From 0fa443c3f24d0fc2693b166dc86f74b83c5a31e0 Mon Sep 17 00:00:00 2001
From: Leigh Morresi <275001+dgtlmoon@users.noreply.github.com>
Date: Mon, 15 Mar 2021 22:26:50 +0100
Subject: [PATCH] Proof of concept, view as a stream

---
 backend/__init__.py                      | 63 ++++++++++++++++++++++-
 backend/static/css/styles.css            |  5 ++
 backend/store.py                         |  6 +++
 backend/templates/watch-diff-stream.html | 12 +++++
 backend/templates/watch-overview.html    | 62 +----------------------
 backend/templates/watch-table.html       | 64 ++++++++++++++++++++++++
 6 files changed, 150 insertions(+), 62 deletions(-)
 create mode 100644 backend/templates/watch-diff-stream.html
 create mode 100644 backend/templates/watch-table.html

diff --git a/backend/__init__.py b/backend/__init__.py
index 00b0ba81f..720838ca9 100644
--- a/backend/__init__.py
+++ b/backend/__init__.py
@@ -99,6 +99,8 @@ def changedetection_app(config=None, datastore_o=None):
         global messages
 
         limit_tag = request.args.get('tag')
+        rss = request.args.get('rss')
+        mode = request.args.get('mode')
 
         # Sort by last_changed and add the uuid which is usually the key..
         sorted_watches = []
@@ -119,7 +121,63 @@ def changedetection_app(config=None, datastore_o=None):
         sorted_watches.sort(key=lambda x: x['last_changed'], reverse=True)
 
         existing_tags = datastore.get_all_tags()
-        rss = request.args.get('rss')
+
+        if mode == 'stream':
+            import difflib
+
+            import pprint
+            streams = []
+
+            extra_stylesheets = ['/static/css/diff.css']
+            for watch in sorted_watches:
+                if not watch['viewed']:
+
+                    # get last two date keys
+                    dates = list(watch['history'].keys())
+                    # Convert to int, sort and back to str again
+                    dates = [int(i) for i in dates]
+                    dates.sort(reverse=True)
+                    dates = [str(i) for i in dates]
+                    print ("OK", watch['uuid'])
+
+                    if len(dates) < 2:
+                        print ("Skipping", watch['url'])
+                        continue
+                    else:
+                        try:
+                            path = datastore.data['watching'][watch['uuid']]['history'][str(dates[1])]
+                            with open(path,
+                                      encoding='utf-8') as file:
+                                txt1=[line.rstrip() for line in file.readlines()]
+
+                            path = datastore.data['watching'][watch['uuid']]['history'][str(dates[0])]
+                            with open(path,
+                                      encoding='utf-8') as file:
+                                txt2 = [line.rstrip() for line in file.readlines()]
+                        except FileNotFoundError:
+                            print ("Skipping", watch['url'])
+                            continue
+
+                        df = list(difflib.unified_diff(txt1, txt2,n=1))
+                        diff_entry=[]
+                        for line in df:
+                            if line[0] == '-' or line[0] == '+':
+                                diff_entry.append(line)
+
+
+                        # pprint(df)
+                        #s = pprint.pformat(df)
+                        streams.append(diff_entry)
+
+
+            print ("###########", len(streams))
+
+            output = render_template("watch-diff-stream.html",
+                                     streams=streams,
+                                     extra_stylesheets=extra_stylesheets
+                                     )
+            return output
+
 
         if rss:
             fg = FeedGenerator()
@@ -143,7 +201,8 @@ def changedetection_app(config=None, datastore_o=None):
             return response
 
         else:
-            output = render_template("watch-overview.html",
+            #table = render_template('watch-table.html', watches=sorted_watches)
+            output = render_template("watch-table.html",
                                      watches=sorted_watches,
                                      messages=messages,
                                      tags=existing_tags,
diff --git a/backend/static/css/styles.css b/backend/static/css/styles.css
index da504eef5..2f5e61533 100644
--- a/backend/static/css/styles.css
+++ b/backend/static/css/styles.css
@@ -266,3 +266,8 @@ footer {
 #new-version-text a{
     color: #e07171;
 }
+
+#diff-stream {
+    font-size: 10px;
+    white-space: pre-wrap;
+}
diff --git a/backend/store.py b/backend/store.py
index c44a40705..2e467b7e1 100644
--- a/backend/store.py
+++ b/backend/store.py
@@ -228,6 +228,12 @@ class ChangeDetectionStore:
     # result_obj from fetch_site_status.run()
     def save_history_text(self, uuid, result_obj, contents):
 
