[Console] Fix documentation link (#188977)

## Summary

Fixes #186639

This PR changes the helper function that parses a line and return url
path tokens and url params tokens that are used in the autocomplete
system as input. This PR adds a filter to remove any empty tokens from
the results. This should make the function work for urls starting with a
slash, for example `/_search`.

e2e tests for the documenation action are currently skipped as flaky,
the fix for the tests is in #186641
### Checklist

Delete any items that are not applicable to this PR.

- [ ] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)
- [ ]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [ ] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [ ] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed
- [ ] Any UI touched in this PR is usable by keyboard only (learn more
about [keyboard accessibility](https://webaim.org/techniques/keyboard/))
- [ ] Any UI touched in this PR does not create any new axe failures
(run axe in browser:
[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),
[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))
- [ ] If a plugin configuration key changed, check if it needs to be
allowlisted in the cloud and added to the [docker
list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)
- [ ] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))
- [ ] This was checked for [cross-browser
compatibility](https://www.elastic.co/support/matrix#matrix_browsers)


### Risk Matrix

Delete this section if it is not applicable to this PR.

Before closing this PR, invite QA, stakeholders, and other developers to
identify risks that should be tested prior to the change/feature
release.

When forming the risk matrix, consider some of the following examples
and how they may potentially impact the change:

| Risk | Probability | Severity | Mitigation/Notes |

|---------------------------|-------------|----------|-------------------------|
| Multiple Spaces—unexpected behavior in non-default Kibana Space.
| Low | High | Integration tests will verify that all features are still
supported in non-default Kibana Space and when user switches between
spaces. |
| Multiple nodes—Elasticsearch polling might have race conditions
when multiple Kibana nodes are polling for the same tasks. | High | Low
| Tasks are idempotent, so executing them multiple times will not result
in logical error, but will degrade performance. To test for this case we
add plenty of unit tests around this logic and document manual testing
procedure. |
| Code should gracefully handle cases when feature X or plugin Y are
disabled. | Medium | High | Unit tests will verify that any feature flag
or plugin combination still results in our service operational. |
| [See more potential risk
examples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) |


### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

src/plugins/console/public/application/containers/editor/monaco/utils/autocomplete_utils.ts

@@ -43,10 +43,6 @@ export const getDocumentationLinkFromAutocomplete = (
 ) => {
   // get the url parts from the request url
   const { urlPathTokens } = parseUrl(request.url);
-  // remove the last token, if it's empty
-  if (!urlPathTokens[urlPathTokens.length - 1]) {
-    urlPathTokens.pop();
-  }
   // add the end of url token
   urlPathTokens.push(END_OF_URL_TOKEN);
   const { endpoint } = populateContextForMethodAndUrl(request.method, urlPathTokens);
@@ -127,9 +123,11 @@ export const getUrlPathCompletionItems = (
 
   // get the method and previous url parts for context
   const { method, urlPathTokens } = parseLine(lineContent);
-  // remove the last token that is either empty if the url has like "_search/" as the last char
-  // or it's a word that need to be replaced with autocomplete suggestions like "_search/s"
-  urlPathTokens.pop();
+  // if the line ends with /, then we use all url path tokens for autocomplete suggestions
+  // otherwise, we want to ignore the last token
+  if (!lineContent.trim().endsWith('/')) {
+    urlPathTokens.pop();
+  }
   const { autoCompleteSet } = populateContextForMethodAndUrl(method, urlPathTokens);
 
   const wordUntilPosition = model.getWordUntilPosition(position);

src/plugins/console/public/application/containers/editor/monaco/utils/constants.ts

@@ -15,7 +15,7 @@ export const SELECTED_REQUESTS_CLASSNAME = 'console__monaco_editor__selectedRequ
 
 export const whitespacesRegex = /\s+/;
 export const newLineRegex = /\n/;
-export const slashRegex = /\//;
+export const slashesRegex = /\/+/;
 export const ampersandRegex = /&/;
 export const equalsSignRegex = /=/;
 export const questionMarkRegex = /\?/;

src/plugins/console/public/application/containers/editor/monaco/utils/tokens_utils.test.ts

@@ -6,7 +6,7 @@
  * Side Public License, v 1.
  */
 
-import { parseBody, removeTrailingWhitespaces } from './tokens_utils';
+import { parseBody, removeTrailingWhitespaces, parseUrl } from './tokens_utils';
 
 describe('tokens_utils', () => {
   describe('removeTrailingWhitespaces', () => {
@@ -136,4 +136,18 @@ describe('tokens_utils', () => {
       });
     }
   });
+
+  describe('parseUrl', () => {
+    it('groups more than 1 slashes together when splitting', () => {
+      const url = '_search//test';
+      const result = parseUrl(url);
+      expect(result.urlPathTokens).toEqual(['_search', 'test']);
+    });
+
+    it('filters out empty tokens', () => {
+      const url = '/_search/test/';
+      const result = parseUrl(url);
+      expect(result.urlPathTokens).toEqual(['_search', 'test']);
+    });
+  });
 });

src/plugins/console/public/application/containers/editor/monaco/utils/tokens_utils.ts

@@ -12,7 +12,7 @@ import {
   newLineRegex,
   numberStartRegex,
   questionMarkRegex,
-  slashRegex,
+  slashesRegex,
   whitespacesRegex,
 } from './constants';
 
@@ -48,9 +48,9 @@ export const parseUrl = (
   const urlParts = url.split(questionMarkRegex);
   // 1st part is the url path
   const urlPath = urlParts[0];
-  // try to parse into url path tokens (split on slash)
+  // try to parse into url path tokens (split on slashes, only keep non-empty tokens)
   if (urlPath) {
-    urlPathTokens = urlPath.split(slashRegex);
+    urlPathTokens = urlPath.split(slashesRegex).filter(Boolean);
   }
   // 2nd part is the url params
   const urlParams = urlParts[1];