Update app.R

app.R

@@ -40,6 +40,49 @@ pitch_colors <- c(
   "Other" = "#D3D3D3"
 )
 
+# Function to convert date formats (MM/DD/YYYY or M/D/YYYY to YYYY-MM-DD)
+convert_date_format <- function(date_string) {
+  if (is.na(date_string) || date_string == "") {
+    return(NA)
+  }
+  
+  # Convert to character if not already
+  date_string <- as.character(date_string)
+  
+  # Check if already in YYYY-MM-DD format
+  if (grepl("^\\d{4}-\\d{2}-\\d{2}$", date_string)) {
+    return(date_string)
+  }
+  
+  # Try to parse MM/DD/YYYY or M/D/YYYY format
+  if (grepl("^\\d{1,2}/\\d{1,2}/\\d{4}$", date_string)) {
+    parsed_date <- tryCatch({
+      as.Date(date_string, format = "%m/%d/%Y")
+    }, error = function(e) NA)
+    
+    if (!is.na(parsed_date)) {
+      return(format(parsed_date, "%Y-%m-%d"))
+    }
+  }
+  
+  # Return original if no conversion possible
+  return(date_string)
+}
+
+# Function to convert date columns in a dataframe
+convert_date_columns <- function(df) {
+  # Common date column names in TrackMan data
+  date_columns <- c("Date", "GameDate", "UTCDate", "LocalDateTime")
+  
+  for (col in date_columns) {
+    if (col %in% names(df)) {
+      df[[col]] <- sapply(df[[col]], convert_date_format, USE.NAMES = FALSE)
+    }
+  }
+  
+  return(df)
+}
+
 # Function to parse bat tracking JSON
 parse_bat_tracking_json <- function(json_path) {
   tryCatch({
@@ -613,6 +656,9 @@ server <- function(input, output, session) {
                      quote = input$quote,
                      stringsAsFactors = FALSE)
       
+      # Auto-convert date formats (MM/DD/YYYY to YYYY-MM-DD)
+      df <- convert_date_columns(df)
+      
       csv_data_raw(df)
       
       # If we already have bat tracking data, try to merge
@@ -704,6 +750,7 @@ server <- function(input, output, session) {
       paste("  Game ID:", game_id),
       paste("  Rows:", nrow(df)),
       paste("  Columns:", ncol(df)),
+      "✓ Date formats auto-converted (MM/DD/YYYY → YYYY-MM-DD)",
       sep = "\n"
     )
   })
@@ -918,6 +965,7 @@ server <- function(input, output, session) {
       removed_cols_text,
       bat_tracking_text,
       "✓ Duplicates removed",
+      "✓ Dates converted to YYYY-MM-DD",
       sep = "\n"
     )
     
@@ -1330,6 +1378,7 @@ server <- function(input, output, session) {
               "TaggedPitchType column not available"
             }),
       bat_tracking_summary,
+      "Date format: YYYY-MM-DD (auto-converted)",
       sep = "\n"
     )