From 4966884646ef2b3b884e3fff3a3958ff43c746f0 Mon Sep 17 00:00:00 2001
From: Alexandr Karpov <alexandr.d.karpov@gmail.com>
Date: Thu, 13 Apr 2023 14:41:04 +0300
Subject: [PATCH] added text previews, bug fixes

---
 akarpov/files/previews/__init__.py            |  14 +-
 .../files/previews/application/__init__.py    |   1 +
 akarpov/files/previews/application/zip.py     | 141 ++++++++++++++++++
 akarpov/files/previews/image/basic.py         |   2 +-
 akarpov/files/previews/text/__init__.py       |   1 +
 akarpov/files/previews/text/common.py         |  64 ++++++++
 akarpov/files/previews/text/plain.py          |  23 +++
 akarpov/files/previews/video/basic.py         |   2 +-
 akarpov/files/views.py                        |  18 +--
 .../static/css/tomorrow-night-eighties.css    |  44 ++++++
 akarpov/static/js/jquery.min.js               |   2 +
 akarpov/templates/files/list.html             |   4 +-
 akarpov/templates/files/upload.html           |   2 +-
 13 files changed, 302 insertions(+), 16 deletions(-)
 create mode 100644 akarpov/files/previews/application/__init__.py
 create mode 100644 akarpov/files/previews/application/zip.py
 create mode 100644 akarpov/files/previews/text/__init__.py
 create mode 100644 akarpov/files/previews/text/common.py
 create mode 100644 akarpov/files/previews/text/plain.py
 create mode 100644 akarpov/static/css/tomorrow-night-eighties.css
 create mode 100644 akarpov/static/js/jquery.min.js

diff --git a/akarpov/files/previews/__init__.py b/akarpov/files/previews/__init__.py
index 57cfe9a..51ab277 100644
--- a/akarpov/files/previews/__init__.py
+++ b/akarpov/files/previews/__init__.py
@@ -1,6 +1,9 @@
-from . import audio, image, video
+from . import application, audio, image, text, video
 
 previews = {
+    "application": {
+        "zip": application.zip.view,
+    },
     "audio": {
         "aac": audio.basic.view,
         "mpeg": audio.basic.view,
@@ -14,12 +17,19 @@
         "jpeg": image.basic.view,
         "png": image.basic.view,
         "avif": image.basic.view,
+        "bmp": image.basic.view,
     },
+    "text": {"css": text.common.view, "plain": text.plain.view},
 }
 
+source_code = {}
+for ext in text.common.language_previews.keys():
+    source_code[ext] = text.common.view
+
 extensions = {
     "mp4": video.mp4.view,
     "mp3": audio.basic.view,
     "avif": image.basic.view,
+    "bmp": image.basic.view,
     "mov": video.basic.view,
-}
+} | source_code
diff --git a/akarpov/files/previews/application/__init__.py b/akarpov/files/previews/application/__init__.py
new file mode 100644
index 0000000..6d0dc6b
--- /dev/null
+++ b/akarpov/files/previews/application/__init__.py
@@ -0,0 +1 @@
+from . import zip  # noqa
diff --git a/akarpov/files/previews/application/zip.py b/akarpov/files/previews/application/zip.py
new file mode 100644
index 0000000..95fcae1
--- /dev/null
+++ b/akarpov/files/previews/application/zip.py
@@ -0,0 +1,141 @@
+import zipfile
+from collections import defaultdict
+
+from akarpov.files.models import File
+
+FILE_MARKER = "<files>"
+
+
+def attach(branch, trunk):
+    """
+    Insert a branch of directories on its trunk.
