package api_test

import (
	"context"
	"fmt"
	"net/http"
	"net/http/httptest"
	"net/url"
	"testing"
	"time"

	"github.com/franela/goblin"
	"github.com/gin-gonic/gin"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"

	"go.woodpecker-ci.org/woodpecker/v2/server"
	"go.woodpecker-ci.org/woodpecker/v2/server/api"
	mocks_forge "go.woodpecker-ci.org/woodpecker/v2/server/forge/mocks"
	forge_types "go.woodpecker-ci.org/woodpecker/v2/server/forge/types"
	"go.woodpecker-ci.org/woodpecker/v2/server/model"
	mocks_services "go.woodpecker-ci.org/woodpecker/v2/server/services/mocks"
	"go.woodpecker-ci.org/woodpecker/v2/server/services/permissions"
	mocks_store "go.woodpecker-ci.org/woodpecker/v2/server/store/mocks"
	"go.woodpecker-ci.org/woodpecker/v2/server/store/types"
	"go.woodpecker-ci.org/woodpecker/v2/shared/token"
)

func TestHandleAuth(t *testing.T) {
	gin.SetMode(gin.TestMode)

	g := goblin.Goblin(t)
	g.Describe("Login", func() {
		user := &model.User{
			ID:            1,
			OrgID:         1,
			ForgeID:       1,
			ForgeRemoteID: "remote-id-1",
			Login:         "test",
			Email:         "test@example.com",
			Admin:         false,
		}
		org := &model.Org{
			ID:   1,
			Name: user.Login,
		}

		server.Config.Server.SessionExpires = time.Hour

		g.It("should handle errors from the callback", func() {
			w := httptest.NewRecorder()
			c, _ := gin.CreateTestContext(w)

			query := url.Values{}
			query.Set("error", "invalid_scope")
			query.Set("error_description", "The requested scope is invalid, unknown, or malformed")
			query.Set("error_uri", "https://developer.atlassian.com/cloud/jira/platform/rest/#api-group-OAuth2-ErrorHandling")

			c.Request = &http.Request{
				Header: make(http.Header),
				Method: http.MethodGet,
				URL: &url.URL{
					Scheme:   "https",
					Path:     "/authorize",
					RawQuery: query.Encode(),
				},
			}

			api.HandleAuth(c)

			assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
			assert.Equal(g, fmt.Sprintf("/login?%s", query.Encode()), c.Writer.Header().Get("Location"))
		})

		g.It("should fail if the state is wrong", func() {
			_manager := mocks_services.NewManager(t)
			_store := mocks_store.NewStore(t)
			server.Config.Services.Manager = _manager
			server.Config.Permissions.Open = true
			server.Config.Permissions.Orgs = permissions.NewOrgs(nil)
			server.Config.Permissions.Admins = permissions.NewAdmins(nil)
			w := httptest.NewRecorder()
			c, _ := gin.CreateTestContext(w)
			c.Set("store", _store)

			query := url.Values{}
			query.Set("code", "assumed_to_be_valid_code")

			wrongToken := token.New(token.OAuthStateToken)
			wrongToken.Set("forge_id", "1")
			signedWrongToken, _ := wrongToken.Sign("wrong_secret")
			query.Set("state", signedWrongToken)

			c.Request = &http.Request{
				Header: make(http.Header),
				URL: &url.URL{
					Scheme:   "https",
					RawQuery: query.Encode(),
				},
			}

			api.HandleAuth(c)

			assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
			assert.Equal(g, "/login?error=invalid_state", c.Writer.Header().Get("Location"))
		})

		g.It("should redirect to forge login page", func() {
			_manager := mocks_services.NewManager(t)
			_forge := mocks_forge.NewForge(t)
			_store := mocks_store.NewStore(t)
			server.Config.Services.Manager = _manager
			server.Config.Permissions.Open = true
			server.Config.Permissions.Orgs = permissions.NewOrgs(nil)
			server.Config.Permissions.Admins = permissions.NewAdmins(nil)
			w := httptest.NewRecorder()
			c, _ := gin.CreateTestContext(w)
			c.Set("store", _store)
			c.Request = &http.Request{
				Header: make(http.Header),
				URL: &url.URL{
					Scheme: "https",
				},
			}

