From efb902f3f293db4aac6e57b9f3a84143d84a90e9 Mon Sep 17 00:00:00 2001
From: Gareth Coles <gdude2002@gmail.com>
Date: Sun, 6 May 2018 18:21:34 +0100
Subject: [Wiki] Misc improvements, plus a beta search feature

---
 pysite/views/wiki/search.py | 66 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 pysite/views/wiki/search.py

(limited to 'pysite/views/wiki/search.py')

diff --git a/pysite/views/wiki/search.py b/pysite/views/wiki/search.py
new file mode 100644
index 00000000..1c920e15
--- /dev/null
+++ b/pysite/views/wiki/search.py
@@ -0,0 +1,66 @@
+import html
+import re
+
+from flask import redirect, request, url_for
+from werkzeug.exceptions import BadRequest
+
+from pysite.base_route import RouteView
+from pysite.decorators import csrf
+from pysite.mixins import DBMixin
+
+STRIP_REGEX = re.compile(r"<[^<]+?>")
+
+
+class SearchView(RouteView, DBMixin):
+    path = "/search"  # "path" means that it accepts slashes
+    name = "search"
+    table_name = "wiki"
+    revision_table_name = "wiki_revisions"
+
+    def get(self):
+        return self.render("wiki/search.html")
+
+    @csrf
+    def post(self):
+        given_query = request.form.get("query")
+
+        if not given_query or not given_query.strip():
+            raise BadRequest()
+
+        query = f"({re.escape(given_query)})"
+
+        pages = self.db.filter(
+            self.table_name,
+            lambda doc: doc["text"].match(query)
+        )
+
+        if len(pages) == 1:
+            slug = pages[0]["slug"]
+            return redirect(url_for("wiki.page", page=slug), code=303)
+
+        for obj in pages:
+            text = obj["text"]
+
+            matches = re.finditer(query, text)
+            snippets = []
+
+            for match in matches:
+                start = match.start() - 50
+
+                if start < 0:
+                    start = 0
+
+                end = match.end() + 50
+
+                if end > len(text):
+                    end = len(text)
+
+                match_text = text[start:end]
+                match_text = re.sub(query, r"<strong>\1</strong>", html.escape(match_text))
+
+                snippets.append(match_text.replace("\n", "<br />"))
+
+            obj["matches"] = snippets
+
+        pages = sorted(pages, key=lambda d: d["title"])
+        return self.render("wiki/search_results.html", pages=pages, query=given_query)
-- 
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