templater.get-random.js

<%*
//v0.3 - Allow for Include and Exclude variables to have multiple criteria -- Define Qty of results

//VARIABLES TO SET
    //How many results to return
    const howMany = 1;
    //Include the "#" for tags and brackets "[" for pages
    const pageOrTag = "#quote";
    //The Including and Excluding variables are arrays []. To add multiple values use format: ["one","two"]
    //This is a plain text filter of the resulting blocks
    const including = [""];
    //This is a plain text EXCLUDE filter of the resulting blocks
    const excluding = [""];
    //Alias to use for the page link (leave blank "" to show the link normally)
    const alias = "Page Source";
//END OF VARIABLES

    const files = await app.vault.getMarkdownFiles();
    const matchedBlocks = [];
    for (const eachFile of files) {
        const mdCache = app.metadataCache.getFileCache(eachFile);
        const links = mdCache.links;
        const tags = mdCache.tags;
        if(links || tags) {
            const fileCont = await app.vault.cachedRead(eachFile);
            if(links) {
                for (const eachLink of links) {
                    if(eachLink.displayText === pageOrTag || eachLink.link === pageOrTag || eachLink.original === pageOrTag) {
                        const lineNum = eachLink.position.start.line;
                        const blockCont = fileCont.split('\n')[lineNum];
                        matchedBlocks.push([blockCont,eachFile]);
                    }
                }
            }
            if(tags) {
                for (const eachTag of tags) {
                    //if(eachTag.tag === pageOrTag) {
                    if(eachTag.tag.startsWith(pageOrTag)) {
                        const lineNum = eachTag.position.start.line;
                        const blockCont = fileCont.split('\n')[lineNum];
                        matchedBlocks.push([blockCont,eachFile]);
                    }
                }
            }
        }
    }
    
    let filteredBlocks = matchedBlocks.filter(eachBlock => !eachBlock[0].includes('#random'));
    filteredBlocks = filteredBlocks.filter(eachBlock => !eachBlock[0].includes('const pageOrTag ='));
    filteredBlocks = filteredBlocks.filter(eachBlock => !eachBlock[0].includes('const including ='));
    filteredBlocks = filteredBlocks.filter(eachBlock => !eachBlock[0].includes('const excluding ='));
    
    if(including[0] != "") {
        including.forEach(eachInclude => {
            filteredBlocks = filteredBlocks.filter(eachBlock => eachBlock[0].includes(eachInclude));
        });
    }
    
    if(excluding[0] != "") {
        excluding.forEach(eachExclude => {
            filteredBlocks = filteredBlocks.filter(eachBlock => !eachBlock[0].includes(eachExclude));
        });
    }
    
    let finalResult = "";
    if(filteredBlocks.length > 0) {
        for (let ctr = 1; ctr <= howMany; ctr++) {
            if(filteredBlocks.length > 0) {
                let foundRandomArr = filteredBlocks[Math.floor(Math.random() * filteredBlocks.length)];
                let foundRandomOrig = foundRandomArr[0];
                let foundRandom = foundRandomArr[0];
                foundRandom = foundRandom.replace(/^#+ /,'');
                foundRandom = foundRandom.replace(/^ *[-*] \[ \] /,'');
                foundRandom = foundRandom.replace(/^ *[-*] \[x\] /,'');
                foundRandom = foundRandom.replace(/^ *[-*] /,'').trim();
                let sourceLink = "";
                if(alias === "") {
                    sourceLink = ' - [' + `[${foundRandomArr[1].basename}]]`;
                } else {
                    sourceLink = ' - [' + `[${foundRandomArr[1].basename}|${alias}]]`;
                }
                foundRandom = foundRandom + ' - #random' + sourceLink;
                if(ctr > 1){foundRandom = '\n\n' + foundRandom};
                finalResult += foundRandom;
                filteredBlocks = filteredBlocks.filter(eachBlock => !eachBlock[0].includes(foundRandomOrig));
            }
        }
    } else {
        finalResult = 'No results for your Random Block search!';
    }
%><% finalResult %>