Added override file

.env.example

@@ -1,3 +1,10 @@
 DISCORD_TOKEN=
 LASTFM_API_KEY=
 DATABASE_URL=sqlite:watcat.db
+
+# optional, for spotify support
+RSPOTIFY_CLIENT_ID=
+RSPOTIFY_CLIENT_SECRET=
+
+# optional, to set color cache size. set to 0 to disable
+MAX_CACHE_SIZE=

.gitignore

@@ -1,3 +1,5 @@
 /target
 /.env
 /watcat.db*
+/http-cacache
+/overrides.txt

Cargo.toml

@@ -1,18 +1,26 @@
 [package]
 name = "watcat"
-version = "0.1.0"
+version = "0.6.2"
 edition = "2024"
 
 [dependencies]
 serenity = "0.12"
 lastfm = "0.10.0"
+dotenvy = "0.15.7"
+reqwest = "0.12"
+reqwest-middleware = "0.4.2"
+http-cache-reqwest = "0.15.1"
+palette = "0.7.6"
+rspotify = "0.15.0"
+# text rendering dependencies
+arabic_reshaper = "0.4.2"
+unicode-bidi = "0.3.18"
+image = "0.25.6"
+imagetext = { git = "https://github.com/nathanielfernandes/imagetext" }
 
 [dependencies.magick_rust]
 path = "./magick-rust"
 
-[dependencies.dotenvy]
-version = "0.15.7"
-
 [dependencies.tokio]
 version = "1.21.2"
 features = ["macros", "rt-multi-thread"]

LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2025, Seoxi Ryouko
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+    * Neither the name of watcat nor the names of its contributors
+      may be used to endorse or promote products derived from this software
+      without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

@@ -8,7 +8,7 @@ why?
 
 cosmo relies on [imagetext-py](https://github.com/nathanielfernandes/imagetext-py), which either does not have a freebsd wheel or else uv cannot find it
 
-~~also I'm a rust shill and python hater and just needed an excuse~~
+now it seems that magick-rust can't link on freebsd... guess I'll die
 
 but your code sucks
 -------------------
@@ -24,3 +24,18 @@ create the database ``sqlx database create``
 (note: make sure you have sqlx installed first)
 
 init the database ``sqlx migrate run``
+
+TODO
+----
+
++ ~~add art and lastfm url fetching~~
++ ~~add help command~~
++ ~~refactor to combine repeated parts of art, url, and fmi.~~
++ ~~use macro for commands~~
++ ~~use Option instead of empty string sentinel value~~
++ ~~add cache for album art colors~~
++ ~~add spotify link fetching~~
++ ~~add arbitrary spotify searching~~
++ ~~use static seed for kmeans~~
++ make various parameters user-configurable
++ use tiny-skia instead of magick-rust?

src/main.rs

@@ -1,5 +1,8 @@
 extern crate dotenvy;
 extern crate lastfm;
+extern crate reqwest;
+extern crate reqwest_middleware;
+use http_cache_reqwest::{CACacheManager, Cache, CacheMode, HttpCache, HttpCacheOptions,};
 
 use serenity::async_trait;
 use serenity::builder::{CreateAttachment, CreateMessage};
@@ -8,14 +11,34 @@ use serenity::model::id::UserId;
 use serenity::prelude::*;
 
 extern crate magick_rust;
-use magick_rust::{ColorspaceType, CompositeOperator, MagickWand, PixelWand, magick_wand_genesis};
+use magick_rust::{
+    ColorspaceType, CompositeOperator, FilterType, MagickWand, PixelWand, magick_wand_genesis,
+};
+use magick_rust::bindings::MagickSetSeed;
 
 use std::env;
-use std::sync::Once;
+use std::collections::HashMap;
+use std::sync::{Arc, Once};
+use tokio::sync::Mutex;
+
+use palette::color_difference::ImprovedCiede2000;
+use palette::lab::Lab;
+use palette::white_point::D65;
 
 extern crate sqlx;
 use sqlx::sqlite::SqlitePool;
 
+use rspotify::model::{enums::types::SearchType, search::SearchResult};
+use rspotify::{ClientCredsSpotify, Credentials, clients::BaseClient};
+
+use imagetext::fontdb::FontDB;
+use imagetext::superfont::SuperFont;
+
+use std::time::SystemTime;
+use std::io::Read;
+
+mod text;
+
 static START: Once = Once::new();
 
 struct Handler;
@@ -25,10 +48,36 @@ enum Reply {
     Text(String),
 }
 
+macro_rules! now {
+    () => {
+        std::time::SystemTime::now()
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap()
+            .as_secs_f32() as usize
+    };
+}
+
+macro_rules! log {
+	($a:expr) => {
+		if env::var("DEBUG").unwrap_or("0".to_owned()) == "1" {
+			println!(concat!("debug: {} ", $a), now!())
+		}
+	};
+
+	($a:expr, $($b:expr),+) => {
+		if env::var("DEBUG").unwrap_or("0".to_owned()) == "1" {
+			println!(concat!("debug: {} ", $a), now!(), $($b),+)
+		}
+	};
+}
+
 macro_rules! handle_magick_result {
     ($a: expr, $b: literal) => {
         match $a {
-            Ok(_) => {}
+            Ok(a) => {
+                log!("{} run successfully", stringify!($a));
+                a
+            }
             Err(e) => return Reply::Text(format!("Error: {} {}", $b, e)),
         }
     };
@@ -38,46 +87,202 @@ macro_rules! handle_magick_option {
     ($a: expr, $b: literal) => {
         match $a {
             Some(res) => res,
-            None => return Reply::Text($b.to_string()),
+            None => return Reply::Text($b.to_owned()),
         }
     };
 }
 
