Add TimeseriesRequestArgs struct and refactor get_timeseries_batch method to use it

src/requester.rs

@@ -1,10 +1,8 @@
 use reqwest::blocking::Client;
 use reqwest::header::{HeaderMap, HeaderName, HeaderValue};
-// use std::collections::HashMap;
 use std::error::Error;
 
 use crate::oauth_client::OAuthClient;
-// use crate::timeseries::TimeSeries;
 
 const API_BASE_URL: &str = "https://api-developer.jpmorgan.com/research/dataquery-authe/api/v2";
 const HEARTBEAT_ENDPOINT: &str = "/services/heartbeat";
@@ -15,6 +13,39 @@ pub struct Requester {
     rqclient: Client,
 }
 
+#[derive(Default)]
+pub struct TimeseriesRequestArgs {
+    pub start_date: String,
+    pub end_date: String,
+    pub calendar: String,
+    pub frequency: String,
+    pub conversion: String,
+    pub nan_treatment: String,
+    pub expressions: Vec<String>,
+}
+
+impl TimeseriesRequestArgs {
+    pub fn new(
+        start_date: Option<&str>,
+        end_date: Option<&str>,
+        calendar: Option<&str>,
+        frequency: Option<&str>,
+        conversion: Option<&str>,
+        nan_treatment: Option<&str>,
+        expressions: Vec<&str>,
+    ) -> Self {
+        TimeseriesRequestArgs {
+            start_date: start_date.unwrap_or("2024-10-20").to_string(),
+            end_date: end_date.unwrap_or("TODAY").to_string(),
+            calendar: calendar.unwrap_or("CAL_ALLDAYS").to_string(),
+            frequency: frequency.unwrap_or("FREQ_DAY").to_string(),
+            conversion: conversion.unwrap_or("CONV_LASTBUS_ABS").to_string(),
+            nan_treatment: nan_treatment.unwrap_or("NA_NOTHING").to_string(),
+            expressions: expressions.into_iter().map(|s| s.to_string()).collect(),
+        }
+    }
+}
+
 impl Requester {
     pub fn new(oauth_client: OAuthClient) -> Self {
         Requester {
@@ -58,32 +89,29 @@ impl Requester {
         println!("Connection is successful: {}", response.status());
         Ok(())
     }
+
     pub fn get_timeseries_batch(
         &mut self,
-        start_date: &str,
-        end_date: &str,
-        calendar: &str,
-        frequency: &str,
-        conversion: &str,
-        nan_treatment: &str,
-        expressions: Vec<&str>,
+        args: TimeseriesRequestArgs,
     ) -> Result<reqwest::blocking::Response, Box<dyn Error>> {
+        if args.expressions.len() < 1 || args.expressions.len() > 20 {
+            return Err("Number of expressions must be between 1 and 20".into());
+        }
+
         // Construct the parameters
         let mut params = vec![
             ("format", "JSON"),
-            ("start-date", start_date),
-            ("end-date", end_date),
-            ("calendar", calendar),
-            ("frequency", frequency),
-            ("conversion", conversion),
-            ("nan_treatment", nan_treatment),
+            ("start-date", &args.start_date),
+            ("end-date", &args.end_date),
+            ("calendar", &args.calendar),
+            ("frequency", &args.frequency),
+            ("conversion", &args.conversion),
+            ("nan_treatment", &args.nan_treatment),
             ("data", "NO_REFERENCE_DATA"),
         ];
-        if (20 < expressions.len()) || (expressions.len() < 1) {
-            return Err("Number of expressions must be between 1 and 20".into());
-        }
+
         // Add expressions to the parameters
-        for expression in expressions {
+        for expression in &args.expressions {
             params.push(("expressions", expression));
         }
 
@@ -93,21 +121,21 @@ impl Requester {
 
         Ok(response)
     }
+
     pub fn get_timeseries_with_defaults(
         &mut self,
         expressions: Vec<&str>,
     ) -> Result<reqwest::blocking::Response, Box<dyn Error>> {
-        self.get_timeseries_batch(
-            // start_date,
-            // end_date,
-            "2024-10-20",
-            "TODAY",
-            // "CAL_WEEKDAYS",
-            "CAL_ALLDAYS",
-            "FREQ_DAY",
-            "CONV_LASTBUS_ABS",
-            "NA_NOTHING",
+        let args = TimeseriesRequestArgs::new(
+            "1990-01-01".into(),
+            "TODAY+1".into(),
+            "CAL_ALLDAYS".into(),
+            "FREQ_DAY".into(),
+            "CONV_LASTBUS_ABS".into(),
+            "NA_NOTHING".into(),
             expressions,
-        )
+        );
+
+        self.get_timeseries_batch(args)
     }
 }