// Vikunja is a to-do list application to facilitate your life.
// Copyright 2018-2021 Vikunja and contributors. All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public Licensee 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 Licensee for more details.
//
// You should have received a copy of the GNU Affero General Public Licensee
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package models

import (
	"testing"

	"code.vikunja.io/api/pkg/db"
	"code.vikunja.io/api/pkg/user"
	"github.com/stretchr/testify/assert"
)

func TestNamespace_Create(t *testing.T) {

	// Dummy namespace
	dummynamespace := Namespace{
		Title:       "Test",
		Description: "Lorem Ipsum",
	}

	user1 := &user.User{ID: 1}

	t.Run("normal", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		err := dummynamespace.Create(s, user1)
		assert.NoError(t, err)
		err = s.Commit()
		assert.NoError(t, err)

		db.AssertExists(t, "namespaces", map[string]interface{}{
			"title":       "Test",
			"description": "Lorem Ipsum",
		}, false)
	})
	t.Run("no title", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		n2 := Namespace{}
		err := n2.Create(s, user1)
		assert.Error(t, err)
		assert.True(t, IsErrNamespaceNameCannotBeEmpty(err))
		_ = s.Close()
	})
	t.Run("nonexistant user", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		nUser := &user.User{ID: 9482385}
		dnsp2 := dummynamespace
		err := dnsp2.Create(s, nUser)
		assert.Error(t, err)
		assert.True(t, user.IsErrUserDoesNotExist(err))
		_ = s.Close()
	})
}

func TestNamespace_ReadOne(t *testing.T) {
	u := &user.User{ID: 1}

	t.Run("normal", func(t *testing.T) {
		n := &Namespace{ID: 1}
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		err := n.ReadOne(s, u)
		assert.NoError(t, err)
		assert.Equal(t, n.Title, "testnamespace")
	})
	t.Run("nonexistant", func(t *testing.T) {
		n := &Namespace{ID: 99999}
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		err := n.ReadOne(s, u)
		assert.Error(t, err)
		assert.True(t, IsErrNamespaceDoesNotExist(err))
	})
	t.Run("with subscription", func(t *testing.T) {
		n := &Namespace{ID: 8}
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		err := n.ReadOne(s, &user.User{ID: 6})
		assert.NoError(t, err)
		assert.NotNil(t, n.Subscription)
	})
}

func TestNamespace_Update(t *testing.T) {
	u := &user.User{ID: 1}

	t.Run("normal", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		n := &Namespace{
			ID:    1,
			Title: "Lorem Ipsum",
		}
		err := n.Update(s, u)
		assert.NoError(t, err)
		err = s.Commit()
		assert.NoError(t, err)

		db.AssertExists(t, "namespaces", map[string]interface{}{
			"id":    1,
			"title": "Lorem Ipsum",
		}, false)
	})
	t.Run("nonexisting", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		n := &Namespace{
			ID:    99999,
			Title: "Lorem Ipsum",
		}
		err := n.Update(s, u)
		assert.Error(t, err)
		assert.True(t, IsErrNamespaceDoesNotExist(err))
		_ = s.Close()
	})
	t.Run("nonexisting owner", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		n := &Namespace{
			ID:    1,
			Title: "Lorem Ipsum",
			Owner: &user.User{ID: 99999},
		}
		err := n.Update(s, u)
		assert.Error(t, err)
		assert.True(t, user.IsErrUserDoesNotExist(err))
		_ = s.Close()
	})
	t.Run("no title", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		n := &Namespace{
			ID: 1,
		}
		err := n.Update(s, u)
		assert.Error(t, err)
		assert.True(t, IsErrNamespaceNameCannotBeEmpty(err))
		_ = s.Close()
	})
}

func TestNamespace_Delete(t *testing.T) {
	u := &user.User{ID: 1}

	t.Run("normal", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		n := &Namespace{
			ID: 1,
		}
		err := n.Delete(s, u)
		assert.NoError(t, err)
		err = s.Commit()
		assert.NoError(t, err)

		db.AssertMissing(t, "namespaces", map[string]interface{}{
			"id": 1,
		})
	})
	t.Run("nonexisting", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		n := &Namespace{
			ID: 9999,
		}
		err := n.Delete(s, u)
		assert.Error(t, err)
		assert.True(t, IsErrNamespaceDoesNotExist(err))
		_ = s.Close()
	})
}

func TestNamespace_ReadAll(t *testing.T) {
	user1 := &user.User{ID: 1}
	user6 := &user.User{ID: 6}
	user7 := &user.User{ID: 7}
	user11 := &user.User{ID: 11}
	user12 := &user.User{ID: 12}

