wikidocumentaries-api/wikimedia-commons.js at master · Wikidocumentaries/wikidocumentaries-api · GitHub

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const axios = require('axios');

const requestConfigTemplate = {
    baseURL: 'https://commons.wikimedia.org/',
    url: '/w/api.php',
    method: 'get',
    timeout: 10000,
    params: {
        action: 'query',
        prop: 'imageinfo',
        iiurlwidth: 400,
        iiurlheight: 400,
        redirects: 'resolve',
        iiprop: 'user|url|extmetadata',
        format: 'json',
    },
};

module.exports = {
    async getImagesFromCommonsWithTitle(topic, commonsCategory) {
        let requestConfig = requestConfigTemplate;

        if (commonsCategory !== undefined) {
            requestConfig.params.generator = 'categorymembers';
            requestConfig.params.gcmtype = 'file';
            requestConfig.params.gcmtitle = 'Category:' + commonsCategory;
            requestConfig.params.gcmlimit = 30;
        } else {
            requestConfig.params.generator = 'search';
            requestConfig.params.gsrsearch = topic;
            requestConfig.params.gsrlimit = 30;
            requestConfig.params.gsrnamespace = 6;
        }

        const response = await axios.request(requestConfig);

        if (!response.data.query || !response.data.query.pages) {
            return [];
        }

        return Object.keys(response.data.query.pages).map(p => {
            const page = response.data.query.pages[p];
            let image = {
                id: page.pageid,
                source: 'Wikimedia Commons',
                imageURL: page.imageinfo[0].url,
                thumbURL: page.imageinfo[0].thumburl,
                title: [],
                creators: [],
                uploader: page.imageinfo[0].user,
                institutions: [],
                infoURL: page.imageinfo[0].descriptionurl,
                location: null,
                geoLocations: [],
                year: null,
                license: '',
            };

            const extMetadata = page.imageinfo[0].extmetadata;
            image.title.push(page.title.replace('File:', '').replace(/\.[^/.]+$/, ''));

            if (extMetadata.GPSLatitude !== undefined && extMetadata.GPSLongitude !== undefined) {
                image.geoLocations.push('POINT(' + extMetadata.GPSLongitude.value + ' ' + extMetadata.GPSLatitude.value + ')')
            }

            if (extMetadata.DateTimeOriginal !== undefined) {
                const dateString = extMetadata.DateTimeOriginal.value;
                const year = parseInt(dateString.substr(0, 4), 10);
                if (year !== NaN) {
                    image.year = year;
                }
            }

            if (extMetadata.LicenseShortName !== undefined) {
                image.license = extMetadata.LicenseShortName.value;
            }

            return image;
        });
    }
};