package server

import (
	"encoding/json"
	"io"
	"net/http"
)

type AuthProvider interface {
	ProviderName() string
	ProviderID() *string
	ProviderType() string
}

type AuthProviderBase struct {
	Name string  `json:"name"`
	ID   *string `json:"id"`
	Type string  `json:"type"`
}

func (bp *AuthProviderBase) ProviderName() string { return bp.Name }
func (bp *AuthProviderBase) ProviderID() *string  { return bp.ID }
func (bp *AuthProviderBase) ProviderType() string { return bp.Type }

type LocalProvider struct {
	AuthProviderBase
}

func hassProvider() *LocalProvider {
	return &LocalProvider{
		AuthProviderBase: AuthProviderBase{
			Name: "Home Assistant Local",
			Type: "homeassistant",
		},
	}
}

// TODO: make this configurable
func (s *Server) providersHandler(w http.ResponseWriter, r *http.Request) {
	providers := []AuthProvider{
		hassProvider(),
	}

	rjs, err := json.Marshal(providers)
	if err != nil {
		panic(err)
	}

	logRequest(http.StatusOK, r)

	_, err = w.Write(rjs)
	if err != nil {
		panic(err)
	}
}

func (s *Server) authorizeHandler(w http.ResponseWriter, r *http.Request) {
	authPage, err := s.rootFS.Open("authorize.html")
	if err != nil {
		panic(err)
	}
	defer authPage.Close()

	logRequest(http.StatusOK, r)

	_, err = io.Copy(w, authPage)
	if err != nil {
		panic(err)
	}
}

type flowRequest struct {
	ClientID    string    `json:"client_id"`
	Handler     []*string `json:"handler"`
	RedirectURI string    `json:"redirect_uri"`
}

func (s *Server) loginFlowHandler(w http.ResponseWriter, r *http.Request) {
	var flowReq flowRequest
	err := json.NewDecoder(r.Body).Decode(&flowReq)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)

		return
	}

}