Implement draft previews and constraint analysis

amanuensis/backend/article.py

@@ -54,7 +54,9 @@ def try_from_public_id(db: DbContext, public_id: UUID) -> Optional[Article]:
     ).scalar_one_or_none()
 
 
-def update_state(db: DbContext, article_id: int, title: str, body: str, state: ArticleState):
+def update_state(
+    db: DbContext, article_id: int, title: str, body: str, state: ArticleState
+):
     """Update an article."""
     db(
         update(Article)

amanuensis/lexicon/constraint.py

@@ -1,6 +1,7 @@
 import re
 from typing import Sequence
 
+from amanuensis.db import *
 from amanuensis.parser import *
 
 
@@ -9,18 +10,14 @@ class ConstraintCheck(RenderableVisitor):
     def __init__(self) -> None:
         self.word_count: int = 0
         self.signatures: int = 0
-        self.tmp: bool = False
 
     def TextSpan(self, span):
         self.word_count += len(re.split(r'\s+', span.innertext.strip()))
         return self
 
-    def BoldSpan(self, span):
-        self.tmp = True
-        return self
-
     def SignatureParagraph(self, span):
         self.signatures += 1
+        span.recurse(self)
         return self
 
 
@@ -53,21 +50,102 @@ class ConstraintMessage:
         return {"severity": self.severity, "message": self.message}
 
 
-def constraint_check(parsed: Renderable) -> Sequence[ConstraintMessage]:
+def title_constraint_check(title: str) -> Sequence[ConstraintMessage]:
+    """Perform checks that apply to the article title."""
+    messages = []
+
+    # I: Current index assignments
+    # TODO
+
+    # E: No title
+    if not title:
+        messages.append(ConstraintMessage.error("Missing title"))
+
+    # I: This article is new
+    # TODO
+    # E: And new articles are forbidden
+    # TODO
+
+    # I: This article is a phantom
+    # TODO
+
+    # I: This article is an addendum
+    # TODO
+    # E: And the user is at the addendum limit
+    # TODO
+
+    # E: This article has already been written and addendums are disabled
+    # TODO
+
+    # I: This article's index
+    # TODO
+
+    # E: The article does not fulfill the player's index assignment
+    # TODO
+
+    # E: The index does not have room for a new article
+    # TODO
+
+    # E: The player has cited this phantom article before
+    # TODO
+
+    # W: Another player is writing an article with this title
+    # TODO
+
+    # E: Another player has an approved article with this title
+    # TODO
+
+    # W: The article's title matches a character's name
+    # TODO
+
+    return messages
+
+
+def content_constraint_check(parsed: Renderable) -> Sequence[ConstraintMessage]:
     check_result: ConstraintCheck = parsed.render(ConstraintCheck())
+
     messages = []
 
     # I: Word count
     messages.append(ConstraintMessage.info(f"Word count: {check_result.word_count}"))
 
-    # W: Check signature count
+    # E: Self-citation when forbidden
+    # TODO
+
+    # W: A new citation matches a character's name
+    # TODO
+
+    # W: The article cites itself
+    # TODO
+
+    # E: A new citation would create more articles than can be written
+    # TODO
+
+    # E: Extant citation count requirements
+    # TODO
+
+    # E: Phantom citation count requirements
+    # TODO
+
+    # E: New citation count requirements
+    # TODO
+
+    # E: Character citation count requirements
+    # TODO
+
+    # E: Total citation count requirements
+    # TODO
+
+    # E: Exceeded hard word limit
+    # TODO
+
+    # W: Exceeded soft word limit
+    # TODO
+
+    # W: Missing or multiple signatures
     if check_result.signatures < 1:
         messages.append(ConstraintMessage.warning("Missing signature paragraph"))
     if check_result.signatures > 1:
         messages.append(ConstraintMessage.warning("More than one signature paragraph"))
 
-    # E: tmp to test errors
-    if check_result.tmp:
-        messages.append(ConstraintMessage.error("Temporary error"))
-
     return messages

amanuensis/server/lexicon/editor/__init__.py

@@ -4,7 +4,7 @@ from flask import Blueprint, render_template, g, abort, request
 
 from amanuensis.backend import *
 from amanuensis.db import *
-from amanuensis.lexicon.constraint import constraint_check
+from amanuensis.lexicon.constraint import title_constraint_check, content_constraint_check
 from amanuensis.parser import *
 from amanuensis.server.helpers import lexicon_param, player_required
 
