Side A adds a real, working feature: a background Reddit-fetch worker with OAuth, rate-limit/backoff handling, JSON parsing, and unit tests, properly wired into state.rs and html/mod.rs. Side B is a disorganized dump of loose top-level files (ranking.rs, reducer.rs, vote.rs, forms.rs, etc.) placed outside server/src, some containing raw shell-prompt artifacts from a `cat` command, indicating it's an unintegrated snapshot rather than a coherent commit.
constitution · epochs · watch · epoch 3
comparison
c_c124c217f89c (tommy-mor) vs c_f6d0fed9bf9a (tommy-mor)
download prompt · raw event · cmp_26c8aadebaea75
council reasoning
Commit A delivers a complete, integrated Reddit fetch broker (OAuth, rate-limit backoff, dedup worker, JSON parsers, browse/state hooks, tests) that replaces a stub with production-ready code. Commit B is mostly unintegrated scrapes/notes (tdsl ideas, shell-prompt-contaminated dumps of parser/ranking/reducer/vote) plus minor scripts, adding far less durable project value despite higher line count.
Side A replaces a Reddit import placeholder with a complete background fetch system: queued async worker, OAuth support, rate-limit handling, JSON parsing into entity data, request deduplication/caching, integration into application state, and tests, plus triggering fetches from browse/create paths. Side B adds many planning documents and large code drops, but several files contain accidental terminal transcripts rather than clean source, and much of the content is speculative or scaffolding rather than a clearly integrated, production-ready feature.
sides
A — c_c124c217f89c (tommy-mor)
message
[8d8230d1] reddit
diff preview
diff --git a/.gitignore b/.gitignore
index 4c7073f9fac0c30fd2050d79a60ef447af58ebeb..ada462e900d24a3a6d08165d158c80f79c35a5a5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@
data/
repomix-output.xml
dev-data/
+.env
diff --git a/server/Cargo.toml b/server/Cargo.toml
index 7906a8547d56b8e6a48ef59c37aa82a8510fdee9..4677fedcb45292eebebe7e9cf6ce2f5738f18ddf 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -16,6 +16,7 @@ tower = "0.5"
tower-http = { version = "0.5", features = ["trace"] }
tracing = "0.1"
tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+reqwest = { version = "0.12", features = ["json"] }
[dev-dependencies]
reqwest = { version = "0.12", features = ["json"] }
diff --git a/server/src/html/mod.rs b/server/src/html/mod.rs
index 2864407ed6e8ec284a1dc663acf1805534566b62..df6505021d9f446c2b453e20e3eb3cf696a111f9 100644
--- a/server/src/html/mod.rs
+++ b/server/src/html/mod.rs
@@ -272,5 +272,16 @@ pub async fn home(State(state): State<AppState>, uri: Uri) -> impl IntoResponse
pub async fn browse(State(state): State<AppState>, uri: Uri) -> impl IntoResponse {
let item = ItemId::from_browse_uri(uri.path()).unwrap_or(ItemId::root());
+ if item.as_str().starts_with("reddit.com") {
+ let needs_fetch = {
+ let tree = state.tree.read().await;
+ tree.get(&item)
+ .map(|n| n.data.is_none())
+ .unwrap_or(true)
+ };
+ if needs_fetch {
+ state.reddit.request_fetch(item.clone());
+ }
+ }
item_page(state, uri, item).await
}
diff --git a/server/src/reddit.rs b/server/src/reddit.rs
index d203dca09245daf869b3aa942898447700ae69fb..90053ad03b1d7c8e94f325dd4ee64c2b4f7da900 100644
--- a/server/src/reddit.rs
+++ b/server/src/reddit.rs
@@ -1,4 +1,12 @@
-//! Reddit API import (async, decoupled from UI request path).
+//! Reddit API import via a single background worker (rate limits, dedup, backoff).
