feat(pkgs/back): Rewrite the `git-bug` interface code

The previous code was more or less reverse engineered, whilst this code
is based on the actually git-bug source code. This improves the whole
issue and operation handling immensely and also makes the code better
maintainable. Furthermore, it also adds support for the operations that
had not already used in `vhack.eu/nixos-server.git`.

1 files changed, 166 insertions, 0 deletions

diff --git a/pkgs/by-name/ba/back/src/web/issue_html.rs b/pkgs/by-name/ba/back/src/web/issue_html.rs
new file mode 100644
index 0000000..45c0281
--- /dev/null
+++ b/pkgs/by-name/ba/back/src/web/issue_html.rs
@@ -0,0 +1,166 @@
+// Back - An extremely simple git issue tracking system. Inspired by tvix's
+// panettone
+//
+// Copyright (C) 2024 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This file is part of Back.
+//
+// You should have received a copy of the License along with this program.
+// If not, see <https://www.gnu.org/licenses/agpl.txt>.
+
+use rocket::response::content::RawHtml;
+
+use crate::{
+    config::BackConfig,
+    git_bug::{
+        format::HtmlString,
+        issue::{identity::Author, CollapsedIssue, Comment},
+    },
+};
+
+impl CollapsedIssue {
+    pub fn to_list_entry(&self) -> RawHtml<String> {
+        let comment_list = if self.comments.is_empty() {
+            String::new()
+        } else {
+            let comments_string = if self.comments.len() > 1 {
+                "comments"
+            } else {
+                "comment"
+            };
+
+            format!(
+                r#"
+                <span class="comment-count"> - {} {}</span>
+            "#,
+                self.comments.len(),
+                comments_string
+            )
+        };
+
+        let CollapsedIssue {
+            id,
+            title,
+            message: _,
+            author,
+            timestamp,
+            comments: _,
+            status: _,
+            last_status_change: _,
+            labels: _,
+        } = self;
+
+        let Author { name, email, id: _ } = author;
+
+        RawHtml(format!(
+            r#"
+               <li>
+                  <a href="/issue/{id}">
+                     <p>
+                        <span class="issue-subject">{title}</span>
+                     </p>
+                     <span class="issue-number">{id}</span> - <span class="created-by-at">Opened by <span class="user-name">{name}</span> <span class="user-email">&lt;{email}&gt;</span> at <span class="timestamp">{timestamp}</span></span>{comment_list}                  </a>
+               </li>
+"#,
+        ))
+    }
+
+    pub fn to_html(&self, config: &BackConfig) -> RawHtml<String> {
+        let comments = if self.comments.is_empty() {
+            String::new()
+        } else {
+            let fmt_comments: String = self
+                .comments
+                .iter()
+                .map(|val| {
+                    let Comment {
+                        id,
+                        author,
+                        message,
+                        timestamp,
+                    } = val;
+                    let Author {
+                        name,
+                        email: _,
+                        id: _,
+                    } = author;
+
+                    format!(
+                        r#"
+               <li class="comment" id="{id}">
+                  {message}
+                  <p class="comment-info"><span class="user-name">{name} at {timestamp}</span></p>
+               </li>
+                "#,
+                    )
+                })
+                .collect::<Vec<String>>()
+                .join("\n");
+
+            format!(
+                r#"
+            <ol class="issue-history">
+            {fmt_comments}
+            </ol>
+            "#
+            )
+        };
+
+        {
+            let CollapsedIssue {
+                id,
+                title,
+                message,
+                author,
+                timestamp,
+                comments: _,
+                status: _,
+                last_status_change: _,
+                labels: _,
+            } = self;
+            let Author { name, email, id: _ } = author;
+            let html_title = HtmlString::from(title.clone());
+
+            RawHtml(format!(
+                r#"
+<!DOCTYPE html>
+<html lang="en">
+   <head>
+      <title>{html_title} | Back</title>
+      <link href="/style.css" rel="stylesheet" type="text/css">
+      <meta content="width=device-width,initial-scale=1" name="viewport">
+   </head>
+   <body>
+      <div class="content">
+         <nav>
+         <a href="/issues/open">Open Issues</a>
+         <a href="/issues/closed">Closed Issues</a>
+         </nav>
+         <header>
+            <h1>{title}</h1>
+            <div class="issue-number">{id}</div>
+         </header>
+         <main>
+            <div class="issue-info">
+                <span class="created-by-at">Opened by <span class="user-name">{name}</span> <span class="user-email">&lt;{email}&gt;</span> at <span class="timestamp">{timestamp}</span></span>
+            </div>
+            {message}
+            {comments}
+         </main>
+         <footer>
+            <nav>
+            <a href="/issues/open">Open Issues</a>
+            <a href="{}">Source code</a>
+            <a href="/issues/closed">Closed Issues</a>
+            </nav>
+         </footer>
+      </div>
+   </body>
+</html>
+"#,
+                config.source_code_repository_url
+            ))
+        }
+    }
+}