-#[allow(unused)]
-async fn fmi(ctx: &Context, arg: &str, id: UserId) -> Reply {
+// this function is almost assuredly the least idiomatic rust code I will ever write.
+// but until I know what the "correct" way is, it'll have to do
+fn parse_cielab(s: String) -> Result<(f32, f32, f32), &'static str> {
+    if s.len() < 13 || &s[0..7] != "cielab(" || s.chars().nth(s.len() - 1).unwrap() != ')' {
+        return Err("Error parsing cielab string");
+    }
+    let vals = s[7..(s.len() - 1)]
+        .split(",")
+        .map(|x| match x.parse() {
+            Ok(f) => f,
+            Err(_) => f32::NAN,
+        })
+        .collect::<Vec<f32>>();
+    if vals.iter().any(|x| x.is_nan()) {
+        return Err("Error parsing cielab string");
+    }
+    match &vals[..] {
+        &[a, b, c] => Ok((a, b, c)),
+        _ => Err("Error parsing cielab string"),
+    }
+}
+
+fn validate_color(col: &PixelWand) -> Option<Lab> {
+    let color_str = match col.get_color_as_string() {
+        Ok(s) => s,
+        Err(_) => return None,
+    };
+    let color_raw = match parse_cielab(color_str) {
+        Ok(f) => f,
+        Err(_) => return None,
+    };
+    Some(Lab::<D65>::from_components(color_raw))
+}
+
+async fn get_track(
+    ctx: &Context,
+    arg: Option<&str>,
+    id: UserId,
+) -> Result<lastfm::track::NowPlayingTrack, Reply> {
     let lastfm_user = match arg {
-        "" => get_lastfm_username(ctx, id).await,
-        _ => Some(arg.to_string()),
+        None => get_lastfm_username(ctx, id).await,
+        Some(user) => Some(user.to_owned()),
     };
-    let client = match lastfm_user {
+    let lastfm_client = match lastfm_user {
         Some(s) => lastfm::Client::<String, String>::from_env(s),
-    	None => return Reply::Text("No last.fm username set.".to_string()),
+        None => return Err(Reply::Text("No last.fm username set.".to_owned())),
     };
-    let now_playing = match client.now_playing().await {
+    let now_playing = match lastfm_client.now_playing().await {
         Ok(np) => np,
-        Err(e) => return Reply::Text(format!("Error: grabbing last.fm user data failed {e}")),
+        Err(e) => {
+            return Err(Reply::Text(format!(
+                "Error: grabbing last.fm user data failed {e}"
+            )));
+        }
     };
     let track = match now_playing {
         Some(track) => track,
-        None => return Reply::Text("Nothing playing.".to_string()),
+        None => return Err(Reply::Text("Nothing playing.".to_owned())),
     };
-    let image_uri = match track.image.extralarge {
-        Some(iu) => iu,
-        None => return Reply::Text("Error: getting image uri failed".to_string()),
-    };
-    let mut base_color = PixelWand::new();
-    let mut white = PixelWand::new();
-    let mut main_wand = MagickWand::new();
-    let mut art_wand = MagickWand::new();
-    let mut art_wand_cluster = MagickWand::new();
-    let mut mask_wand = MagickWand::new();
+    Ok(track)
+}
 
