Added "TODO" to README

.gitignore

@@ -1,3 +1,4 @@
 /target
 /.env
 /watcat.db*
+/http-cacache

Cargo.toml

@@ -6,13 +6,15 @@ 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"
 
 [dependencies.magick_rust]
 path = "./magick-rust"
 
-[dependencies.dotenvy]
-version = "0.15.7"
-
 [dependencies.tokio]
 version = "1.21.2"
 features = ["macros", "rt-multi-thread"]

README.md

@@ -24,3 +24,8 @@ create the database ``sqlx database create``
 (note: make sure you have sqlx installed first)
 
 init the database ``sqlx migrate run``
+
+TODO
+----
+
+literally just add the text

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};
@@ -13,6 +16,10 @@ use magick_rust::{ColorspaceType, CompositeOperator, MagickWand, PixelWand, magi
 use std::env;
 use std::sync::Once;
 
+use palette::color_difference::ImprovedCiede2000;
+use palette::lab::Lab;
+use palette::white_point::D65;
+
 extern crate sqlx;
 use sqlx::sqlite::SqlitePool;
 
@@ -25,10 +32,35 @@ 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_string()) == "1" {
+			println!(concat!("debug: {} ", $a), now!())
+		}
+	};
+
+	($a:expr, $($b:expr),+) => {
+		if env::var("DEBUG").unwrap_or("0".to_string()) == "1" {
+			println!(concat!("debug: {} ", $a), now!(), $($b),+)
+		}
+	};
+}
+
 macro_rules! handle_magick_result {
     ($a: expr, $b: literal) => {
         match $a {
-            Ok(_) => {}
+            Ok(_) => {
+                log!("{} run successfully", stringify!($a));
+            }
             Err(e) => return Reply::Text(format!("Error: {} {}", $b, e)),
         }
     };
@@ -43,17 +75,50 @@ macro_rules! handle_magick_option {
     };
 }
 
-#[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 fmi(ctx: &Context, arg: &str, id: UserId, avatar: Option<String>) -> Reply {
     let lastfm_user = match arg {
         "" => get_lastfm_username(ctx, id).await,
         _ => Some(arg.to_string()),
     };
-    let client = match lastfm_user {
-    	Some(s) => lastfm::Client::<String, String>::from_env(s),
-    	None => return Reply::Text("No last.fm username set.".to_string()),
+    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()),
     };
-    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}")),
     };
@@ -65,19 +130,24 @@ async fn fmi(ctx: &Context, arg: &str, id: UserId) -> Reply {
         Some(iu) => iu,
         None => return Reply::Text("Error: getting image uri failed".to_string()),
     };
+
+    let image = match get_image(ctx, image_uri.as_str()).await {
+        Ok(i) => i,
+        Err(e) => return Reply::Text(format!("{}", e)),
+    };
     let mut base_color = PixelWand::new();
     let mut white = PixelWand::new();
-    let mut main_wand = MagickWand::new();
-    let mut art_wand = MagickWand::new();
+    let main_wand = MagickWand::new();
+    let art_wand = MagickWand::new();
     let mut art_wand_cluster = MagickWand::new();
-    let mut mask_wand = MagickWand::new();
+    let mask_wand = MagickWand::new();
 
     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!(
@@ -100,7 +170,7 @@ async fn fmi(ctx: &Context, arg: &str, id: UserId) -> Reply {
         "Failed to set cluster colorspace"
     );
     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!(
@@ -108,16 +178,76 @@ 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],
-    };
-
-    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");
+    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_color = PixelWand::new();
     handle_magick_result!(
-        mask_wand.opaque_paint_image(&white, accent_color, 0.0, false),
-        "Failed to paint mask"
+        accent_color.set_color("#ffffff"),
+        "Failed to init accent color"
+    );
+    if let Some(color) = other_colors.first() {
+        let col = format!("cielab{:?}", color.into_components());
+        handle_magick_result!(
+            accent_color.set_color(col.as_str()),
+            "Failed to set accent color"
+        );
+    }
+
+    handle_magick_result!(white.set_color("#ffffff"), "Failed to init white");
+    handle_magick_result!(
+        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.adaptive_resize_image(64, 64),
+        "Failed to resize avatar"
+    );
+    handle_magick_result!(
+        avatar_wand.transform_image_colorspace(ColorspaceType::Lab),
+        "Failed to set avatar colorspace"
     );
 
     handle_magick_result!(
@@ -138,7 +268,11 @@ async fn fmi(ctx: &Context, arg: &str, id: UserId) -> Reply {
     );
     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"
     );
     handle_magick_result!(
         main_wand.compose_images(
@@ -148,18 +282,18 @@ 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(&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 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_string()).await;
+    Reply::Text(format!("set user {}", arg))
 }
 
 #[async_trait]
@@ -169,8 +303,14 @@ impl EventHandler for Handler {
         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),
+            ".fmi" => {
+                log!("{} received", msg.content);
+                Some(fmi(&ctx, arg, msg.author.id, msg.author.avatar_url()).await)
+            }
+            ".set" => {
+                log!("{} received", msg.content);
+                Some(set(&ctx, arg, msg.author.id).await)
+            }
             _ => None,
         };
         if let Some(reply) = resp {
@@ -190,8 +330,12 @@ impl EventHandler for Handler {
     }
 }
 
-struct PoolContainer;
+struct HttpContainer;
+impl TypeMapKey for HttpContainer {
+    type Value = reqwest_middleware::ClientWithMiddleware;
+}
 
+struct PoolContainer;
 impl TypeMapKey for PoolContainer {
     type Value = SqlitePool;
 }
@@ -201,6 +345,7 @@ struct DBResponse {
 }
 
 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>()
@@ -218,12 +363,16 @@ 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) {
+    log!("set db user {} {}", id, user);
     let data = ctx.data.write().await;
     let pool = data
         .get::<PoolContainer>()
@@ -234,10 +383,31 @@ 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.write().await;
+    let http = data
+        .get::<HttpContainer>()
+        .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 +428,24 @@ async fn main() {
         | GatewayIntents::DIRECT_MESSAGES
         | GatewayIntents::MESSAGE_CONTENT;
 
-    let mut client = Client::builder(&token, intents)
+    let mut discord_client = Client::builder(&token, intents)
         .event_handler(Handler)
         .await
-        .expect("Err creating client");
-
+        .expect("Err creating Discord client");
+    let http = reqwest_middleware::ClientBuilder::new(reqwest::Client::new())
+        .with(Cache(HttpCache {
+            mode: CacheMode::Default,
+            manager: CACacheManager::default(),
+            options: HttpCacheOptions::default(),
+        }))
+        .build();
     {
-        let mut data = client.data.write().await;
+        let mut data = discord_client.data.write().await;
         data.insert::<PoolContainer>(pool);
+        data.insert::<HttpContainer>(http);
     }
 
-    if let Err(why) = client.start().await {
+    if let Err(why) = discord_client.start().await {
         println!("Client error: {why:?}");
-    } else {
-        println!("watcat started");
     }
 }