// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package webfinger_test

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/stretchr/testify/suite"
	"github.com/superseriousbusiness/gotosocial/internal/api/wellknown/webfinger"
	"github.com/superseriousbusiness/gotosocial/internal/config"
	"github.com/superseriousbusiness/gotosocial/internal/processing"
	"github.com/superseriousbusiness/gotosocial/testrig"
)

type WebfingerGetTestSuite struct {
	WebfingerStandardTestSuite
}

func (suite *WebfingerGetTestSuite) TestFingerUser() {
	targetAccount := suite.testAccounts["local_account_1"]

	// setup request
	host := config.GetHost()
	requestPath := fmt.Sprintf("/%s?resource=acct:%s@%s", webfinger.WebfingerBasePath, targetAccount.Username, host)

	recorder := httptest.NewRecorder()
	ctx, _ := testrig.CreateGinTestContext(recorder, nil)
	ctx.Request = httptest.NewRequest(http.MethodGet, requestPath, nil) // the endpoint we're hitting
	ctx.Request.Header.Set("accept", "application/json")

	// trigger the function being tested
	suite.webfingerModule.WebfingerGETRequest(ctx)

	// check response
	suite.EqualValues(http.StatusOK, recorder.Code)

	result := recorder.Result()
	defer result.Body.Close()
	b, err := ioutil.ReadAll(result.Body)
	suite.NoError(err)
	dst := new(bytes.Buffer)
	err = json.Indent(dst, b, "", "  ")
	suite.NoError(err)
	suite.Equal(`{
  "subject": "acct:the_mighty_zork@localhost:8080",
  "aliases": [
    "http://localhost:8080/users/the_mighty_zork",
    "http://localhost:8080/@the_mighty_zork"
  ],
  "links": [
    {
      "rel": "http://webfinger.net/rel/profile-page",
      "type": "text/html",
      "href": "http://localhost:8080/@the_mighty_zork"
    },
    {
      "rel": "self",
      "type": "application/activity+json",
      "href": "http://localhost:8080/users/the_mighty_zork"
    }
  ]
}`, dst.String())
}

func (suite *WebfingerGetTestSuite) TestFingerUserWithDifferentAccountDomainByHost() {
	config.SetHost("gts.example.org")
	config.SetAccountDomain("example.org")

	suite.processor = processing.NewProcessor(suite.tc, suite.federator, testrig.NewTestOauthServer(suite.db), testrig.NewTestMediaManager(&suite.state), &suite.state, suite.emailSender)
	suite.webfingerModule = webfinger.New(suite.processor)

	targetAccount := accountDomainAccount()
	if err := suite.db.Put(context.Background(), targetAccount); err != nil {
		panic(err)
	}

	// setup request
	host := config.GetHost()
	requestPath := fmt.Sprintf("/%s?resource=acct:%s@%s", webfinger.WebfingerBasePath, targetAccount.Username, host)

	recorder := httptest.NewRecorder()
	ctx, _ := testrig.CreateGinTestContext(recorder, nil)
	ctx.Request = httptest.NewRequest(http.MethodGet, requestPath, nil) // the endpoint we're hitting
	ctx.Request.Header.Set("accept", "application/json")

	// trigger the function being tested
	suite.webfingerModule.WebfingerGETRequest(ctx)

	// check response
	suite.EqualValues(http.StatusOK, recorder.Code)

	result := recorder.Result()
	defer result.Body.Close()
	b, err := ioutil.ReadAll(result.Body)
	suite.NoError(err)
	dst := new(bytes.Buffer)
	err = json.Indent(dst, b, "", "  ")
	suite.NoError(err)
	suite.Equal(`{
  "subject": "acct:aaaaa@example.org",
  "aliases": [
    "http://gts.example.org/users/aaaaa",
    "http://gts.example.org/@aaaaa"
  ],
  "links": [
    {
      "rel": "http://webfinger.net/rel/profile-page",
      "type": "text/html",
      "href": "http://gts.example.org/@aaaaa"
    },
    {
      "rel": "self",
      "type": "application/activity+json",
      "href": "http://gts.example.org/users/aaaaa"
    }
  ]
}`, dst.String())
}

