MVP achieved.

Cargo.lock

@@ -80,6 +80,7 @@ dependencies = [
  "js-sys",
  "num-integer",
  "num-traits",
+ "serde",
  "time",
  "wasm-bindgen",
  "winapi",
@@ -372,6 +373,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
 [[package]]
 name = "libc"
 version = "0.2.139"
@@ -420,6 +427,7 @@ dependencies = [
  "clap",
  "dirs",
  "html-escape",
+ "lazy_static",
  "owo-colors",
  "serde",
  "serde_json",

Cargo.toml

@@ -5,12 +5,20 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[profile.release]
+strip = true
+opt-level = "z"
+lto = true
+codegen-units = 1
+panic = "abort"
+
 [dependencies]
 anyhow = "1.0.68"
-chrono = "0.4.23"
+chrono = { version = "0.4.23", features = ["serde"] }
 clap = { version = "4.1.2", features = ["derive"] }
 dirs = "4.0.0"
 html-escape = "0.2.13"
+lazy_static = "1.4.0"
 owo-colors = { version = "3.5.0", features = ["supports-colors"] }
 serde = { version = "1.0.152", features = ["derive"] }
 serde_json = "1.0.91"

src/main.rs

@@ -1,8 +1,22 @@
-use std::string::ToString;
+use owo_colors::{AnsiColors, OwoColorize, Stream::Stdout};
+use serde::{Deserialize, Serialize};
+use std::{path::PathBuf, io::Write};
 
+use dirs;
+
+use chrono::{serde::ts_seconds, Datelike, Utc};
 use clap::{Parser, ValueEnum};
-use chrono::Datelike;
+use lazy_static::lazy_static;
 
+macro_rules! cond {
+    ($cond:expr => $true:expr; $false:expr) => {
+        if $cond {
+            $true
+        } else {
+            $false
+        }
+    };
+}
 
 #[derive(Parser, Debug)]
 #[command(author, version, about, long_about = None)]
@@ -17,9 +31,11 @@ struct Cli {
 
     /// Colorise output. No effect when --json is set.
     #[arg(short, long, default_value_t = ColoriseOutput::Auto)]
-    pub color: ColoriseOutput
+    pub color: ColoriseOutput,
-
 
+    /// Output today only. Incompatible with --color
+    #[arg(short, long)]
+    pub today: bool,
 }
 
 #[derive(strum::Display, Debug, ValueEnum, Clone, Copy)]
@@ -30,26 +46,161 @@ pub enum ColoriseOutput {
     False,
 }
 
-fn main() -> anyhow::Result<()>{
+const MENU_URL: &'static str =
-    let _args = Cli::parse();
+    "http://kantinemeny.azurewebsites.net/ukesmeny?lokasjon=toro@albatross-as.no&dato=";
+const SOUP_URL: &'static str =
+    "http://kantinemeny.azurewebsites.net/ukesmenysuppe?lokasjon=toro@albatross-as.no&dato=";
 
-    let resp = ureq::get("http://kantinemeny.azurewebsites.net/ukesmeny?lokasjon=toro@albatross-as.no&dato=")
+fn main() -> anyhow::Result<()> {
-        .call()?;
+    let args = Cli::parse();
 
-    let body = resp.into_string()?;
+    let now = chrono::offset::Utc::now();
+    let weekday_offset = now
+        .weekday()
+        .num_days_from_monday();
     
-    let items = body.html_string_to_vec()?;
+    let cache = match get_cached_data() {
+        Ok(data) => {
+            if (now - data.timestamp).num_minutes() > 60 {
+                let data = CachedData {
+                    timestamp: now.clone(),
+                    items: ureq::get(MENU_URL).call()?
+                        .into_string()?
+                        .html_string_to_vec()?,
+                    soup_items: ureq::get(SOUP_URL).call()?
+                        .into_string()?
+                        .html_string_to_vec()?,
+                };
                 
-    for item in items {
+                set_cached_data(&data)?;
-        println!("{} - {}", item.title.unwrap_or("".to_string()), item.additional.unwrap_or("".to_string()));
+                data
+            } else {
+                data
+            }
+        },
+        Err(_) => {
+            let data = CachedData {
+                timestamp: now.clone(),
+                items: ureq::get(MENU_URL).call()?
+                    .into_string()?
+                    .html_string_to_vec()?,
+                soup_items: ureq::get(SOUP_URL).call()?
+                    .into_string()?
+                    .html_string_to_vec()?,
+            };
+            set_cached_data(&data)?;
+            data
+        }
+    };
+
+    let items = cond!(args.soup => cache.soup_items; cache.items);
+
+    match args.color {
+        ColoriseOutput::True => {
+            std::env::set_var("FORCE_COLOR", "true");
+        }
+        ColoriseOutput::False => {
+            std::env::set_var("NO_COLOR", "false");
+        }
+        _ => {}
+    };
+
+    if args.today {
+        if weekday_offset as usize >= (&items).len() {
+            return Ok(())
+        }
+        
+        let item = &items[weekday_offset as usize];
+        
+        let title: String = match item.title.clone() {
+            Some(t) => t,
+            None => String::new(),
+        };
+        
+        let additional = item.additional.clone().unwrap_or_default();
+        
+        let mut final_s = String::new();
+        final_s.push_str(&title);
+        if !additional.is_empty() {
+            let f = format!(" - {}", additional);
+            final_s.push_str(&f);
+        }
+        
+        println!("{}", final_s);
+        
+        return Ok(())
     }
     
