/**
 * @fileoverview Store Exchange & Points Purchasing Controller
 * @module controllers/store-controller
 * @description وحدة التحكم في حاسبة استبدال النقاط التفاعلية وتنفيذ الشراء المباشر والخصم من المحفظة.
 */

(global => {
    'use strict';

    /**
     * تحديث وحساب مخرجات حاسبة شراء النقاط المباشرة
     * @returns {{ totalCostUSD: number, finalFbPoints: number, finalWaPoints: number }}
     */
    const updateInteractiveCalculator = () => {
        const config = global.FritreeStoreConfig;
        if (!config) {
            console.warn("[Fritree Store Calculator] Config module not loaded yet.");
            return { totalCostUSD: 0, finalFbPoints: 0, finalWaPoints: 0 };
        }

        const modeByUsdBtn = document.getElementById('e1kue4bxi8');
        const isUsdMode = modeByUsdBtn ? modeByUsdBtn.classList.contains('vn5qn7dmpk') : true;

        let totalCostUSD = 0;
        let baseFbPoints = 0;
        let baseWaPoints = 0;

        if (isUsdMode) {
            const usdInp = document.getElementById('jkfrigkx79');
            const usdSlider = document.getElementById('d59w7te1vj');
            const splitSlider = document.getElementById('e89vbjxky3');

            let usdVal = parseFloat(usdInp?.value) || 0.01;
            if (usdVal < 0.01) usdVal = 0.01; 
            if (usdVal > 10000) usdVal = 10000;
            totalCostUSD = usdVal;

            if (usdSlider) usdSlider.value = Math.min(10000, usdVal);

            const fbPct = parseInt(splitSlider?.value || '50', 10);
            const waPct = 100 - fbPct;
            const fbUsd = (totalCostUSD * fbPct) / 100;
            const waUsd = (totalCostUSD * waPct) / 100;

            const lblFbPct = document.getElementById('qlifseac5g');
            const lblFbUsd = document.getElementById('kh1jaojo84');
            const lblWaPct = document.getElementById('vsgn1osooh');
            const lblWaUsd = document.getElementById('fjb9lf7u6j');

            if (lblFbPct) lblFbPct.textContent = fbPct.toLocaleString('en-US');
            if (lblFbUsd) lblFbUsd.textContent = fbUsd.toFixed(2);
            if (lblWaPct) lblWaPct.textContent = waPct.toLocaleString('en-US');
            if (lblWaUsd) lblWaUsd.textContent = waUsd.toFixed(2);

            baseFbPoints = Math.round(fbUsd * config.EXCHANGE_RATES.FB);
            baseWaPoints = Math.round(waUsd * config.EXCHANGE_RATES.WA);
        } else {
            const fbPtsInp = document.getElementById('ra4lnuh31g');
            const waPtsInp = document.getElementById('obapd8lbcc');

            baseFbPoints = Math.max(0, parseInt(fbPtsInp?.value, 10) || 0);
            baseWaPoints = Math.max(0, parseInt(waPtsInp?.value, 10) || 0);

            const fbCost = baseFbPoints / config.EXCHANGE_RATES.FB;
            const waCost = baseWaPoints / config.EXCHANGE_RATES.WA;
            totalCostUSD = fbCost + waCost;

            if (totalCostUSD > 10000) {
                totalCostUSD = 10000;
            }
        }

        const finalFbPoints = baseFbPoints;
        const finalWaPoints = baseWaPoints;

        const summaryCost = document.getElementById('xaaobpe28o');
        const summaryBonusPct = document.getElementById('qtmqs3sswp');
        const summaryFbTotal = document.getElementById('xl39vkuv1s');
        const summaryWaTotal = document.getElementById('k7z19dhok1');

        if (summaryCost) summaryCost.innerHTML = `<i class="fa-solid fa-dollar-sign"></i> <span>$${totalCostUSD.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 })}</span>`;
        if (summaryBonusPct) {
            summaryBonusPct.innerHTML = `<i class="fa-solid fa-tag"></i> <span>تسعير مباشر</span>`;
            summaryBonusPct.style.color = "#64748b";
        }
        if (summaryFbTotal) {
            summaryFbTotal.innerHTML = `<i class="fa-brands fa-facebook"></i> <span>${finalFbPoints.toLocaleString('en-US')} نقطة</span>`;
        }
        if (summaryWaTotal) {
            summaryWaTotal.innerHTML = `<i class="fa-brands fa-whatsapp"></i> <span>${finalWaPoints.toLocaleString('en-US')} نقطة</span>`;
        }

        return {
            totalCostUSD,
            finalFbPoints,
            finalWaPoints
        };
    };

