User:Husky/ifff-viewer-link.js

(function() {
    // First declare the viewer endpoint and a shortcut for jQuery
    const VIEWER = 'https://tools.wmflabs.org/zoomviewer/proxy.php';
    const $ = window.jQuery;

    // Get the first image, we assume that's the main one
    // If there's no picture on this item, stop the whole process
    const imgProp = $('[title="Property:P18"]');

    if (!imgProp.length) {
        // No images, stop this whole thing
        return;
    }

    // Now get the first image and get the commons filename
    let imgVal = imgProp
        .parents('.wikibase-statementgroupview')
        .find('.commons-media-caption a');

    if (!imgVal.length) {
        // No image values
        return;
    }

    // Get the first src
    const imgSrc = $(imgVal[0]).text();

    // Now loop through all P2677 qualifiers and transform the
    // crop to the viewer link
    const posProps = $('[title="Property:P2677"]');

    if (!posProps.length) {
        // No props, skip this
        return;
    }

    // Okay, now loop over all those props
    posProps.get().forEach((posProp) => {
        // And loop over all the values as well
        const posValues = $(posProp)
            .parents('.wikibase-snaklistview')
            .find('.wikibase-snakview-value');

        posValues.get().forEach((posVal) => {
            // Get the location as a string and add that, together
            // with the image we got earlier, to the viewer link
            // and wrap the value in a hyperlink containing the
            // crop
            const posLoc = $(posVal).text();
            const url = `${VIEWER}?iiif=${imgSrc}/${posLoc}/full/0/default.jpg`;
            $(posVal).wrap(`<a href="${url}" target="_blank"></a>`);
        });
    });
})();