From 7a66b69158e60e911a2c1e87f12289f30138397d Mon Sep 17 00:00:00 2001
From: dgtlmoon <dgtlmoon@gmail.com>
Date: Sat, 12 Feb 2022 22:48:29 +0100
Subject: [PATCH] Some work around diff viewing

---
 changedetectionio/__init__.py                 | 28 +++++++++++++---
 changedetectionio/templates/diff-image.html   | 33 +++++++++++++++++++
 .../templates/preview-image.html              | 13 ++++++++
 changedetectionio/templates/preview.html      |  2 +-
 4 files changed, 70 insertions(+), 6 deletions(-)
 create mode 100644 changedetectionio/templates/diff-image.html
 create mode 100644 changedetectionio/templates/preview-image.html

diff --git a/changedetectionio/__init__.py b/changedetectionio/__init__.py
index bb1dd457..1535fd32 100644
--- a/changedetectionio/__init__.py
+++ b/changedetectionio/__init__.py
@@ -695,7 +695,7 @@ def changedetection_app(config=None, datastore_o=None):
     @app.route("/diff/<string:uuid>", methods=['GET'])
     @login_required
     def diff_history_page(uuid):
-
+        from changedetectionio import content_fetcher
         # More for testing, possible to return the first/only
         if uuid == 'first':
             uuid = list(datastore.data['watching'].keys()).pop()
@@ -734,7 +734,13 @@ def changedetection_app(config=None, datastore_o=None):
         with open(previous_file, 'r') as f:
             previous_version_file_contents = f.read()
 
-        output = render_template("diff.html", watch_a=watch,
+        if ('content-type' in watch and content_fetcher.supported_binary_type(watch['content-type'])):
+            template = "diff-image.html"
+        else:
+            template = "diff.html"
+
+        output = render_template(template,
+                                 watch_a=watch,
                                  newest=newest_version_file_contents,
                                  previous=previous_version_file_contents,
                                  extra_stylesheets=extra_stylesheets,
@@ -751,6 +757,7 @@ def changedetection_app(config=None, datastore_o=None):
     @app.route("/preview/<string:uuid>", methods=['GET'])
     @login_required
     def preview_page(uuid):
+        from changedetectionio import content_fetcher
 
         # More for testing, possible to return the first/only
         if uuid == 'first':
@@ -765,14 +772,25 @@ def changedetection_app(config=None, datastore_o=None):
             return redirect(url_for('index'))
 
         newest = list(watch['history'].keys())[-1]
-        with open(watch['history'][newest], 'r') as f:
-            content = f.readlines()
+        fname = watch['history'][newest]
+
+        if ('content-type' in watch and content_fetcher.supported_binary_type(watch['content-type'])):
+            template = "preview-image.html"
+            content = fname
+        else:
+            template = "preview.html"
+            try:
+                with open(fname, 'r') as f:
+                    content = f.read()
+            except:
+                content = "Cant read {}".format(fname)
 
         output = render_template("preview.html",
                                  content=content,
                                  extra_stylesheets=extra_stylesheets,
                                  current_diff_url=watch['url'],
-                                 uuid=uuid)
+                                 uuid=uuid,
+                                 watch=watch)
         return output
 
     @app.route("/settings/notification-logs", methods=['GET'])
diff --git a/changedetectionio/templates/diff-image.html b/changedetectionio/templates/diff-image.html
new file mode 100644
index 00000000..3d79ceae
--- /dev/null
+++ b/changedetectionio/templates/diff-image.html
@@ -0,0 +1,33 @@
+{% extends 'base.html' %}
+
+{% block content %}
+
+<div id="settings">
+    <h1>Differences</h1>
+    <form class="pure-form " action="" method="GET">
+        <fieldset>
+            {% if versions|length >= 1 %}
+            <label for="diff-version">Compare newest (<span id="current-v-date"></span>) with</label>
+            <select id="diff-version" name="previous_version">
+                {% for version in versions %}
+                <option value="{{version}}" {% if version== current_previous_version %} selected="" {% endif %}>
+                    {{version}}
+                </option>
+                {% endfor %}
+            </select>
+            <button type="submit" class="pure-button pure-button-primary">Go</button>
+            {% endif %}
+        </fieldset>
+    </form>
+
+</div>
+
+<div id="diff-ui">
+
+</div>
+
+
+<script type="text/javascript" src="{{url_for('static_content', group='js', filename='diff.js')}}"></script>
+
+
+{% endblock %}
\ No newline at end of file
diff --git a/changedetectionio/templates/preview-image.html b/changedetectionio/templates/preview-image.html
new file mode 100644
index 00000000..ad063b09
--- /dev/null
+++ b/changedetectionio/templates/preview-image.html
@@ -0,0 +1,13 @@
+{% extends 'base.html' %}
+
+{% block content %}
+
+<div id="settings">
+    <h1>Current</h1>
+</div>
+
+<div id="diff-ui">
+    image goes here
+</div>
+
+{% endblock %}
\ No newline at end of file
diff --git a/changedetectionio/templates/preview.html b/changedetectionio/templates/preview.html
index 23d80b04..21da0fd0 100644
--- a/changedetectionio/templates/preview.html
+++ b/changedetectionio/templates/preview.html
@@ -11,7 +11,7 @@
         <tbody>
         <tr>
             <td id="diff-col">
-                <span id="result">{% for row in content %}{{row}}{% endfor %}</span>
+                <span id="result">{{content}}</span>
             </td>
         </tr>
         </tbody>