feat: content link states

2019-09-02 15:33:40 -04:00
parent e491af44ad
commit efab00fa0c
7 changed files with 203 additions and 12 deletions
--- a/server/modules/rendering/html-core/renderer.js
+++ b/server/modules/rendering/html-core/renderer.js
@@ -1,6 +1,8 @@
 const _ = require('lodash')
 const cheerio = require('cheerio')

+/* global WIKI */
+
 module.exports = {
  async render() {
    const $ = cheerio.load(this.input)
@@ -14,6 +16,98 @@ module.exports = {
      renderer.init($, child.config)
    }

+    // --------------------------------
+    // Detect internal / external links
+    // --------------------------------
+
+    let internalRefs = []
+    const reservedPrefixes = /^\/[a-z]\//gi
+
+    const isHostSet = WIKI.config.host.length > 7 && WIKI.config.host !== 'http://'
+    if (!isHostSet) {
+      WIKI.logger.warn('Host is not set. You must set the Site Host under General in the Administration Area!')
+    }
+
+    $('a').each((i, elm) => {
+      let href = $(elm).attr('href')
+
+      // -> Ignore empty links
+      if (!href || href.length < 1) {
+        return
+      }
+
+      // -> Strip host from local links
+      if (isHostSet && href.indexOf(WIKI.config.site.host) === 0) {
+        href = href.replace(WIKI.config.site.host, '')
+      }
+
+      // -> Assign local / external tag
+      if (href.indexOf('://') < 0) {
+        // -> Remove trailing slash
+        if (_.endsWith('/')) {
+          href = href.slice(0, -1)
+        }
+
+        // -> Check for system prefix
+        if (!reservedPrefixes.test(href)) {
+          $(elm).addClass(`is-internal-link`)
+
+          // -> Reformat paths
+          if (href.indexOf('/') !== 0) {
+            href = `/${this.page.localeCode}/${this.page.path}/${href}`
+          } else if (href.charAt(3) !== '/') {
+            href = `/${this.page.localeCode}${href}`
+          }
+
+          // -> Save internal references
+          internalRefs.push({
+            localeCode: href.substring(1, 3),
+            path: _.head(href.substring(4).split('#'))
+          })
+        } else {
+          $(elm).addClass(`is-system-link`)
+        }
+      } else {
+        $(elm).addClass(`is-external-link`)
+      }
+
+      // -> Update element
+      $(elm).attr('href', href)
+    })
+
+    // --------------------------------
+    // Detect internal link states
+    // --------------------------------
+
+    if (internalRefs.length > 0) {
+      // -> Find matching pages
+      const results = await WIKI.models.pages.query().column('path', 'localeCode').where(builder => {
+        internalRefs.forEach((ref, idx) => {
+          if (idx < 1) {
+            builder.where(ref)
+          } else {
+            builder.orWhere(ref)
+          }
+        })
+      })
+
+      // -> Apply tag to internal links for found pages
+      $('a.is-internal-link').each((i, elm) => {
+        const href = $(elm).attr('href')
+        const hrefObj = {
+          localeCode: href.substring(1, 3),
+          path: _.head(href.substring(4).split('#'))
+        }
+        if (_.some(results, r => {
+          return r.localeCode === hrefObj.localeCode && r.path === hrefObj.path
+        })) {
+          $(elm).addClass(`is-valid-page`)
+        } else {
+          $(elm).addClass(`is-invalid-page`)
+        }
+      })
+    }
+
    return $.html('body').replace('<body>', '').replace('</body>', '')
  }
 }