+
+use std::collections::{HashMap, HashSet};
+use std::sync::Arc;
+use std::time::{Duration, Instant};
+
+use reqwest::{header, Client, StatusCode};
+use serde::Deserialize;
+use tokio::sync::{mpsc, RwLock};
use crate::{
path_types::ItemId,
@@ -10,12 +18,401 @@ pub fn ensure_partial_tree(tree: &mut GlobalTree, id: &ItemId) {
tree.ensure_path(id);
}
-/// Placeholder for Reddit JSON import. Returns entity data when implemented.
-pub async fn fetch_reddit_entity(_id: &ItemId) -> Option<EntityData> {
- None
+pub struct RedditCommand {
+ pub id: ItemId,
+}
+
+#[derive(Clone)]
+pub struct RedditBroker {
+ tx: mpsc::Sender<RedditCommand>,
+}
+
+#[derive(Clone)]
+struct RedditCredentials {
+ client_id: String,
+ client_secret: String,
+}
+
+struct OAuthToken {
+ access_token: String,
+ expires_at: Instant,
+}
+
+impl RedditBroker {
+ pub fn spawn(tree: Arc<RwLock<GlobalTree>>, user_agent: &str) -> Self {
+ let (tx, rx) = mpsc::channel(100);
+
+ let mut headers = header::HeaderMap::new();
+ headers.insert(
+ header::USER_AGENT,
+ header::HeaderValue::from_str(user_agent).expect("valid user agent"),
+ );
+
+ let client = Client::builder()
+ .default_headers(headers)
+ .timeout(Duration::from_secs(15))
+ .build()
+ .expect("reqwest client");
+
+ let creds = RedditCredentials::from_env();
+ tokio::spawn(reddit_worker(rx, tree, client, creds));
+
+ Self { tx }
+ }
+
+ /// Fire-and-forget: queue a fetch; worker updates the tree when done.
+ pub fn request_fetch(&self, id: ItemId) {
+ let _ = self.tx.try_send(RedditCommand { id });
+ }
+}
+
+impl RedditCredentials {
+ fn from_env() -> Option<Self> {
+ let client_id = std::env::var("REDDIT_CLIENT_ID").ok()?;
+ let client_secret = std::env::var("REDDIT_CLIENT_SECRET").ok()?;
+ if client_id.is_empty() || client_secret.is_empty() {
+ return None;
+ }
+ Some(Self {
+ client_id,
+ client_secret,
+ })
+ }
+}
+
+pub fn default_user_agent() -> String {
+ std::env::var("REDDIT_USER_AGENT").unwrap_or_else(|_| {
+ "web:sorter2.social:v0.0.1 (by /u/sorter2)".to_string()
+ })
}
-/// Apply fetched entity data to a node (called from async worker).
-pub fn apply_entity(tree: &mut GlobalTree, id: &ItemId, data: EntityData) {
- tree.set_entity_data(id, data);
+async fn reddit_worker(
+ mut rx: mpsc::Receiver<RedditCommand>,
+ tree: Arc<RwLock<GlobalTree>>,
+ client: Client,
+ creds: Option<RedditCredentials>,
+) {
+ let mut in_flight = HashSet::new();
+ let mut recently_fetched: HashMap<ItemId, Instant> = HashMap::new();
+ let mut current_delay = Duration::from_secs(1);
+ let mut oauth: Option<OAuthToken> = None;
+ let cache_ttl = Duration::from_secs(300);
+
+ while let Some(cmd) = rx.recv().await {
+ let now = Instant::now();
+ recently_fetched.retain(|_, t| now.duration_since(*t) < cache_ttl);
+
+ if in_flight.contains(&cmd.id) || recently_fetched.contains_key(&cmd.id) {
+ continue;
+ }
+
+ in_flight.insert(cmd.id.clone());
+ let fetch_id = cmd.id.clone();
+
+ tokio::time::sleep(current_delay).await;
+
+ if let Some(c) = &creds {
+ oauth = ensure_oauth_token(&client, c, oauth.take()).await;
+ }
+
