package authreq_test

import (
	"crypto/ed25519"
	"encoding/base64"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	"github.com/julienschmidt/httprouter"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"go.salty.im/saltyim/internal/authreq"
)

var authorizationHeader = "Authorization"

func TestGETRequest(t *testing.T) {
	assert := assert.New(t)
	require := require.New(t)

	pub, priv, err := ed25519.GenerateKey(nil)
	require.NoError(err)

	req, err := http.NewRequest(http.MethodGet, "http://example.com/"+enc(pub)+"/test?q=test", nil)
	require.NoError(err)

	req, err = authreq.Sign(req, priv)
	require.NoError(err)

	var hdlr httprouter.Handle = func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
		c := authreq.ClaimsFromRequest(r)
		if c == nil {
			w.WriteHeader(http.StatusInternalServerError)
			return
		}

		if !strings.Contains(req.URL.Path, c.Issuer) {
			w.WriteHeader(http.StatusForbidden)
			return
		}
	}

	hdlr = authreq.VerifyMiddleware(hdlr)

	rw := httptest.NewRecorder()

	hdlr(rw, req, nil)

	assert.Equal(rw.Code, http.StatusOK)
}

func TestPOSTRequest(t *testing.T) {
	assert := assert.New(t)
	require := require.New(t)

	content := "this is post!"

	pub, priv, err := ed25519.GenerateKey(nil)
	require.NoError(err)

	req, err := http.NewRequest(http.MethodPost, "http://example.com/"+enc(pub)+"/test?q=test", strings.NewReader(content))
	require.NoError(err)

	req, err = authreq.Sign(req, priv)
	require.NoError(err)

	var hdlr httprouter.Handle = func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
		c := authreq.ClaimsFromRequest(r)
		if c == nil {
			w.WriteHeader(http.StatusInternalServerError)
			return
		}

		r.Body.Close()

		if err != nil {
			w.WriteHeader(http.StatusBadRequest)
			return
		}

		if !strings.Contains(req.URL.Path, c.Issuer) {
			w.WriteHeader(http.StatusForbidden)
			return
		}
	}

	hdlr = authreq.VerifyMiddleware(hdlr)

	rw := httptest.NewRecorder()

	hdlr(rw, req, nil)

	assert.Equal(rw.Code, http.StatusOK)

}

func enc(b []byte) string {
	return base64.RawURLEncoding.EncodeToString(b)
}