const API = “https://mpboard.ai/wp-json”;
const COLORS = {
“accountancy”: “#6366f1”,
“business”: “#f59e0b”,
“economics”: “#10b981”,
“physics”: “#3b82f6”,
“chemistry”: “#8b5cf6”,
“biology”: “#22c55e”,
“maths”: “#ef4444”,
“science”: “#06b6d4”,
“english”: “#ec4899”,
“hindi”: “#f97316”,
“default”: “#6366f1”
};

let allCourses = [];
let quizzes = [];
let currentQuiz = null;
let currentAnswers = {};

async function fetchCourses() {
try {
const [courseRes, quizRes] = await Promise.all([
fetch(API + “/wp/v2/sfwd-courses?per_page=50&_fields=id,title,link,meta”),
fetch(API + “/wp/v2/sfwd-quiz?per_page=50&_fields=id,title,link,content,meta”)
]);
allCourses = await courseRes.json();
quizzes = await quizRes.json();
document.getElementById(“statCourses”).textContent = allCourses.length;
document.getElementById(“statQuizzes”).textContent = quizzes.length;
let qCount = 0;
for (const quiz of quizzes.slice(0, 5)) {
try {
const qRes = await fetch(API + “/ldlms/v1/sfwd-quiz/” + quiz.id + “/questions?per_page=1”);
const qData = await qRes.json();
if (qData && qData.length) qCount += qData.length;
} catch(e) {}
}
document.getElementById(“statQuestions”).textContent = qCount || “Coming Soon”;
renderTests(“all”);
} catch (e) {
document.getElementById(“mpba-content”).innerHTML = ‘

‘;
}
}

function renderTests(filter) {
const container = document.getElementById(“mpba-content”);
let filtered = quizzes;
if (filter !== “all”) {
const slug = filter;
filtered = quizzes.filter(q => {
const title = (q.title && q.title.rendered || “”).toLowerCase();
const content = (q.content && q.content.rendered || “”).toLowerCase();
return title.includes(slug.replace(“-“, ” “)) || content.includes(slug.replace(“-“, ” “));
});
}
const grouped = {};
for (const quiz of filtered) {
const courseId = quiz.meta?.course_id || quiz.meta?.course || 0;
const course = allCourses.find(c => c.id === courseId);
const courseName = course ? course.title.rendered : “General”;
if (!grouped[courseId || “0”]) {
let color = COLORS.default;
const cn = courseName.toLowerCase();
if (cn.includes(“account”)) color = COLORS.accountancy;
else if (cn.includes(“business”)) color = COLORS.business;
grouped[courseId || “0”] = { courseName, courseId, courseLink: course?.link || “#”, color, quizzes: [] };
}
grouped[courseId || “0”].quizzes.push(quiz);
}
let html = ‘

‘;
if (Object.keys(grouped).length === 0) {
html += ‘

‘;
} else {
const entries = Object.entries(grouped);
for (const [key, group] of entries) {
html += ‘

‘ + group.courseName + ‘

‘;
}
}
container.innerHTML = html;
}

const SAMPLE_QUIZZES = {
“partner”: [
{ id: 1, q: “A and B are partners sharing profits in 3:2 ratio. They admit C for 1/4th share. New profit-sharing ratio of A and B is 2:1. What is the sacrificing ratio of A?”, opts: [“4/20”, “3/20”, “5/20”, “2/20”], ans: 0 },
{ id: 2, q: “X and Y are partners with capitals of ₹1,00,000 and ₹80,000. Interest on capital is 10% p.a. Net profit before interest is ₹36,000. What amount of interest will be credited to X?”, opts: [“₹10,000”, “₹8,000”, “₹12,000”, “₹9,000”], ans: 0 },
{ id: 3, q: “When the partnership deed is silent, partners are entitled to interest on capital at which rate?”, opts: [“No interest is allowed”, “6% p.a.”, “10% p.a.”, “8% p.a.”], ans: 0 },
{ id: 4, q: “A drew ₹5,000 at the end of each month. What is the average period for calculating interest on drawings?”, opts: [“5.5 months”, “6.5 months”, “6 months”, “4.5 months”], ans: 0 },
{ id: 5, q: “Which account is prepared to show the distribution of profit among partners?”, opts: [“P&L Appropriation Account”, “P&L Account”, “Trading Account”, “Balance Sheet”], ans: 0 },
{ id: 6, q: “Under Fixed Capital Method, partners capitals remain fixed except when:”, opts: [“Additional capital introduced or withdrawn permanently”, “Profit is distributed”, “Interest on drawings is charged”, “Salary is paid to partner”], ans: 0 },
{ id: 7, q: “Net profit ₹90,000, ratio 5:3:2. What is C share?”, opts: [“₹18,000”, “₹27,000”, “₹45,000”, “₹9,000”], ans: 0 },
{ id: 8, q: “Interest on drawings is charged to which account?”, opts: [“Partner Current Account (Debit)”, “Capital Account (Credit)”, “Profit and Loss Account”, “Trading Account”], ans: 0 },
{ id: 9, q: “Commission 10% on net profit after charging such commission. Net profit before commission is ₹55,000. The commission amount is:”, opts: [“₹5,000”, “₹5,500”, “₹4,500”, “₹6,000”], ans: 0 },
{ id: 10, q: “When a partner is entitled to a salary of ₹12,000 p.a. and net profit is ₹60,000, the divisible profit is:”, opts: [“₹48,000”, “₹60,000”, “₹72,000”, “₹36,000”], ans: 0 }
]
};

