function isHideable(div_obj) {
    try {
        // Ignore for TOC since it is handled differently
        if (div_obj.id === "text-table-of-contents") return false;
        if (div_obj.id === "table-of-contents") return false;
        // No point in hiding top level
        if (div_obj.classList.contains("outline-2")) return false;
        if (div_obj.classList.contains("outline-text-2")) return false;
    } catch (e) {
        console.log(div_obj);
        console.log(e);
    }
    return true;
}

function hideForOrg_whenclicked(div_obj) {
    if (!isHideable(div_obj)) return;
    const parent = div_obj.parentElement;
    parent.classList.remove("orgjq-expanded");
    parent.classList.add("orgjq-contracted");
}

function showForOrg_whenclicked(div_obj) {
    const parent = div_obj.parentElement;
    parent.classList.remove("orgjq-contracted");
    parent.classList.add("orgjq-expanded");
}

function toggleForOrg_whenclicked(div_obj) {
    const parent = div_obj.parentElement;
    if (parent.classList.contains("orgjq-expanded")) {
        hideForOrg_whenclicked(div_obj);
    } else {
        showForOrg_whenclicked(div_obj);
    }
}

function enable_global_outlining() {
    // Called once e.g. the first time the page is loaded
    // handle the click event for each header
    for (let i = 2; i <= 7; ++i) {
        const headers = document.querySelectorAll(`h${i}`);
        headers.forEach(header => {
            header.style.cursor = "pointer";
            header.addEventListener('click', function() {
                // Get the first div sibling after the header
                const parent = this.parentElement;
                const divs = parent.querySelectorAll(':scope > div');
                if (divs.length > 0) {
                    toggleForOrg_whenclicked(divs[0]);
                }
            });
        });
    }

    // alternatively: mark everything as open
    for (let i = 2; i <= 7; ++i) {
        const headers = document.querySelectorAll(`h${i}`);
        headers.forEach(header => {
            const parent = header.parentElement;
            parent.classList.remove("orgjq-contracted");
            parent.classList.add("orgjq-expanded");
        });
    }

    // except TOC
    const toc = document.querySelector("div#table-of-contents");
    if (toc) {
        toc.classList.remove("orgjq-expanded");
        toc.classList.add("orgjq-contracted");
    }

    const autocollapse = document.querySelectorAll(".autocollapse");
    autocollapse.forEach(element => {
        const grandparent = element.parentElement?.parentElement;
        if (grandparent) {
            hideForOrg_whenclicked(grandparent);
        }
    });
}

// Run when DOM is fully loaded
if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', enable_global_outlining);
} else {
    // DOM is already loaded
    enable_global_outlining();
}