use 'icalendar' crate (standard is too complex to implement myself)

Cargo.lock

@@ -386,11 +386,25 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "icalendar"
+version = "0.17.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0aece6c6edc66265bb0e797dbc9893d63115e448433505f3f685c02a43d0111"
+dependencies = [
+ "chrono",
+ "iso8601",
+ "nom",
+ "nom-language",
+ "uuid",
+]
+
 [[package]]
 name = "icomidal"
 version = "0.1.0"
 dependencies = [
  "chrono",
+ "icalendar",
  "reqwest",
  "serde",
 ]
@@ -529,6 +543,15 @@ version = "2.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "469fb0b9cefa57e3ef31275ee7cacb78f2fdca44e4765491884a2b119d4eb130"
 
+[[package]]
+name = "iso8601"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1082f0c48f143442a1ac6122f67e360ceee130b967af4d50996e5154a45df46"
+dependencies = [
+ "nom",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.15"
@@ -618,6 +641,24 @@ dependencies = [
  "tempfile",
 ]
 
+[[package]]
+name = "nom"
+version = "8.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df9761775871bdef83bee530e60050f7e54b1105350d6884eb0fb4f46c2f9405"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "nom-language"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2de2bc5b451bfedaef92c90b8939a8fff5770bdcc1fafd6239d086aab8fa6b29"
+dependencies = [
+ "nom",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -1121,6 +1162,17 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "uuid"
+version = "1.18.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f87b8aa10b915a06587d0dec516c282ff295b475d94abf425d62b57710070a2"
+dependencies = [
+ "getrandom",
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"

Cargo.toml

@@ -7,3 +7,4 @@ edition = "2024"
 reqwest = { version = "0.11", features = ["blocking", "json"] }
 serde = { version = "1.0", features = ["derive"] }
 chrono = "0.4"
+icalendar = "0.17.3"

README.md

@@ -10,6 +10,7 @@ Hardcoded features:
     - soup
  - menu items are in Dutch
  - calendar items match the opening hours of Komida (11:30 - 13:45)
+ - prints iCalendar output to stdout
 
 The output of this program (updated daily) is available as-a-service at:
 

src/main.rs

@@ -1,5 +1,7 @@
 use reqwest::blocking::get;
 use serde::Deserialize;
+use icalendar::Component;
+use icalendar::EventLike;
 
 const location_id: &str = "8199"; // Middelheim?
 const customer_id: &str = "7622"; // Me?
@@ -23,7 +25,9 @@ struct Response {
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let now = chrono::Local::now();
 
-    println!("BEGIN:VCALENDAR");
+    let mut calendar = icalendar::Calendar::new();
+
+    calendar.name("Komida Menu");
 
     for days_in_future in 0..14 {
         let date = now + chrono::Days::new(days_in_future);
@@ -46,22 +50,17 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
             if item.SectionName.contains("Streetfood")
              || item.SectionName.contains("Dailyfood")
              || item.SectionName.contains("Soep") {
-                // let d = NaiveDate::parse_from_str(&e.date, "%Y-%m-%d")?;
+                calendar.push(
-                println!("BEGIN:VEVENT");
+                    icalendar::Event::new()
-                println!("SUMMARY:{}", item.MenuName);
+                        .summary(item.MenuName.as_str())
-                println!("DTSTART:{}T{}Z",
+                        .starts(lunch_starts_at)
-                    lunch_starts_at.format("%Y%m%d"),
+                        .ends(lunch_ends_at)
-                    lunch_starts_at.format("%H%M%S"),
                 );
-                println!("DTEND:{}T{}Z",
-                    lunch_ends_at.format("%Y%m%d"),
-                    lunch_ends_at.format("%H%M%S"),
-                );
-                println!("END:VEVENT");
             }
         }
     }
 
-    println!("END:VCALENDAR");
+    println!("{}", calendar);
+
     Ok(())
 }