added corporate quarterly announcments for the last 4 years

src/corporate/helpers.rs

@@ -0,0 +1,52 @@
+// src/corporate/helpers.rs
+use super::types::*;
+use chrono::{Local, NaiveDate};
+use std::collections::{HashMap, HashSet};
+
+pub fn event_key(e: &CompanyEvent) -> String {
+    format!("{}|{}|{}", e.ticker, e.date, e.time)
+}
+
+pub fn detect_changes(old: &CompanyEvent, new: &CompanyEvent, today: &str) -> Vec<CompanyEventChange> {
+    let mut changes = Vec::new();
+    let ts = Local::now().format("%Y-%m-%d %H:%M:%S").to_string();
+
+    if new.date.as_str() <= today { return changes; }
+
+    if old.time != new.time {
+        changes.push(CompanyEventChange {
+            ticker: new.ticker.clone(),
+            date: new.date.clone(),
+            field_changed: "time".to_string(),
+            old_value: old.time.clone(),
+            new_value: new.time.clone(),
+            detected_at: ts.clone(),
+        });
+    }
+
+    if old.eps_forecast != new.eps_forecast {
+        changes.push(CompanyEventChange {
+            ticker: new.ticker.clone(),
+            date: new.date.clone(),
+            field_changed: "eps_forecast".to_string(),
+            old_value: format!("{:?}", old.eps_forecast),
+            new_value: format!("{:?}", new.eps_forecast),
+            detected_at: ts.clone(),
+        });
+    }
+
+    if old.eps_actual != new.eps_actual {
+        changes.push(CompanyEventChange {
+            ticker: new.ticker.clone(),
+            date: new.date.clone(),
+            field_changed: "eps_actual".to_string(),
+            old_value: format!("{:?}", old.eps_actual),
+            new_value: format!("{:?}", new.eps_actual),
+            detected_at: ts.clone(),
+        });
+    }
+
+    // Add similar for revenue if applicable
+
+    changes
+}