let settAcTimeout = null;

document.addEventListener('DOMContentLoaded', async () => {
    await loadDropdowns();
    await loadSettings();
    wireAutocomplete('settTransportCodmat', 'settTransportAc');
    wireAutocomplete('settDiscountCodmat', 'settDiscountAc');
});

async function loadDropdowns() {
    try {
        const [sectiiRes, politiciRes, gestiuniRes] = await Promise.all([
            fetch('/api/settings/sectii'),
            fetch('/api/settings/politici'),
            fetch('/api/settings/gestiuni')
        ]);
        const sectii = await sectiiRes.json();
        const politici = await politiciRes.json();
        const gestiuni = await gestiuniRes.json();

        const gestiuneEl = document.getElementById('settIdGestiune');
        if (gestiuneEl) {
            gestiuneEl.innerHTML = '<option value="">— orice gestiune —</option>';
            gestiuni.forEach(g => {
                gestiuneEl.innerHTML += `<option value="${escHtml(g.id)}">${escHtml(g.label)}</option>`;
            });
        }

        const sectieEl = document.getElementById('settIdSectie');
        if (sectieEl) {
            sectieEl.innerHTML = '<option value="">— selectează secție —</option>';
            sectii.forEach(s => {
                sectieEl.innerHTML += `<option value="${escHtml(s.id)}">${escHtml(s.label)}</option>`;
            });
        }

        const polEl = document.getElementById('settIdPol');
        if (polEl) {
            polEl.innerHTML = '<option value="">— selectează politică —</option>';
            politici.forEach(p => {
                polEl.innerHTML += `<option value="${escHtml(p.id)}">${escHtml(p.label)}</option>`;
            });
        }

        const tPolEl = document.getElementById('settTransportIdPol');
        if (tPolEl) {
            tPolEl.innerHTML = '<option value="">— implicită —</option>';
            politici.forEach(p => {
                tPolEl.innerHTML += `<option value="${escHtml(p.id)}">${escHtml(p.label)}</option>`;
            });
        }

        const dPolEl = document.getElementById('settDiscountIdPol');
        if (dPolEl) {
            dPolEl.innerHTML = '<option value="">— implicită —</option>';
            politici.forEach(p => {
                dPolEl.innerHTML += `<option value="${escHtml(p.id)}">${escHtml(p.label)}</option>`;
            });
        }

        const pPolEl = document.getElementById('settIdPolProductie');
        if (pPolEl) {
            pPolEl.innerHTML = '<option value="">— fără politică producție —</option>';
            politici.forEach(p => {
                pPolEl.innerHTML += `<option value="${escHtml(p.id)}">${escHtml(p.label)}</option>`;
            });
        }
    } catch (err) {
        console.error('loadDropdowns error:', err);
    }
}

async function loadSettings() {
    try {
        const res = await fetch('/api/settings');
        const data = await res.json();
        const el = (id) => document.getElementById(id);
        if (el('settTransportCodmat')) el('settTransportCodmat').value = data.transport_codmat || '';
        if (el('settTransportVat')) el('settTransportVat').value = data.transport_vat || '21';
        if (el('settTransportIdPol')) el('settTransportIdPol').value = data.transport_id_pol || '';
        if (el('settDiscountCodmat')) el('settDiscountCodmat').value = data.discount_codmat || '';
        if (el('settDiscountVat')) el('settDiscountVat').value = data.discount_vat || '21';
        if (el('settDiscountIdPol')) el('settDiscountIdPol').value = data.discount_id_pol || '';
        if (el('settSplitDiscountVat')) el('settSplitDiscountVat').checked = data.split_discount_vat === "1";
        if (el('settIdPol')) el('settIdPol').value = data.id_pol || '';
        if (el('settIdPolProductie')) el('settIdPolProductie').value = data.id_pol_productie || '';
        if (el('settIdSectie')) el('settIdSectie').value = data.id_sectie || '';
        if (el('settIdGestiune')) el('settIdGestiune').value = data.id_gestiune || '';
        if (el('settGomagApiKey')) el('settGomagApiKey').value = data.gomag_api_key || '';
        if (el('settGomagApiShop')) el('settGomagApiShop').value = data.gomag_api_shop || '';
        if (el('settGomagDaysBack')) el('settGomagDaysBack').value = data.gomag_order_days_back || '7';
        if (el('settGomagLimit')) el('settGomagLimit').value = data.gomag_limit || '100';
        if (el('settDashPollSeconds')) el('settDashPollSeconds').value = data.dashboard_poll_seconds || '5';
    } catch (err) {
        console.error('loadSettings error:', err);
    }
}