+ let token = oauth.as_ref().map(|t| t.access_token.as_str());
+ let use_oauth = token.is_some();
+
+ match do_fetch(&client, &fetch_id, use_oauth, token).await {
+ Ok(FetchOutcome::Entity(data)) => {
+ let mut w = tree.write().await;
+ w.set_entity_data(&fetch_id, data);
+ recently_fetched.insert(fetch_id.clone(), Instant::now());
+ current_delay = Duration::from_millis(600);
+ }
+ Ok(FetchOutcome::NotFound) => {
+ recently_fetched.insert(fetch_id.clone(), Instant::now());
+ }
+ Ok(FetchOutcome::RateLimited { reset_secs }) => {
+ let wait = Duration::from_secs(reset_secs.max(1));
+ tracing::warn!(
+ "Reddit rate limit for {}; sleeping {}s",
+ fetch_id,
+ wait.as_secs()
+ );
+ tokio::time::sleep(wait).await;
+ current_delay = (current_delay * 2).min(Duration::from_secs(60));
+ }
+ Err(e) => {
+ tracing::warn!("Reddit fetch failed for {}: {}", fetch_id, e);
+ current_delay = (current_delay * 2).min(Duration::from_secs(60));
+ }
+ }
+
+ in_flight.remove(&fetch_id);
+ }
+}
+
+enum FetchOutcome {
+ Entity(EntityData),
+ NotFound,
+ RateLimited { reset_secs: u64 },
+}
+
+async fn ensure_oauth_token(
+ client: &Client,
+ creds: &RedditCredentials,
+ existing: Option<OAuthToken>,
+) -> Option<OAuthToken> {
+ if let Some(t) = existing {
+ if Instant::now() < t.expires_at - Duration::from_secs(60) {
+ return Some(t);
+ }
+ }
+
+ let resp = client
+ .post("https://www.reddit.com/api/v1/access_token")
+ .basic_auth(&creds.client_id, Some(&creds.client_secret))
+ .form(&[("grant_type", "client_credentials")])
+ .send()
+ .await;
+
+ let resp = match resp {
+ Ok(r) => r,
+ Err(e) => {
+ tracing::warn!("Reddit OAuth token request failed: {e}");
+ return None;
+ }
+ };
+
+ if !resp.status().is_success() {
+ tracing::warn!("Reddit OAuth token HTTP {}", resp.status());
+ return None;
+ }
+
+ #[derive(Deserialize)]
+ struct TokenResponse {
+ access_token: String,
+ expires_in: u64,
+ }
+
+ let body: TokenResponse = match resp.json().await {
+ Ok(b) => b,
+ Err(e) => {
+ tracing::warn!("Reddit OAuth token parse failed: {e}");
+ return None;
+ }
+ };
+
+ Some(OAuthToken {
+ access_token: body.access_token,
+ expires_at: Instant::now() + Duration::from_secs(body.expires_in),
+ })
+}
+
+async fn do_fetch(
+ client: &Client,
+ id: &ItemId,
+ use_oauth: bool,
+ bearer: Option<&str>,
+) -> Result<FetchOutcome, String> {
+ let url = map_item_to_reddit_api(id, use_oauth);
+ if url.is_empty() {
+ return Ok(FetchOutcome::NotFound);
+ }
+
+ let mut req = client.get(&url);
+ if let Some(token) = bearer {
+ req = req.bearer_auth(token);
+ }
+
+ let resp = req.send().await.map_err(|e| e.to_string())?;
+
+ if resp.status() == StatusCode::TOO_MANY_REQUESTS {
+ let reset = rate_limit_reset_secs(&resp);
+ return Ok(FetchOutcome::RateLimited { reset_secs: reset });
+ }
+
+ if resp.status() == StatusCode::SERVICE_UNAVAILABLE {
+ return Err("Reddit unavailable (503)".to_string());
+ }
+
+ if !resp.status().is_success() {
+ return Ok(FetchOutcome::NotFound);
+ }
+
+ if rate_limit_remaining(&resp) == Some(0) {
+ let reset = rate_limit_reset_secs(&resp);