+async fn art(ctx: &Context, arg: Option<&str>, id: UserId) -> Reply {
+    let track = match get_track(ctx, arg, id).await {
+        Ok(track) => track,
+        Err(e) => return e,
+    };
+    let track_art = match track.image.extralarge {
+        Some(track_art) => track_art,
+        None => return Reply::Text("Error: getting image uri failed".to_owned()),
+    };
+    Reply::Text(track_art.to_owned())
+}
+
+async fn url(ctx: &Context, arg: Option<&str>, id: UserId) -> Reply {
+    let track = match get_track(ctx, arg, id).await {
+        Ok(track) => track,
+        Err(e) => return e,
+    };
+    Reply::Text(track.url)
+}
+
+async fn spot(ctx: &Context, arg: Option<&str>, id: UserId) -> Reply {
+    let track = match get_track(ctx, arg, id).await {
+        Ok(track) => track,
+        Err(e) => return e,
+    };
+    let mut data = ctx.data.write().await;
+	let spotify_option = data.get_mut::<SpotifyHaver>().expect("Failed to have spotify option");
+	if spotify_option.is_none() {
+		return Reply::Text("Unable to use Spotify commands: Contact bot Administrator.".to_owned())
+	}
+	let spotify_arc_mutex = spotify_option.as_mut().unwrap();
+	let spotify_client = spotify_arc_mutex.lock().await;
+	spotify_client.request_token().await.unwrap();
+	let search = spotify_client.search(format!("{} {}", track.name, track.artist.name).as_str(), SearchType::Track, None, None, None, None).await;
+	let tracks = match search {
+		Ok(SearchResult::Tracks(track_page)) => track_page,
+		Err(e) => return Reply::Text(format!("Failed to get track {e}")),
+		_ => return Reply::Text("Spotify search failed".to_owned()),
+	};
+	match &tracks.items.first().map(|x| x.external_urls.get("spotify")) {
+		Some(Some(url)) => Reply::Text(url.to_owned().to_owned()),
+		_ => Reply::Text("Unable to get spotify url".to_owned()),
+	}
+}
+
+async fn get_overrides_inner(last_modified: Option<SystemTime>) -> Option<HashMap<String, String>> {
+	let mut file = match std::fs::File::open("overrides.txt") {
+		Ok(a) => a,
+		Err(_) => return None,
+	};
+	let file_stats = match file.metadata() {
+		Ok(a) => a,
+		Err(_) => return None,		
+	};
+	let file_modified_time = match file_stats.modified() {
+		Ok(a) => a,
+		Err(_) => return None,
+	};
+	let reload = match last_modified {
+		None => true,
+		Some(last_modified) => match file_modified_time.duration_since(last_modified) {
+			Err(_) => true,
+			Ok(a) => a != std::time::Duration::default()
+		}
+	};
+	if !reload { return None; }
+	let mut contents = "".to_owned();
+	match file.read_to_string(&mut contents) {
+		Ok(_) => (),
+		Err(_) => return None,
+	};
+	Some(contents.as_str().lines().map(|x| {
+		let mut split = x.split("@");
+		let a: &str = split.next().unwrap_or("").trim();
+		let b: &str  = split.next().unwrap_or("").trim();
+		(a.to_owned(), b.to_owned())
+	}).collect())
+}
+
+async fn get_overrides(ctx: &Context) -> HashMap<String, String> {
+	let data = ctx.data.write().await;
+	let overrides = data.get::<OverridesHaver>().expect("Failed to have overrides");
+	let mut map = overrides.map.lock().await;
+	let new_map = get_overrides_inner(overrides.last_modified).await;
+	if let Some(new_map) = new_map {
+		*map = new_map;
+	}
+	map.clone()
+}
+
+async fn fmi(ctx: &Context, arg: Option<&str>, id: UserId, avatar: Option<String>) -> Reply {
+    let track = match get_track(ctx, arg, id).await {
+        Ok(track) => track,
+        Err(e) => return e,
+    };
+    let track_info = text::TrackInfo {
+        title: track.name,
+        artist: track.artist.name,
+        album: track.album,
+    };
+    let original_image_uri = match track.image.extralarge {
+        Some(iu) => iu,
+        None => return Reply::Text("Error: getting image uri failed".to_owned()),
+    };
+
+    let overrides = get_overrides(ctx).await;
+    let image_uri: String = match overrides.get(&format!("{} | {}", track_info.artist, track_info.album)) {
+    	Some(s) => s,
+    	None => match overrides.get(&track_info.album) {
+    		Some(s) => s,
+    		None => &original_image_uri,
+    	},
+    }.to_owned();
+
+    let mut base_color = PixelWand::new();
+    let mut accent_color = PixelWand::new();
+    let mut white = PixelWand::new();
+    let main_wand = MagickWand::new();
+    let art_wand = MagickWand::new();
+    let mut art_wand_cluster = MagickWand::new();
+    let mask_wand = MagickWand::new();
+    let text_image_wand = MagickWand::new();
+
+	let image = match get_image(ctx, image_uri.as_str()).await {
+	    Ok(i) => i,
+	    Err(e) => return Reply::Text(format!("{e}")),
+	};
 	handle_magick_result!(
-        base_color.set_color("#7f7f7f"),
-        "Failed to set init base color"
-    );
-    handle_magick_result!(
-        art_wand.read_image(image_uri.as_str()),
+	    art_wand.read_image_blob(image),
 	    "Failed to read image from uri"
 	);
 	handle_magick_result!(
@@ -85,6 +290,26 @@ async fn fmi(ctx: &Context, arg: &str, id: UserId) -> Reply {
 	    "Failed to set art colorspace"
 	);
 	