+    """
+    parts = branch.split("/", 1)
+    if len(parts) == 1:  # branch is a file
+        trunk[FILE_MARKER].append(parts[0])
+    else:
+        node, others = parts
+        if node not in trunk:
+            trunk[node] = defaultdict(dict, ((FILE_MARKER, []),))
+        attach(others, trunk[node])
+
+
+def to_li(d, indent=0):
+    """
+    Convert tree like structure to html ul li
+    """
+    res = ""
+    for key, value in d.items():
+        if key != FILE_MARKER:
+            if indent >= 2 or str(key).startswith("."):
+                in_res = (
+                    """
+                <li data-jstree='{ "opened" : false }'>
+                """
+                    + str(key)
+                    + "<ul>"
+                )
+            else:
+                in_res = (
+                    """
+                <li data-jstree='{ "opened" : true }'>
+                """
+                    + str(key)
+                    + "<ul>"
+                )
+            r_res = ""
+            c_res = """</ul></li>"""
+            if isinstance(value, dict):
+                r_res += to_li(value, indent + 1)
+            else:
+                if value is not str and isinstance(value, list):
+                    for v in value:
+                        if v:
+                            r_res += (
+                                """<li data-jstree='{ "opened" : true, "type" : "file" }'>"""
+                                + str(v)
+                                + "</li>"
+                            )
+                else:
+                    if value:
+                        r_res += (
+                            """<li data-jstree='{ "opened" : true, "type" : "file" }'>"""
+                            + str(value)
+                            + "</li>"
+                        )
+            res += in_res + r_res + c_res
+        else:
+            if value is not str and isinstance(value, list):
+                for v in value:
+                    if v:
+                        res += (
+                            """<li data-jstree='{ "opened" : true, "type" : "file" }'>"""
+                            + str(v)
+                            + "</li>"
+                        )
+            else:
+                if value:
+                    res += (
+                        """<li data-jstree='{ "opened" : true, "type" : "file" }'>"""
+                        + str(value)
+                        + "</li>"
+                    )
+    return res
+
+
+def view(file: File) -> (str, str):
+    zip = zipfile.ZipFile(file.file.path)
+
+    root = defaultdict(dict, ((FILE_MARKER, []),))
+    for line in zip.namelist():
+        attach(line, root)
+    r = str(to_li(root))
+
+    static = """
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/themes/default/style.min.css" />
+    """
+    content = (
+        """
+    <div id="jstree_demo_div">
+        <ul data-jstree='{ "opened" : true }>"""
+        + f"""
+            {file.file.path.split("/")[-1]}
+        """
+        + """
+        <li data-jstree='{ "opened" : true }>
+        """
+        + f"""
+            {r}
+        </li>
+    </ul>
+    </div> """
+        + """
+    <script src="/static/js/jquery.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/jstree.min.js"></script>
+    <script>
+    $(function () {
+
+
+$('#jstree_demo_div').jstree({
+    "core" : {
+        "themes" : {
+            "responsive": false
+        }
+    },
+    "types" : {
+        "default" : {
+            "icon" : "bi bi-folder"
+        },
+        "file" : {
+            "icon" : "bi bi-file-earmark-fill"
+        }
+    },
+    "plugins": ["types"]
+});
+
+
+     });
+    </script>
+    """
+    )
+    return static, content
diff --git a/akarpov/files/previews/image/basic.py b/akarpov/files/previews/image/basic.py
index 4896e8a..af494d6 100644
--- a/akarpov/files/previews/image/basic.py
+++ b/akarpov/files/previews/image/basic.py
@@ -13,7 +13,7 @@ def view(file: File) -> (str, str):
         </div>
         <div id="images">
         </div
-      <script src="/static/js/jquery.js"></script>
+      <script src="/static/js/jquery.min.js"></script>
     """
         + """
           <script src="https://cdnjs.cloudflare.com/ajax/libs/viewerjs/1.11.3/viewer.min.js">
diff --git a/akarpov/files/previews/text/__init__.py b/akarpov/files/previews/text/__init__.py
new file mode 100644
index 0000000..a9a0aaf
--- /dev/null
+++ b/akarpov/files/previews/text/__init__.py
@@ -0,0 +1 @@
+from . import common, plain  # noqa
diff --git a/akarpov/files/previews/text/common.py b/akarpov/files/previews/text/common.py
new file mode 100644
