Polish and publish sigweb

README.md

@@ -4,6 +4,8 @@ Consisting of a Rust library for generating song ideas `libsig`,
 a command line tool for calling `libsig`,
 and a web interface with a JSON API for getting structured results from `libsig`.
 
+![an example of sigweb in use](sigweb.png)
+
 ## Usage
 
 The primary type of `libsig` is the `SongIdea`. You can generate human-readable representations with `Display` (so, `println!("{}", my_song_idea)`).
@@ -19,4 +21,8 @@ buzzy pad, glassy vocals, plonky kick, plucky snare, and dry tom at 63 bpm, with
 surfy lead, blownout pad, light vocals, acidic snare, sonorous hat, and digital tom at 33 bpm, with no swing, through lofi
 ```
 
-It also takes a parameter `--ambient` to avoid suggesting percussion parts.
+It also takes a parameter `--ambient` to avoid suggesting percussion parts.
+
+`sigweb` is a very basic Rocket app. I suggest building it with `x86_64-unknown-linux-musl`. Once built take the `sigweb` binary and put it in a folder with an appropriate `Rocket.toml`. You can set a base URL with the environment variable `SIGWEB_BASE_URL`. See the provided `sigweb.service` for a sample SystemD unit.
+
+It provides a JSON API with the endpoints `/api/v1/{generate, generate_ambient}`.

sigweb/sigweb.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Song Idea Generator Web Service
+
+[Service]
+Type=simple
+User=nora
+WorkingDirectory=/home/nora/sigweb
+ExecStart=/home/nora/sigweb/sigweb
+Environment=SIGWEB_BASE_URL="https://nora.codes/sigweb/"
+
+[Install]
+WantedBy=multi-user.target

sigweb/src/main.rs

@@ -1,13 +1,17 @@
 #[macro_use]
 extern crate rocket;
 use libsig;
-use rocket::fs::NamedFile;
 use rocket::response::content::{Css, Html};
 use rocket::serde::json::Json;
+use rocket::State;
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
 mod templates;
 
+struct BaseUrl {
+    url: String,
+}
+
 #[get("/api")]
 fn api_version_available() -> Json<Value> {
     Json(json! ({
@@ -47,42 +51,46 @@ fn api_v1_generate_ambient() -> Json<Output> {
 }
 
 #[get("/")]
-fn index() -> Html<String> {
-    Html(templates::main_page_template(None))
+fn index(base: &State<BaseUrl>) -> Html<String> {
+    Html(templates::main_page_template(None, &base.url))
 }
 
 #[get("/generate")]
-fn generate() -> Html<String> {
+fn generate(base: &State<BaseUrl>) -> Html<String> {
     Html(templates::main_page_template(Some(
         libsig::SongIdea::generate(),
-    )))
+    ), &base.url))
 }
 
 #[get("/generate_ambient")]
-fn generate_ambient() -> Html<String> {
+fn generate_ambient(base: &State<BaseUrl>) -> Html<String> {
     Html(templates::main_page_template(Some(
         libsig::SongIdea::generate_ambient(),
-    )))
+    ), &base.url))
 }
 
 #[get("/style.css")]
-async fn style_css() -> Css<Option<NamedFile>> {
-    Css(NamedFile::open("static/style.css").await.ok())
+async fn style_css() -> Css<String> {
+    Css(include_str!("../static/style.css").into())
 }
 
 #[launch]
 fn rocket() -> _ {
-    rocket::build().mount(
-        "/",
-        routes![
-            api_version_available,
-            api_v1_index,
-            api_v1_generate,
-            api_v1_generate_ambient,
-            generate,
-            generate_ambient,
-            index,
-            style_css,
-        ],
-    )
+    rocket::build()
+        .manage(BaseUrl {
+            url: std::env::var("SIGWEB_BASE_URL").unwrap_or("/".to_string()),
+        })
+        .mount(
+            "/",
+            routes![
+                api_version_available,
+                api_v1_index,
+                api_v1_generate,
+                api_v1_generate_ambient,
+                generate,
+                generate_ambient,
+                index,
+                style_css,
+            ],
+        )
 }

sigweb/src/templates.rs

@@ -1,22 +1,22 @@
 use maud::{html, DOCTYPE};
 use libsig::SongIdea;
 
-pub fn main_page_template(idea: Option<SongIdea>) -> String {
-    let content = match idea {
-        Some(idea) => { idea.to_string() },
-        None => { "Generate a new idea with the links below!".to_string() }
-    };
+pub fn main_page_template(idea: Option<SongIdea>, base_url: &str) -> String {
     let html = html! {
         (DOCTYPE)
         head {
             link rel="stylesheet" href="style.css";
+            base href=(base_url);
         }
         body {
-            h1 { "Song Idea Generator" }
-            p{ "Why don't you make a song like this: " }
-            p.content {
-                (content)
-            }
+            h1 { "Song Idea Generator" } 
+            (match idea {
+                Some(idea) => html!{ 
+                    p { "Why don't you make a song like this: " }
+                    p.content { (idea) }
+                },
+                None => html! { p { "Generate a new idea with the links below!" } p.content {} }
+            })
             footer {
                 p {
                     a href="./generate" { "generate new" }