package gateway

import (
	"context"
	"fmt"
	"net/http"

	"git.chrishayward.xyz/x/users/proto"
)

func Register(client proto.UsersClient) http.HandlerFunc {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		password, passwordAgain :=
			r.URL.Query().Get("password"),
			r.URL.Query().Get("password_again")
		_, err := client.Register(r.Context(), &proto.RegisterRequest{
			Form: &proto.UserForm{
				Email:         r.URL.Query().Get("email"),
				Password:      &password,
				PasswordAgain: &passwordAgain,
			},
		})

		if err != nil {
			w.WriteHeader(http.StatusBadRequest)
			w.Write([]byte(err.Error()))
		}

		w.WriteHeader(http.StatusOK)
	})
}

func Login(client proto.UsersClient) http.HandlerFunc {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		password, passwordAgain :=
			r.URL.Query().Get("password"),
			r.URL.Query().Get("password_again")
		res, err := client.Login(r.Context(), &proto.LoginRequest{
			Form: &proto.UserForm{
				Email:         r.URL.Query().Get("email"),
				Password:      &password,
				PasswordAgain: &passwordAgain,
			},
		})

		if err != nil {
			w.WriteHeader(http.StatusBadRequest)
			w.Write([]byte(err.Error()))
		}

		w.WriteHeader(http.StatusOK)
		w.Write([]byte(res.Token.Token))
	})
}

func Authorize(client proto.UsersClient, serverSecret *string, next http.HandlerFunc) http.HandlerFunc {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		res, err := client.Authorize(r.Context(), &proto.AuthorizeRequest{
			Secret: *serverSecret,
			Token: &proto.UserToken{
				Token: r.URL.Query().Get("token"),
			},
		})

		if err != nil {
			w.WriteHeader(http.StatusBadRequest)
			w.Write([]byte(err.Error()))
		}

		ctx := context.WithValue(r.Context(), "user", res.User)
		ctx = context.WithValue(ctx, "roles", res.Roles)

		next(w, r.WithContext(ctx))
	})
}

func ResetPassword(client proto.UsersClient, endpoint string) http.HandlerFunc {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		res, err := client.ResetPassword(r.Context(), &proto.ResetPasswordRequest{
			Form: &proto.UserForm{
				Email: r.URL.Query().Get("email"),
			},
		})

		if err != nil {
			w.WriteHeader(http.StatusBadRequest)
			w.Write([]byte(err.Error()))
		}

		w.WriteHeader(http.StatusOK)
		w.Write([]byte(fmt.Sprintf(
			"Please follow this link to update your password: %s/change_password?token=%s\n",
			*endpoint, res.Token.Token)))
	})
}

func ChangePassword(client proto.UsersClient) http.HandlerFunc {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		password, passwordAgain :=
			r.URL.Query().Get("password"),
			r.URL.Query().Get("password_again")
		_, err := client.ChangePassword(r.Context(), &proto.ChangePasswordRequest{
			Form: &proto.UserForm{
				Email:         r.URL.Query().Get("email"),
				Password:      &password,
				PasswordAgain: &passwordAgain,
			},
		})

		if err != nil {
			w.WriteHeader(http.StatusBadRequest)
			w.Write([]byte(err.Error()))
		}

		w.WriteHeader(http.StatusOK)
	})
}