resource "random_password" "grafana" {
  length  = 32
  special = false
}

resource "postgresql_role" "grafana" {
  name     = "grafana"
  login    = true
  password = random_password.grafana.result

  lifecycle {
    ignore_changes = [password]
  }
}

resource "postgresql_database" "grafana" {
  name  = "grafana"
  owner = postgresql_role.grafana.name
}

# Allows vault_db_admin to ALTER ROLE grafana PASSWORD '...' for credential rotation.
resource "postgresql_grant_role" "vault_db_admin_grafana" {
  role              = postgresql_role.vault_db_admin.name
  grant_role        = postgresql_role.grafana.name
  with_admin_option = true
}