link draft + insert backlink

script

const backlinkSectionTitle = "backlinks"

linkDraftFromSelectionAtCurrentCursorPosition();


function linkDraftFromSelectionAtCurrentCursorPosition() {
    let d = getDraftFromSelection()
    if (!d) {
        // no draft was selected → terminate
        app.displayInfoMessage("no draft selected")
        return 0
    }

    // a draft was selected
    insertLinkToDraft(d)
    insertLinkBacklinkToDestinationDraftFromSourceDraft(draft, d)
}

/**
 * let the user select a Draft with Drafts select interface
 * @returns Draft
 */
function getDraftFromSelection() {
    return app.selectDraft();
}

/**
 * insert a link to the given Draft at the current cursor position
 * @param {Draft} destinationDraft the Draft you want to link to
 */
function insertLinkToDraft(destinationDraft) {
    editor.setSelectedText(`[[${destinationDraft.displayTitle}]]`);
}

/**
 * insert a backlink to the sourceDraft at the linkedDraftsSection in the destinationDraft
 * @param {Draft} sourceDraft the Draft you want to link from
 * @param {Draft} destinationDraft the Draft where you want to insert the link to the sourceDraft
 */
function insertLinkBacklinkToDestinationDraftFromSourceDraft(sourceDraft, destinationDraft) {
    // don't allow linking to the same draft
    if (sourceDraft == destinationDraft) {
        return 0
    }
    let linkText = `[[${sourceDraft.displayTitle}]]`
    const backlinkSectionStartingText = `---\n\n## `+ backlinkSectionTitle + `\n\n`
    //check if text is already in given draft d
    if (destinationDraft.content.includes(backlinkSectionStartingText)) {
        // already present, only add link
        // check if link is already exisitng
        let backLinksSectionText = destinationDraft.content.split(backlinkSectionStartingText)[1]
        if (!backLinksSectionText.includes(linkText)) {
            destinationDraft.content = destinationDraft.content.trim() + "\n- " + linkText
        }
    } else {
        // its the first backlink - add section marker and link
        destinationDraft.content = destinationDraft.content.trim() + "\n\n" + backlinkSectionStartingText + "- " + linkText
    }
    destinationDraft.update()
}