this repo has no description
lewis.moe
1use crate::api::read_after_write::{
2 extract_repo_rev, format_local_post, format_munged_response, get_local_lag,
3 get_records_since_rev, insert_posts_into_feed, proxy_to_appview, FeedOutput, FeedViewPost,
4 ProfileRecord, RecordDescript,
5};
6use crate::state::AppState;
7use axum::{
8 extract::{Query, State},
9 http::StatusCode,
10 response::{IntoResponse, Response},
11 Json,
12};
13use serde::Deserialize;
14use std::collections::HashMap;
15use tracing::warn;
16
17#[derive(Deserialize)]
18pub struct GetAuthorFeedParams {
19 pub actor: String,
20 pub limit: Option<u32>,
21 pub cursor: Option<String>,
22 pub filter: Option<String>,
23 #[serde(rename = "includePins")]
24 pub include_pins: Option<bool>,
25}
26
27fn update_author_profile_in_feed(
28 feed: &mut [FeedViewPost],
29 author_did: &str,
30 local_profile: &RecordDescript<ProfileRecord>,
31) {
32 for item in feed.iter_mut() {
33 if item.post.author.did == author_did {
34 if let Some(ref display_name) = local_profile.record.display_name {
35 item.post.author.display_name = Some(display_name.clone());
36 }
37 }
38 }
39}
40
41pub async fn get_author_feed(
42 State(state): State<AppState>,
43 headers: axum::http::HeaderMap,
44 Query(params): Query<GetAuthorFeedParams>,
45) -> Response {
46 let auth_header = headers.get("Authorization").and_then(|h| h.to_str().ok());
47 let auth_user = if let Some(h) = auth_header {
48 if let Some(token) = crate::auth::extract_bearer_token_from_header(Some(h)) {
49 crate::auth::validate_bearer_token(&state.db, &token).await.ok()
50 } else {
51 None
52 }
53 } else {
54 None
55 };
56 let auth_did = auth_user.as_ref().map(|u| u.did.clone());
57 let auth_key_bytes = auth_user.as_ref().and_then(|u| u.key_bytes.clone());
58 let mut query_params = HashMap::new();
59 query_params.insert("actor".to_string(), params.actor.clone());
60 if let Some(limit) = params.limit {
61 query_params.insert("limit".to_string(), limit.to_string());
62 }
63 if let Some(cursor) = ¶ms.cursor {
64 query_params.insert("cursor".to_string(), cursor.clone());
65 }
66 if let Some(filter) = ¶ms.filter {
67 query_params.insert("filter".to_string(), filter.clone());
68 }
69 if let Some(include_pins) = params.include_pins {
70 query_params.insert("includePins".to_string(), include_pins.to_string());
71 }
72 let proxy_result =
73 match proxy_to_appview("app.bsky.feed.getAuthorFeed", &query_params, auth_did.as_deref().unwrap_or(""), auth_key_bytes.as_deref()).await {
74 Ok(r) => r,
75 Err(e) => return e,
76 };
77 if !proxy_result.status.is_success() {
78 return proxy_result.into_response();
79 }
80 let rev = match extract_repo_rev(&proxy_result.headers) {
81 Some(r) => r,
82 None => return proxy_result.into_response(),
83 };
84 let mut feed_output: FeedOutput = match serde_json::from_slice(&proxy_result.body) {
85 Ok(f) => f,
86 Err(e) => {
87 warn!("Failed to parse author feed response: {:?}", e);
88 return proxy_result.into_response();
89 }
90 };
91 let requester_did = match &auth_did {
92 Some(d) => d.clone(),
93 None => return (StatusCode::OK, Json(feed_output)).into_response(),
94 };
95 let actor_did = if params.actor.starts_with("did:") {
96 params.actor.clone()
97 } else {
98 let hostname = std::env::var("PDS_HOSTNAME").unwrap_or_else(|_| "localhost".to_string());
99 let suffix = format!(".{}", hostname);
100 let short_handle = if params.actor.ends_with(&suffix) {
101 params.actor.strip_suffix(&suffix).unwrap_or(¶ms.actor)
102 } else {
103 ¶ms.actor
104 };
105 match sqlx::query_scalar!("SELECT did FROM users WHERE handle = $1", short_handle)
106 .fetch_optional(&state.db)
107 .await
108 {
109 Ok(Some(did)) => did,
110 Ok(None) => return (StatusCode::OK, Json(feed_output)).into_response(),
111 Err(e) => {
112 warn!("Database error resolving actor handle: {:?}", e);
113 return proxy_result.into_response();
114 }
115 }
116 };
117 if actor_did != requester_did {
118 return (StatusCode::OK, Json(feed_output)).into_response();
119 }
120 let local_records = match get_records_since_rev(&state, &requester_did, &rev).await {
121 Ok(r) => r,
122 Err(e) => {
123 warn!("Failed to get local records: {}", e);
124 return proxy_result.into_response();
125 }
126 };
127 if local_records.count == 0 {
128 return (StatusCode::OK, Json(feed_output)).into_response();
129 }
130 let handle = match sqlx::query_scalar!("SELECT handle FROM users WHERE did = $1", requester_did)
131 .fetch_optional(&state.db)
132 .await
133 {
134 Ok(Some(h)) => h,
135 Ok(None) => requester_did.clone(),
136 Err(e) => {
137 warn!("Database error fetching handle: {:?}", e);
138 requester_did.clone()
139 }
140 };
141 if let Some(ref local_profile) = local_records.profile {
142 update_author_profile_in_feed(&mut feed_output.feed, &requester_did, local_profile);
143 }
144 let local_posts: Vec<_> = local_records
145 .posts
146 .iter()
147 .map(|p| {
148 format_local_post(
149 p,
150 &requester_did,
151 &handle,
152 local_records.profile.as_ref(),
153 )
154 })
155 .collect();
156 insert_posts_into_feed(&mut feed_output.feed, local_posts);
157 let lag = get_local_lag(&local_records);
158 format_munged_response(feed_output, lag)
159}