Issue grantmcconnaughey#60 - Add support for custom comment tag

lintly/backends/github.py

@@ -7,7 +7,7 @@
 
 from github import GithubException, UnknownObjectException, Github
 
-from lintly.constants import LINTLY_IDENTIFIER
+from lintly.config import Config
 from lintly.formatters import (
     build_pr_review_line_comment,
     build_pr_review_body,
@@ -124,7 +124,7 @@ def __init__(self, token, project, context):
         self.context = context
 
     def _should_delete_comment(self, comment):
-        return LINTLY_IDENTIFIER in comment.body
+        return Config.LINTLY_IDENTIFIER in comment.body
 
     @translate_github_exception
     def get_pull_request(self, pr):

lintly/backends/gitlab.py

@@ -7,7 +7,7 @@
 import gitlab
 import requests
 
-from lintly.constants import LINTLY_IDENTIFIER
+from lintly.config import Config
 
 from .base import BaseGitBackend
 from .errors import (
@@ -136,7 +136,7 @@ def delete_pull_request_comments(self, pr):
         mr = project.mergerequests.list(iid=pr)[0]
         client = GitLabAPIClient(self.token, self.user, self.project)
         for note in mr.notes.list(all=True, per_page=DEFAULT_PER_PAGE):
-            if LINTLY_IDENTIFIER in note.body:
+            if Config.LINTLY_IDENTIFIER in note.body:
                 url = '/projects/{project_id}/merge_requests/{mr_id}/notes/{note_id}'.format(
                     project_id=project.id, mr_id=mr.id, note_id=note.id
                 )

lintly/cli.py

@@ -59,6 +59,9 @@
               default=True,
               help=('Whether Lintly should post a PR review with a body. '
                     'The body is not removed after a re-run.'))
+@click.option('--comment-tag',
+              default='',
+              help='A tag used to identify comments from a previous run that should be deleted')
 @click.option('--exit-zero/--no-exit-zero', default=False,
               help=('Whether Lintly should exit with error code indicating '
                     'amount of violations or not. Default false'))

lintly/config.py

@@ -7,8 +7,11 @@
 class Config(object):
     """A Config object that knows how to return configuration from the CLI or Continuous Integration services"""
 
+    LINTLY_IDENTIFIER = '<!-- Automatically posted by Lintly %s -->'
+
     def __init__(self, cli_config):
         self.cli_config = cli_config
+        type(self).LINTLY_IDENTIFIER = type(self).LINTLY_IDENTIFIER % self.comment_tag
 
     def as_dict(self):
         return {
@@ -22,6 +25,7 @@ def as_dict(self):
             'request_changes': self.request_changes,
             'github_check_run_id': self.github_check_run_id,
             'review_body': self.review_body,
+            'comment_tag': self.comment_tag,
         }
 
     @property
@@ -64,6 +68,10 @@ def request_changes(self):
     def review_body(self):
         return self.cli_config['review_body']
 
+    @property
+    def comment_tag(self):
+        return self.cli_config['comment_tag']
+
     @property
     def github_check_run_id(self):
         """The Check Run ID from GitHub Actions.

lintly/constants.py

@@ -1,11 +1,6 @@
 FAIL_ON_ANY = 'any'
 FAIL_ON_NEW = 'new'
 
-# Identifies that a comment came from Lintly. This is used to aid in automatically
-# deleting old PR comments/reviews. This is valid Markdown that is hidden from
-# users in GitHub and GitLab.
-LINTLY_IDENTIFIER = '<!-- Automatically posted by Lintly -->'
-
 # These constants define the actions that lintly might take against a PR concerning reviews, ie.
 # not the commit status
 ACTION_REVIEW_USE_CHECKS = 'use_checks'

lintly/formatters.py

@@ -5,7 +5,7 @@
 
 from jinja2 import Environment, FileSystemLoader
 
-from .constants import LINTLY_IDENTIFIER
+from .config import Config
 
 
 TEMPLATES_PATH = os.path.join(os.path.dirname(__file__), 'templates')
@@ -23,7 +23,7 @@ def build_pr_comment(config, violations):
     :return: The comment
     """
     template = env.get_template('pr_comment.txt')
-    return template.render(violations=violations, LINTLY_IDENTIFIER=LINTLY_IDENTIFIER)
+    return template.render(violations=violations, LINTLY_IDENTIFIER=Config.LINTLY_IDENTIFIER)
 
 
 def build_pr_review_line_comment(violation):
@@ -32,7 +32,7 @@ def build_pr_review_line_comment(violation):
     :return: The comment
     """
     template = env.get_template('pr_review_line_comment.txt')
-    return template.render(violation=violation, LINTLY_IDENTIFIER=LINTLY_IDENTIFIER)
+    return template.render(violation=violation, LINTLY_IDENTIFIER=Config.LINTLY_IDENTIFIER)
 
 
 def build_check_line_comment(violation):
@@ -42,4 +42,4 @@ def build_check_line_comment(violation):
 
 def build_pr_review_body(violations):
     template = env.get_template('pr_review_body.txt')
-    return template.render(violations=violations, LINTLY_IDENTIFIER=LINTLY_IDENTIFIER)
+    return template.render(violations=violations, LINTLY_IDENTIFIER=Config.LINTLY_IDENTIFIER)