    /**
     * تنفيذ شراء النقاط المخصصة من الحاسبة
     */
    async function executeCustomCalculatorExchange() {
        const config = global.FritreeStoreConfig;
        const calcData = updateInteractiveCalculator();
        const usdCost = calcData.totalCostUSD;

        if (usdCost < 0.01) {
            alert("تنبيه: الحد الأدنى للشراء هو $0.01 (1 سنت)!");
            return;
        }
        if (usdCost > 10000.00) {
            alert("تنبيه: الحد الأقصى للشراء في المرة الواحدة هو $10,000.00 دولار!");
            return;
        }

        const activeBalance = global.FritreeAppState ? global.FritreeAppState.getPoints() : 0.00;
        if (activeBalance < usdCost) {
            alert(`رصيد محفظتك المتاح ($${activeBalance.toFixed(2)}) مش كفاية لإتمام الشراء بتكلفة $${usdCost.toFixed(2)}.\n\nاشحن محفظتك الأول بالدولار.`);
            return;
        }

        const fbPts = calcData.finalFbPoints;
        const waPts = calcData.finalWaPoints;

        let promptMsg = `تأكيد الشراء المباشر للنقاط:\n\nالتكلفة الإجمالية: $${usdCost.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 })}\n`;
        if (fbPts > 0) promptMsg += `- فيسبوك: +${fbPts.toLocaleString('en-US')}\n`;
        if (waPts > 0) promptMsg += `- واتساب: +${waPts.toLocaleString('en-US')}\n`;
        promptMsg += `\nهل تريد تأكيد العملية والخصم من المحفظة؟`;

        if (confirm(promptMsg)) {
            const descDeduct = `شراء مباشر من المتجر عبر الحاسبة التفاعلية: -$${usdCost.toFixed(2)}`;
            const success = await global.FritreeAppState.deductPoints(usdCost, descDeduct);

            if (success) {
                const balanceAfterTx = activeBalance - usdCost;
                const computedSignature = await config.calculateExchangeSignature('combo', fbPts + waPts, usdCost, balanceAfterTx);
                if (global.FritreeStorage) {
                    await global.FritreeStorage.set('last_exchange_receipt_sig', computedSignature);
                }

                if (fbPts > 0) {
                    const descFb = `شحن نقاط فيسبوك من المتجر: +${fbPts.toLocaleString('en-US')}`;
                    await global.FritreeAppState.addFbCards(fbPts, descFb);
                }
                if (waPts > 0) {
                    const descWa = `شحن نقاط واتساب من المتجر: +${waPts.toLocaleString('en-US')}`;
                    await global.FritreeAppState.addWaCards(waPts, descWa);
                }

                await global.FritreeAppState.saveAccountData();
                if (global.FritreeShellLayout) global.FritreeShellLayout.updatePointsUI();

                const successMsg = `تم الشراء بنجاح!\nتم شحن الأرصدة لمحفظتك الموحدة فوراً.`;
                alert(successMsg);

                if (typeof window.addLog === 'function') {
                    window.addLog(successMsg, 'success');
                }
                if (global.FritreeWallet && typeof global.FritreeWallet.renderLedgerTable === 'function') {
                    await global.FritreeWallet.renderLedgerTable();
                }
            } else {
                alert("خطأ: تعثر خصم الرصيد من المحفظة.");
            }
        }
    }

    /**
     * ربط أحداث حاسبة المتجر
     */
    const bindCalculatorEvents = () => {
        const btnByUsd = document.getElementById('e1kue4bxi8');
        const btnByPts = document.getElementById('oppazp520b');
        const containerUsdMode = document.getElementById('ssaw6xzw1u');
        const containerPtsMode = document.getElementById('ijac87awiy');

        if (btnByUsd && btnByPts) {
            btnByUsd.addEventListener('click', () => {
                btnByUsd.classList.add('vn5qn7dmpk');
                btnByPts.classList.remove('vn5qn7dmpk');
                if (containerUsdMode) containerUsdMode.style.display = 'flex';
                if (containerPtsMode) containerPtsMode.style.display = 'none';
                updateInteractiveCalculator();
            });

            btnByPts.addEventListener('click', () => {
                btnByPts.classList.add('vn5qn7dmpk');
                btnByUsd.classList.remove('vn5qn7dmpk');
                if (containerPtsMode) containerPtsMode.style.display = 'flex';
                if (containerUsdMode) containerUsdMode.style.display = 'none';
                updateInteractiveCalculator();
            });
        }

        const usdInp = document.getElementById('jkfrigkx79');
        const usdSlider = document.getElementById('d59w7te1vj');
        const splitSlider = document.getElementById('e89vbjxky3');

        if (usdInp) {
            usdInp.addEventListener('input', () => {
                let val = parseFloat(usdInp.value) || 0.01;
                if (val > 10000) val = 10000;
                usdInp.value = val;
                updateInteractiveCalculator();
            });
            usdInp.addEventListener('change', updateInteractiveCalculator);
        }

        if (usdSlider) {
            usdSlider.addEventListener('input', (e) => {
                if (usdInp) usdInp.value = parseFloat(e.target.value);
                updateInteractiveCalculator();
            });
        }

        if (splitSlider) {
            splitSlider.addEventListener('input', updateInteractiveCalculator);
        }

        const fbPtsInp = document.getElementById('ra4lnuh31g');
        const waPtsInp = document.getElementById('obapd8lbcc');

        if (fbPtsInp) fbPtsInp.addEventListener('input', updateInteractiveCalculator);
        if (waPtsInp) waPtsInp.addEventListener('input', updateInteractiveCalculator);

        const executeExchangeBtn = document.getElementById('fmkoglcexo');
        if (executeExchangeBtn) {
            executeExchangeBtn.addEventListener('click', executeCustomCalculatorExchange);
        }
    };

    /**
     * تصدير وحدة تحكم المتجر
     */
    global.FritreeStoreCalculator = {
        updateCalculator: updateInteractiveCalculator,
        executeExchange: executeCustomCalculatorExchange,
        bindEvents: bindCalculatorEvents
    };

    if (typeof document !== 'undefined') {
        bindCalculatorEvents();
    }

})(typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : this);