From a4dc2e496f6ed68d904931565cb7a87575368c44 Mon Sep 17 00:00:00 2001
From: Tim Van Baak <tim.vanbaak@gmail.com>
Date: Fri, 10 Apr 2020 15:06:56 -0700
Subject: [PATCH] Add rudimentary preview link coloring

---
 amanuensis/parser/render.py  | 22 +++++++++++++++++++---
 amanuensis/server/lexicon.py |  3 ++-
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/amanuensis/parser/render.py b/amanuensis/parser/render.py
index c6c00a4..5eb0338 100644
--- a/amanuensis/parser/render.py
+++ b/amanuensis/parser/render.py
@@ -5,6 +5,13 @@ readable formats.
 
 
 class PreviewHtmlRenderer():
+	def __init__(self, article_map):
+		"""
+		article_map maps article titles to character ids. An article
+		present in the map but mapped to None is a phantom article.
+		"""
+		self.article_map = article_map
+
 	def TextSpan(self, span):
 		return span.innertext
 
@@ -18,9 +25,11 @@ class PreviewHtmlRenderer():
 		return f'<p>{"".join(span.recurse(self))}</p>'
 
 	def SignatureParagraph(self, span):
-		return ('<hr><span class="signature"><p>'
+		return (
+			'<hr><span class="signature"><p>'
 			f'{"".join(span.recurse(self))}'
-			'</p></span>')
+			'</p></span>'
+		)
 
 	def BoldSpan(self, span):
 		return f'<b>{"".join(span.recurse(self))}</b>'
@@ -29,4 +38,11 @@ class PreviewHtmlRenderer():
 		return f'<i>{"".join(span.recurse(self))}</i>'
 
 	def CitationSpan(self, span):
-		return f'<a href="#">{"".join(span.recurse(self))}</a>'
+		if span.cite_target in self.article_map:
+			if self.article_map.get(span.cite_target):
+				link_class = ' style="color:#0000ff"'
+			else:
+				link_class = ' style="color:#ff0000"'
+		else:
+			link_class = ' style="color:#008000"'
+		return f'<a href="#"{link_class}>{"".join(span.recurse(self))}</a>'
diff --git a/amanuensis/server/lexicon.py b/amanuensis/server/lexicon.py
index ec5710d..0499174 100644
--- a/amanuensis/server/lexicon.py
+++ b/amanuensis/server/lexicon.py
@@ -240,7 +240,8 @@ def get_bp():
 		article = request.json['article']
 		# TODO verification
 		parsed_draft = parse_raw_markdown(article['contents'])
-		rendered_html = parsed_draft.render(PreviewHtmlRenderer())
+		rendered_html = parsed_draft.render(PreviewHtmlRenderer(
+			{'Article':'default','Phantom':None}))
 		features = parsed_draft.render(FeatureCounter())
 
 		filename = f'{article["character"]}.{article["aid"]}'