Issue #14 - Tweaks to edit, create ignore text, tests for ignore text, integrate ignore text

backend/__init__.py

@@ -151,13 +151,16 @@ def changedetection_app(config=None, datastore_o=None):
 
         return render_template("scrub.html")
 
-    @app.route("/edit", methods=['GET', 'POST'])
-    def edit_page():
+    @app.route("/edit/<string:uuid>", methods=['GET', 'POST'])
+    def edit_page(uuid):
         global messages
         import validators
 
+        # More for testing, possible to return the first/only
+        if uuid == 'first':
+            uuid = list(datastore.data['watching'].keys()).pop()
+
         if request.method == 'POST':
-            uuid = request.args.get('uuid')
 
             url = request.form.get('url').strip()
             tag = request.form.get('tag').strip()
@@ -172,10 +175,27 @@ def changedetection_app(config=None, datastore_o=None):
                         if len(parts) == 2:
                             extra_headers.update({parts[0].strip(): parts[1].strip()})
 
+            update_obj = {'url': url,
+                          'tag': tag,
+                          'headers': extra_headers
+                          }
+
+            # Ignore text
+            form_ignore_text = request.form.get('ignore-text').strip()
+            ignore_text = []
+            if form_ignore_text:
+                for text in form_ignore_text.split("\n"):
+                    text = text.strip()
+                    if len(text):
+                        ignore_text.append(text)
+
+                # Reset the previous_md5 so we process a new snapshot including stripping ignore text.
+                update_obj['previous_md5'] = ""
+
+            update_obj['ignore_text'] = ignore_text
+
             validators.url(url)  # @todo switch to prop/attr/observer
-            datastore.data['watching'][uuid].update({'url': url,
-                                                     'tag': tag,
-                                                     'headers': extra_headers})
+            datastore.data['watching'][uuid].update(update_obj)
             datastore.needs_write = True
 
             messages.append({'class': 'ok', 'message': 'Updated watch.'})
@@ -183,8 +203,6 @@ def changedetection_app(config=None, datastore_o=None):
             return redirect(url_for('index'))
 
         else:
-
-            uuid = request.args.get('uuid')
             output = render_template("edit.html", uuid=uuid, watch=datastore.data['watching'][uuid], messages=messages)
 
         return output

backend/fetch_site_status.py

@@ -11,6 +11,15 @@ class perform_site_check():
         super().__init__(*args, **kwargs)
         self.datastore = datastore
 
+    def strip_ignore_text(self, content, list_ignore_text):
+
+        output=[]
+        for line in content.splitlines():
+            if not any(skip_text in line for skip_text in list_ignore_text):
+                output.append(line)
+
+        return "\n".join(output)
+
     def run(self, uuid):
         timestamp = int(time.time())  # used for storage etc too
         stripped_text_from_html = False
@@ -76,7 +85,16 @@ class perform_site_check():
             if not len(r.text):
                 update_obj["last_error"] = "Empty reply"
 
-            fetched_md5 = hashlib.md5(stripped_text_from_html.encode('utf-8')).hexdigest()
+            content = stripped_text_from_html.encode('utf-8')
+
+            # If there's text to skip
+            # @todo we could abstract out the get_text() to handle this cleaner
+            if len(self.datastore.data['watching'][uuid]['ignore_text']):
+                content = self.strip_ignore_text(content, self.datastore.data['watching'][uuid]['ignore_text'])
+
+            fetched_md5 = hashlib.md5(content).hexdigest()
+
+
 