-    let now = chrono::offset::Local::now();
+    if args.json {
-    println!("{}", now.date_naive().weekday().number_from_monday());
+        let json =serde_json::to_string_pretty(&items)?;
+        println!("{}", json);
+        
+        return Ok(())
+    }
+    
+    display_week(items, weekday_offset);
 
     Ok(())
 }
 
+fn get_cached_data() -> anyhow::Result<CachedData> {
+    let mut cache = dirs::cache_dir().unwrap_or(PathBuf::from("."));
+    cache.push("n58-kantine");
+    cache.push("data.json");
+    
+    let s = std::fs::read_to_string(cache)?;
+    let cached_data: CachedData = serde_json::from_str(&s)?;
+    
+    Ok(cached_data)
+}
+
+fn set_cached_data(data: &CachedData) -> anyhow::Result<()> {
+    let mut cache = dirs::cache_dir().unwrap_or(PathBuf::from("."));
+    cache.push("n58-kantine");
+    let dir = cache.clone();
+    cache.push("data.json");
+       
+    let json = serde_json::to_string_pretty(data)?;
+    
+    std::fs::create_dir_all(dir)?;
+    
+    let mut f = std::fs::File::create(cache)?;
+    f.write_all(json.as_bytes())?;
+    
+    
+    Ok(())
+}
+
+lazy_static! {
+    static ref WEEKDAYS: Vec<&'static str> =
+        vec!["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"];
+}
+
+fn display_week(items: Vec<MenuItem>, day: u32) {
+    for (i, item) in items.into_iter().enumerate() {
+        if i >= WEEKDAYS.len() {
+            break;
+        };
+
+        let is_today = day == (i as u32);
+
+        println!(
+            "{day}\n  {title}\n  {additional}",
+            day = format!(
+                "{}{}{}",
+                "[".if_supports_color(Stdout, |s| s.color(cond!(is_today => AnsiColors::BrightWhite; AnsiColors::BrightBlack))),
+                WEEKDAYS[i].if_supports_color(Stdout, |s| s.color(AnsiColors::Green)),
+                "]".if_supports_color(Stdout, |s| s.color(cond!(is_today => AnsiColors::BrightWhite; AnsiColors::BrightBlack))),
+            ),
+            title = item.title.unwrap_or("".to_owned()),
+            additional = match item.additional {
+                Some(text) => format!("{}\n", text),
+                None => format!(""),
+            },
+        );
+    }
+}
+
 trait DeocdeHTMLEnts {
     fn decode_html_ents(&self) -> Self;
 }
@@ -68,25 +219,25 @@ trait HTMLStringToVec {
 
 fn get_item(p: &tl::Parser, tag: &tl::HTMLTag) -> Option<String> {
     Some(
-        tag
+        tag.query_selector(p, ".dagsrett")?
-            .query_selector(p, ".dagsrett")?
             .last()?
             .get(p)?
             .as_tag()?
-            .inner_text(p).to_string()
+            .inner_text(p)
-            .decode_html_ents()
+            .to_string()
+            .decode_html_ents(),
     )
-
 }
 
 fn get_item_additional(p: &tl::Parser, tag: &tl::HTMLTag) -> Option<String> {
     Some(
-        tag
+        tag.query_selector(p, ".dagsrettgarnityr")?
-            .query_selector(p, ".dagsrettgarnityr")?
             .last()?
             .get(p)?
-            .as_tag()?.inner_text(p).to_string()
+            .as_tag()?
-            .decode_html_ents()
+            .inner_text(p)
+            .to_string()
+            .decode_html_ents(),
     )
 }
 
@@ -95,26 +246,41 @@ impl HTMLStringToVec for String {
         let dom = tl::parse(self, tl::ParserOptions::default())?;
         let p = dom.parser();
 
-        let nodes: Vec<&tl::Node> = Vec::from_iter(dom.query_selector(".dagsinfo").unwrap().filter_map(|x| x.get(p)));
+        let nodes: Vec<&tl::Node> = Vec::from_iter(
+            dom.query_selector(".dagsinfo")
+                .unwrap()
+                .filter_map(|x| x.get(p)),
+        );
 
-        let items = nodes.into_iter().map(|i| {
+        let items = nodes
-            let tag = i.as_tag().unwrap();
+            .into_iter()
-            let text = get_item(p, tag);
+            .map(|i| {
+                let tag = i.as_tag().unwrap();
+                let title = get_item(p, tag);
 
-            let additional = get_item_additional(p, tag);
+                let additional = get_item_additional(p, tag);
 
-            MenuItem {
+                MenuItem {
-                title: text,
+                    title,
-                additional: additional,
+                    additional,
-            }
+                }
-        }).collect::<Vec<MenuItem>>();
+            })
+            .collect::<Vec<MenuItem>>();
 
         Ok(items)
     }
 }
 
-#[derive(Debug)]
+#[derive(Debug, Serialize, Deserialize)]
 struct MenuItem {
     pub title: Option<String>,
     pub additional: Option<String>,
 }
+
+#[derive(Debug, Serialize, Deserialize)]
+struct CachedData {
+    #[serde(with = "ts_seconds")]
+    pub timestamp: chrono::DateTime<Utc>,
+    pub items: Vec<MenuItem>,
+    pub soup_items: Vec<MenuItem>,
+}