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package acme

import "errors"

var (
	ErrNotImplemented = errors.New("not implemented")
	ErrSkipped        = errors.New("solver skipped")
)

// WellKnown URL path
const WellKnown = `/.well-known/acme-challenge/`

// Solver decribes a solving interface
type Solver interface {
	Solve(Challenge) error
	Solved() error
	Type() ChalType
}

type Solvers map[ChalType]Solver

func NewSolvers(sols ...Solver) Solvers {
	sol := make(Solvers)
	for _, s := range sols {
		sol[s.Type()] = s
	}
	return sol
}

func (s Solvers) Add(sol Solver) {
	if sol != nil {
		s[sol.Type()] = sol
	}
}