+ return Ok(FetchOutcome::RateLimited { reset_secs: reset });
+ }
+
+ let bytes = resp.bytes().await.map_err(|e| e.to_string())?;
+ Ok(parse_reddit_json(id, &bytes)
+ .map(FetchOutcome::Entity)
+ .unwrap_or(FetchOutcome::NotFound))
+}
+
+fn rate_limit_remaining(resp: &reqwest::Response) -> Option<u64> {
+ resp.headers()
+ .get("x-ratelimit-remaining")
+ .and_then(|v| v.to_str().ok())
+ .and_then(|s| s.parse::<f64>().ok())
+ .map(|f| f.floor() as u64)
+}
+
+fn rate_limit_reset_secs(resp: &reqwest::Response) -> u64 {
+ resp.headers()
+ .get("x-ratelimit-reset")
+ .and_then(|v| v.to_str().ok())
+ .and_then(|s| s.parse::<f64>().ok())
+ .map(|f| f.ceil() as u64)
+ .unwrap_or(5)
+}
+
+/// Map canonical item id to Reddit JSON API URL.
+pub fn map_item_to_reddit_api(id: &ItemId, oauth: bool) -> String {
+ let path = id.as_str();
+ if !path.starts_with("reddit.com/") && path != "reddit.com" {
+ return String::new();
+ }
+
+ let base = if oauth {
+ "https://oauth.reddit.com"
+ } else {
+ "https://www.reddit.com"
+ };
+
+ let segments: Vec<&str> = path.split('/').collect();
+
+ if let Some(i) = segments.iter().position(|&p| p == "comments") {
+ if segments.len() > i + 1 {
+ let api_path = segments[1..=i + 1].join("/");
+ return format!("{base}/{api_path}.json?raw_json=1");
+ }
+ }
+
+ if segments.len() == 3 && segments[1] == "r" {
+ return format!("{base}/r/{}/about.json?raw_json=1", segments[2]);
+ }
+
+ String::new()
+}
+
+fn parse_reddit_json(id: &ItemId, bytes: &[u8]) -> Option<EntityData> {
+ let v: serde_json::Value = serde_json::from_slice(bytes).ok()?;
+ let segments: Vec<&str> = id.as_str().split('/').collect();
+
+ if segments.iter().any(|&p| p == "comments") {
+ parse_post_listing(&v)
+ } else {
+ parse_subreddit_about(&v)
+ }
+}
+
+fn parse_subreddit_about(v: &serde_json::Value) -> Option<EntityData> {
+ let data = v.get("data")?;
+ let title = data
+ .get("title")
+ .or_else(|| data.get("display_name"))
+ .and_then(|t| t.as_str())?
+ .to_string();
+ let body_html = data
+ .get("public_description_html")
+ .or_else(|| data.get("public_description"))
+ .and_then(|t| t.as_str())
+ .map(|s| s.to_string());
+ let thumb_url = data
+ .get("icon_img")
+ .or_else(|| data.get("community_icon"))
+ .and_then(|t| t.as_str())
+ .filter(|s| !s.is_empty())
+ .map(|s| s.to_string());
+
+ Some(EntityData {
+ title,
+ author: None,
+ body_html,
+ thumb_url,
+ })
+}
+
+fn parse_post_listing(v:
… preview truncated; 4,570 characters omittedB — c_f6d0fed9bf9a (tommy-mor)
message
[1d9d8ade] init seed
diff preview
diff --git a/TEST.sh b/TEST.sh
new file mode 100755
index 0000000000000000000000000000000000000000..266b71f29259f5c2cad2617476ebe2ebc9596d39
--- /dev/null
+++ b/TEST.sh
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+set -euo pipefail
+cargo test --all
+./scripts/clj-test.sh
diff --git a/bundle.js b/bundle.js
new file mode 100644
index 0000000000000000000000000000000000000000..8d316f9a57cc7c379fe4bd8e42e092c7eac5d265
--- /dev/null
+++ b/bundle.js
@@ -0,0 +1,52 @@
+/**
+ * Slug web UI: only plumbing — fetch/eval/SSE. No product UI logic here.
