Make replies and sharing work

demo/soudan.js

@@ -1,12 +1,19 @@
+function commentForm(parent) {
+	return `
+	<form id="soudan-comment-form" onsubmit="submitForm(this, event)">
+		<label for="author">Name:</label> <input type="text" name="author" placeholder="Anonymous">
+		<label for="email">Email:</label> <input type="email" name="email">
+		<label for="text">Comment:</label>
+		<textarea name="text" required></textarea>
+		<input type="hidden" name="parent"${parent ? ` value=${parent}` : ""}>
+		<input type="submit">
+	</form>`;
+}
+function commentDisplay(comment, replies) {
+	return `<div id="${comment.id}" class="soudan-comment"><img class="soudan-avatar" src="https://www.gravatar.com/avatar/${comment.gravatar}"><div>${typeof replies === "string" ? `<button title="Reply" style="float: right; margin-left: 0.5em" onclick="this.disabled = true; reply(${comment.id})"><svg xmlns="http://www.w3.org/2000/svg" style="width: 20px" viewBox="0 0 20 20" fill="currentColor"><path fill-rule="evenodd" d="M7.707 3.293a1 1 0 010 1.414L5.414 7H11a7 7 0 017 7v2a1 1 0 11-2 0v-2a5 5 0 00-5-5H5.414l2.293 2.293a1 1 0 11-1.414 1.414l-4-4a1 1 0 010-1.414l4-4a1 1 0 011.414 0z" clip-rule="evenodd" /></svg></button>` : ""}<button title="Share" style="float: right" onclick="navigator.clipboard.writeText('${document.location.origin}${document.location.pathname}#${comment.id}'); alert('Copied comment share link to clipboard!')"><svg xmlns="http://www.w3.org/2000/svg" style="diplay: inline; width: 20px" viewBox="0 0 20 20" fill="currentColor"><path d="M15 8a3 3 0 10-2.977-2.63l-4.94 2.47a3 3 0 100 4.319l4.94 2.47a3 3 0 10.895-1.789l-4.94-2.47a3.027 3.027 0 000-.74l4.94-2.47C13.456 7.68 14.19 8 15 8z" /></svg></button><b>${comment.author ? comment.author : "Anonymous"}</b> commented ${moment(new Date(comment.timestamp * 1000)).fromNow()}:<br><div>${md.render(comment.text)}</div>${typeof replies === "string" ? `<div class="soudan-replies">${replies ? replies : ""}</div>` : ""}</div></div>`;
+}
 document.getElementById("soudan").innerHTML = `<h3>Make a comment</h3>
-<form id="soudan-comment-form">
+${commentForm()}
-	<label for="author">Name:</label> <input type="text" name="author" placeholder="Anonymous">
-	<label for="email">Email:</label> <input type="email" name="email">
-	<label for="text">Comment:</label>
-	<textarea name="text" required></textarea>
-	<input type="hidden" name="parent">
-	<input type="submit">
-</form>
 <h3 id="soudan-comments-header">Comments</h3>
 <div id="soudan-comments"></div>`;
 const md = window.markdownit().disable("image");
@@ -15,7 +22,8 @@ const form = document.getElementById("soudan-comment-form");
 const commentContainer = document.getElementById("soudan-comments");
 const commentContainerHeader = document.getElementById("soudan-comments-header");
 const contentId = document.querySelector("meta[name=\"soudan-content-id\"]").getAttribute("content");
-form.addEventListener("submit", e => {
+
+function submitForm(form, e) {
 	let data = {
 		url: window.location.href,
 		comment: { contentId }
@@ -23,6 +31,9 @@ form.addEventListener("submit", e => {
 	new FormData(form).forEach((value, key) => {
 		data.comment[key] = value === "" ? null : value;
 	});
+	if (data.comment.parent) {
+		data.comment.parent = parseInt(data.comment.parent);
+	}
 	fetch(url, {
 		method: "POST",
 		body: JSON.stringify(data),
@@ -36,9 +47,9 @@ form.addEventListener("submit", e => {
 			reloadComments();
 		})
 	e.preventDefault();
-});
+}
 
