added plugin files

plugins/filters/suggestIssues/LICENSE

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+MIT License
+
+Copyright (c) 2024 LinearB
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

plugins/filters/suggestIssues/README.md

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+
+--8<-- "plugins/filters/askAI/reference.md"
+
+
+??? note "Plugin Code: askAI"
+    ```javascript
+    --8<-- "plugins/filters/askAI/index.js"
+    ```
+    <div class="result" markdown>
+    <span>
+    </span>
+    </div>
+
+
+??? example "gitStream CM Example: askAI"
+    ```yaml+jinja
+    --8<-- "plugins/filters/askAI/askAI.cm"
+    ```
+    <div class="result" markdown>
+    <span>
+    </span>
+    </div>
+
+[Download Source Code](https://github.com/linear-b/gitstream/tree/main/plugins/filters/askAI)

plugins/filters/suggestIssues/index.js

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+/**
+ * @module suggestIssues
+ * @description Fetches ticket recommendations based on given pull request details.
+ * @param {object} pr - The pull request object containing title, author, and created_at properties.
+ * @param {string} apiKey - The API key used to authenticate requests.
+ * @returns {Array} Returns an array of suggested issues related to the current Pull Request.
+ * @example {{ pr | suggestIssues(env.LINEARB_TOKEN) }}
+ * @license MIT
+**/
+
+const suggestIssues = async (pr, branch, apiKey, callback) => {
+  const url =
+    "https://public-api.linearb.io/api/v1/inference/get_ticket_recommendation";
+
+  const requestData = {
+    request_id: `${Date.now()}-${Math.random().toString(36).substr(2, 9)}`, // <-- local UUID per call
+    pull_request: {
+      title: pr.title, // PR title
+      issuer_name: pr.author, // PR author
+      created_at: pr.created_at, // PR creation date
+      branch_name: branch.name, // PR branch name
+    },
+  };
+
+  const result = await fetch(url, {
+    method: "POST",
+    headers: {
+      "x-api-key": apiKey,
+      "Content-Type": "application/json",
+      "accept": "application/json",
+    },
+    body: JSON.stringify(requestData),
+  })
+    .then((response) => response.json())
+    .then((data) => data)
+    .catch((error) => console.log("Error:", error));
+
+  if (result && result.recommendations && result.recommendations.jira_tickets) {
+    // Extract the first 3 issues
+    const issues = result.recommendations.jira_tickets.slice(0, 3);
+
+    // Map to the desired object format containing the issue URL and issue title
+    const issuesMarkdown = issues
+      .map((issue) => ({
+        url: issue.url,
+        title: issue.title.replace(/\n/g, "").trim(),
+        key: issue.issue_provider_key,
+        score: issue.similarity_score,
+      }))
+      // Map to the desired object format containing the issue URL and issue title
+      .map((issue) => `- [ ] [${issue.key}](${issue.url}) ${issue.title} _(score: ${issue.score.toFixed(2)})_ `)
+      .join("\\n");
+    console.log("suggestedIssues:", {issuesMarkdown});
+
+    return callback(null, issuesMarkdown);
+  } else if (result && result.recommendations && Array.isArray(result.recommendations.jira_tickets) && result.recommendations.jira_tickets.length === 0) {
+    console.log("No issues found.", JSON.stringify(result, null, 2));
+    return callback(null, "No related issues found. The pull request title and the author were used to search the Jira board, but no good match was found.");
+  } else {
+    console.log("Invalid response structure:", JSON.stringify(result, null, 2) );
+    return callback(null, "Error: Service returned an invalid response structure.");
+  }
+};
+
+module.exports = {
+    async: true,
+    filter: suggestIssues
+}

plugins/filters/suggestIssues/reference.md

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+<a name="module_generateDescription"></a>
+
+## suggestIssues
+A gitStream plugin to suggest issues to link to the PR
+
+![Example PR description](screenshots/suggestIssues.png)
+
+**Returns**: <code>\[String\]</code> - Returns a list of suggested issues
+**License**: MIT
+
+| Param  | Type     | Description                                      |
+| ------ | -------- | ------------------------------------------------ |
+| pr     | `Object` | The pull request object from gitStream's context |
+| apiKey | `string` | The API key used to authenticate requests.       |
+
+
+**Example**
+
+```yaml
+{{ pr | suggestIssues(env.LINEARB_TOKEN) }}
+```

plugins/filters/suggestIssues/suggestIssues.cm

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+# -*- mode: yaml -*-
+
+manifest:
+  version: 1.0
+
+automations:
+  # Add comment that suggests tickets for this PR when there is no linked
+  # ticket in the title or description
+  suggest_issues:
+    on:
+      - label_added
+    if:
+      - {{ pr.labels | match(term='suggest-ticket') | some }}
+    run:
+      - action: add-comment@v1
+        args:
+          comment: |
+            Select one of the suggested issues to link to this PR. Once you make a selection, gitStream will automatically update the PR title and description with the selected issue key (taking into account issues opened up to the last 2 hours).
+
+            {{ pr | suggestedIssues(branch, env.TICKET_SUGGESTION_TOKEN) }}
+
+            *✨ This list was created using LinearB’s AI service*
+
+  # If the PR author has indicated that they used a specific issue,
+  # add it to the PR description and title
+  add_selected_issue_to_pr:
+    if:
+      - {{ pr.comments | filter(attr='commenter', term='gitstream-cm') | filter (attr='content', regex=r/\- \[x\]/) | some }}
+      - {{ not (has.jira_ticket_in_title or has.jira_ticket_in_desc) }}
+    run:
+      - action: update-title@v1
+        args:
+          concat_mode: prepend
+          title: |
+            {{ selected_issue_key }} -
+      - action: update-description@v1
+        args:
+          concat_mode: prepend
+          description: |
+            Jira issue: {{ selected_issue_key }}
+
+selected_issue_key: {{ pr.comments | filter(attr='commenter', term='gitstream-cm') | map(attr='content') | filter (regex=r/\- \[x\].*/) | first | capture(regex=r/\b[A-Za-z]+-\d+\b/) }}
+
+has:
+  jira_ticket_in_title: {{ pr.title | includes(regex=r/\b[A-Za-z]+-\d+\b/) }}
+  jira_ticket_in_desc: {{ pr.description | includes(regex=r/atlassian.net\/browse\/\w{1,}-\d{3,4}/) }}