package projection

import (
	"context"
	"testing"

	"golang.org/x/text/language"

	"github.com/zitadel/zitadel/internal/database"
	"github.com/zitadel/zitadel/internal/domain"
	"github.com/zitadel/zitadel/internal/errors"
	"github.com/zitadel/zitadel/internal/eventstore"
	"github.com/zitadel/zitadel/internal/eventstore/handler"
	"github.com/zitadel/zitadel/internal/eventstore/handler/crdb"
	"github.com/zitadel/zitadel/internal/eventstore/repository"
	"github.com/zitadel/zitadel/internal/repository/instance"
	"github.com/zitadel/zitadel/internal/repository/org"
	"github.com/zitadel/zitadel/internal/repository/project"
	"github.com/zitadel/zitadel/internal/repository/user"
	"github.com/zitadel/zitadel/internal/repository/usergrant"
)

func TestUserGrantProjection_reduces(t *testing.T) {
	type args struct {
		event func(t *testing.T) eventstore.Event
	}
	tests := []struct {
		name   string
		args   args
		reduce func(event eventstore.Event) (*handler.Statement, error)
		want   wantReduce
	}{
		{
			name: "reduceAdded",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(usergrant.UserGrantAddedType),
					usergrant.AggregateType,
					[]byte(`{
						"userId": "user-id",
						"projectId": "project-id",
						"roleKeys": ["role"]
					}`),
				), usergrant.UserGrantAddedEventMapper),
			},
			reduce: (&userGrantProjection{
				StatementHandler: getStatementHandlerWithFilters(
					user.NewHumanAddedEvent(context.Background(),
						&user.NewAggregate("user-id", "org1").Aggregate,
						"username1",
						"firstname1",
						"lastname1",
						"nickname1",
						"displayname1",
						language.German,
						domain.GenderMale,
						"email1",
						true,
					),
					project.NewProjectAddedEvent(context.Background(),
						&project.NewAggregate("project-id", "org2").Aggregate,
						"project",
						false,
						false,
						false,
						domain.PrivateLabelingSettingUnspecified,
					),
				)(t)}).reduceAdded,
			want: wantReduce{
				aggregateType:    usergrant.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "INSERT INTO projections.user_grants3 (id, resource_owner, instance_id, creation_date, change_date, sequence, user_id, resource_owner_user, project_id, resource_owner_project, grant_id, granted_org, roles, state) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14)",
							expectedArgs: []interface{}{
								"agg-id",
								"ro-id",
								"instance-id",
								anyArg{},
								anyArg{},
								uint64(15),
								"user-id",
								"org1",
								"project-id",
								"org2",
								"",
								"",
								database.StringArray{"role"},
								domain.UserGrantStateActive,
							},
						},
					},
				},
			},
		},
		{
			name: "reduceAdded with projectgrant",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(usergrant.UserGrantAddedType),
					usergrant.AggregateType,
					[]byte(`{
						"userId": "user-id",
						"projectId": "project-id",
                        "grantId": "grant-id",
						"roleKeys": ["role"]
					}`),
				), usergrant.UserGrantAddedEventMapper),
			},
			reduce: (&userGrantProjection{
				StatementHandler: getStatementHandlerWithFilters(
					user.NewHumanAddedEvent(context.Background(),
						&user.NewAggregate("user-id", "org1").Aggregate,
						"username1",
						"firstname1",
						"lastname1",
						"nickname1",
						"displayname1",
						language.German,
						domain.GenderMale,
						"email1",
						true,
					),
					project.NewGrantAddedEvent(context.Background(),
						&project.NewAggregate("project-id", "org2").Aggregate,
						"grant-id",
						"org3",
						[]string{},
					),
				)(t)}).reduceAdded,
			want: wantReduce{
				aggregateType:    usergrant.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "INSERT INTO projections.user_grants3 (id, resource_owner, instance_id, creation_date, change_date, sequence, user_id, resource_owner_user, project_id, resource_owner_project, grant_id, granted_org, roles, state) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14)",
							expectedArgs: []interface{}{
								"agg-id",
								"ro-id",
								"instance-id",
								anyArg{},
								anyArg{},
								uint64(15),
								"user-id",
								"org1",
								"project-id",
								"",
								"grant-id",
								"org3",
								database.StringArray{"role"},
								domain.UserGrantStateActive,
							},
						},
					},
				},
			},
		},
		{
			name: "reduceChanged",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(usergrant.UserGrantChangedType),
					usergrant.AggregateType,
					[]byte(`{
						"roleKeys": ["role"]
					}`),
				), usergrant.UserGrantChangedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceChanged,
			want: wantReduce{
				aggregateType:    usergrant.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "UPDATE projections.user_grants3 SET (change_date, roles, sequence) = ($1, $2, $3) WHERE (id = $4) AND (instance_id = $5)",