+        output_path = "{}/{}".format(self.datastore_path, uuid)
+        try:
+            os.mkdir(output_path)
+        except FileExistsError:
+            pass
+
         output_path = "{}/{}".format(self.datastore_path, uuid)
         fname = "{}/{}-{}.stripped.txt".format(output_path, result_obj['previous_md5'], str(time.time()))
         with open(fname, 'w') as f:
diff --git a/backend/templates/watch-diff-stream.html b/backend/templates/watch-diff-stream.html
new file mode 100644
index 000000000..7dca200d5
--- /dev/null
+++ b/backend/templates/watch-diff-stream.html
@@ -0,0 +1,12 @@
+{% extends 'watch-overview.html' %}
+{% block innercontent %}
+Entries: {{ streams|length }}
+
+<div id="diff-stream" class="edit-form">
+    {% for item in streams %}
+        {{ loop.index }}
+{% for diff in item %}{% if diff[0] =='+' %}<ins>{{ diff }}</ins>{% endif %}{% if diff[0] =='-' %}<del>{{ diff }}</del>{% endif %}
+        {% endfor %}
+    {% endfor %}
+</div>
+{% endblock %}
\ No newline at end of file
diff --git a/backend/templates/watch-overview.html b/backend/templates/watch-overview.html
index e17c4ffab..50f5ccd2a 100644
--- a/backend/templates/watch-overview.html
+++ b/backend/templates/watch-overview.html
@@ -24,67 +24,9 @@
     </div>
 
     <div id="watch-table-wrapper">
-        <table class="pure-table pure-table-striped watch-table">
-            <thead>
-            <tr>
-                <th>#</th>
-                <th></th>
-                <th>Last Checked</th>
-                <th>Last Changed</th>
-                <th></th>
-            </tr>
-            </thead>
-            <tbody>
+    {% block innercontent %}
 
-
-            {% for watch in watches %}
-            <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 %}">
-                <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>
-                    {% if watch.last_error is defined and watch.last_error != False %}
-                    <div class="fetch-error">{{ watch.last_error }}</div>
-                    {% endif %}
-                    {% if not active_tag %}
-                    <span class="watch-tag-list">{{ watch.tag}}</span>
-                    {% endif %}
-                </td>
-                <td>{{watch|format_last_checked_time}}</td>
-                <td>{% if watch.history|length >= 2 and watch.last_changed %}
-                    {{watch.last_changed|format_timestamp_timeago}}
-                    {% else %}
-                    Not yet
-                    {% endif %}
-                </td>
-                <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/{{ 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 %}
-                </td>
-            </tr>
-            {% endfor %}
-            </tbody>
-        </table>
-        <ul id="post-list-buttons">
-            {% if has_unviewed %}
-            <li>
-                <a href="/api/mark-all-viewed" class="pure-button button-tag ">Mark all viewed</a>
-            </li>
-            {% endif %}
-            <li>
-               <a href="/api/checknow{% if active_tag%}?tag={{active_tag}}{%endif%}" class="pure-button button-tag ">Recheck
-                all {% if active_tag%}in "{{active_tag}}"{%endif%}</a>
-            </li>
-            <li>
-                <a href="{{ url_for('index', tag=active_tag , rss=true)}}"><img id="feed-icon" src="/static/images/Generic_Feed-icon.svg" height="15px"></a>
-            </li>
-        </ul>
+    {% endblock %}
     </div>
 </div>
 {% endblock %}
\ No newline at end of file
diff --git a/backend/templates/watch-table.html b/backend/templates/watch-table.html
new file mode 100644
index 000000000..05bb8fdb5
--- /dev/null
+++ b/backend/templates/watch-table.html
@@ -0,0 +1,64 @@
+{% extends 'watch-overview.html' %}
+{% block innercontent %}
+        <table class="pure-table pure-table-striped watch-table">
+            <thead>
+            <tr>
+                <th>#</th>
+                <th></th>
+                <th>Last Checked</th>
+                <th>Last Changed</th>
+                <th></th>
+            </tr>
+            </thead>
+            <tbody>
+
+
+            {% for watch in watches %}
+            <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 %}">
+                <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>
+                    {% if watch.last_error is defined and watch.last_error != False %}
+                    <div class="fetch-error">{{ watch.last_error }}</div>
+                    {% endif %}
+                    {% if not active_tag %}
+                    <span class="watch-tag-list">{{ watch.tag}}</span>
+                    {% endif %}
+                </td>
+                <td>{{watch|format_last_checked_time}}</td>
+                <td>{% if watch.history|length >= 2 and watch.last_changed %}
+                    {{watch.last_changed|format_timestamp_timeago}}
+                    {% else %}
+                    Not yet
+                    {% endif %}
+                </td>
+                <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/{{ 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 %}
+                </td>
+            </tr>
+            {% endfor %}
+            </tbody>
+        </table>
+        <ul id="post-list-buttons">
+            {% if has_unviewed %}
+            <li>
+                <a href="/api/mark-all-viewed" class="pure-button button-tag ">Mark all viewed</a>
+            </li>
+            {% endif %}
+            <li>
+               <a href="/api/checknow{% if active_tag%}?tag={{active_tag}}{%endif%}" class="pure-button button-tag ">Recheck
+                all {% if active_tag%}in "{{active_tag}}"{%endif%}</a>
+            </li>
+            <li>
+                <a href="{{ url_for('index', tag=active_tag , rss=true)}}"><img id="feed-icon" src="/static/images/Generic_Feed-icon.svg" height="15px"></a>
+            </li>
+        </ul>
+{% endblock %}
\ No newline at end of file