package dockerfile

import (
	"fmt"

	"github.com/alexei/tinyforge/internal/workload/plugin"
)

// idShort is the first 8 chars of the workload ID. Same shape as the
// static plugin — workload names are not UNIQUE in the schema, the ID
// short suffix is what keeps two same-named workloads from clobbering
// each other's container/image artifacts.
func idShort(w plugin.Workload) string {
	if len(w.ID) < 8 {
		return w.ID
	}
	return w.ID[:8]
}

// containerNameFor is the deterministic container name. Prefix `tf-build-`
// distinguishes a dockerfile-built container from `dw-site-` (static) and
// per-stage image names at a glance in `docker ps`.
func containerNameFor(w plugin.Workload) string {
	return fmt.Sprintf("tf-build-%s-%s", w.Name, idShort(w))
}

// imageTagFor is the deterministic image tag the build step emits. Same
// shape as the container name so `docker images` shows the linkage at a
// glance.
func imageTagFor(w plugin.Workload) string {
	return fmt.Sprintf("tf-build-%s-%s:latest", w.Name, idShort(w))
}