Implement day 8 2024 in Terraform

2024/bonus/day08/main.tf

@@ -0,0 +1,54 @@
+variable "input" {
+  type    = string
+  default = <<-EOT
+  ............
+  ........0...
+  .....0......
+  .......0....
+  ....0.......
+  ......A.....
+  ............
+  ............
+  ........A...
+  .........A..
+  ............
+  ............
+  EOT
+
+}
+
+locals {
+  lines  = split("\n", chomp(var.input))
+  height = length(local.lines)
+  width  = length(local.lines[0])
+
+  antennae = concat([
+    for y in range(local.height) :
+    [
+      for x in range(local.width) :
+      [substr(local.lines[y], x, 1), x, y]
+      if substr(local.lines[y], x, 1) != "."
+    ]
+  ]...)
+
+  by_freq = {
+    for antenna in local.antennae :
+    antenna[0] => [antenna[1], antenna[2]]...
+  }
+}
+
+module "freq" {
+  source   = "./freq"
+  for_each = local.by_freq
+  width    = local.width
+  height   = local.height
+  antennae = each.value
+}
+
+output "part1" {
+  value = length(setunion([for _, v in module.freq : v.nodes1]...))
+}
+
+output "part2" {
+  value = length(setunion([for _, v in module.freq : v.nodes2]...))
+}