package main

import (
	"fmt"

	"github.com/novox/mesh-controller/internal/catalogue"
)

// unboundLines say which optional requirements of a machine's modules nothing assigned answers
// (novox/hq ADR 0330 §7): left unbound rather than refused, with nothing installed for them, so the
// module runs without — and said, because a data source that never appears is otherwise a silence.
// Each binds without anybody's act on the first composition after a provider is assigned.
func unboundLines(plan catalogue.Resolution) []string {
	lines := make([]string, 0, len(plan.Absent))
	for _, a := range plan.Absent {
		lines = append(lines, fmt.Sprintf(
			"  unbound  %s, optional for %s — nothing assigned provides it; it binds once a provider is "+
				"assigned (novox/hq ADR 0330)", a.Requirement, a.Consumer))
	}
	return lines
}