/*  DokuWiki MoaiEditor Match_media.js file
    Version : 0.5 (May 5, 2026)
    Author  : MoaiTools <info@moaitools.org>
    License : GPL 3 (http://www.gnu.org/licenses/gpl.html) */

MoaiEditor.MatchMedia = class {

    constructor(outer) {
        this.tools = outer;
    }
    // ────────────────────────────────────    
    same (score, block, node) {
        
        // Gather media tags in the text (if not cached)
        if (!('media' in block))
            this.gatherFromText(block);
        
        // Gather media elements in the htlm element (if not cached)
        if (!('media' in node))
            this.gatherFromNode(node);
            
    
        // Copy array because it will be trimmed
        var textMedia = block.media.slice();
        
        // Check matches
        var n = 0;
        var m = 0;
        for (let pathname of node.media) {
            var i = 0;
            for (let words of textMedia) 
                if (this.tools.wordsInString(words, pathname).score == 1) {
                    m += 1;
                    textMedia.splice(i,1);
                    break;
                }
            n += 1;
        }        
        
        // Update the score
        score.m += m;
        score.n += n;
    }
    // ────────────────────────────────────
    gatherFromText (block) {
    
        // Get the text from the block
        var text = block.text;
        if ('cleantext' in block)
            text = block.cleantext;
    
        // Define patterns
        const patterns = [
        /*  /\[\{\{(?:[^\}]|(?:\}[^\}]))+\}\}\]/gu,       //  Imagebox plugin [{{ }}] */
            /\{\{(?:[^\}]|(?:\}[^\}]))+\}\}/gu,           //  Bundled dokuwiki media tag {{wiki:dokuwiki-128.png?linkonly|Description}}
        ];
        // Gather media tags in the text
        var media = [];
        for (let pattern of patterns) {
            const matches = text.match(pattern);
            if (matches === null)
                continue;
            // Remove the matches from the text to avoid double matching
            for (let match of matches)
                text = text.replace(match,'');
            // Parse the filename with namespace part
            for (let match of matches) {
                const filepath = match.match(/[^{]*?(?=[?|}])/);
                if (filepath !== null) {
                    var parts = filepath[0].trim().split(/[:/\\]/);
                    parts = parts.filter(str => (str !== ''));
                    if (parts.length > 0)
                        media.push(parts);
                }
            }
        }
        // Store
        block.media = media;
        block.cleantext = text;
    }
    // ────────────────────────────────────
    gatherFromNode (node) {
    
        // Gather media files
        var pathnames = [];
        for (let mediaElement of node.handle.querySelectorAll(":scope > .media")) {       // The filename can be either in 'src' or 'href'
            var pathname = null;
            const tag = mediaElement.tagName;
            if (tag == 'A') 
                pathname = mediaElement.querySelector(":scope > img")?.src;
            if (tag == 'VIDEO') 
                pathname = mediaElement.querySelector(":scope source")?.src;
            if (pathname !== undefined  &&  pathname !== null) {
                pathnames.push(pathname);
            } 
        }
        node.media = pathnames;
    }
    
}; // End Class