index 0000000..00db072
--- /dev/null
+++ b/akarpov/files/previews/text/common.py
@@ -0,0 +1,64 @@
+import html
+
+from akarpov.files.models import File
+
+language_previews = {
+    "jsx": "javascript",
+    "js": "javascript",
+    "tsx": "typescript",
+    "ts": "typescript",
+    "css": "css",
+    "py": "python",
+    "go": "go",
+    "java": "java",
+    "php": "php",
+    "cs": "csharp",
+    "swift": "swift",
+    "r": "r",
+    "rb": "ruby",
+    "c": "c",
+    "cpp": "cpp",
+    "mlx": "matlab",
+    "scala": "scala",
+    "sc": "scala",
+    "sql": "sql",
+    "html": "html",
+    "rs": "rust",
+    "pl": "perl",
+    "PL": "perl",
+}
+
+
+def view(file: File) -> (str, str):
+    extension = file.file.path.split(".")[-1]
+    if extension in language_previews:
+        extension = language_previews[extension]
+    static = f"""
+    <meta property="og:title" content="{file.name}" />
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/styles/atom-one-light.min.css">
+    """
+    content = "<pre>"
+    with file.file.open("r") as f:
+        lines = f.readlines()
+    for line in lines:
+        content += (
+            f"""<div class='code language-{extension}'>{html.escape(line)}</div>"""
+        )
+    content += (
+        """</pre>
+      <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/highlight.min.js"></script>
+      """
+        + f"""
+      <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/languages/{extension}.min.js"></script>
+      """
+        + """
+      <script>
+      hljs.configure({ ignoreUnescapedHTML: true })
+      document.querySelectorAll('div.code').forEach(el => {
+          hljs.highlightElement(el);
+        });
+      </script>
+    """
+    )
+
+    return static, content
diff --git a/akarpov/files/previews/text/plain.py b/akarpov/files/previews/text/plain.py
new file mode 100644
index 0000000..b53a08b
--- /dev/null
+++ b/akarpov/files/previews/text/plain.py
@@ -0,0 +1,23 @@
+import html
+
+from akarpov.files.models import File
+from akarpov.files.previews import text
+from akarpov.files.previews.text.common import language_previews
+
+
+def view(file: File) -> (str, str):
+    extension = file.file.path.split(".")[-1]
+    if hasattr(text, extension):
+        return getattr(text, extension).view(file)
+    elif extension in language_previews:
+        return text.common.view(file)
+    static = f"""
+    <meta property="og:title" content="{file.name}" />
+    """
+    content = "<pre>"
+    with file.file.open("r") as f:
+        lines = f.readlines()
+    for line in lines:
+        content += f"""<div class='code language-plaintext'>{html.escape(line)}</div>"""
+    content += "</pre>"
+    return static, content
diff --git a/akarpov/files/previews/video/basic.py b/akarpov/files/previews/video/basic.py
index 18ebe6c..40d2ae9 100644
--- a/akarpov/files/previews/video/basic.py
+++ b/akarpov/files/previews/video/basic.py
@@ -5,7 +5,7 @@ def view(file: File) -> (str, str):
     static = f"""
     <meta property="og:title" content="{file.name}" />
     <meta property="og:type" content="video.movie" />
-    <meta property="og:video" content="dev2.akarpov.ru/{file.file.url}" />
+    <meta property="og:video" content="{file.file.url}" />
     <meta property="og:video:type" content="{file.file_type}" />
     <meta property="og:video:width" content="720" />
     <meta property="og:video:height" content="480" />
diff --git a/akarpov/files/views.py b/akarpov/files/views.py
index 574db17..0e397d7 100644
--- a/akarpov/files/views.py
+++ b/akarpov/files/views.py
@@ -43,15 +43,15 @@ def get_context_data(self, **kwargs):
         static = ""
         content = ""
         if self.object.file_type:
-            if self.object.file_type == "application/octet-stream":
-                extension = self.object.file.path.split(".")[-1]
-                if extension in extensions:
-                    static, content = extensions[extension](self.object)
-            else:
-                t1, t2 = self.object.file_type.split("/")
-                if t1 in previews:
-                    if t2 in previews[t1]:
-                        static, content = previews[t1][t2](self.object)
+            t1, t2 = self.object.file_type.split("/")
+            extension = self.object.file.path.split(".")[-1]
+            loaded = False
+            if t1 in previews:
+                if t2 in previews[t1]:
+                    static, content = previews[t1][t2](self.object)
+                    loaded = True
+            if not loaded and extension in extensions:
+                static, content = extensions[extension](self.object)
