Add server emoji picker

src/web/routes/dashboard/api/guild/emojis.rs

@@ -0,0 +1,84 @@
+use std::{collections::HashMap, sync::OnceLock, time::Instant};
+
+use log::{info, warn};
+use rocket::{get, http::CookieJar, serde::json::json, State};
+use serde::Serialize;
+use serenity::{client::Context, model::id::GuildId};
+use tokio::sync::RwLock;
+
+use crate::web::{check_authorization, routes::JsonResult};
+
+#[derive(Serialize, Clone)]
+struct EmojiInfo {
+    fmt: String,
+    name: String,
+}
+
+#[derive(Clone)]
+struct EmojiCache {
+    emojis: Vec<EmojiInfo>,
+    timestamp: Instant,
+}
+
+const CACHE_LENGTH: u64 = 120;
+
+static EMOJI_CACHE: OnceLock<RwLock<HashMap<GuildId, EmojiCache>>> = OnceLock::new();
+
+#[get("/api/guild/<id>/emojis")]
+pub async fn get_guild_emojis(
+    id: u64,
+    cookies: &CookieJar<'_>,
+    ctx: &State<Context>,
+) -> JsonResult {
+    offline!(Ok(json!(vec![] as Vec<EmojiInfo>)));
+    check_authorization(cookies, ctx.inner(), id).await?;
+
+    let cache_value = {
+        let cache = EMOJI_CACHE.get_or_init(|| RwLock::new(HashMap::new()));
+        let read_lock = cache.read().await;
+        read_lock.get(&GuildId::new(id)).cloned()
+    };
+
+    if let Some(emojis) = cache_value
+        .map(|v| {
+            if Instant::now().duration_since(v.timestamp).as_secs() < CACHE_LENGTH {
+                Some(v.emojis)
+            } else {
+                None
+            }
+        })
+        .flatten()
+    {
+        Ok(json!(emojis))
+    } else {
+        let emojis_res = ctx.http.get_emojis(GuildId::new(id)).await;
+
+        match emojis_res {
+            Ok(emojis) => {
+                let emojis = emojis
+                    .iter()
+                    .map(|emoji| EmojiInfo {
+                        fmt: format!("{}", emoji),
+                        name: emoji.name.to_string(),
+                    })
+                    .collect::<Vec<EmojiInfo>>();
+
+                {
+                    let cache = EMOJI_CACHE.get_or_init(|| RwLock::new(HashMap::new()));
+                    let mut write_lock = cache.write().await;
+                    write_lock.insert(
+                        GuildId::new(id),
+                        EmojiCache { emojis: emojis.clone(), timestamp: Instant::now() },
+                    );
+                }
+
+                Ok(json!(emojis))
+            }
+            Err(e) => {
+                warn!("Could not fetch emojis from {}: {:?}", id, e);
+
+                json_err!("Could not get emojis")
+            }
+        }
+    }
+}

src/web/routes/dashboard/api/guild/mod.rs

@@ -1,14 +1,16 @@
 mod channels;
+mod emojis;
 mod reminders;
 mod roles;
 mod templates;
 
 use std::env;
 
-pub use channels::*;
+pub use channels::get_guild_channels;
+pub use emojis::get_guild_emojis;
 pub use reminders::*;
 use rocket::{get, http::CookieJar, serde::json::json, State};
-pub use roles::*;
+pub use roles::get_guild_roles;
 use serenity::{
     client::Context,
     model::id::{GuildId, RoleId},