high-score-board

high-score-board/src/high_score_board.gleam

@@ -0,0 +1,35 @@
+import gleam/dict.{type Dict}
+
+pub type ScoreBoard =
+  Dict(String, Int)
+
+pub fn create_score_board() -> ScoreBoard {
+  dict.from_list([#("The Best Ever", 1_000_000)])
+}
+
+pub fn add_player(
+  score_board: ScoreBoard,
+  player: String,
+  score: Int,
+) -> ScoreBoard {
+  dict.insert(score_board, player, score)
+}
+
+pub fn remove_player(score_board: ScoreBoard, player: String) -> ScoreBoard {
+  dict.drop(score_board, [player])
+}
+
+pub fn update_score(
+  score_board: ScoreBoard,
+  player: String,
+  points: Int,
+) -> ScoreBoard {
+  case dict.get(score_board, player) {
+    Error(_) -> score_board
+    Ok(score) -> dict.insert(score_board, player, score + points)
+  }
+}
+
+pub fn apply_monday_bonus(score_board: ScoreBoard) -> ScoreBoard {
+  dict.map_values(score_board, fn(_, score) { score + 100 })
+}