	t.Run("normal", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{}
		nn, _, _, err := n.ReadAll(s, user1, "", 1, -1)
		assert.NoError(t, err)
		namespaces := nn.([]*NamespaceWithLists)
		assert.NotNil(t, namespaces)
		assert.Len(t, namespaces, 11)                // Total of 11 including shared, favorites and saved filters
		assert.Equal(t, int64(-3), namespaces[0].ID) // The first one should be the one with saved filters
		assert.Equal(t, int64(-2), namespaces[1].ID) // The second one should be the one with favorites
		assert.Equal(t, int64(-1), namespaces[2].ID) // The third one should be the one with the shared namespaces
		// Ensure every list and namespace are not archived
		for _, namespace := range namespaces {
			assert.False(t, namespace.IsArchived)
			for _, list := range namespace.Lists {
				assert.False(t, list.IsArchived)
			}
		}
	})
	t.Run("no own shared lists", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{}
		nn, _, _, err := n.ReadAll(s, user6, "", 1, -1)
		assert.NoError(t, err)
		namespaces := nn.([]*NamespaceWithLists)
		assert.NotNil(t, namespaces)
		assert.Equal(t, int64(-1), namespaces[1].ID) // The third one should be the one with the shared namespaces

		sharedListOccurences := make(map[int64]int64)
		for _, list := range namespaces[1].Lists {
			assert.NotEqual(t, user1.ID, list.OwnerID)
			sharedListOccurences[list.ID]++
		}

		for listID, occ := range sharedListOccurences {
			assert.Equal(t, int64(1), occ, "shared list %d is present %d times, should be 1", listID, occ)
		}
	})
	t.Run("namespaces only", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{
			NamespacesOnly: true,
		}
		nn, _, _, err := n.ReadAll(s, user1, "", 1, -1)
		assert.NoError(t, err)
		namespaces := nn.([]*NamespaceWithLists)
		assert.NotNil(t, namespaces)
		assert.Len(t, namespaces, 8) // Total of 8 - excluding shared, favorites and saved filters (normally 11)
		// Ensure every namespace does not contain lists
		for _, namespace := range namespaces {
			assert.Nil(t, namespace.Lists)
		}
	})
	t.Run("ids only", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{
			NamespacesOnly: true,
		}
		nn, _, _, err := n.ReadAll(s, user7, "13,14", 1, -1)
		assert.NoError(t, err)
		namespaces := nn.([]*NamespaceWithLists)
		assert.NotNil(t, namespaces)
		assert.Len(t, namespaces, 2)
		assert.Equal(t, int64(13), namespaces[0].ID)
		assert.Equal(t, int64(14), namespaces[1].ID)
	})
	t.Run("ids only but ids with other people's namespace", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{
			NamespacesOnly: true,
		}
		nn, _, _, err := n.ReadAll(s, user1, "1,w", 1, -1)
		assert.NoError(t, err)
		namespaces := nn.([]*NamespaceWithLists)
		assert.NotNil(t, namespaces)
		assert.Len(t, namespaces, 1)
		assert.Equal(t, int64(1), namespaces[0].ID)
	})
	t.Run("archived", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{
			IsArchived: true,
		}
		nn, _, _, err := n.ReadAll(s, user1, "", 1, -1)
		namespaces := nn.([]*NamespaceWithLists)
		assert.NoError(t, err)
		assert.NotNil(t, namespaces)
		assert.Len(t, namespaces, 12)                // Total of 12 including shared & favorites, one is archived
		assert.Equal(t, int64(-3), namespaces[0].ID) // The first one should be the one with shared filters
		assert.Equal(t, int64(-2), namespaces[1].ID) // The second one should be the one with favorites
		assert.Equal(t, int64(-1), namespaces[2].ID) // The third one should be the one with the shared namespaces
	})
	t.Run("no favorites", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{}
		nn, _, _, err := n.ReadAll(s, user11, "", 1, -1)
		namespaces := nn.([]*NamespaceWithLists)
		assert.NoError(t, err)
		// Assert the first namespace is not the favorites namespace
		assert.NotEqual(t, FavoritesPseudoNamespace.ID, namespaces[0].ID)
	})
	t.Run("no favorite tasks but namespace", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{}
		nn, _, _, err := n.ReadAll(s, user12, "", 1, -1)
		namespaces := nn.([]*NamespaceWithLists)
		assert.NoError(t, err)
		// Assert the first namespace is the favorites namespace and contains lists
		assert.Equal(t, FavoritesPseudoNamespace.ID, namespaces[0].ID)
		assert.NotEqual(t, 0, namespaces[0].Lists)
	})
	t.Run("no saved filters", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{}
		nn, _, _, err := n.ReadAll(s, user11, "", 1, -1)
		namespaces := nn.([]*NamespaceWithLists)
		assert.NoError(t, err)
		// Assert the first namespace is not the favorites namespace
		assert.NotEqual(t, SavedFiltersPseudoNamespace.ID, namespaces[0].ID)
	})
	t.Run("no results", func(t *testing.T) {
		db.LoadAndAssertFixtures(t)
		s := db.NewSession()
		defer s.Close()

		n := &Namespace{}
		nn, _, _, err := n.ReadAll(s, user1, "some search string which will never return results", 1, -1)
		assert.NoError(t, err)
		assert.Nil(t, nn)
	})
}