add context to some errors

src/main.rs

@@ -58,11 +58,15 @@ struct Config {
 }
 
 impl Config {
-    fn downloads(&self) -> impl Iterator<Item = SimpleDownload> {
+    fn downloads(&self, now: DateTime<chrono_tz::Tz>) -> impl Iterator<Item = SimpleDownload> {
         self.campfires
             .iter()
             .map(|cf| cf.dl.clone())
-            .chain(self.common_ninjas.iter().map(|cn| cn.simple_download()))
+            .chain(
+                self.common_ninjas
+                    .iter()
+                    .map(move |cn| cn.simple_download(now)),
+            )
             .chain(self.icals.iter().map(|ical| ical.dl.clone()))
     }
 }
@@ -434,12 +438,14 @@ static APP_USER_AGENT: &str = concat!(
 async fn do_everything(cli: &CliAuto) -> Result<()> {
     let config = std::fs::read_to_string(&cli.config)?;
     let config: Config = toml::from_str(&config)?;
+    let tz = &config.output.timezone;
+    let now = Utc::now().with_timezone(tz);
 
     tracing::info!(?APP_USER_AGENT);
     let client = reqwest::Client::builder()
         .user_agent(APP_USER_AGENT)
         .build()?;
-    for dl in config.downloads() {
+    for dl in config.downloads(now) {
         let Some(download_url) = &dl.download_url else {
             continue;
         };
@@ -456,9 +462,6 @@ async fn do_everything(cli: &CliAuto) -> Result<()> {
     }
 
     let data = read_data_from_disk(&config)?;
-
-    let tz = &config.output.timezone;
-    let now = Utc::now().with_timezone(tz);
     let instances = process_data(&data, &config.output, now)?;
     output_html(&config.output, &instances, now)?;
     Ok(())
@@ -484,15 +487,15 @@ fn main_auto(cli: CliAuto) -> Result<()> {
 fn main_debug_output(cli: CliDebugOutput) -> Result<()> {
     tracing_subscriber::fmt::init();
     tracing::info!("Started tracing");
-    let config = std::fs::read_to_string(&cli.config)?;
-    let config: Config = toml::from_str(&config)?;
+    let config = std::fs::read_to_string(&cli.config).context("Failed to read config file")?;
+    let config: Config = toml::from_str(&config).context("Failed to parse config file")?;
 
-    let data = read_data_from_disk(&config)?;
+    let data = read_data_from_disk(&config).context("Failed to read data from disk")?;
 
     let tz = &config.output.timezone;
     let now = Utc::now().with_timezone(tz);
-    let instances = process_data(&data, &config.output, now)?;
-    output_html(&config.output, &instances, now)?;
+    let instances = process_data(&data, &config.output, now).context("Failed to process data")?;
+    output_html(&config.output, &instances, now).context("Failed to output HTML")?;
 
     Ok(())
 }

src/wac_common_ninja.rs

@@ -1,16 +1,17 @@
 use super::{CalendarUi, EventInstance, Parameters, SimpleDownload};
 use crate::prelude::*;
+use chrono::DateTime;
 
-#[derive(Clone, Default, Deserialize)]
+#[derive(Clone, Deserialize)]
 struct SillyDownloadable {
     /// URL to scrape to download the file from
-    download_url: Option<Url>,
+    download_url: Url,
 
     /// Disk location to cache the file for debugging
     file_path: Utf8PathBuf,
 }
 
-#[derive(Clone, Default, Deserialize)]
+#[derive(Clone, Deserialize)]
 pub(crate) struct Config {
     #[serde(flatten)]
     pub(crate) dl: SillyDownloadable,
@@ -20,8 +21,15 @@ pub(crate) struct Config {
 }
 
 impl Config {
-    pub(crate) fn simple_download(&self) -> SimpleDownload {
-        todo!()
+    pub(crate) fn simple_download(&self, now: DateTime<chrono_tz::Tz>) -> SimpleDownload {
+        let date = now.format("%Y-%m-%d").to_string();
+        let mut url = self.dl.download_url.clone();
+        url.query_pairs_mut().append_pair("date", &date);
+
+        SimpleDownload {
+            download_url: Some(url),
+            file_path: self.dl.file_path.clone(),
+        }
     }
 }
 
@@ -52,7 +60,7 @@ pub(crate) struct Calendar {
 
 impl Calendar {
     fn to_event_instance(&self, params: &Parameters, ev: &Event) -> Result<Option<EventInstance>> {
-        let dt = chrono::DateTime::from_timestamp_millis(ev.timestamp)
+        let dt = DateTime::from_timestamp_millis(ev.timestamp)
             .context("cannot represent timestamp as a date")?
             .with_timezone(&params.tz);
         let dtstart = crate::DatePerhapsTime { dt, all_day: false };
@@ -95,27 +103,47 @@ impl Calendar {
 mod tests {
     use super::*;
 
-    #[test]
-    fn end_to_end() {
-        let s = r#"
-{"data":{"items":[{"timestamp":1748989800000,"durationInMinutes":90,"title":"Foo Bar","description":""},{"timestamp":1749999600000,"durationInMinutes":30,"title":"Snaf Oo","description":""}]},"success":true,"message":""}
-        "#;
-
-        let cfg = Config {
+    fn example_config() -> Config {
+        Config {
             dl: SillyDownloadable {
-                download_url: None,
+                download_url: Url::parse("https://www.commoninja.com/api/apps/calendar/get-monthly-events?widgetId=00000000-0000-0000-000000000000").unwrap(),
                 file_path: ".".into(),
             },
             ui: CalendarUi {
                 html_url: None,
                 short_name: "asdf".into(),
             },
-        };
+        }
+    }
+
+    #[test]
+    fn end_to_end() {
+        let s = r#"
+{"data":{"items":[{"timestamp":1748989800000,"durationInMinutes":90,"title":"Foo Bar","description":""},{"timestamp":1749999600000,"durationInMinutes":30,"title":"Snaf Oo","description":""}]},"success":true,"message":""}
+        "#;
+
+        let cfg = example_config();
         let cal = Calendar::read_from_str(cfg, s).unwrap();
-        let params =
-            Parameters::new(Utc::now().with_timezone(&chrono_tz::America::Chicago)).unwrap();
+        let params = Parameters::new(
+            DateTime::from_timestamp(1748989700, 0)
+                .unwrap()
+                .with_timezone(&chrono_tz::America::Chicago),
+        )
+        .unwrap();
         let instances = cal.event_instances(&params).unwrap();
 
         assert_eq!(instances.len(), 2);
     }
+
+    #[test]
+    fn unsillify() {
+        let dt = DateTime::from_timestamp(1756190298, 0)
+            .unwrap()
+            .with_timezone(&chrono_tz::America::Chicago);
+        let cfg = example_config();
+        assert_eq!(
+            cfg.simple_download(dt).download_url.unwrap().to_string(),
+            "https://www.commoninja.com/api/apps/calendar/get-monthly-events?widgetId=00000000-0000-0000-000000000000&date=2025-08-26"
+        );
+    }
 }