package domain

import (
	"context"

	"github.com/zitadel/zitadel/backend/v3/storage/database"
	"github.com/zitadel/zitadel/backend/v3/storage/eventstore"
)

type InvokeOpt func(*InvokeOpts)

func WithOrganizationRepo(repo OrganizationRepository) InvokeOpt {
	return func(opts *InvokeOpts) {
		opts.organizationRepo = repo
	}
}

func WithOrganizationDomainRepo(repo OrganizationDomainRepository) InvokeOpt {
	return func(opts *InvokeOpts) {
		opts.organizationDomainRepo = repo
	}
}

func WithProjectRepo(repo ProjectRepository) InvokeOpt {
	return func(opts *InvokeOpts) {
		opts.projectRepo = repo
	}
}

// WithQueryExecutor sets the database client to be used by the command.
// If not set, the default pool will be used.
// This is mainly used for testing.
func WithQueryExecutor(executor database.QueryExecutor) InvokeOpt {
	return func(opts *InvokeOpts) {
		opts.db = executor
	}
}

// WithLegacyEventstore sets the eventstore to be used by the command.
// If not set, the default one will be used.
// This is mainly used for testing.
func WithLegacyEventstore(es eventstore.LegacyEventstore) InvokeOpt {
	return func(opts *InvokeOpts) {
		opts.legacyEventstore = es
	}
}

// InvokeOpts are passed to each command
type InvokeOpts struct {
	// db is the database client.
	// [Executor]s MUST NOT access this field directly, use [InvokeOpts.DB] to access it.
	//
	// [Invoker]s may manipulate this field for example changing it to a transaction.
	// Its their responsibility to restore it after ending the transaction.
	db                     database.QueryExecutor
	legacyEventstore       eventstore.LegacyEventstore
	Invoker                Invoker
	Permissions            PermissionChecker
	organizationRepo       OrganizationRepository
	organizationDomainRepo OrganizationDomainRepository
	projectRepo            ProjectRepository
}

func (o *InvokeOpts) DB() database.QueryExecutor {
	if o.db != nil {
		return o.db
	}
	o.db = pool
	return o.db
}

func (o *InvokeOpts) LegacyEventstore() eventstore.LegacyEventstore {
	if o.legacyEventstore != nil {
		return o.legacyEventstore
	}
	o.legacyEventstore = legacyEventstore
	return o.legacyEventstore
}

func (o *InvokeOpts) Invoke(ctx context.Context, executor Executor) error {
	if o.Invoker == nil {
		return executor.Execute(ctx, o)
	}
	return o.Invoker.Invoke(ctx, executor, o)
}

func DefaultOpts(invoker Invoker) *InvokeOpts {
	if invoker == nil {
		invoker = &noopInvoker{}
	}
	return &InvokeOpts{
		Invoker:     invoker,
		Permissions: &noopPermissionChecker{}, // prevent panics for now
	}
}