// Copyright 2015 go-swagger maintainers
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package security

import (
	"context"
	"net/http"
	"testing"

	"github.com/go-openapi/errors"
	"github.com/stretchr/testify/assert"
)

var tokenAuth = TokenAuthentication(func(token string) (interface{}, error) {
	if token == "token123" {
		return "admin", nil
	}
	return nil, errors.Unauthenticated("token")
})

var tokenAuthCtx = TokenAuthenticationCtx(func(ctx context.Context, token string) (context.Context, interface{}, error) {
	if token == "token123" {
		return context.WithValue(ctx, extra, extraWisdom), "admin", nil
	}
	return context.WithValue(ctx, reason, expReason), nil, errors.Unauthenticated("token")
})

func TestInvalidApiKeyAuthInitialization(t *testing.T) {
	assert.Panics(t, func() { APIKeyAuth("api_key", "qery", tokenAuth) })
}

func TestValidApiKeyAuth(t *testing.T) {
	ta := APIKeyAuth("api_key", "query", tokenAuth)
	ta2 := APIKeyAuth("X-API-KEY", "header", tokenAuth)

	req1, _ := http.NewRequest("GET", "/blah?api_key=token123", nil)

	ok, usr, err := ta.Authenticate(req1)
	assert.True(t, ok)
	assert.Equal(t, "admin", usr)
	assert.NoError(t, err)

	req2, _ := http.NewRequest("GET", "/blah", nil)
	req2.Header.Set("X-API-KEY", "token123")

	ok, usr, err = ta2.Authenticate(req2)
	assert.True(t, ok)
	assert.Equal(t, "admin", usr)
	assert.NoError(t, err)
}

func TestInvalidApiKeyAuth(t *testing.T) {
	ta := APIKeyAuth("api_key", "query", tokenAuth)
	ta2 := APIKeyAuth("X-API-KEY", "header", tokenAuth)

	req1, _ := http.NewRequest("GET", "/blah?api_key=token124", nil)

	ok, usr, err := ta.Authenticate(req1)
	assert.True(t, ok)
	assert.Equal(t, nil, usr)
	assert.Error(t, err)

	req2, _ := http.NewRequest("GET", "/blah", nil)
	req2.Header.Set("X-API-KEY", "token124")

	ok, usr, err = ta2.Authenticate(req2)
	assert.True(t, ok)
	assert.Equal(t, nil, usr)
	assert.Error(t, err)
}

func TestMissingApiKeyAuth(t *testing.T) {
	ta := APIKeyAuth("api_key", "query", tokenAuth)
	ta2 := APIKeyAuth("X-API-KEY", "header", tokenAuth)

	req1, _ := http.NewRequest("GET", "/blah", nil)
	req1.Header.Set("X-API-KEY", "token123")

	ok, usr, err := ta.Authenticate(req1)
	assert.False(t, ok)
	assert.Equal(t, nil, usr)
	assert.NoError(t, err)

	req2, _ := http.NewRequest("GET", "/blah?api_key=token123", nil)

	ok, usr, err = ta2.Authenticate(req2)
	assert.False(t, ok)
	assert.Equal(t, nil, usr)
	assert.NoError(t, err)
}

func TestInvalidApiKeyAuthInitializationCtx(t *testing.T) {
	assert.Panics(t, func() { APIKeyAuthCtx("api_key", "qery", tokenAuthCtx) })
}

func TestValidApiKeyAuthCtx(t *testing.T) {
	ta := APIKeyAuthCtx("api_key", "query", tokenAuthCtx)
	ta2 := APIKeyAuthCtx("X-API-KEY", "header", tokenAuthCtx)

	req1, _ := http.NewRequest("GET", "/blah?api_key=token123", nil)
	req1 = req1.WithContext(context.WithValue(req1.Context(), original, wisdom))
	ok, usr, err := ta.Authenticate(req1)
	assert.True(t, ok)
	assert.Equal(t, "admin", usr)
	assert.NoError(t, err)
	assert.Equal(t, wisdom, req1.Context().Value(original))
	assert.Equal(t, extraWisdom, req1.Context().Value(extra))
	assert.Nil(t, req1.Context().Value(reason))

	req2, _ := http.NewRequest("GET", "/blah", nil)
	req2 = req2.WithContext(context.WithValue(req2.Context(), original, wisdom))
	req2.Header.Set("X-API-KEY", "token123")

	ok, usr, err = ta2.Authenticate(req2)
	assert.True(t, ok)
	assert.Equal(t, "admin", usr)
	assert.NoError(t, err)
	assert.Equal(t, wisdom, req2.Context().Value(original))
	assert.Equal(t, extraWisdom, req2.Context().Value(extra))
	assert.Nil(t, req2.Context().Value(reason))
}

func TestInvalidApiKeyAuthCtx(t *testing.T) {
	ta := APIKeyAuthCtx("api_key", "query", tokenAuthCtx)
	ta2 := APIKeyAuthCtx("X-API-KEY", "header", tokenAuthCtx)

	req1, _ := http.NewRequest("GET", "/blah?api_key=token124", nil)
	req1 = req1.WithContext(context.WithValue(req1.Context(), original, wisdom))
	ok, usr, err := ta.Authenticate(req1)
	assert.True(t, ok)
	assert.Equal(t, nil, usr)
	assert.Error(t, err)
	assert.Equal(t, wisdom, req1.Context().Value(original))
	assert.Equal(t, expReason, req1.Context().Value(reason))
	assert.Nil(t, req1.Context().Value(extra))

	req2, _ := http.NewRequest("GET", "/blah", nil)
	req2 = req2.WithContext(context.WithValue(req2.Context(), original, wisdom))
	req2.Header.Set("X-API-KEY", "token124")

	ok, usr, err = ta2.Authenticate(req2)
	assert.True(t, ok)
	assert.Equal(t, nil, usr)
	assert.Error(t, err)
	assert.Equal(t, wisdom, req2.Context().Value(original))
	assert.Equal(t, expReason, req2.Context().Value(reason))
	assert.Nil(t, req2.Context().Value(extra))
}

func TestMissingApiKeyAuthCtx(t *testing.T) {
	ta := APIKeyAuthCtx("api_key", "query", tokenAuthCtx)
	ta2 := APIKeyAuthCtx("X-API-KEY", "header", tokenAuthCtx)

	req1, _ := http.NewRequest("GET", "/blah", nil)
	req1 = req1.WithContext(context.WithValue(req1.Context(), original, wisdom))
	req1.Header.Set("X-API-KEY", "token123")

	ok, usr, err := ta.Authenticate(req1)
	assert.False(t, ok)
	assert.Equal(t, nil, usr)
	assert.NoError(t, err)
	assert.Equal(t, wisdom, req1.Context().Value(original))
	assert.Nil(t, req1.Context().Value(reason))
	assert.Nil(t, req1.Context().Value(extra))

	req2, _ := http.NewRequest("GET", "/blah?api_key=token123", nil)
	req2 = req2.WithContext(context.WithValue(req2.Context(), original, wisdom))
	ok, usr, err = ta2.Authenticate(req2)
	assert.False(t, ok)
	assert.Equal(t, nil, usr)
	assert.NoError(t, err)
	assert.Equal(t, wisdom, req2.Context().Value(original))
	assert.Nil(t, req2.Context().Value(reason))
	assert.Nil(t, req2.Context().Value(extra))
}