			_manager.On("ForgeByID", int64(1)).Return(_forge, nil)

			forgeRedirectURL := ""
			_forge.On("Login", mock.Anything, mock.Anything).Run(func(args mock.Arguments) {
				state, ok := args.Get(1).(*forge_types.OAuthRequest)
				if ok {
					forgeRedirectURL = fmt.Sprintf("https://my-awesome-forge.com/oauth/authorize?client_id=client-id&state=%s", state.State)
				}
			}).Return(nil, func(context.Context, *forge_types.OAuthRequest) string {
				return forgeRedirectURL
			}, nil)

			api.HandleAuth(c)

			assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
			assert.Equal(g, forgeRedirectURL, c.Writer.Header().Get("Location"))
		})

		g.It("should register a new user", func() {
			_manager := mocks_services.NewManager(t)
			_forge := mocks_forge.NewForge(t)
			_store := mocks_store.NewStore(t)
			server.Config.Services.Manager = _manager
			server.Config.Permissions.Open = true
			server.Config.Permissions.Orgs = permissions.NewOrgs(nil)
			server.Config.Permissions.Admins = permissions.NewAdmins(nil)
			w := httptest.NewRecorder()
			c, _ := gin.CreateTestContext(w)
			c.Set("store", _store)
			c.Request = &http.Request{
				Header: make(http.Header),
				URL: &url.URL{
					Scheme: "https",
				},
			}

			_manager.On("ForgeByID", int64(1)).Return(_forge, nil)
			_forge.On("Login", mock.Anything, mock.Anything).Return(user, "", nil)
			_store.On("GetUserRemoteID", user.ForgeRemoteID, user.Login).Return(nil, types.RecordNotExist)
			_store.On("CreateUser", mock.Anything).Return(nil)
			_store.On("OrgFindByName", user.Login).Return(nil, nil)
			_store.On("OrgCreate", mock.Anything).Return(nil)
			_store.On("UpdateUser", mock.Anything).Return(nil)
			_forge.On("Repos", mock.Anything, mock.Anything).Return(nil, nil)

			api.HandleAuth(c)

			assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
			assert.Equal(g, "/", c.Writer.Header().Get("Location"))
			assert.NotEmpty(g, c.Writer.Header().Get("Set-Cookie"))
		})

		g.It("should login an existing user", func() {
			_manager := mocks_services.NewManager(t)
			_forge := mocks_forge.NewForge(t)
			_store := mocks_store.NewStore(t)
			server.Config.Services.Manager = _manager
			server.Config.Permissions.Open = true
			server.Config.Permissions.Orgs = permissions.NewOrgs(nil)
			server.Config.Permissions.Admins = permissions.NewAdmins(nil)
			w := httptest.NewRecorder()
			c, _ := gin.CreateTestContext(w)
			c.Set("store", _store)
			c.Request = &http.Request{
				Header: make(http.Header),
				URL: &url.URL{
					Scheme: "https",
				},
			}

			_manager.On("ForgeByID", int64(1)).Return(_forge, nil)
			_forge.On("Login", mock.Anything, mock.Anything).Return(user, "", nil)
			_store.On("GetUserRemoteID", user.ForgeRemoteID, user.Login).Return(user, nil)
			_store.On("OrgGet", org.ID).Return(org, nil)
			_store.On("UpdateUser", mock.Anything).Return(nil)
			_forge.On("Repos", mock.Anything, mock.Anything).Return(nil, nil)

			api.HandleAuth(c)

			assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
			assert.Equal(g, "/", c.Writer.Header().Get("Location"))
			assert.NotEmpty(g, c.Writer.Header().Get("Set-Cookie"))
		})

		g.It("should deny a new user if registration is closed", func() {
			_manager := mocks_services.NewManager(t)
			_forge := mocks_forge.NewForge(t)
			_store := mocks_store.NewStore(t)
			server.Config.Services.Manager = _manager
			server.Config.Permissions.Open = false
			server.Config.Permissions.Orgs = permissions.NewOrgs(nil)
			server.Config.Permissions.Admins = permissions.NewAdmins(nil)
			w := httptest.NewRecorder()
			c, _ := gin.CreateTestContext(w)
			c.Set("store", _store)
			c.Request = &http.Request{
				Header: make(http.Header),
				URL: &url.URL{
					Scheme: "https",
				},
			}

			_manager.On("ForgeByID", int64(1)).Return(_forge, nil)
			_forge.On("Login", mock.Anything, mock.Anything).Return(user, "", nil)
			_store.On("GetUserRemoteID", user.ForgeRemoteID, user.Login).Return(nil, types.RecordNotExist)

			api.HandleAuth(c)

			assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
			assert.Equal(g, "/login?error=registration_closed", c.Writer.Header().Get("Location"))
		})

		g.It("should deny a user with missing org access", func() {
			_manager := mocks_services.NewManager(t)
			_forge := mocks_forge.NewForge(t)
			_store := mocks_store.NewStore(t)
			server.Config.Services.Manager = _manager
			server.Config.Permissions.Open = true
			server.Config.Permissions.Orgs = permissions.NewOrgs([]string{"org1"})
			server.Config.Permissions.Admins = permissions.NewAdmins(nil)
			w := httptest.NewRecorder()
			c, _ := gin.CreateTestContext(w)
			c.Set("store", _store)
			c.Request = &http.Request{
				Header: make(http.Header),
				URL: &url.URL{
					Scheme: "https",
				},
			}