							expectedArgs: []interface{}{
								anyArg{},
								database.StringArray{"role"},
								uint64(15),
								"agg-id",
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceCascadeChanged",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(usergrant.UserGrantCascadeChangedType),
					usergrant.AggregateType,
					[]byte(`{
						"roleKeys": ["role"]
					}`),
				), usergrant.UserGrantCascadeChangedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceChanged,
			want: wantReduce{
				aggregateType:    usergrant.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "UPDATE projections.user_grants3 SET (change_date, roles, sequence) = ($1, $2, $3) WHERE (id = $4) AND (instance_id = $5)",
							expectedArgs: []interface{}{
								anyArg{},
								database.StringArray{"role"},
								uint64(15),
								"agg-id",
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceRemoved",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(usergrant.UserGrantRemovedType),
					usergrant.AggregateType,
					nil,
				), usergrant.UserGrantRemovedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceRemoved,
			want: wantReduce{
				aggregateType:    usergrant.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "DELETE FROM projections.user_grants3 WHERE (id = $1) AND (instance_id = $2)",
							expectedArgs: []interface{}{
								anyArg{},
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "instance reduceInstanceRemoved",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(instance.InstanceRemovedEventType),
					instance.AggregateType,
					nil,
				), instance.InstanceRemovedEventMapper),
			},
			reduce: reduceInstanceRemovedHelper(UserGrantInstanceID),
			want: wantReduce{
				aggregateType:    eventstore.AggregateType("instance"),
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "DELETE FROM projections.user_grants3 WHERE (instance_id = $1)",
							expectedArgs: []interface{}{
								"agg-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceCascadeRemoved",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(usergrant.UserGrantCascadeRemovedType),
					usergrant.AggregateType,
					nil,
				), usergrant.UserGrantCascadeRemovedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceRemoved,
			want: wantReduce{
				aggregateType:    usergrant.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "DELETE FROM projections.user_grants3 WHERE (id = $1) AND (instance_id = $2)",
							expectedArgs: []interface{}{
								anyArg{},
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceDeactivated",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(usergrant.UserGrantDeactivatedType),
					usergrant.AggregateType,
					nil,
				), usergrant.UserGrantDeactivatedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceDeactivated,
			want: wantReduce{
				aggregateType:    usergrant.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "UPDATE projections.user_grants3 SET (change_date, state, sequence) = ($1, $2, $3) WHERE (id = $4) AND (instance_id = $5)",
							expectedArgs: []interface{}{
								anyArg{},
								domain.UserGrantStateInactive,
								uint64(15),
								"agg-id",
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceReactivated",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(usergrant.UserGrantReactivatedType),
					usergrant.AggregateType,
					nil,
				), usergrant.UserGrantDeactivatedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceReactivated,
			want: wantReduce{
				aggregateType:    usergrant.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "UPDATE projections.user_grants3 SET (change_date, state, sequence) = ($1, $2, $3) WHERE (id = $4) AND (instance_id = $5)",
							expectedArgs: []interface{}{
								anyArg{},
								domain.UserGrantStateActive,
								uint64(15),
								"agg-id",
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceUserRemoved",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(user.UserRemovedType),
					user.AggregateType,
					nil,
				), user.UserRemovedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceUserRemoved,
			want: wantReduce{
				aggregateType:    user.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "DELETE FROM projections.user_grants3 WHERE (user_id = $1) AND (instance_id = $2)",
							expectedArgs: []interface{}{
								anyArg{},
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceProjectRemoved",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(project.ProjectRemovedType),
					project.AggregateType,
					nil,
				), project.ProjectRemovedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceProjectRemoved,
			want: wantReduce{