async function startQuiz(quizId) {
document.getElementById(“quizOverlay”).style.display = “flex”;
const quiz = quizzes.find(q => q.id === quizId);
const title = quiz?.title?.rendered || “Practice Test”;
try {
const res = await fetch(API + “/ldlms/v1/sfwd-quiz/” + quizId + “/questions?per_page=50”);
const data = await res.json();
if (data && data.length > 0) renderQuizContent(data, title);
else renderSampleQuiz(title);
} catch(e) {
renderSampleQuiz(title);
}
}

function renderSampleQuiz(title) {
const qs = SAMPLE_QUIZZES.partner;
const formatted = qs.map(q => ({ id: q.id, question: q.q, options: q.opts, correct: q.ans }));
renderQuizContent(formatted, title);
}

function renderQuizContent(questions, title) {
currentQuiz = { questions, title };
currentAnswers = {};
let html = ‘

‘;
questions.forEach((q, i) => {
const qText = q.question || q.q || “Question ” + (i+1);
const options = q.options || q.opts || [“A”, “B”, “C”, “D”];
html += ‘

‘;
});
html += ‘

‘;
document.getElementById(“quizContent”).innerHTML = html;
}

function selectOption(qIdx, optIdx, total) {
currentAnswers[qIdx] = optIdx;
document.querySelectorAll(“#options-” + qIdx + ” .mpba-option”).forEach((el, i) => { el.classList.toggle(“selected”, i === optIdx); });
}

function submitQuiz() {
const questions = currentQuiz.questions;
let correct = 0;
const total = questions.length;
questions.forEach((q, i) => {
const userAns = currentAnswers[i];
const correctAns = q.correct || q.ans || 0;
if (userAns === correctAns) correct++;
document.querySelectorAll(“#options-” + i + ” .mpba-option”).forEach((el, oi) => {
el.style.pointerEvents = “none”;
if (oi === correctAns) el.classList.add(“correct”);
else if (oi === userAns && oi !== correctAns) el.classList.add(“wrong”);
el.classList.remove(“selected”);
});
});
const score = Math.round((correct / total) * 100);
let grade, msg, color;
if (score >= 80) { grade = “🌟 Excellent!”; msg = “You have mastered this topic! Keep it up.”; color = “#22c55e”; }
else if (score >= 60) { grade = “👍 Good Job!”; msg = “You know the basics well. Practice a bit more to master.”; color = “#f59e0b”; }
else if (score >= 40) { grade = “📖 Keep Learning”; msg = “Review the chapter notes and try again.”; color = “#f97316”; }
else { grade = “🔄 Needs Revision”; msg = “Go through the chapter again and practice more.”; color = “#ef4444”; }
const resultHtml = ‘

‘;
document.getElementById(“quizContent”).innerHTML = resultHtml;
}

function closeQuiz() { document.getElementById(“quizOverlay”).style.display = “none”; }

document.querySelectorAll(“.mpba-filter-btn”).forEach(btn => {
btn.addEventListener(“click”, function() {
document.querySelectorAll(“.mpba-filter-btn”).forEach(b => b.classList.remove(“active”));
this.classList.add(“active”);
renderTests(this.dataset.filter);
});
});

fetchCourses();