# Metadata-only ABI triage so the full build avoids downloading every source.
# Mirrors bincraft::abi_classify rules 1-2; "ambiguous" packages still need a
# source grep via bincraft::needs_per_minor_recompile().

classify_from_metadata <- function(needs_compilation, linking_to, risky_deps) {
  nc <- if (length(needs_compilation) == 0L || is.na(needs_compilation)) {
    ""
  } else {
    tolower(trimws(needs_compilation))
  }
  if (!identical(nc, "yes")) {
    return("not-sensitive")
  }
  lt <- if (length(linking_to) == 0L || is.na(linking_to)) "" else linking_to
  linked <- trimws(unlist(strsplit(lt, "[,\n]")))
  linked <- sub("\\s*\\(.*\\)$", "", linked) # strip "(>= x)" constraints
  linked <- linked[nzchar(linked)]
  if (any(linked %in% risky_deps)) {
    return("sensitive")
  }
  "ambiguous"
}

parse_build_args <- function(args) {
  sensitive_only <- "--sensitive-only" %in% args
  pos <- args[!startsWith(args, "--")]
  list(
    sensitive_only = sensitive_only,
    split_into = as.integer(pos[1L]),
    split_index = as.integer(pos[2L]),
    ncpus = as.integer(pos[3L])
  )
}

# The `single_builds` platform name for a bincraft codename, e.g. alpine324 ->
# "alpine-324", rhel9 -> "redhat-9". NA for a codename this repo does not build.
codename_platform <- function(codename) {
  ubuntu <- c(jammy = "2204", noble = "2404", resolute = "2604")
  if (codename %in% names(ubuntu)) {
    return(paste0("ubuntu-", ubuntu[[codename]]))
  }
  if (grepl("^rhel[0-9]+$", codename)) {
    return(sub("^rhel", "redhat-", codename))
  }
  if (grepl("^alpine[0-9]+$", codename)) {
    return(sub("^alpine", "alpine-", codename))
  }
  NA_character_
}

# The wall-clock deadline a build loop must stop at, from BUILD_DEADLINE (epoch
# seconds). The pipeline sets it once per step, so every pass in the step shares
# one budget and the steps after the builds (archiving, the index upload) still
# get to run before Crow's timeout kills the step. Unset or unparsable means no
# deadline.
build_deadline <- function(value = Sys.getenv("BUILD_DEADLINE", unset = "")) {
  deadline <- suppressWarnings(as.numeric(value))
  if (length(deadline) != 1L || is.na(deadline)) Inf else deadline
}

deadline_reached <- function(deadline, now = as.numeric(Sys.time())) {
  now >= deadline
}