+	handle_magick_result!(
+	    base_color.set_color("#7f7f7f"),
+	    "Failed to set init base color"
+	);
+	
+	let color_cache_entry = {
+    	let data = ctx.data.write().await;
+		let color_cache = data.get::<ColorsHaver>().expect("Failed to have colors option");
+		if color_cache.max > 0 {
+			let color_cache_map = color_cache.map.lock().await;
+			color_cache_map.get(image_uri.as_str()).map(|s| s.to_owned())
+		} else {
+			None
+		}
+	};
+		
+
+    let (base_lab, accent_lab) = match color_cache_entry {
+    	Some(value) => value.to_owned(),
+    	None => {
 		    let (art_width, art_height) = (art_wand.get_image_width(), art_wand.get_image_height());
 	    	handle_magick_result!(
 	    	    art_wand_cluster.new_image(art_width, art_height, &base_color),
@@ -99,8 +324,9 @@ async fn fmi(ctx: &Context, arg: &str, id: UserId) -> Reply {
 	    	    art_wand_cluster.set_image_colorspace(ColorspaceType::Lab),
 	    	    "Failed to set cluster colorspace"
 	    	);
+	    	unsafe { MagickSetSeed(0x5F3759DF); }
 	    	handle_magick_result!(
-        art_wand_cluster.kmeans(5, 200, 0.001),
+	    	    art_wand_cluster.kmeans(10, 200, 0.001),
 	    	    "Failed to run kmeans"
 	    	);
 	    	let mut colors = handle_magick_option!(
@@ -108,20 +334,119 @@ async fn fmi(ctx: &Context, arg: &str, id: UserId) -> Reply {
 	    	    "Failed to get color histogram"
 	    	);
 	    	colors.sort_by_cached_key(|color| -(color.get_color_count() as isize));
-    let mut accent_color = match colors.len() {
-        1 => &colors[0],
-        _ => &colors[1],
+	    	let base_lab = validate_color(&colors[0]).expect("Failed to validate base color");
+	    	let other_colors = colors
+	    	    .iter()
+	    	    .filter_map(|col| {
+	    	        let testing_color = validate_color(col)?;
+	    	        match testing_color.improved_difference(base_lab) {
+	    	            10.0.. => Some(testing_color),
+	    	            _ => None,
+	    	        }
+	    	    })
+	    	    .collect::<Vec<_>>();
+	    	let mut accent_lab = "cielab(0.0,0.0,0.0)".to_owned();
+			if let Some(color) = other_colors.first() {
+			    accent_lab = format!("cielab{:?}", color.into_components());
+			}
+			let base_lab = handle_magick_result!(colors[0].get_color_as_string(), "Failed to serialize base color");
+	    	let data = ctx.data.write().await;
+			let color_cache = data.get::<ColorsHaver>().expect("Failed to have colors option");
+			let mut color_cache_map = color_cache.map.lock().await;
+			if color_cache_map.keys().len() > color_cache.max {
+				let key: String = color_cache_map.iter().next().unwrap().0.to_owned();
+				color_cache_map.remove(&key);
+			}
+			color_cache_map.insert(image_uri, (base_lab.clone(), accent_lab.clone()));
+	    	(base_lab, accent_lab)
+    	}
     };
 
-    handle_magick_result!(white.set_color("#ffffff"), "Failed to set init white");
-    handle_magick_result!(mask_wand.read_image("mask.png"), "Failed to load mask");
+    handle_magick_result!(base_color.set_color(base_lab.as_str()), "Failed to deserialize base color");
+    handle_magick_result!(accent_color.set_color(accent_lab.as_str()), "Failed to deserialize accent color");
+
+    let use_dark_color = match validate_color(&base_color) {
+        Some(color) => {
+            let black_delta_e = Lab::<D65>::new(0.0, 0.0, 0.0).improved_difference(color);
+            let white_delta_e = Lab::<D65>::new(100.0, 0.0, 0.0).improved_difference(color);
+            black_delta_e > white_delta_e
+        }
+        _ => false,
+    };
+
+    handle_magick_result!(white.set_color("#ffffff"), "Failed to init white");
     handle_magick_result!(
-        mask_wand.opaque_paint_image(&white, accent_color, 0.0, false),
-        "Failed to paint mask"
+        mask_wand.read_image_blob(include_bytes!("accent_mask.png")),
+        "Failed to load mask"
+    );
+    handle_magick_result!(
+        mask_wand.opaque_paint_image(&white, &accent_color, 0.0, false),
+        "Failed to paint accent mask"
+    );
+
+    let avatar_wand = MagickWand::new();
+    match avatar {
+        Some(avatar_uri) => {
+            if let Ok(avatar) = get_image(ctx, avatar_uri.as_str()).await {
+                handle_magick_result!(
+                    avatar_wand.read_image_blob(avatar),
+                    "Failed to load user avatar"
+                );
+            } else {
+                handle_magick_result!(
+                    avatar_wand.new_image(100, 100, &white),
+                    "Failed to load dummy avatar"
+                );
+            }
+        }
+        None => handle_magick_result!(
+            avatar_wand.new_image(100, 100, &white),
+            "Failed to load dummy avatar"
+        ),
+    }
+    let avatar_mask_wand = MagickWand::new();
+    handle_magick_result!(
+        avatar_mask_wand.read_image_blob(include_bytes!("avatar_mask.png")),
+        "Failed to load avatar mask"
+    );
+    handle_magick_result!(
+        avatar_wand.compose_images(&avatar_mask_wand, CompositeOperator::CopyAlpha, false, 0, 0),
+        "Failed to mask avatar"
+    );
+    handle_magick_result!(
+        avatar_wand.resize_image(64, 64, FilterType::RobidouxSharp),
+        "Failed to resize avatar"
+    );
+    handle_magick_result!(
+        avatar_wand.transform_image_colorspace(ColorspaceType::Lab),
+        "Failed to set avatar colorspace"
+    );
+
+    let (image_width, image_height) = (548, 147);
+    let data = ctx.data.write().await;
+    let fonts = data.get::<FontsHaver>().expect("Failed to load fonts");
+    let text_image_blob = match text::fmi_text(
+        image_width,
+        image_height,
+        track_info,
+        fonts,
+        19.0,
+        use_dark_color,
+    ) {
+        Ok(bytes) => bytes,
+        Err(e) => return Reply::Text(e),
+    };
+    handle_magick_result!(
+        text_image_wand.read_image_blob(&text_image_blob),
+        "Failed to load text image"
+    );
+    handle_magick_result!(
+        text_image_wand.transform_image_colorspace(ColorspaceType::Lab),
+        "Failed to set avatar colorspace"
     );
 