-function reloadComments() {
+function reloadComments(jump) {
 	fetch(`${url}/${contentId}`)
 		.then(response => {
 			return response.json().then(json => {
@@ -52,11 +63,31 @@ function reloadComments() {
 				html = "<p>No comments yet! Be the first to make one.</p>";
 			} else {
 				comments.forEach(comment => {
-					html += `<div><img class="soudan-avatar" src="https://www.gravatar.com/avatar/${comment.gravatar}"><div><b>${comment.author ? comment.author : "Anonymous"}</b> commented ${moment(new Date(comment.timestamp * 1000)).fromNow()}:<br><div>${md.render(comment.text)}</div></div></div>`;
+					if (comment.replies) {
+						let replies = "";
+						comment.replies.forEach(reply => {
+							replies += commentDisplay(reply);
+						});
+						html += commentDisplay(comment, replies);
+					} else {
+						html += commentDisplay(comment, "");
+					}
 				});
 			}
 			commentContainer.innerHTML = html;
+			if (jump && window.location.hash) {
+				const target = document.getElementById(window.location.hash.substring(1));
+				if (target) {
+					window.scrollTo(0, target.offsetTop);
+					target.classList.add("soudan-highlighted");
+				}
+			}
 		});
 }
 
-reloadComments();
+function reply(id) {
+	const replies = document.getElementById(id).querySelector(".soudan-replies");
+	replies.innerHTML = `<h3>Reply</h3>${commentForm(id)}${replies.innerHTML}`;
+}
+
+reloadComments(true);

demo/style.css

@@ -1,10 +1,25 @@
-#soudan-comments > div {
+.soudan-comment {
 	display: flex;
 	gap: 0.5em;
 }
+.soudan-comment > div {
+	width: 100%;
+}
+@keyframes soudan-highlighted {
+	from { background: rgba(255, 255, 0, 0.25); }
+	to { background: rgba(255, 255, 0, 0); }
+}
+.soudan-highlighted {
+	background: rgba(255, 255, 0, 0.25);
+	border-radius: 0.25em;
+	animation-name: soudan-highlighted;
+	animation-duration: 4s;
+	animation-delay: 2s;
+	animation-fill-mode: forwards;
+}
 .soudan-avatar {
 	border-radius: 100%;
-	width: 80px;
+	width: 60px;
-	height: 80px;
+	height: 60px;
 	background-color: gray;
 }

src/database.rs

@@ -32,7 +32,7 @@ impl Database {
             .query_map([], |row| {
                 let id = row.get::<usize, Option<i64>>(0)?.unwrap();
                 let replies = self.conn
-                    .prepare(&format!("SELECT id, author, email, text, timestamp FROM comment WHERE parent={id} ORDER BY timestamp DESC"))?
+                    .prepare(&format!("SELECT id, author, email, text, timestamp FROM comment WHERE parent={id}"))?
                     .query_map([], |row| {
                         Ok(Comment {
                             id: row.get(0)?,
@@ -62,12 +62,13 @@ impl Database {
 
     pub fn create_comment(&self, comment: &Comment) -> Result<()> {
         self.conn.execute(
-            "INSERT INTO comment (author, email, text, content_id) VALUES (?1, ?2, ?3, ?4)",
+            "INSERT INTO comment (author, email, text, content_id, parent) VALUES (?1, ?2, ?3, ?4, ?5)",
             params![
                 &comment.author,
                 &comment.email,
                 &comment.text,
-                &comment.content_id
+                &comment.content_id,
+                &comment.parent,
             ],
         )?;
         Ok(())

src/main.rs

@@ -123,7 +123,25 @@ async fn post_comment(
                 Ok(database) => database,
                 Err(response) => return response,
             };
-            database.create_comment(&comment).unwrap();
+            if let Some(parent) = comment.parent {
+                'outer2: loop {
+                    match database.get_comments(&comment.content_id) {
+                        Ok(comments) => for other_comment in comments.iter() {
+                            if other_comment.id.unwrap() == parent {
+                                if other_comment.parent.is_none() {
+                                    break 'outer2;
+                                }
+                                break;
+                            }
+                        },
+                        Err(_) => return HttpResponse::InternalServerError().reason("failed to get comments").finish(),
+                    }
+                    return HttpResponse::BadRequest().reason("invalid comment parent").finish();
+                }
+            }
+            if let Err(_) = database.create_comment(&comment) {
+                return HttpResponse::InternalServerError().reason("failed to create comment").finish();
+            }
             HttpResponse::Ok().into()
         }
         Err(_) => HttpResponse::BadRequest().reason("failed to parse request body").finish(),