package orchestration

import (
	"crypto/rand"
	"encoding/hex"
	"io"
	"log/slog"

	"git.yeij.top/AskaEth/Cyrene_v2/internal/logger"
)

// sourcedLog returns the base logger tagged with source "orchestration",
// replacing a nil logger with a discard one so the scheduler can always log.
func sourcedLog(l *slog.Logger) *slog.Logger {
	if l == nil {
		l = slog.New(slog.NewTextHandler(io.Discard, nil))
	}
	return logger.WithSource(l, "orchestration")
}

// prefixBytes is the number of random bytes used to build the sub-agent id
// prefix.
const prefixBytes = 4

// randPrefix returns a short random prefix for sub-agent ids, falling back to
// "sub" if the system entropy source is unavailable.
func randPrefix() string {
	var b [prefixBytes]byte
	if _, err := rand.Read(b[:]); err != nil {
		return "sub"
	}
	return "sub-" + hex.EncodeToString(b[:])
}