     handle_magick_result!(
-        main_wand.new_image(548, 147, &colors[0]),
+        main_wand.new_image(image_width as usize, image_height as usize, &base_color),
         "Failed to create wand"
     );
     handle_magick_result!(
@@ -129,17 +454,23 @@ async fn fmi(ctx: &Context, arg: &str, id: UserId) -> Reply {
         "Failed to set main colorspace"
     );
     handle_magick_result!(
-        art_wand.adaptive_resize_image(124, 124),
+        art_wand.resize_image(124, 124, FilterType::RobidouxSharp),
         "Failed to resize art"
     );
-    handle_magick_result!(
+    /*handle_magick_result!(
         art_wand_cluster.adaptive_resize_image(124, 124),
         "Failed to resize art_cluster"
-    );
+    );*/
     handle_magick_result!(
         main_wand.compose_images(&art_wand, CompositeOperator::SrcOver, false, 12, 12),
-        "Failed to combine images"
+        "Failed to combine art image"
     );
+    handle_magick_result!(
+        main_wand.compose_images(&mask_wand, CompositeOperator::SrcOver, false, 401, 0),
+        "Failed to combine mask"
+    );
+    #[cfg(debug_assertions)]
+    if env::var("DEBUG_IMAGE").unwrap_or("0".to_owned()) == "1" {
         handle_magick_result!(
             main_wand.compose_images(
                 &art_wand_cluster,
@@ -148,29 +479,152 @@ async fn fmi(ctx: &Context, arg: &str, id: UserId) -> Reply {
                 160,
                 12
             ),
-        "Failed to combine debug images"
+            "Failed to combine debug image"
+        );
+    }
+    handle_magick_result!(
+        main_wand.compose_images(&text_image_wand, CompositeOperator::SrcOver, false, 0, 0),
+        "Failed to combine mask"
     );
     handle_magick_result!(
-        main_wand.compose_images(&mask_wand, CompositeOperator::SrcOver, false, 401, 0),
-        "Failed to combine mask"
+        main_wand.compose_images(&avatar_wand, CompositeOperator::SrcOver, false, 473, 73),
+        "Failed to combine avatar image"
     );
     Reply::Image(main_wand.write_image_blob("png").unwrap())
 }
 
+async fn text(ctx: &Context, arg: Option<&str>, id: UserId) -> Reply {
+    let track = match get_track(ctx, arg, id).await {
+        Ok(track) => track,
+        Err(e) => return e,
+    };
+    Reply::Text(format!(
+    	"{}\n{}\n{}", 
+        track.name,
+        track.artist.name,
+        track.album,
+    ))
+}
+
+fn help(arg: Option<&str>) -> Reply {
+    Reply::Text(format!(
+        "```{}```",
+        match arg {
+            None =>
+            	"usage: .k <img|set|art|url|spotify|help> [lastfm user]\n       .k img [lastfm user]:         get now playing\n       .k set <lastfm user>:         sets your username for the future\n       .k art [lastfm user]:         get now playing album art\n       .k url [lastfm user]:         get now playing lastfm url\n       .k spot [lastfm user]:        get now playing spotify link\n       .k search <search query>:     searches spotify\n       .k help [command]: displays a help message"
+                .to_owned(),
+            Some("img" | "fmi" | "fm" | "get") =>
+				"usage: .k img [lastfm user]\nreturns a pretty-printed image of the user's now playing track on last.fm, using the album art's colors to theme the image. see also: .k set\naliases: .kfmi, .k <fmi|get|img>, .kf, .ki, or even just .k"
+                .to_owned(),
+            Some("set") =>
+            	"usage: .k set <lastfm user>\nties a lastfm username to your account. use this to not require your username for .k fmi every time, for example\naliases: .kset"
+                .to_owned(),
+            Some("art") =>
+				"usage: .k art [lastfm user]\nfetches user's now playing track's album art\naliases: .k art, .kart, .ka"
+                .to_owned(),
+            Some("url" | "link") =>
+            	"usage: .k url [lastfm user]\nfetches a lastfm link to user's now playing track\naliases: .k url, .k link, .kl, .ku, .kurl"
+                .to_owned(),
+            Some("spot" | "spotify") =>
+            	"usage: .k spotify [lastfm user]\nsearches spotify for the user's now playing track and returns a link to that track\naliases: .k <spot|spotify>, .kx, .kspot"
+                .to_owned(),
+            Some("search") =>
+            	"usage: .k search <search query>\nsearches spotify with an arbitrary query and returns the first result\naliases: .k search, .ks".to_owned(),
+            Some(cmd) => format!("unknown command: {cmd}"),
+        }
+    ))
+}
+
 async fn set(ctx: &Context, arg: &str, id: UserId) -> Reply {
-	set_lastfm_username(ctx, id, arg.to_string()).await;
-	Reply::Text(format!("set user {}", arg))
+    set_lastfm_username(ctx, id, arg.to_owned()).await;
+    Reply::Text(format!("set user {arg}"))
+}
+
+async fn search(ctx: &Context, arg: &str) -> Reply {
+    let mut data = ctx.data.write().await;
+	let spotify_option = data.get_mut::<SpotifyHaver>().expect("Failed to have spotify option");
+	if spotify_option.is_none() {
+		return Reply::Text("Unable to use Spotify commands: Contact bot Administrator.".to_owned())
+	}
+	let spotify_arc_mutex = spotify_option.as_mut().unwrap();
+	let spotify_client = spotify_arc_mutex.lock().await;
+	spotify_client.request_token().await.unwrap();
+	let search = spotify_client.search(arg, SearchType::Track, None, None, None, None).await;
+	let tracks = match search {
+		Ok(SearchResult::Tracks(track_page)) => track_page,
+		Err(e) => return Reply::Text(format!("Failed to get track {e}")),
+		_ => return Reply::Text("Spotify search failed".to_owned()),
+	};
+	match &tracks.items.first().map(|x| x.external_urls.get("spotify")) {
+		Some(Some(url)) => Reply::Text(url.to_owned().to_owned()),
+		_ => Reply::Text("Unable to get spotify url".to_owned()),
+	}	
+}
+
+macro_rules! cmd_pattern {
+	($long_cmd:pat, $short_pattern:pat, $arg_name:pat) => {
+		(Some(".k"), Some($long_cmd), $arg_name) | (Some(".k"), $arg_name, Some($long_cmd)) | (Some($short_pattern), $arg_name, None)
+	}
 }
 