func (suite *WebfingerGetTestSuite) TestFingerUserWithDifferentAccountDomainByAccountDomain() {
	config.SetHost("gts.example.org")
	config.SetAccountDomain("example.org")

	suite.processor = processing.NewProcessor(suite.tc, suite.federator, testrig.NewTestOauthServer(suite.db), testrig.NewTestMediaManager(&suite.state), &suite.state, suite.emailSender)
	suite.webfingerModule = webfinger.New(suite.processor)

	targetAccount := accountDomainAccount()
	if err := suite.db.Put(context.Background(), targetAccount); err != nil {
		panic(err)
	}

	// setup request
	accountDomain := config.GetAccountDomain()
	requestPath := fmt.Sprintf("/%s?resource=acct:%s@%s", webfinger.WebfingerBasePath, targetAccount.Username, accountDomain)

	recorder := httptest.NewRecorder()
	ctx, _ := testrig.CreateGinTestContext(recorder, nil)
	ctx.Request = httptest.NewRequest(http.MethodGet, requestPath, nil) // the endpoint we're hitting
	ctx.Request.Header.Set("accept", "application/json")

	// trigger the function being tested
	suite.webfingerModule.WebfingerGETRequest(ctx)

	// check response
	suite.EqualValues(http.StatusOK, recorder.Code)

	result := recorder.Result()
	defer result.Body.Close()
	b, err := ioutil.ReadAll(result.Body)
	suite.NoError(err)
	dst := new(bytes.Buffer)
	err = json.Indent(dst, b, "", "  ")
	suite.NoError(err)
	suite.Equal(`{
  "subject": "acct:aaaaa@example.org",
  "aliases": [
    "http://gts.example.org/users/aaaaa",
    "http://gts.example.org/@aaaaa"
  ],
  "links": [
    {
      "rel": "http://webfinger.net/rel/profile-page",
      "type": "text/html",
      "href": "http://gts.example.org/@aaaaa"
    },
    {
      "rel": "self",
      "type": "application/activity+json",
      "href": "http://gts.example.org/users/aaaaa"
    }
  ]
}`, dst.String())
}

func (suite *WebfingerGetTestSuite) TestFingerUserWithoutAcct() {
	targetAccount := suite.testAccounts["local_account_1"]

	// setup request -- leave out the 'acct:' prefix, which is prettymuch what pixelfed currently does
	host := config.GetHost()
	requestPath := fmt.Sprintf("/%s?resource=%s@%s", webfinger.WebfingerBasePath, targetAccount.Username, host)

	recorder := httptest.NewRecorder()
	ctx, _ := testrig.CreateGinTestContext(recorder, nil)
	ctx.Request = httptest.NewRequest(http.MethodGet, requestPath, nil) // the endpoint we're hitting
	ctx.Request.Header.Set("accept", "application/json")

	// trigger the function being tested
	suite.webfingerModule.WebfingerGETRequest(ctx)

	// check response
	suite.EqualValues(http.StatusOK, recorder.Code)

	result := recorder.Result()
	defer result.Body.Close()
	b, err := ioutil.ReadAll(result.Body)
	suite.NoError(err)
	dst := new(bytes.Buffer)
	err = json.Indent(dst, b, "", "  ")
	suite.NoError(err)
	suite.Equal(`{
  "subject": "acct:the_mighty_zork@localhost:8080",
  "aliases": [
    "http://localhost:8080/users/the_mighty_zork",
    "http://localhost:8080/@the_mighty_zork"
  ],
  "links": [
    {
      "rel": "http://webfinger.net/rel/profile-page",
      "type": "text/html",
      "href": "http://localhost:8080/@the_mighty_zork"
    },
    {
      "rel": "self",
      "type": "application/activity+json",
      "href": "http://localhost:8080/users/the_mighty_zork"
    }
  ]
}`, dst.String())
}

func TestWebfingerGetTestSuite(t *testing.T) {
	suite.Run(t, new(WebfingerGetTestSuite))
}