locals {
  terraform_service_account = "terraform@fcuny-homelab.iam.gserviceaccount.com"
}

provider "google" {
  alias = "impersonation"
  scopes = [
    "https://www.googleapis.com/auth/cloud-platform",
    "https://www.googleapis.com/auth/userinfo.email",
  ]
}

data "google_service_account_access_token" "default" {
  provider               = google.impersonation
  target_service_account = local.terraform_service_account
  scopes                 = ["userinfo-email", "cloud-platform"]
  lifetime               = "1200s"
}

provider "google" {
  project         = "fcuny-backups"
  region          = "us-west1"
  zone            = "us-west1-c"
  access_token    = data.google_service_account_access_token.default.access_token
  request_timeout = "60s"
}

terraform {
  backend "gcs" {
    bucket                      = "world-tf-state"
    prefix                      = "backups/state"
    impersonate_service_account = "terraform@fcuny-homelab.iam.gserviceaccount.com"
  }
}

resource "google_service_account" "restic" {
  account_id   = "restic"
  description  = "For backups with restic"
  display_name = "Restic Service Account"
}

resource "google_storage_bucket" "archives" {
  name                        = "fcuny-archives"
  location                    = "US"
  storage_class               = "NEARLINE"
  uniform_bucket_level_access = true
  versioning {
    enabled = false
  }
  lifecycle_rule {
    action {
      type          = "SetStorageClass"
      storage_class = "ARCHIVE"
    }
    condition {
      matches_storage_class = ["NEARLINE"]
      age                   = 10
    }
  }
}

resource "google_storage_bucket" "backups-systems" {
  name                        = "fcuny-backups-systems"
  location                    = "US"
  storage_class               = "NEARLINE"
  uniform_bucket_level_access = true
  versioning {
    enabled = false
  }
}

resource "google_storage_bucket_iam_member" "backups-systems" {
  bucket = google_storage_bucket.backups-systems.name
  role   = "roles/storage.objectAdmin"
  member = "serviceAccount:${google_service_account.restic.email}"
}

resource "google_storage_bucket_iam_binding" "backups-systems-create" {
  bucket = google_storage_bucket.backups-systems.name
  role   = "roles/storage.objectCreator"
  members = [
    "serviceAccount:${google_service_account.restic.email}",
  ]
}

resource "google_storage_bucket_iam_binding" "backups-systems-view" {
  bucket = google_storage_bucket.backups-systems.name
  role   = "roles/storage.objectViewer"
  members = [
    "serviceAccount:${google_service_account.restic.email}",
  ]
}

resource "google_storage_bucket" "backups-users" {
  name                        = "fcuny-backups-users"
  location                    = "US"
  storage_class               = "NEARLINE"
  uniform_bucket_level_access = true
  versioning {
    enabled = false
  }
}

resource "google_storage_bucket_iam_member" "backups-users" {
  bucket = google_storage_bucket.backups-users.name
  role   = "roles/storage.objectAdmin"
  member = "serviceAccount:${google_service_account.restic.email}"
}

resource "google_storage_bucket_iam_binding" "backups-users-create" {
  bucket = google_storage_bucket.backups-users.name
  role   = "roles/storage.objectCreator"
  members = [
    "serviceAccount:${google_service_account.restic.email}",
  ]
}

resource "google_storage_bucket_iam_binding" "backups-users-view" {
  bucket = google_storage_bucket.backups-users.name
  role   = "roles/storage.objectViewer"
  members = [
    "serviceAccount:${google_service_account.restic.email}",
  ]
}

resource "google_storage_bucket" "restic" {
  name                        = "fcuny-restic"
  location                    = "US"
  storage_class               = "COLDLINE"
  uniform_bucket_level_access = true
  versioning {
    enabled = false
  }
  lifecycle_rule {
    action {
      type          = "SetStorageClass"
      storage_class = "ARCHIVE"
    }
    condition {
      matches_storage_class = ["COLDLINE"]
      age                   = 30
    }
  }
}

resource "google_storage_bucket" "repositories" {
  name                        = "fcuny-repositories"
  location                    = "US"
  storage_class               = "COLDLINE"
  uniform_bucket_level_access = true
  versioning {
    enabled = false
  }
  lifecycle_rule {
    action {
      type          = "SetStorageClass"
      storage_class = "ARCHIVE"
    }
    condition {
      matches_storage_class = ["COLDLINE"]
      age                   = 30
    }
  }
}