 #[async_trait]
 impl EventHandler for Handler {
     async fn message(&self, ctx: Context, msg: Message) {
         let mut cmd_iter = msg.content.split(" ");
-        let cmd = cmd_iter.next().unwrap_or("");
-        let arg = cmd_iter.next().unwrap_or("");
-        let resp = match cmd {
-            ".fmi" => Some(fmi(&ctx, arg, msg.author.id).await),
-            ".set" => Some(set(&ctx, arg, msg.author.id).await),
+        let cmd = cmd_iter.next();
+        let arg1 = cmd_iter.next();
+        let arg2 = cmd_iter.next();
+        let resp = match (cmd, arg1, arg2) {
+            (Some(".k"), Some("help" | "h" | "?"), arg) // skip the ".k <command> help" syntax
+            | (Some(".kh") | Some(".k?"), arg, None) => {
+                log!("{} received", msg.content);
+                Some(help(arg))
+            }
+        	cmd_pattern!("set", ".kset" | ".set", Some(arg)) =>
+            /*(".set", arg, "") | (".k", "set", arg) | (".kset", arg, "") =>*/ {
+                log!("{} received", msg.content);
+                Some(set(&ctx, arg, msg.author.id).await)
+            },
+        	cmd_pattern!("art", ".ka" | ".kart", arg) =>
+            /*(".k", "art", arg) | (".k", arg, "art") | (".ka" | ".kart", arg, "") =>*/ {
+                log!("{} received", msg.content);
+                Some(art(&ctx, arg, msg.author.id).await)
+            },
+        	cmd_pattern!("url" | "uri" | "link", ".ku" | ".kl", arg) =>
+            /*(".k", "url" | "uri" | "link", arg)
+            | (".k", arg, "url" | "uri" | "link")
+            | (".ku" | ".kl" | ".kurl", arg, "") =>*/ {
+                log!("{} received", msg.content);
+                Some(url(&ctx, arg, msg.author.id).await)
+            },
+        	cmd_pattern!("text", ".kt", arg) =>
+            /*(".k", "url" | "uri" | "link", arg)
+            | (".k", arg, "url" | "uri" | "link")
+            | (".ku" | ".kl" | ".kurl", arg, "") =>*/ {
+                log!("{} received", msg.content);
+                Some(text(&ctx, arg, msg.author.id).await)
+            },
+        	cmd_pattern!("spot" | "spotify", ".kx", arg) =>
+            /*(".k", "spot" | "spotify", arg)
+            | (".k", arg, "spot" | "spotify")
+            | (".ks" | ".kspot", arg, "") =>*/ {
+                log!("{} received", msg.content);
+                Some(spot(&ctx, arg, msg.author.id).await)
+            },
+        	(Some(".ks"), Some(_), _) => {
+                log!("{} received", msg.content);
+        		Some(search(&ctx, &msg.content[4..]).await)
+        	},
+        	(Some(".k"), Some("search"), Some(_)) => {
+                log!("{} received", msg.content);
+        		Some(search(&ctx, &msg.content[10..]).await)
+        	},
+        	cmd_pattern!("fm" | "fmi" | "get" | "img", ".fmi" | ".k" | ".kf" | ".ki" | ".kfmi", arg) =>
+            /*(".fmi" | ".k" | ".kf" | ".ki" | ".kfmi", arg, "")
+            | (".k", "fm" | "fmi" | "get" | "img", arg) =>*/ {
+                log!("{} received", msg.content);
+                Some(fmi(&ctx, arg, msg.author.id, msg.author.avatar_url()).await)
+            }
             _ => None,
         };
         if let Some(reply) = resp {
@@ -190,20 +644,53 @@ impl EventHandler for Handler {
     }
 }
 
-struct PoolContainer;
+struct HttpHaver;
+impl TypeMapKey for HttpHaver {
+    type Value = reqwest_middleware::ClientWithMiddleware;
+}
 
-impl TypeMapKey for PoolContainer {
+struct PoolHaver;
+impl TypeMapKey for PoolHaver {
     type Value = SqlitePool;
 }
 
