feat: Let's do a bit of a kata in gleam💎✨

Co-authored-by: Ashish Sehra <ashish.sehra@armakuni.com>
Co-authored-by: Mark Bradley <mark.bradley@armkauni.com>
Co-authored-by: Tom Oram <tom.oram@armakuni.com>
Co-authored-by: Ryan Tiffany <ryan.tiffany@armakuni.com>

.github/workflows/test.yml

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+name: test
+
+on:
+  push:
+    branches:
+      - master
+      - main
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: erlef/setup-beam@v1
+        with:
+          otp-version: "26.0.2"
+          gleam-version: "0.34.1"
+          rebar3-version: "3"
+          # elixir-version: "1.15.4"
+      - run: gleam deps download
+      - run: gleam test
+      - run: gleam format --check src test

.gitignore

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+*.beam
+*.ez
+/build
+erl_crash.dump

README.md

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+# ak_day_play_gleam
+
+[![Package Version](https://img.shields.io/hexpm/v/ak_day_play_gleam)](https://hex.pm/packages/ak_day_play_gleam)
+[![Hex Docs](https://img.shields.io/badge/hex-docs-ffaff3)](https://hexdocs.pm/ak_day_play_gleam/)
+
+```sh
+gleam add ak_day_play_gleam
+```
+```gleam
+import ak_day_play_gleam
+
+pub fn main() {
+  // TODO: An example of the project in use
+}
+```
+
+Further documentation can be found at <https://hexdocs.pm/ak_day_play_gleam>.
+
+## Development
+
+```sh
+gleam run   # Run the project
+gleam test  # Run the tests
+gleam shell # Run an Erlang shell
+```

gleam.toml

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+name = "ak_day_play_gleam"
+version = "1.0.0"
+
+# Fill out these fields if you intend to generate HTML documentation or publish
+# your project to the Hex package manager.
+#
+# description = ""
+# licences = ["Apache-2.0"]
+# repository = { type = "github", user = "username", repo = "project" }
+# links = [{ title = "Website", href = "https://gleam.run" }]
+#
+# For a full reference of all the available options, you can have a look at
+# https://gleam.run/writing-gleam/gleam-toml/. 
+
+[dependencies]
+gleam_stdlib = "~> 0.34 or ~> 1.0"
+
+[dev-dependencies]
+gleeunit = "~> 1.0"

manifest.toml

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+# This file was generated by Gleam
+# You typically do not need to edit this file
+
+packages = [
+  { name = "gleam_stdlib", version = "0.35.1", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "5443EEB74708454B65650FEBBB1EF5175057D1DEC62AEA9D7C6D96F41DA79152" },
+  { name = "gleeunit", version = "1.0.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "D364C87AFEB26BDB4FB8A5ABDE67D635DC9FA52D6AB68416044C35B096C6882D" },
+]
+
+[requirements]
+gleam_stdlib = { version = "~> 0.34 or ~> 1.0" }
+gleeunit = { version = "~> 1.0" }

src/ak_day_play_gleam.gleam

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+import gleam/io
+import gleam/int
+import gleam/result
+import gleam/list
+
+pub fn main() {
+  io.println("Hello from ak_day_play_gleam!")
+}
+
+pub fn score(rolls) {
+  let frames = list.range(0, 9)
+  int.sum(list.map(frames, fn(x) { frame_score(x, rolls) }))
+}
+
+fn frame_score(frame_number, rolls) {
+  let initial_index = 2 * frame_number
+  case
+    result.unwrap(list.at(rolls, initial_index), 0)
+    + result.unwrap(list.at(rolls, initial_index + 1), 0)
+  {
+    10 -> 10 + result.unwrap(list.at(rolls, initial_index + 2), 0)
+    value -> value
+  }
+}

test/ak_day_play_gleam_test.gleam

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+import gleeunit
+import gleeunit/should
+import ak_day_play_gleam
+
+pub fn main() {
+  gleeunit.main()
+}
+
+// gleeunit test functions end in `_test`
+pub fn gutter_ball_game_test() {
+  ak_day_play_gleam.score([
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  ])
+  |> should.equal(0)
+}
+
+pub fn score_of_1_test() {
+  ak_day_play_gleam.score([
+    1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  ])
+  |> should.equal(1)
+}
+
+pub fn score_of_1_not_in_first_frame_test() {
+  ak_day_play_gleam.score([
+    0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  ])
+  |> should.equal(1)
+}
+
+pub fn score_of_2_with_two_singles_test() {
+  ak_day_play_gleam.score([
+    0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  ])
+  |> should.equal(2)
+}
+
+pub fn score_of_3_with_two_non_zero_rolls_test() {
+  ak_day_play_gleam.score([
+    0, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  ])
+  |> should.equal(3)
+}
+
+pub fn score_spare_test() {
+  ak_day_play_gleam.score([
+    6, 4, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  ])
+  |> should.equal(12)
+}
+
+pub fn score_spare_test_doubling_two_test() {
+  ak_day_play_gleam.score([
+    6, 4, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  ])
+  |> should.equal(14)
+}
+
+pub fn score_strike_doubles_the_next_frame_test() {
+  ak_day_play_gleam.score([
+    10, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  ])
+  |> should.equal(14)
+}
+
+pub fn score_adds_up_to_eleven_but_no_spare_test() {
+  ak_day_play_gleam.score([
+    6, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0,
+  ])
+  |> should.equal(11)
+}