From 7562fd3043e460d535a77a4d6a81ed09f6c54085 Mon Sep 17 00:00:00 2001
From: Hayden Johnson <hajohn100@gmail.com>
Date: Wed, 18 Feb 2026 17:51:19 -0800
Subject: [PATCH] Refactor and add exportGame

---
 .gitignore   |  1 +
 main.odin    |  4 ++++
 phase10.odin | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+)

diff --git a/.gitignore b/.gitignore
index 065b0f7..d8b368a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 phase-10-tracker
+*.csv
diff --git a/main.odin b/main.odin
index d1944c1..8dba82b 100644
--- a/main.odin
+++ b/main.odin
@@ -40,9 +40,13 @@ main :: proc() {
         winner = checkWinner(&game)
     }
 
+    // Print winner
     fmt.printfln(
         "%v wins! They had %v points!",
         game.names[winner],
         getScore(&game, winner)
     )
+
+    exportGame(&game, "game.csv")
+
 }
diff --git a/phase10.odin b/phase10.odin
index a2cdbc8..34cc561 100644
--- a/phase10.odin
+++ b/phase10.odin
@@ -1,5 +1,7 @@
 package phase10
 
+import "core:io"
+import "core:encoding/csv"
 import "core:os"
 import "core:strings"
 import "core:strconv"
@@ -131,3 +133,63 @@ getNames :: proc(backingBuffer: []byte) -> []string {
     fmt.print("Enter Names: ")
     return getSpaceDelimetedItems(backingBuffer)
 }
+
+// export a game as a csv
+exportGame :: proc(game: ^Game, filename: string) {
+    // Open handle to file
+    handle, err := os.open(filename, flags = os.O_CREATE | os.O_WRONLY | os.O_TRUNC, mode = 0o666)
+    if err != nil {
+        fmt.eprintln("Could not open file:", filename)
+        return
+    }
+    defer os.close(handle)
+
+    // create stream from file handle
+    stream := os.stream_from_handle(handle)
+    defer io.destroy(stream)
+
+    // Create CSV Writer
+    w: csv.Writer
+    csv.writer_init(&w, stream)
+
+    records: [dynamic][]string
+    defer {
+        for record in records {
+            for col in record {
+                delete(col)
+            }
+            delete(record)
+        }
+        delete(records)
+    }
+
+    // First row is all the names, each subsequent row is the score for a
+    // particular round. It is important that we create a new array for each of
+    // these so we don't accidentally free the actual data in the game struct.
+    nameRow: [dynamic]string
+    for name in game.names {
+        s := strings.clone(name)
+        append(&nameRow, s)
+    }
+    append(&records, nameRow[:])
+
+    for i := 0 ; i < len(game.scores[0]); i += 1 {
+        scoreRowString: [dynamic]string
+        for playerScores in game.scores {
+            s := strings.builder_make()
+            strings.write_int(&s, playerScores[i])
+            scoreCol := strings.to_string(s)
+            append(&scoreRowString, scoreCol)
+        }
+        append(&records, scoreRowString[:])
+    }
+
+    // Write the records to the file
+    csv.write_all(&w, records[:])
+}
+
+// import an existing game from a csv file
+importGame :: proc(filename: string) -> ^Game {
+    // TODO
+    return nil
+}