go-rel/gin-example

package todos

import (
    "context"

    "github.com/go-rel/gin-example/scores"
    "github.com/go-rel/rel"
    "go.uber.org/zap"
)

var (
    logger, _ = zap.NewProduction(zap.Fields(zap.String("type", "todos")))
)

//go:generate mockery --name=Service --case=underscore --output todostest --outpkg todostest

// Service instance for todo's domain.
// Any operation done to any of object within this domain should use this service.
type Service interface {
    Search(ctx context.Context, todos *[]Todo, filter Filter) error
    Create(ctx context.Context, todo *Todo) error
    Update(ctx context.Context, todo *Todo, changes rel.Changeset) error
    Delete(ctx context.Context, todo *Todo)
    Clear(ctx context.Context)
}

// beside embeding the struct, you can also declare the function directly on this struct.
// the advantage of embedding the struct is it allows spreading the implementation across multiple files.
type service struct {
    search
    create
    update
    delete
    clear
}

var _ Service = (*service)(nil)

// New Todos service.
func New(repository rel.Repository, scores scores.Service) Service {
    return service{
        search: search{repository: repository},
        create: create{repository: repository, scores: scores},
        update: update{repository: repository, scores: scores},
        delete: delete{repository: repository},
        clear:  clear{repository: repository},
    }
}