         context["preview_static"] = static
         context["preview_content"] = content
         return context
diff --git a/akarpov/static/css/tomorrow-night-eighties.css b/akarpov/static/css/tomorrow-night-eighties.css
new file mode 100644
index 0000000..2f16e66
--- /dev/null
+++ b/akarpov/static/css/tomorrow-night-eighties.css
@@ -0,0 +1,44 @@
+/* Tomorrow Night Eighties Theme */
+/* Original theme - https://github.com/chriskempson/tomorrow-theme */
+/* https://jmblog.github.io/color-themes-for-google-code-highlightjs */
+.tomorrow-comment, pre .comment, pre .title {
+  color: #999999;
+}
+
+.tomorrow-red, pre .variable, pre .attribute, pre .tag, pre .regexp, pre .ruby .constant, pre .xml .tag .title, pre .xml .pi, pre .xml .doctype, pre .html .doctype, pre .css .id, pre .css .class, pre .css .pseudo {
+  color: #f2777a;
+}
+
+.tomorrow-orange, pre .number, pre .preprocessor, pre .built_in, pre .literal, pre .params, pre .constant {
+  color: #f99157;
+}
+
+.tomorrow-yellow, pre .class, pre .ruby .class .title, pre .css .rules .attribute {
+  color: #ffcc66;
+}
+
+.tomorrow-green, pre .string, pre .value, pre .inheritance, pre .header, pre .ruby .symbol, pre .xml .cdata {
+  color: #99cc99;
+}
+
+.tomorrow-aqua, pre .css .hexcolor {
+  color: #66cccc;
+}
+
+.tomorrow-blue, pre .function, pre .python .decorator, pre .python .title, pre .ruby .function .title, pre .ruby .title .keyword, pre .perl .sub, pre .javascript .title, pre .coffeescript .title {
+  color: #6699cc;
+}
+
+.tomorrow-purple, pre .keyword, pre .javascript .function {
+  color: #cc99cc;
+}
+
+pre code {
+  display: block;
+  background: #2d2d2d;
+  color: #cccccc;
+  font-family: Menlo, Monaco, Consolas, monospace;
+  line-height: 1.5;
+  border: 1px solid #ccc;
+  padding: 10px;
+}
diff --git a/akarpov/static/js/jquery.min.js b/akarpov/static/js/jquery.min.js
new file mode 100644
index 0000000..0de648e
--- /dev/null
+++ b/akarpov/static/js/jquery.min.js
@@ -0,0 +1,2 @@
+/*! jQuery v3.6.4 | (c) OpenJS Foundation and other contributors | jquery.org/license */
+!function(e,t){"use strict";"object"==typeof module&&"object"==typeof module.exports?module.exports=e.document?t(e,!0):function(e){if(!e.document)throw new Error("jQuery requires a window with a document");return t(e)}:t(e)}("undefined"!=typeof window?window:this,function(C,e){"use strict";var t=[],r=Object.getPrototypeOf,s=t.slice,g=t.flat?function(e){return t.flat.call(e)}:function(e){return t.concat.apply([],e)},u=t.push,i=t.indexOf,n={},o=n.toString,y=n.hasOwnProperty,a=y.toString,l=a.call(Object),v={},m=function(e){return"function"==typeof e&&"number"!=typeof e.nodeType&&"function"!=typeof e.item},x=function(e){return null!=e&&e===e.window},E=C.document,c={type:!0,src:!0,nonce:!0,noModule:!0};function b(e,t,n){var r,i,o=(n=n||E).createElement("script");if(o.text=e,t)for(r in c)(i=t[r]||t.getAttribute&&t.getAttribute(r))&&o.setAttribute(r,i);n.head.appendChild(o).parentNode.removeChild(o)}function w(e){return null==e?e+"":"object"==typeof e||"function"==typeof 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diff --git a/akarpov/templates/files/list.html b/akarpov/templates/files/list.html
index e7b0683..3c3a827 100644
--- a/akarpov/templates/files/list.html
+++ b/akarpov/templates/files/list.html
@@ -2,7 +2,7 @@
 {% load humanize static %}
 
 {% block javascript %}
-  <script src="{% static 'js/jquery.js' %}"></script>
+  <script src="{% static 'js/jquery.min.js' %}"></script>
   <script src="{% static 'js/jquery.ui.widget.js' %}"></script>
   <!-- The Iframe Transport is required for browsers without support for XHR file uploads -->
   <script src="{% static 'js/jquery.iframe-transport.js' %}"></script>
@@ -36,7 +36,7 @@
 {% for folder in folders %}
   {{ folder.name }}
 {% endfor %}
-<div class="row">
+<div class="row justify-content-center">
 <div class="col-lg-2 col-xxl-2 col-md-4 col-sm-6 col-xs-12 mb-3 m-3 d-flex align-items-stretch card">
     <div class="card-body d-flex flex-column justify-content-center align-items-center">
       {% csrf_token %}
diff --git a/akarpov/templates/files/upload.html b/akarpov/templates/files/upload.html
index ae7daa2..8c5bed0 100644
--- a/akarpov/templates/files/upload.html
+++ b/akarpov/templates/files/upload.html
@@ -2,7 +2,7 @@
 {% load static %}
 
 {% block javascript %}
-  <script src="{% static 'js/jquery.js' %}"></script>
+  <script src="{% static 'js/jquery.min.js' %}"></script>
   <script src="{% static 'js/jquery.ui.widget.js' %}"></script>
   <!-- The Iframe Transport is required for browsers without support for XHR file uploads -->
   <script src="{% static 'js/jquery.iframe-transport.js' %}"></script>