# Preauth build config
#
# CI (develop.yaml / docker.yaml) invokes this with --file so the compose
# file that lives in the same directory is not merged in as extra targets.
#
# DOCKERHUB_TARGET is the org/repo (Gitea Settings → Variables)
# CI sets TAG=latest + VERSION=<v-stripped> for tag pushes,
#         TAG=develop  for pushes to main.
#
# MAX_REQUESTS=0 docker buildx bake # specify variables to override

variable "DOCKERHUB_TARGET" {
  default     = "digitaladapt/preauth"
  description = "Docker Hub repo/org (Gitea repo variable DOCKERHUB_TARGET)."
}

variable "TAG" {
  default     = "latest"
  description = "Base tag for this build: latest (release), develop (main push), or a version."
}

variable "VERSION" {
  default     = ""
  description = "Full version (v stripped) to also tag with; empty for develop builds."
}

variable "MAX_REQUESTS" {
  default     = "500"
  description = "Restart each FrankenPHP worker thread after N requests (0 disables). Baked in at build time; the same env var overrides it at runtime."
}

group "default" {
  targets = ["app"]
}

target "app" {
  dockerfile = "Dockerfile"
  target     = "app"
  context    = "."
  platforms  = ["linux/amd64", "linux/arm64"]

  # Layer cache. The shared docker-publish.yaml sets cache-from/cache-to for
  # its `action` backend but NOT for `bake`, so specifying it here is what keeps
  # CI builds warm. preauth compiles APCu from source (pecl) in both stages, so
  # a cold build is expensive.
  #
  # Local builds outside CI have no GHA cache service, so override:
  #   docker buildx bake --set 'app.cache-to=' --set 'app.cache-from='
  cache-from = ["type=gha"]
  cache-to   = ["type=gha,mode=max"]

  # The Dockerfile declares ARG MAX_REQUESTS=500 for plain `docker build`.
  # It is repeated explicitly here so CI's value is visible and can be changed
  # in this file instead of in a workflow. Keep the two defaults in sync.
  args = {
    MAX_REQUESTS = "${MAX_REQUESTS}"
  }

  tags = concat(
    ["${DOCKERHUB_TARGET}:${TAG}"],
    VERSION != "" ? ["${DOCKERHUB_TARGET}:${VERSION}"] : [],
  )
}