@@ -14,6 +14,7 @@ bp = Blueprint("editor", __name__, url_prefix="/editor", template_folder=".")
 
 class PreviewHtmlRenderer(RenderableVisitor):
     """Parses stylistic markdown and stores citations as footnotes."""
+
     def __init__(self) -> None:
         self.citations: list = []
         self.rendered: str = ""
@@ -23,7 +24,7 @@ class PreviewHtmlRenderer(RenderableVisitor):
         return span.innertext
 
     def LineBreak(self, span):
-        return '<br>'
+        return "<br>"
 
     # Translate the simple container spans to text
     def BoldSpan(self, span):
@@ -35,10 +36,7 @@ class PreviewHtmlRenderer(RenderableVisitor):
     # Record citations in the visitor, then translate the span to text as an
     # underline and footnote number
     def CitationSpan(self, span):
-        self.citations.append({
-            "title": span.cite_target,
-            "type": "phantom"
-        })
+        self.citations.append({"title": span.cite_target, "type": "phantom"})
         return f'<u>{"".join(span.recurse(self))}</u>[{len(self.citations)}]'
 
     # Translate the paragraph-level containers to their text contents
@@ -49,13 +47,13 @@ class PreviewHtmlRenderer(RenderableVisitor):
         return (
             '<hr><span class="signature"><p>'
             f'{"".join(span.recurse(self))}'
-            '</p></span>'
+            "</p></span>"
         )
 
     # Return the visitor from the top-level article span after saving the full
     # text parsed from the child spans
     def ParsedArticle(self, span):
-        self.contents = '\n'.join(span.recurse(self))
+        self.contents = "\n".join(span.recurse(self))
         return self
 
 
@@ -94,17 +92,18 @@ def load(lexicon_name, article_id):
     preview_result: PreviewHtmlRenderer = parsed.render(PreviewHtmlRenderer())
 
     # Check article content against constraints
-    messages = constraint_check(parsed)
+    messages = title_constraint_check(article.title)
+    messages.extend(content_constraint_check(parsed))
 
     # Return the article information to the editor
     msg_list = list([msg.json() for msg in messages])
     return {
-        'title': article.title,
-        'rendered': preview_result.contents,
-        'state': article.state.value,
-        'ersatz': article.ersatz,
-        'citations': preview_result.citations,
-        'messages': msg_list,
+        "title": article.title,
+        "rendered": preview_result.contents,
+        "state": article.state.value,
+        "ersatz": article.ersatz,
+        "citations": preview_result.citations,
+        "messages": msg_list,
     }
 
 
@@ -116,33 +115,40 @@ def update(lexicon_name, article_id):
         return abort(404)
 
     # Extract the submitted content
-    new_title = request.json['title']
-    new_body = request.json['body']
-    new_state = ArticleState(request.json['state'])
+    new_title = request.json["title"]
+    new_body = request.json["body"]
+    new_state = ArticleState(request.json["state"])
 
     # Generate the preview HTML from the submitted content
     parsed = parse_raw_markdown(new_body)
     preview_result: PreviewHtmlRenderer = parsed.render(PreviewHtmlRenderer())
 
     # Check article content against constraints
-    messages = constraint_check(parsed)
+    messages = title_constraint_check(new_title)
+    messages.extend(content_constraint_check(parsed))
 
     # Block submission if the article is a draft with errors
     has_errors = any([msg for msg in messages if msg.is_error])
-    if article.state == ArticleState.DRAFT and new_state != ArticleState.DRAFT and has_errors:
+    if (
+        article.state == ArticleState.DRAFT
+        and new_state != ArticleState.DRAFT
+        and has_errors
+    ):
         new_state = ArticleState.DRAFT
 
     # Update the article with the submitted information
-    artiq.update_state(g.db, article.id, title=new_title, body=new_body, state=new_state)
+    artiq.update_state(
+        g.db, article.id, title=new_title, body=new_body, state=new_state
+    )
     updated_article = artiq.try_from_public_id(g.db, article_id)
 
     # Return the article information to the editor
     msg_list = list([msg.json() for msg in messages])
     return {
-        'title': updated_article.title,
-        'rendered': preview_result.contents,
-        'state': updated_article.state.value,
-        'ersatz': updated_article.ersatz,
-        'citations': preview_result.citations,
-        'messages': msg_list,
+        "title": updated_article.title,
+        "rendered": preview_result.contents,
+        "state": updated_article.state.value,
+        "ersatz": updated_article.ersatz,
+        "citations": preview_result.citations,
+        "messages": msg_list,
     }