+ */
+(function () {
+ function evalJs(js) {
+ if (js && String(js).trim()) {
+ eval(js);
+ }
+ }
+
+ // Theme cookie sync (runs before paint; full reload if localStorage disagrees with cookie)
+
+ function initSlugUi() {
+ // POST forms → eval response (except theme + full-navigation forms)
+ document.addEventListener('submit', async function (e) {
+ var f = e.target;
+ if (!f || f.tagName !== 'FORM') return;
+ if ((f.method || 'get').toLowerCase() !== 'post') return;
+ if (f.id === 'slug-theme-form') return;
+ if (f.getAttribute('data-navigate') === 'full') return;
+ e.preventDefault();
+ var resp = await fetch(f.action, {
+ method: 'POST',
+ body: new URLSearchParams(new FormData(f)),
+ headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+ credentials: 'same-origin',
+ });
+ evalJs(await resp.text());
+ });
+
+ // SSE: server-pushed JS
+ function connectSSE() {
+ var ssePath = window.location.pathname + window.location.search;
+ var es = new EventSource('/sse?path=' + encodeURIComponent(ssePath));
+ es.onmessage = function (e) {
+ evalJs(e.data);
+ };
+ es.onerror = function () {
+ es.close();
+ setTimeout(connectSSE, 3000);
+ };
+ }
+ connectSSE();
+ }
+
+ if (document.readyState === 'loading') {
+ document.addEventListener('DOMContentLoaded', initSlugUi);
+ } else {
+ initSlugUi();
+ }
+})();
+
diff --git a/clj-test.sh b/clj-test.sh
new file mode 100755
index 0000000000000000000000000000000000000000..b62a49b98ed60a65a46807b7ad80fa3142f14952
--- /dev/null
+++ b/clj-test.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -euo pipefail
+cd "$(dirname "$0")/.."
+mkdir -p target
+exec clojure -M:kaocha
diff --git a/forms.rs b/forms.rs
new file mode 100644
index 0000000000000000000000000000000000000000..d509fd889fde3fed2662ce0a39006b7a51ae762a
--- /dev/null
+++ b/forms.rs
@@ -0,0 +1,145 @@
+tommy@Tommys-Laptop:~/programming/slug-star/slug|main ⇒ cat server/src/form_template.rs
+//! Plan2-style JSON templates with `{"$form": "field_name"}` holes, filled from
+//! `application/x-www-form-urlencoded` (or any `String` → `String` map) **before**
+//! deserializing into a typed struct.
+//!
+//! # Wire format
+//!
+//! Templates are **compact JSON** (`serde_json::to_string`): one line, no pretty
+//! printing, strings escaped per JSON rules (`\"`, `\n`, etc.). Embed that string
+//! in HTML attributes or text nodes with normal HTML escaping (e.g. maud), not
+//! bespoke encodings.
+//!
+//! # Power vs flat hidden fields
+//!
+//! A form is always a string→string map. You can fake depth with dotted keys (`a.b.c`),
+//! but one structured blob (`__rpc__` = compact JSON) gives you nested objects,
+//! arrays, and optional fields without inventing a new naming scheme each time.
+//!
+//! # Security
+//!
+//! Substitution runs **before** `serde` into your command type. It does not fix
+//! authorization: if the client can replace the hidden `__rpc__` value, they can
+//! change the command shape unless you validate (signed blob, server-side session
+//! context, or treat the blob as hints only). Same threat model as any hidden field.
+
+use serde::Serialize;
+use serde_json::Value;
+use std::collections::HashMap;
+
+/// Serialize a value to compact JSON for a hidden `__rpc__` (or similar) field.