             # could be None or False depending on JSON type
             if self.datastore.data['watching'][uuid]['previous_md5'] != fetched_md5:

backend/pytest.ini

@@ -1,2 +1,4 @@
 [pytest]
 addopts = --no-start-live-server --live-server-port=5005
+live_server_scope = function
+

backend/store.py

@@ -53,7 +53,8 @@ class ChangeDetectionStore:
             'previous_md5': "",
             'uuid': str(uuid_builder.uuid4()),
             'headers': {},  # Extra headers to send
-            'history': {}  # Dict of timestamp and output stripped filename
+            'history': {},  # Dict of timestamp and output stripped filename
+            'ignore_text': [] # List of text to ignore when calculating the comparison checksum
         }
 
         if path.isfile('/source.txt'):

backend/templates/edit.html

@@ -18,10 +18,26 @@
                 <span class="pure-form-message-inline">Grouping tags, can be a comma separated list.</span>
             </div>
 
+            <!-- @todo: move to tabs --->
+            <fieldset class="pure-group">
+                <label for="ignore-text">Ignore text</label>
+
+                <textarea id="ignore-text" name="ignore-text" class="pure-input-1-2" placeholder=""
+                          style="width: 100%;
+                            font-family:monospace;
+                            white-space: pre;
+                            overflow-wrap: normal;
+                            overflow-x: scroll;" rows="5">{% for value in watch.ignore_text %}{{ value }}
+{% endfor %}</textarea>
+                <span class="pure-form-message-inline">Each line will be processed separately as an ignore rule.</span>
+
+            </fieldset>
+
+            <!-- @todo: move to tabs --->
             <fieldset class="pure-group">
                 <label for="headers">Extra request headers</label>
 
-                <textarea id=headers name="headers" class="pure-input-1-2" placeholder="Example
+                <textarea id="headers" name="headers" class="pure-input-1-2" placeholder="Example
 Cookie: foobar
 User-Agent: wonderbra 1.0"
                           style="width: 100%;
@@ -33,6 +49,8 @@ User-Agent: wonderbra 1.0"
                 <br/>
 
             </fieldset>
+
+
             <div class="pure-control-group">
                 <button type="submit" class="pure-button pure-button-primary">Save</button>
             </div>

backend/templates/watch-overview.html

@@ -43,7 +43,8 @@
             <tr id="{{ watch.uuid }}"
                 class="{{ loop.cycle('pure-table-odd', 'pure-table-even') }}
                 {% if watch.last_error is defined and watch.last_error != False %}error{% endif %}
-                {% if watch.newest_history_key| int > watch.last_viewed| int %}unviewed{% endif %}">
+                {% if watch.newest_history_key| int > watch.last_viewed| int %}unviewed{% endif %}
+                ">
                 <td>{{ loop.index }}</td>
                 <td class="title-col">{{watch.title if watch.title is not none else watch.url}}
                     <a class="external" target=_blank href="{{ watch.url }}"></a>
@@ -64,7 +65,7 @@
                 <td>
                     <a href="/api/checknow?uuid={{ watch.uuid}}{% if request.args.get('tag') %}&tag={{request.args.get('tag')}}{% endif %}"
                        class="pure-button button-small pure-button-primary">Recheck</a>
-                    <a href="/edit?uuid={{ watch.uuid}}" class="pure-button button-small pure-button-primary">Edit</a>
+                    <a href="/edit/{{ watch.uuid}}" class="pure-button button-small pure-button-primary">Edit</a>
                     {% if watch.history|length >= 2 %}
                     <a href="/diff/{{ watch.uuid}}" class="pure-button button-small pure-button-primary">Diff</a>
                     {% endif %}

backend/tests/conftest.py

@@ -13,7 +13,6 @@ import os
 
 global app
 
-
 @pytest.fixture(scope='session')
 def app(request):
     """Create application for the tests."""
@@ -37,7 +36,12 @@ def app(request):
     def teardown():
         datastore.stop_thread = True
         app.config['STOP_THREADS'] = True
+        try:
+            os.unlink("{}/url-watches.json".format(datastore_path))
+        except FileNotFoundError:
+            # This is fine in the case of a failure.
+            pass
 
-    request.addfinalizer(teardown)
 
