From fdaadfe184d6a6d30da9ec0f4e8b53e41d455332 Mon Sep 17 00:00:00 2001
From: Bert Peters <bert@bertptrs.nl>
Date: Thu, 19 Dec 2024 23:24:11 +0100
Subject: [PATCH] Implement day 19 part 1 in Terraform

---
 2024/bonus/day19/main.tf    | 13 +++++++++++++
 2024/bonus/main.tf          |  9 +++++++++
 2024/bonus/tests.tftest.hcl | 17 +++++++++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644 2024/bonus/day19/main.tf

diff --git a/2024/bonus/day19/main.tf b/2024/bonus/day19/main.tf
new file mode 100644
index 0000000..21e7904
--- /dev/null
+++ b/2024/bonus/day19/main.tf
@@ -0,0 +1,13 @@
+variable "input" {
+  type = string
+}
+
+locals {
+  parts    = split("\n\n", chomp((var.input)))
+  patterns = replace(local.parts[0], ", ", "|")
+  valid    = [for line in split("\n", local.parts[1]) : line if length(regexall("^(${local.patterns})+$", line)) > 0]
+}
+
+output "part1" {
+  value = length(local.valid)
+}
diff --git a/2024/bonus/main.tf b/2024/bonus/main.tf
index c45370e..8149729 100644
--- a/2024/bonus/main.tf
+++ b/2024/bonus/main.tf
@@ -78,3 +78,12 @@ output "day11_1" {
 output "day11_2" {
   value = module.day11.part2
 }
+
+module "day19" {
+  source = "./day19"
+  input  = file("../inputs/19.txt")
+}
+
+output "day19_1" {
+  value = module.day19.part1
+}
diff --git a/2024/bonus/tests.tftest.hcl b/2024/bonus/tests.tftest.hcl
index a6127ff..1fc06f1 100644
--- a/2024/bonus/tests.tftest.hcl
+++ b/2024/bonus/tests.tftest.hcl
@@ -147,3 +147,20 @@ run "day11" {
     error_message = "Part1 output is wrong"
   }
 }
+
+run "day19" {
+  command = plan
+
+  module {
+    source = "./day19"
+  }
+
+  variables {
+    input = file("../tests/samples/19.txt")
+  }
+
+  assert {
+    condition     = output.part1 == 6
+    error_message = "Part1 output is wrong"
+  }
+}