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feat: HTML page rendering

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Lewis Wynne 2026-04-09 11:47:22 +01:00
parent 7346141de5
commit 119db17142
2 changed files with 120 additions and 0 deletions
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1
src/main.rs
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@ -1,5 +1,6 @@
mod config; mod config;
mod entries; mod entries;
mod render;
fn main() { fn main() {
let config = config::Config::load("config.toml").expect("failed to load config.toml"); let config = config::Config::load("config.toml").expect("failed to load config.toml");

119
src/render.rs Normal file
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use crate::entries::Entry;
pub fn render_page(site_title: &str, site_url: &str, entries: &[Entry], form_html: &str) -> String {
let nav_url = site_url.trim_end_matches('/');
let mut html = format!(
r#"<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>guestbook - {site_title}</title>
<link rel="stylesheet" href="/style.css">
</head>
<body>
<nav>
<a href="{nav_url}/">{site_title}</a> |
<a href="{nav_url}/links/">links</a> |
<a href="{nav_url}/now/">now</a> |
sign the <a href="/">guestbook</a>
</nav>
<h1>guestbook</h1>
<p>If you visited my site, please sign my guestbook!</p>
{form_html}
"#
);
for entry in entries {
html.push_str(&render_entry(entry));
}
html.push_str("</body>\n</html>\n");
html
}
fn render_entry(entry: &Entry) -> String {
let mut header = format!(" <div class=\"entry\">\n <p>{} - <b>{}</b>", entry.meta.date, entry.meta.name);
if !entry.meta.website.is_empty() {
header.push_str(&format!(
" (<a href=\"{}\">{}</a>)",
entry.meta.website, entry.meta.website
));
}
header.push_str("</p>\n");
format!("{header} {}\n </div>\n", entry.body)
}
pub const FORM_HTML: &str = r#" <form method="post" action="/submit">
<input name="name" placeholder="name" required>
<input name="website" placeholder="website (optional)">
<textarea name="message" placeholder="message" required></textarea>
<input name="url" style="display:none" tabindex="-1" autocomplete="off">
<button type="submit">sign</button>
</form>"#;
pub const STYLE_CSS: &str = "body {
max-width: 70ch;
line-height: 1.5;
margin: 0 auto;
padding: 1rem;
}
";
#[cfg(test)]
mod tests {
use super::*;
use crate::entries::{Entry, EntryMeta, Status};
fn make_entry(name: &str, date: &str, body: &str) -> Entry {
Entry {
id: "test".into(),
meta: EntryMeta {
name: name.into(),
date: date.into(),
website: String::new(),
status: Status::Approved,
},
body: body.into(),
}
}
#[test]
fn test_render_page_contains_nav() {
let html = render_page("ily.rs", "https://ily.rs", &[], FORM_HTML);
assert!(html.contains(r#"<a href="https://ily.rs/">ily.rs</a>"#));
assert!(html.contains(r#"<a href="https://ily.rs/links/">links</a>"#));
}
#[test]
fn test_render_page_contains_form() {
let html = render_page("ily.rs", "https://ily.rs", &[], FORM_HTML);
assert!(html.contains(r#"action="/submit""#));
assert!(html.contains(r#"style="display:none""#)); // honeypot
}
#[test]
fn test_render_entry_no_website() {
let entry = make_entry("alice", "2026-04-09", "Hello!");
let html = render_page("ily.rs", "https://ily.rs", &[entry], FORM_HTML);
assert!(html.contains("<b>alice</b>"));
assert!(html.contains("Hello!"));
assert!(!html.contains("<hr"));
}
#[test]
fn test_render_entry_with_website() {
let mut entry = make_entry("bob", "2026-04-09", "Hi!");
entry.meta.website = "https://bob.com".into();
let html = render_page("ily.rs", "https://ily.rs", &[entry], FORM_HTML);
assert!(html.contains(r#"<a href="https://bob.com">"#));
}
#[test]
fn test_render_preserves_html_in_body() {
let entry = make_entry("carol", "2026-04-09", "<b>Bold</b> <script>alert(1)</script>");
let html = render_page("ily.rs", "https://ily.rs", &[entry], FORM_HTML);
assert!(html.contains("<b>Bold</b>"));
assert!(html.contains("<script>alert(1)</script>"));
}
}