1.tf

variable "data" {
  default = [
    {
      name = "vapp1"
      metadata = {
        a = 1
        b = 2
      }
      virtuals = [
        { name = "v1" },
        { name = "v2" },
        { name = "v3" },
      ]
    },
    {
      name = "vapp2"
      metadata = {
        a = 1
        b = 2
      }
      virtuals = [
        { name = "v1" },
        { name = "v2" },
        { name = "v3" },
      ]
    },
    {
      name = "vapp3"
      metadata = {
        a = 1
        b = 2
      }
      virtuals = [
        { name = "v1" },
        { name = "v2" },
        { name = "v3" },
      ]
    },
  ]
}

locals {
  transformed_data = merge([
    for app in var.data : {
      for virtual in app.virtuals : "${replace(app.name, "-", "_")}/${virtual.name}" => {
        name     = "${replace(app.name, "-", "_")}-${virtual.name}"
        metadata = app.metadata
      }
    }
  ]...)
}

output "transformed_data" {
  value = local.transformed_data
}