				aggregateType:    project.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "DELETE FROM projections.user_grants3 WHERE (project_id = $1) AND (instance_id = $2)",
							expectedArgs: []interface{}{
								anyArg{},
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceProjectGrantRemoved",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(project.GrantRemovedType),
					project.AggregateType,
					[]byte(`{"grantId": "grantID"}`),
				), project.GrantRemovedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceProjectGrantRemoved,
			want: wantReduce{
				aggregateType:    project.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "DELETE FROM projections.user_grants3 WHERE (grant_id = $1) AND (instance_id = $2)",
							expectedArgs: []interface{}{
								"grantID",
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceRoleRemoved",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(project.RoleRemovedType),
					project.AggregateType,
					[]byte(`{"key": "key"}`),
				), project.RoleRemovedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceRoleRemoved,
			want: wantReduce{
				aggregateType:    project.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "UPDATE projections.user_grants3 SET roles = array_remove(roles, $1) WHERE (project_id = $2) AND (instance_id = $3)",
							expectedArgs: []interface{}{
								"key",
								"agg-id",
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name: "reduceProjectGrantChanged",
			args: args{
				event: getEvent(testEvent(
					repository.EventType(project.GrantChangedType),
					project.AggregateType,
					[]byte(`{"grantId": "grantID", "roleKeys": ["key"]}`),
				), project.GrantChangedEventMapper),
			},
			reduce: (&userGrantProjection{}).reduceProjectGrantChanged,
			want: wantReduce{
				aggregateType:    project.AggregateType,
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "UPDATE projections.user_grants3 SET (roles) = (SELECT ARRAY( SELECT UNNEST(roles) INTERSECT SELECT UNNEST ($1::TEXT[]))) WHERE (grant_id = $2) AND (instance_id = $3)",
							expectedArgs: []interface{}{
								database.StringArray{"key"},
								"grantID",
								"instance-id",
							},
						},
					},
				},
			},
		},
		{
			name:   "org.reduceOwnerRemoved",
			reduce: (&userGrantProjection{}).reduceOwnerRemoved,
			args: args{
				event: getEvent(testEvent(
					repository.EventType(org.OrgRemovedEventType),
					org.AggregateType,
					nil,
				), org.OrgRemovedEventMapper),
			},
			want: wantReduce{
				aggregateType:    eventstore.AggregateType("org"),
				sequence:         15,
				previousSequence: 10,
				executer: &testExecuter{
					executions: []execution{
						{
							expectedStmt: "UPDATE projections.user_grants3 SET (change_date, sequence, owner_removed) = ($1, $2, $3) WHERE (instance_id = $4) AND (resource_owner = $5)",
							expectedArgs: []interface{}{
								anyArg{},
								uint64(15),
								true,
								"instance-id",
								"agg-id",
							},
						},
						{
							expectedStmt: "UPDATE projections.user_grants3 SET (change_date, sequence, user_owner_removed) = ($1, $2, $3) WHERE (instance_id = $4) AND (resource_owner_user = $5)",
							expectedArgs: []interface{}{
								anyArg{},
								uint64(15),
								true,
								"instance-id",
								"agg-id",
							},
						},
						{
							expectedStmt: "UPDATE projections.user_grants3 SET (change_date, sequence, project_owner_removed) = ($1, $2, $3) WHERE (instance_id = $4) AND (resource_owner_project = $5)",
							expectedArgs: []interface{}{
								anyArg{},
								uint64(15),
								true,
								"instance-id",
								"agg-id",
							},
						},
						{
							expectedStmt: "UPDATE projections.user_grants3 SET (change_date, sequence, granted_org_removed) = ($1, $2, $3) WHERE (instance_id = $4) AND (granted_org = $5)",
							expectedArgs: []interface{}{
								anyArg{},
								uint64(15),
								true,
								"instance-id",
								"agg-id",
							},
						},
					},
				},
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			event := baseEvent(t)
			got, err := tt.reduce(event)
			if _, ok := err.(errors.InvalidArgument); !ok {
				t.Errorf("no wrong event mapping: %v, got: %v", err, got)
			}

			event = tt.args.event(t)
			got, err = tt.reduce(event)
			assertReduce(t, got, err, UserGrantProjectionTable, tt.want)
		})
	}
}

func getStatementHandlerWithFilters(events ...eventstore.Command) func(t *testing.T) crdb.StatementHandler {
	filters := make([]expect, 0)
	for _, event := range events {
		filters = append(filters,
			expectFilter(
				eventFromEventPusher(
					event,
				),
			),
		)
	}

	return func(t *testing.T) crdb.StatementHandler {
		return crdb.StatementHandler{
			ProjectionHandler: &handler.ProjectionHandler{
				Handler: handler.Handler{
					Eventstore: eventstoreExpect(
						t,
						filters...,
					),
				},
			},
		}
	}
}