package oidc

import (
	"context"

	"github.com/coreos/go-oidc/v3/oidc"
)

type OptionFunc func(*Option)

type Option struct {
	Provider        *oidc.Provider
	ClientID        string
	ClientSecret    string
	RedirectURL     string
	Scopes          []string
	AcrValues       string
	SkipIssuerCheck bool
}

func WithRedirectURL(url string) OptionFunc {
	return func(opt *Option) {
		opt.RedirectURL = url
	}
}

func WithCredentials(clientID, clientSecret string) OptionFunc {
	return func(opt *Option) {
		opt.ClientID = clientID
		opt.ClientSecret = clientSecret
	}
}

func WithScopes(scopes ...string) OptionFunc {
	return func(opt *Option) {
		opt.Scopes = scopes
	}
}

func WithAcrValues(acrValues string) OptionFunc {
	return func(opt *Option) {
		opt.AcrValues = acrValues
	}
}

func WithSkipIssuerCheck(skip bool) OptionFunc {
	return func(opt *Option) {
		opt.SkipIssuerCheck = skip
	}
}

func NewProvider(ctx context.Context, issuer string, skipIssuerVerification bool) (*oidc.Provider, error) {
	if skipIssuerVerification {
		ctx = oidc.InsecureIssuerURLContext(ctx, issuer)
	}

	return oidc.NewProvider(ctx, issuer)
}

func WithProvider(provider *oidc.Provider) OptionFunc {
	return func(opt *Option) {
		opt.Provider = provider
	}
}

func fromDefault(funcs ...OptionFunc) *Option {
	opt := &Option{
		Scopes: []string{oidc.ScopeOpenID},
	}

	for _, f := range funcs {
		f(opt)
	}

	return opt
}