async function saveSettings() {
    const el = (id) => document.getElementById(id);
    const payload = {
        transport_codmat: el('settTransportCodmat')?.value?.trim() || '',
        transport_vat: el('settTransportVat')?.value || '21',
        transport_id_pol: el('settTransportIdPol')?.value?.trim() || '',
        discount_codmat: el('settDiscountCodmat')?.value?.trim() || '',
        discount_vat: el('settDiscountVat')?.value || '21',
        discount_id_pol: el('settDiscountIdPol')?.value?.trim() || '',
        split_discount_vat: el('settSplitDiscountVat')?.checked ? "1" : "",
        id_pol: el('settIdPol')?.value?.trim() || '',
        id_pol_productie: el('settIdPolProductie')?.value?.trim() || '',
        id_sectie: el('settIdSectie')?.value?.trim() || '',
        id_gestiune: el('settIdGestiune')?.value?.trim() || '',
        gomag_api_key: el('settGomagApiKey')?.value?.trim() || '',
        gomag_api_shop: el('settGomagApiShop')?.value?.trim() || '',
        gomag_order_days_back: el('settGomagDaysBack')?.value?.trim() || '7',
        gomag_limit: el('settGomagLimit')?.value?.trim() || '100',
        dashboard_poll_seconds: el('settDashPollSeconds')?.value?.trim() || '5',
    };
    try {
        const res = await fetch('/api/settings', {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify(payload)
        });
        const data = await res.json();
        const resultEl = document.getElementById('settSaveResult');
        if (data.success) {
            if (resultEl) { resultEl.textContent = 'Salvat!'; resultEl.style.color = '#16a34a'; }
            setTimeout(() => { if (resultEl) resultEl.textContent = ''; }, 3000);
        } else {
            if (resultEl) { resultEl.textContent = 'Eroare: ' + JSON.stringify(data); resultEl.style.color = '#dc2626'; }
        }
    } catch (err) {
        const resultEl = document.getElementById('settSaveResult');
        if (resultEl) { resultEl.textContent = 'Eroare: ' + err.message; resultEl.style.color = '#dc2626'; }
    }
}

function wireAutocomplete(inputId, dropdownId) {
    const input = document.getElementById(inputId);
    const dropdown = document.getElementById(dropdownId);
    if (!input || !dropdown) return;

    input.addEventListener('input', () => {
        clearTimeout(settAcTimeout);
        settAcTimeout = setTimeout(async () => {
            const q = input.value.trim();
            if (q.length < 2) { dropdown.classList.add('d-none'); return; }
            try {
                const res = await fetch(`/api/articles/search?q=${encodeURIComponent(q)}`);
                const data = await res.json();
                if (!data.results || data.results.length === 0) { dropdown.classList.add('d-none'); return; }
                dropdown.innerHTML = data.results.map(r =>
                    `<div class="autocomplete-item" onmousedown="settSelectArticle('${inputId}', '${dropdownId}', '${escHtml(r.codmat)}')">
                        <span class="codmat">${escHtml(r.codmat)}</span> &mdash; <span class="denumire">${escHtml(r.denumire)}</span>
                    </div>`
                ).join('');
                dropdown.classList.remove('d-none');
            } catch { dropdown.classList.add('d-none'); }
        }, 250);
    });

    input.addEventListener('blur', () => {
        setTimeout(() => dropdown.classList.add('d-none'), 200);
    });
}

function settSelectArticle(inputId, dropdownId, codmat) {
    document.getElementById(inputId).value = codmat;
    document.getElementById(dropdownId).classList.add('d-none');
}

function escHtml(s) {
    if (s == null) return '';
    return String(s)
        .replace(/&/g, '&amp;')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;')
        .replace(/'/g, '&#39;');
}