Make recipe yield for grocery list a parameter

src/commands/groceries.rs

@@ -19,6 +19,7 @@ pub async fn with(
     location: &str,
     start_date: Option<NaiveDate>,
     days: u32,
+    required_yield: f64,
 ) -> Result<()> {
     use chrono::{NaiveDateTime, NaiveTime, TimeZone};
     let start = start_date
@@ -34,9 +35,7 @@ pub async fn with(
     };
 
     let ids = map_events_to_recipe_ids(api_client, calendar_name, &date_range).await?;
-
+    let ingredients = get_ingredients(api_client, ids, required_yield).await?;
-    // TODO: make required_yield configurable!
-    let ingredients = get_ingredients(api_client, ids, 4.0).await?;
     let ingredients = merge_ingredients(ingredients);
     let md = prepare_grocery_list(&date_range, &ingredients)?;
     log::debug!("Saving the following grocery list:\n\n{}", &md);

src/main.rs

@@ -55,6 +55,10 @@ fn setup_args() -> ArgMatches {
                     .value_parser(clap::builder::RangedU64ValueParser::<u32>::new().range(1..))
                     .required(false)
                     .default_value("7"))
+                .arg(arg!(-y --yield <n> "How many servings per meal to consider")
+                    .value_parser(clap::builder::RangedU64ValueParser::<u64>::new().range(1..))
+                    .required(false)
+                    .default_value("4"))
         )
         .subcommand(
             Command::new("schedule")
@@ -110,6 +114,7 @@ async fn parse_args(args: &ArgMatches) -> Result<()> {
                 .map(|s| chrono::NaiveDate::parse_from_str(&s, "%Y-%m-%d"))
                 .transpose()?;
             let days = sub_matches.get_one::<u32>("days").unwrap();
+            let meal_yield = sub_matches.get_one::<u64>("yield").unwrap();
             let filename = sub_matches.get_one::<String>("filename").unwrap();
             commands::groceries::with(
                 &api_client,
@@ -117,6 +122,7 @@ async fn parse_args(args: &ArgMatches) -> Result<()> {
                 filename,
                 start_date,
                 *days,
+                *meal_yield as f64,
             )
             .await
         }