+pub fn template_json_compact<T: Serialize>(v: &T) -> serde_json::Result<String> {
+ serde_json::to_string(v)
+}
+
+/// Recursively walk the JSON AST and replace `{"$form": "key"}` with the submitted
+/// string for `key` (empty if missing). Other keys are unchanged.
+pub fn substitute_form_vars(val: &mut Value, form_data: &HashMap<String, String>) {
+ match val {
+ Value::Object(map) => {
+ if map.len() == 1 {
+ if let Some(Value::String(field_name)) = map.get("$form") {
+ let submitted = form_data
+ .get(field_name.as_str())
+ .map(|s| s.as_str())
+ .unwrap_or("");
+ *val = Value::String(submitted.to_string());
+ return;
+ }
+ }
+ for v in map.values_mut() {
+ substitute_form_vars(v, form_data);
+ }
+ }
+ Value::Array(arr) => {
+ for v in arr.iter_mut() {
+ substitute_form_vars(v, form_data);
+ }
+ }
+ _ => {}
+ }
+}
+
+/// Parse JSON, apply [`substitute_form_vars`], return the mutated value.
+pub fn fill_template_from_form(
+ template_json: &str,
+ form_data: &HashMap<String, String>,
+) -> Result<Value, serde_json::Error> {
+ let mut v: Value = serde_json::from_str(template_json)?;
+ substitute_form_vars(&mut v, form_data);
+ Ok(v)
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+ use serde::Deserialize;
+
+ #[derive(Debug, Deserialize, PartialEq, Eq)]
+ struct Demo {
+ room: String,
+ thread_tag: String,
+ nested: Nested,
+ }
+
+ #[derive(Debug, Deserialize, PartialEq, Eq)]
+ struct Nested {
+ text: String,
+ }
+
+ #[test]
+ fn holes_become_strings() {
+ let json = r#"{
+ "room": "public",
+ "thread_tag": {"$form": "tag"},
+ "nested": {"text": {"$form": "body"}}
+ }"#;
+ let mut form = HashMap::new();
+ form.insert("tag".into(), "foo".into());
+ form.insert("body".into(), "hello\nworld".into());
+
+ let v = fill_template_from_form(json, &form).unwrap();
+ let d: Demo = serde_json::from_value(v).unwrap();
+ assert_eq!(
+ d,
+ Demo {
+ room: "public".into(),
+ thread_tag: "foo".into(),
+ nested: Nested {
+ text: "hello\nworld".into(),
+ },
+ }
+ );
+ }
+
+ #[test]
+ fn missing_form_key_is_empty_string() {
+ let json = r#"{"x": {"$form": "nope"}}"#;
+ let mut form = HashMap::new();
+ form.insert("other".into(), "y".into());
+ let v = fill_template_from_form(json, &form).unwrap();
+ assert_eq!(v["x"], "");
+ }
+
+ #[test]
+ fn array_of_holes() {
+ let json = r#"{"items": [{"$form": "a"}, {"$form": "b"}]}"#;
+ let mut form = HashMap::new();
+ form.insert("a".into(), "1".into());
+ form.insert("b".into(), "2".into());
+ let v = fill_template_from_form(json, &form).unwrap();
+ assert_eq!(v["items"], serde_json::json!(["1", "2"]));
+ }
+
+ #[test]
+ fn template_json_compact_escapes_and_single_line() {
+ let s = template_json_compact(&serde_json::json!({
+ "x": "quote\"and\nnewline"
+ }))
+ .unwrap();
+ assert!(!s.contains('\n'));
+ assert!(s.contains("\\\"") || s.contains("\\n"));
+ }
+}
+tommy@Tommys-Laptop:~/programming/slug-star/slug|main ⇒
+
diff --git a/gameifying.tdsl b/gameifying.tdsl
new file mode 100644
index 0000000000000000000000000000000000000000..93d2a61d94fcba4370c82d9612e6bb0f0318cc15
--- /dev/null
+++ b/gameifying.tdsl
@@ -0,0 +1,2 @@
+consider gating certain views (top all time?) by a 10 day usage streak.. or something like that.