+struct FontsHaver;
+impl TypeMapKey for FontsHaver {
+    type Value = (SuperFont<'static>, SuperFont<'static>);
+}
+
+struct SpotifyHaver;
+impl TypeMapKey for SpotifyHaver {
+    type Value = Option<Arc<Mutex<ClientCredsSpotify>>>;
+}
+
+struct ColorCache {
+	map: Arc<Mutex<HashMap<String, (String, String)>>>,
+	max: usize,
+}
+struct ColorsHaver;
+impl TypeMapKey for ColorsHaver {
+	type Value = ColorCache;
+}
+
+struct Overrides {
+	map: Arc<Mutex<HashMap<String, String>>>,
+	last_modified: Option<SystemTime>,
+}
+struct OverridesHaver;
+impl TypeMapKey for OverridesHaver {
+	type Value = Overrides;
+}
+
 struct DBResponse {
     lastfm_username: String,
 }
 
 async fn get_lastfm_username(ctx: &Context, id: UserId) -> Option<String> {
+    log!("get db user {}", id);
     let data = ctx.data.write().await;
     let pool = data
-        .get::<PoolContainer>()
+        .get::<PoolHaver>()
         .expect("Failed to get pool container");
     let id = i64::from(id);
     let resp = sqlx::query_as!(
@@ -218,15 +705,19 @@ async fn get_lastfm_username(ctx: &Context, id: UserId) -> Option<String> {
     .fetch_one(pool)
     .await;
     match resp {
-        Ok(r) => Some(r.lastfm_username),
+        Ok(r) => {
+            log!("got user {}", r.lastfm_username);
+            Some(r.lastfm_username)
+        }
         Err(_) => None,
     }
 }
 
 async fn set_lastfm_username(ctx: &Context, id: UserId, user: String) {
-    let data = ctx.data.write().await;
+    log!("set db user {} {}", id, user);
+    let data = ctx.data.read().await;
     let pool = data
-        .get::<PoolContainer>()
+        .get::<PoolHaver>()
         .expect("Failed to get pool container");
     let id = i64::from(id);
     sqlx::query!(
@@ -234,10 +725,29 @@ async fn set_lastfm_username(ctx: &Context, id: UserId, user: String) {
 			INSERT INTO users
 			VALUES (?1, ?2)
 		"#,
-        id, user
+        id,
+        user
     )
     .execute(pool)
-    .await.expect("Failed to insert");
+    .await
+    .expect("Failed to insert");
+}
+
+async fn get_image(ctx: &Context, url: &str) -> Result<Vec<u8>, reqwest_middleware::Error> {
+	log!("get {}", url);
+    let data = ctx.data.read().await;
+    let http = data.get::<HttpHaver>().expect("Failed to get http client");
+    match http.get(url).send().await {
+        Ok(resp) => {
+            log!("response received");
+            Ok(resp
+                .bytes()
+                .await
+                .expect("Unable to resolve bytes")
+                .to_vec())
+        }
+        Err(e) => Err(e),
+    }
 }
 
 #[tokio::main]
@@ -258,19 +768,79 @@ async fn main() {
         | GatewayIntents::DIRECT_MESSAGES
         | GatewayIntents::MESSAGE_CONTENT;
 
-    let mut client = Client::builder(&token, intents)
+    let http = reqwest_middleware::ClientBuilder::new(reqwest::Client::new())
+        .with(Cache(HttpCache {
+            mode: CacheMode::Default,
+            manager: CACacheManager::default(),
+            options: HttpCacheOptions::default(),
+        }))
+        .build();
+
+    FontDB::load_from_dir("fonts"); //singlet instance??? wha?????
+    let regular_fonts = FontDB::query(
+        "
+    	NotoSans-Regular
+    	NotoSansHK-Regular
+    	NotoSansJP-Regular
+    	NotoSansKR-Regular
+    	NotoSansSC-Regular
+    	NotoSansTC-Regular
+    	NotoSansArabic-Regular
+    	Heebo-Regular
+    	NotoEmoji-Regular
+    	Symbola
+    	Unifont
+    ",
+    )
+    .expect("Failed to load regular fonts");
+    let bold_fonts = FontDB::query(
+        "
+    	NotoSans-SemiBold
+    	NotoSansJP-Medium
+    	NotoSansKR-Medium
+    	NotoSansSC-Medium
+    	NotoSansTC-Medium
+    	NotoSansArabic-SemiBold
+    	Heebo-SemiBold
+    	NotoEmoji-Medium
+    	Symbola
+    	Unifont
+    ",
+    )
+    .expect("Failed to load bold fonts");
+
+    let spotify_creds = Credentials::from_env();
+    let spotify = spotify_creds.map(ClientCredsSpotify::new);
+    if let Some(spotify_client) = &spotify {
+        let _ = &spotify_client.request_token().await.unwrap();
+    }
+
+    let colors_cache = ColorCache {
+    	map: Arc::new(Mutex::new(HashMap::new())),
+    	max: env::var("MAX_CACHE_SIZE").unwrap_or("".to_owned()).parse::<usize>().unwrap_or(1000000),
+	};
+
+	let overrides = Overrides {
+		map: Arc::new(Mutex::new(HashMap::new())),
+		last_modified: None,
+	};
+
+    let mut discord_client = Client::builder(&token, intents)
         .event_handler(Handler)
         .await
-        .expect("Err creating client");
+        .expect("Err creating Discord client");
 
     {
-        let mut data = client.data.write().await;
-        data.insert::<PoolContainer>(pool);
+        let mut data = discord_client.data.write().await;
+        data.insert::<PoolHaver>(pool);
+        data.insert::<HttpHaver>(http);
+        data.insert::<FontsHaver>((regular_fonts, bold_fonts));
+        data.insert::<SpotifyHaver>(spotify.map(Mutex::new).map(Arc::new));
+        data.insert::<ColorsHaver>(colors_cache);
+        data.insert::<OverridesHaver>(overrides);
     }
 
