
            closeModal(_issueState.modalIdx);
            registerAccountModal();
        });

        if (!registered) return;

        inner.querySelector('[data-action="ic-validate"]')?.addEventListener('click', async () => {
            if (_issueState.validating) return;
            const domain = ($val('ic-domain') || '').trim();
            if (!domain) { toast('Domain is required', 'error'); return; }
            _issueState.validating = true;
            _issueState.domain = domain;
            try {
                const resp = await apiFetch('/api/certs/validate', {
                    method: 'POST',
                    body: { domain },
                });
                if (!resp.ok) {
                    toast(resp.error || 'Validation failed', 'error');
                    return;
                }
                _showValidate(inner, domain, resp.data.checks, resp.data.ready, state);
            } finally {
                _issueState.validating = false;
            }
        });
    });
}

function _showValidate(inner, domain, checks, ready, state) {
    const resultsHtml = checks.map(c => {
        let cls = 'text-success';
        let icon = '\u2713';
        if (!c.passed && c.blocking) { cls = 'text-danger'; icon = '\u2717'; }
        else if (!c.passed && !c.blocking) { cls = 'text-warning'; icon = '\u26A0'; }
        return '<div>' + icon + ' <strong>' + esc(c.name) + '</strong>'
            + ': ' + '<span class="' + cls + '">' + esc(c.message) + '</span></div>';
    }).join('');

    inner.innerHTML = '<h2 class="modal-title">Validate: ' + esc(domain) + '</h2>'
        + '<div class="modal-body">'
        + '<div class="form-group"><label>Domain</label><input id="ic-domain" value="' + esc(domain) + '"></div>'
        + '<div id="ic-vresults">' + resultsHtml + '</div>'
        + '</div><div class="modal-actions">'
        + '<button class="btn btn-outline" data-action="ic-cancel">Cancel</button>'
        + '<button class="btn btn-outline" data-action="ic-validate" style="margin-right:8px;">Re-validate</button>'
        + '<button class="btn btn-primary" data-action="ic-issue"'
        + (ready ? '' : ' disabled') + '>Issue</button>'
        + '</div>';

    inner.querySelector('[data-action="ic-cancel"]')?.addEventListener('click', () => {
        closeModal(_issueState.modalIdx);
    });

    inner.querySelector('[data-action="ic-validate"]')?.addEventListener('click', async () => {
        if (_issueState.validating) return;
        const domain2 = ($val('ic-domain') || '').trim();
        if (!domain2) { toast('Domain is required', 'error'); return; }
        _issueState.validating = true;
        _issueState.domain = domain2;
        try {
            const resp2 = await apiFetch('/api/certs/validate', {
                method: 'POST',
                body: { domain: domain2 },
            });
            if (!resp2.ok) { toast(resp2.error || 'Validation failed', 'error'); return; }
            _showValidate(inner, domain2, resp2.data.checks, resp2.data.ready, state);
        } finally {
            _issueState.validating = false;
        }
    });

    inner.querySelector('[data-action="ic-issue"]')?.addEventListener('click', async () => {
        const body = { domain: _issueState.domain };
        const issueResp = await apiFetch('/api/certs/issue/start', {
            method: 'POST',
            body,
        });
        if (issueResp.ok) {
            toast('Issuance started for ' + _issueState.domain, 'success');
            closeModal(_issueState.modalIdx);
            const rid = issueResp.data?.request_id;
            if (rid) pollCertIssue(rid, state);
        } else {
            toast(issueResp.error || 'Failed', 'error');
        }
    });
}

async function pollCertIssue(rid, state) {
    poll({
        url: '/api/certs/issue/' + enc(rid),
        successKey: (d) => d.status === 'completed',
        onErrorKey: (d) => d.status === 'failed',
        onComplete: (d) => {
            toast('Certificate issued for ' + (d.domain || rid), 'success');
            modelFetch('acme');
        },
        onError: (d) => {
            toast('Issuance failed: ' + (d?.error || 'unknown'), 'error');
        },
    });
}

export default definePage({
    init() {
        return {
            acme: getModel('acme'),
        };
    },
    render(state) {
        const guard = renderGuard(state.acme, 'Certificates', 'ACME certificate management', state.acme.data);
        if (guard) return guard;

        const account = state.acme.data?.account || { registered: false, email: '', ca: '' };
        const rows = (state.acme.data?.certs || []).map(c => {
            const badge = certStatusBadge({ expired: c.expired, daysRemaining: c.days_remaining });

            return h('tr', { key: c.domain },
                h('td', null, h('strong', null, esc(c.domain || 'unknown'))),
                h('td', { class: 'text-sm' }, esc(c.issuer || '-')),
                h('td', null, esc(c.expiry || 'N/A')),
                h('td', null, badge),
                ActionCell({
                    editLabel: 'Renew',
                    editClick: async () => {
                        const resp = await apiFetch('/api/certs/' + enc(c.domain) + '/renew', { method: 'POST' });
                        if (resp.ok) toast('Renewal started for ' + c.domain, 'success');
                        else toast(resp.error || 'Failed', 'error');
                    },
                    removeUrl: '/api/certs/' + enc(c.domain),
                    removeMessage: 'Remove certificate for ' + c.domain + '?',
                    removeSuccess: 'Certificate removed',
                    removeRefresh: 'acme',
                }),
            );
        });

        return [
            PageHeader({
                title: 'Certificates',
                subtitle: 'ACME certificate management',
                actions: h('button', { class: 'btn btn-primary',
                    'on:click': () => issueCertModal(state) }, 'Issue Certificate'),
            }),
            _accountCard(account),
            rows.length
                ? Table({
                    columns: ['Domain', 'Issuer', 'Expiry', 'Status', 'Actions'],
                    rows,
                })
                : Empty({ text: 'No certificates found. Issue a certificate to get started.' }),
        ];
    },
});