+or like a path, on homepage(?), that shows day 1: r/amitheasshole, day2: r/aww, day3: gaming, or something like that. progressive revelation + usage incentive.
diff --git a/pagerank_streaming.tdsl b/pagerank_streaming.tdsl
new file mode 100644
index 0000000000000000000000000000000000000000..0f2231b94936c17610adf653ca26b0faa6f2ac3a
--- /dev/null
+++ b/pagerank_streaming.tdsl
@@ -0,0 +1,11 @@
+eventually i want to have ranking histories.
+like "visionary" and "fraud" waxing and waning in a uplot graph over time for #elon-musk.
+there are too many query combinations to precomupte the ranking histories
+(arbitrary user filters, and tag overlap combinations maybe),
+so we're just going to have to calculate them all on demand.
+computers are fast, its okay. for each vote, we need to calculate rank centrality again.
+i was thinking, for n votes we calculate the rank centrality,
+and get node weights. we then output that data to the client (over websocket, or testable barrier).
+then we calculate n+1 votes, _but we keep the node weights in memory_
+so the rank centrality process converges faster.
+this also has the side effect of making the ranking stream in satisfyingly as you load the page.
diff --git a/parser.rs b/parser.rs
new file mode 100644
index 0000000000000000000000000000000000000000..2b87b974f8d1dd93bee35681d87668a94e4ef349
--- /dev/null
+++ b/parser.rs
@@ -0,0 +1,1808 @@
+use std::collections::HashMap;
+use std::rc::Rc;
+use std::cell::RefCell;
+use crate::ui::action::UIAction;
+use crate::ui::types::{Suggestion, GuideOption, ScrollingSuggestion};
+
+// --- Core Abstractions ---
+
+/// Unique identifier for nodes in the graph
+type NodeId = &'static str;
+
+/// Pattern matching for edges
+#[derive(Debug, Clone)]
+pub enum EdgePattern {
+ /// Matches exact literal string
+ Literal(&'static str),
+
+ /// Matches any prefix of a string and suggests the full string
+ /// e.g., PrefixOf("reddit.com") matches "r", "re", "red", "reddit", "reddit.com"
+ PrefixOf(&'static str),
+
+ /// Captures a variable segment (e.g., subreddit name, username)
+ Variable(&'static str),
+
+ /// Matches any string (wildcard)
+ Any,
+}
+
+impl EdgePattern {
+ /// Try to match this pattern against input, return (consumed_chars, captured_value)
+ fn matches(&self, input: &str) -> Option<(usize, Option<String>)> {
+ match self {
+ EdgePattern::Literal(lit) => {
+ if input.starts_with(lit) {
+ Some((lit.len(), None))
+ } else {
+ None
+ }
+ }
+ EdgePattern::PrefixOf(target) => {
+ // Check if input is a prefix of target
+ if target.starts_with(input) && !input.is_empty() {
+ // It's a valid prefix
+ Some((input.len(), None))
+ } else if input.starts_with(target) {
+ // Full match
+ Some((target.len(), None))
+ } else {
+ None
+ }
+ }
+ EdgePattern::Variable(var_name) => {
+ // Consume until next '/' or end of string
+ let end = input.find('/').unwrap_or(input.len());
+ if end > 0 {
+ let captured = input[..end].to_string();
+ // Validate based on variable type
+ if is_valid_variable(var_name, &captured) {
+ Some((end, Some(captured)))
+ } else {
+ None
+ }
+ } else {
+ None
+ }
+ }
+ EdgePattern::Any => {
+ // Match everything until next '/' or end
+ let end = input.find('/').unwrap_or(input.len());
+ if end > 0 {
+ Some((end, Some(input[..end].to_string())))
+ } else {
+ None
+ }
+ }
+ }
+ }
+
+ /// G
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