-    if let Err(why) = client.start().await {
+    if let Err(why) = discord_client.start().await {
         println!("Client error: {why:?}");
-    } else {
-        println!("watcat started");
     }
 }

src/text.rs

@@ -0,0 +1,156 @@
+// this code is mostly just blindly ported from
+// https://github.com/adamanldo/Cosmo/blob/946af25dcac8a81cb7b49d1a4f83731a5f7c7b46/cogs/utils/fmi_text.py
+// since I'm using the same text rendering library, my code is almost one-to-one
+
+use arabic_reshaper::arabic_reshape;
+use image::codecs::png::PngEncoder;
+use image::{ExtendedColorType, ImageEncoder, RgbaImage};
+use imagetext::measure::text_width;
+use imagetext::prelude::{BLACK, Outline, TextAlign, WHITE, draw_text_wrapped, scale, stroke};
+use imagetext::superfont::SuperFont;
+use imagetext::wrap::{WrapStyle, text_wrap};
+use unicode_bidi::BidiInfo;
+
+enum TextField {
+    Title,
+    Artist,
+    Album,
+}
+
+fn process_text(
+    text: &str,
+    field: &TextField,
+    font: &SuperFont<'static>,
+    font_size: f32,
+) -> (Vec<String>, i32) {
+    let mut text = text.to_string();
+    if text
+        .chars()
+        .any(|x| matches!(x as u32, 0x590..=0x5fe | 0x600..=0x6ff0))
+    {
+        if text.chars().any(|x| matches!(x as u32, 0x600..=0x6ff0)) {
+            text = arabic_reshape(text.as_str());
+        }
+        let bidi = BidiInfo::new(text.as_str(), None);
+        text = bidi
+            .paragraphs
+            .iter()
+            .map(|para| {
+                let line = para.range.clone();
+                bidi.reorder_line(para, line)
+            })
+            .collect();
+    }
+    let (width, allowed_lines) = match field {
+        TextField::Title => (350, 2),
+        TextField::Artist => (312, 1),
+        TextField::Album => (280, 2),
+    };
+    let mut wrapped_strs = text_wrap(
+        text.as_str(),
+        width,
+        font,
+        scale(font_size),
+        WrapStyle::Character,
+        text_width,
+    );
+    if wrapped_strs.len() > allowed_lines {
+        wrapped_strs.truncate(allowed_lines);
+        let text_len = wrapped_strs[allowed_lines - 1].len() - 3;
+        wrapped_strs[allowed_lines - 1] = match allowed_lines {
+            1..=2 => format!(
+                "{}...",
+                wrapped_strs[allowed_lines - 1].get(..text_len).unwrap()
+            ),
+            _ => unreachable!(),
+        };
+    }
+    (wrapped_strs, width)
+}
+
+fn draw_info(
+    image: &mut RgbaImage,
+    text: String,
+    text_type: TextField,
+    font: &SuperFont<'static>,
+    font_size: f32,
+    dark_text: bool,
+) -> Result<(), String> {
+    let (lines, width) = process_text(&text, &text_type, font, font_size);
+    let text = lines.join("");
+    let y = match text_type {
+        TextField::Title => 24.0,
+        TextField::Artist => 73.0,
+        TextField::Album => 96.0,
+    };
+    let color = if dark_text { &BLACK } else { &WHITE };
+    match draw_text_wrapped(
+        image,
+        color,
+        Outline::Solid {
+            stroke: &stroke(0.5),
+            fill: color,
+        },
+        146.0,
+        y,
+        0.0,
+        0.0,
+        width as f32,
+        scale(font_size),
+        font,
+        &text,
+        1.0,
+        TextAlign::Left,
+        WrapStyle::Character,
+    ) {
+        Ok(_) => Ok(()),
+        Err(e) => Err(e.to_string()),
+    }
+}
+
+pub struct TrackInfo {
+    pub title: String,
+    pub artist: String,
+    pub album: String,
+}
+
+pub fn fmi_text(
+    width: u32,
+    height: u32,
+    track: TrackInfo,
+    fonts: &(SuperFont<'static>, SuperFont<'static>),
+    font_size: f32,
+    dark_text: bool,
+) -> Result<Vec<u8>, String> {
+    let mut img = RgbaImage::new(width, height);
+    draw_info(
+        &mut img,
+        track.title,
+        TextField::Title,
+        &fonts.1.clone(),
+        font_size,
+        dark_text,
+    )?;
+    draw_info(
+        &mut img,
+        track.artist,
+        TextField::Artist,
+        &fonts.0.clone(),
+        font_size,
+        dark_text,
+    )?;
+    draw_info(
+        &mut img,
+        track.album,
+        TextField::Album,
+        &fonts.0.clone(),
+        font_size,
+        dark_text,
+    )?;
+    let mut blob = Vec::<u8>::new();
+    let png_encoder = PngEncoder::new(&mut blob);
+    match png_encoder.write_image(&img, width, height, ExtendedColorType::Rgba8) {
+        Ok(()) => Ok(blob),
+        Err(_) => Err("Failed to encode text png".to_string()),
+    }
+}