			_manager.On("ForgeByID", int64(1)).Return(_forge, nil)
			_forge.On("Login", mock.Anything, mock.Anything).Return(user, "", nil)
			_forge.On("Teams", mock.Anything, user).Return([]*model.Team{
				{
					Login: "org2",
				},
			}, nil)

			api.HandleAuth(c)

			assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
			assert.Equal(g, "/login?error=org_access_denied", c.Writer.Header().Get("Location"))
		})

		g.Describe("User org", func() {
			g.It("should be created if it does not exists", func() {
				_manager := mocks_services.NewManager(t)
				_forge := mocks_forge.NewForge(t)
				_store := mocks_store.NewStore(t)
				server.Config.Services.Manager = _manager
				server.Config.Permissions.Open = true
				server.Config.Permissions.Orgs = permissions.NewOrgs(nil)
				server.Config.Permissions.Admins = permissions.NewAdmins(nil)
				w := httptest.NewRecorder()
				c, _ := gin.CreateTestContext(w)
				c.Set("store", _store)
				c.Request = &http.Request{
					Header: make(http.Header),
					URL: &url.URL{
						Scheme: "https",
					},
				}
				user.OrgID = 0

				_manager.On("ForgeByID", int64(1)).Return(_forge, nil)
				_forge.On("Login", mock.Anything, mock.Anything).Return(user, "", nil)
				_store.On("GetUserRemoteID", user.ForgeRemoteID, user.Login).Return(user, nil)
				_store.On("OrgFindByName", user.Login).Return(nil, types.RecordNotExist)
				_store.On("OrgCreate", mock.Anything).Return(nil)
				_store.On("UpdateUser", mock.Anything).Return(nil)
				_forge.On("Repos", mock.Anything, mock.Anything).Return(nil, nil)

				api.HandleAuth(c)

				assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
				assert.Equal(g, "/", c.Writer.Header().Get("Location"))
				assert.NotEmpty(g, c.Writer.Header().Get("Set-Cookie"))
			})

			g.It("should be linked if it has the same name as the user", func() {
				_manager := mocks_services.NewManager(t)
				_forge := mocks_forge.NewForge(t)
				_store := mocks_store.NewStore(t)
				server.Config.Services.Manager = _manager
				server.Config.Permissions.Open = true
				server.Config.Permissions.Orgs = permissions.NewOrgs(nil)
				server.Config.Permissions.Admins = permissions.NewAdmins(nil)
				w := httptest.NewRecorder()
				c, _ := gin.CreateTestContext(w)
				c.Set("store", _store)
				c.Request = &http.Request{
					Header: make(http.Header),
					URL: &url.URL{
						Scheme: "https",
					},
				}
				user.OrgID = 0

				_manager.On("ForgeByID", int64(1)).Return(_forge, nil)
				_forge.On("Login", mock.Anything, mock.Anything).Return(user, "", nil)
				_store.On("GetUserRemoteID", user.ForgeRemoteID, user.Login).Return(user, nil)
				_store.On("OrgFindByName", user.Login).Return(org, nil)
				_store.On("OrgUpdate", mock.Anything).Return(nil)
				_store.On("UpdateUser", mock.Anything).Return(nil)
				_forge.On("Repos", mock.Anything, mock.Anything).Return(nil, nil)

				api.HandleAuth(c)

				assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
				assert.Equal(g, "/", c.Writer.Header().Get("Location"))
				assert.NotEmpty(g, c.Writer.Header().Get("Set-Cookie"))
			})

			g.It("should be updated if the user name was changed", func() {
				_manager := mocks_services.NewManager(t)
				_forge := mocks_forge.NewForge(t)
				_store := mocks_store.NewStore(t)
				server.Config.Services.Manager = _manager
				server.Config.Permissions.Open = true
				server.Config.Permissions.Orgs = permissions.NewOrgs(nil)
				server.Config.Permissions.Admins = permissions.NewAdmins(nil)
				w := httptest.NewRecorder()
				c, _ := gin.CreateTestContext(w)
				c.Set("store", _store)
				c.Request = &http.Request{
					Header: make(http.Header),
					URL: &url.URL{
						Scheme: "https",
					},
				}
				org.Name = "not-the-user-name"

				_manager.On("ForgeByID", int64(1)).Return(_forge, nil)
				_forge.On("Login", mock.Anything, mock.Anything).Return(user, "", nil)
				_store.On("GetUserRemoteID", user.ForgeRemoteID, user.Login).Return(user, nil)
				_store.On("OrgGet", user.OrgID).Return(org, nil)
				_store.On("OrgUpdate", mock.Anything).Return(nil)
				_store.On("UpdateUser", mock.Anything).Return(nil)
				_forge.On("Repos", mock.Anything, mock.Anything).Return(nil, nil)

				api.HandleAuth(c)

				assert.Equal(g, http.StatusSeeOther, c.Writer.Status())
				assert.Equal(g, "/", c.Writer.Header().Get("Location"))
				assert.NotEmpty(g, c.Writer.Header().Get("Set-Cookie"))
			})
		})
	})
}