+    request.addfinalizer(teardown)
     return app

backend/tests/test_ignore_text.py

@@ -0,0 +1,135 @@
+#!/usr/bin/python3
+
+import time
+from flask import url_for
+from urllib.request import urlopen
+
+
+# Unit test of the stripper
+def test_strip_text_func():
+    from backend import fetch_site_status
+
+    test_content = """
+    Some content
+    is listed here
+    
+    but sometimes we want to remove the lines.
+    
+    but not always."""
+
+    original_length = len(test_content.splitlines())
+
+    fetcher = fetch_site_status.perform_site_check(datastore=False)
+
+    ignore_lines = ["sometimes"]
+
+    stripped_content = fetcher.strip_ignore_text(test_content, ignore_lines)
+
+    # Should be one line shorter
+    assert len(stripped_content.splitlines()) == original_length - 1
+
+    assert "sometimes" not in stripped_content
+    assert "Some content" in stripped_content
+
+
+def set_original_response():
+    test_return_data = """<html>
+       <body>
+     Some initial text</br>
+     <p>Which is across multiple lines</p>
+     </br>
+     So let's see what happens.  </br>
+     </body>
+     </html>
+
+    """
+
+    with open("test-datastore/output.txt", "w") as f:
+        f.write(test_return_data)
+
+
+# Is the same but includes ZZZZZ, 'ZZZZZ' is the last line in ignore_text
+def set_modified_response():
+    test_return_data = """<html>
+       <body>
+     Some initial text</br>
+     <p>Which is across multiple lines</p>
+     <P>ZZZZZ</P>
+     </br>
+     So let's see what happens.  </br>
+     </body>
+     </html>
+
+    """
+
+    with open("test-datastore/output.txt", "w") as f:
+        f.write(test_return_data)
+
+
+def test_check_ignore_text_functionality(client, live_server):
+    sleep_time_for_fetch_thread = 5
+
+    ignore_text = "XXXXX\nYYYYY\nZZZZZ"
+    set_original_response()
+
+    @live_server.app.route('/test-ignore-endpoint')
+    def test_ignore_endpoint():
+        # Tried using a global var here but didn't seem to work, so reading from a file instead.
+        with open("test-datastore/output.txt", "r") as f:
+            return f.read()
+
+    live_server.start()
+
+    # Give the endpoint time to spin up
+    time.sleep(1)
+
+    # Add our URL to the import page
+    test_url = url_for('test_ignore_endpoint', _external=True)
+    res = client.post(
+        url_for("import_page"),
+        data={"urls": test_url},
+        follow_redirects=True
+    )
+    assert b"1 Imported" in res.data
+
+    # Goto the edit page, add our ignore text
+    # Add our URL to the import page
+    res = client.post(
+        url_for("edit_page", uuid="first"),
+        data={"ignore-text": ignore_text, "url": test_url, "tag": "", "headers": ""},
+        follow_redirects=True
+    )
+    assert b"Updated watch." in res.data
+
+    # Check it saved
+    res = client.get(
+        url_for("edit_page", uuid="first"),
+    )
+    assert bytes(ignore_text.encode('utf-8')) in res.data
+
+    # Trigger a check
+    client.get(url_for("api_watch_checknow"), follow_redirects=True)
+
+    # Give the thread time to pick it up
+    time.sleep(sleep_time_for_fetch_thread)
+
+    # It should report nothing found (no new 'unviewed' class)
+    res = client.get(url_for("index"))
+    assert b'unviewed' not in res.data
+    assert b'/test-ignore-endpoint' in res.data
+
+    set_modified_response()
+
+    # Trigger a check
+    client.get(url_for("api_watch_checknow"), follow_redirects=True)
+
+    # Give the thread time to pick it up
+    time.sleep(sleep_time_for_fetch_thread)
+
+    # It should report nothing found (no new 'unviewed' class)
+    res = client.get(url_for("index"))
+    assert b'unviewed' not in res.data
+    assert b'/test-ignore-endpoint' in res.data
+
+    live_server.stop()
+