package database

import "time"

// Tools

type DBMigrate interface {
	Migrate(migrationDir string) error
}

// Entities

type DBDispense interface {
	CreateDispensa(template Dispensa) (string, error)
	GetDispensa(id string) (Dispensa, error)
	AllDispense() ([]Dispensa, error)
	UpdateDispensa(d Dispensa) error
	DeleteDispensa(id string) error
}

type DBUpload interface {
	CreateUpload(template UploadedContent) (string, error)
	DeleteUpload(id UploadedContent) (UploadedContent, error)
}

type DBHashApprovals interface {
	CreateApprovedHash(a HashApproval) error
	GetApprovedHash(hash string) (HashApproval, error)
	AllApprovedHash(a HashApproval) error
}

type DBHashRejections interface {
	CreateRejectedHash(a HashRejection) error
	GetRejectedHash(hash string) (HashRejection, error)
	AllRejectedHash(a HashRejection) error
}

// Relations

type DBTags interface {
	SetTags(dispensaId string, tag []string) error
	GetTags(dispensaId string) ([]string, error)
}

type DBOwners interface {
	CreateOwner(owner, owned string) error
	GetOwner(ownedId string) (string, error)
}

type DBAuthors interface {
	CreateAuthor(userId, dispensaId string) error
	GetAuthorId(dispensaId string) (string, error)
	GetUserDispenseIds(user string) ([]string, error)
}

type DBCreationTimes interface {
	CreateCreationTime(entityId string, createdAt time.Time) error
	GetCreationTime(entityId string) (time.Time, error)
}

type DBOther interface {
	// AllDispenseOfUser ritorna tutte le dispense di un certo utente
	AllDispenseOfUser(username string) ([]Dispensa, error)
	// AllLatestsApprovedDispenseUploads ritorna una lista contenente tutte le dispense con almeno un upload approvato e ritorna la coppia della (dispensa, upload più recente)
	AllLatestsApprovedDispenseUploads() ([]struct {
		Dispensa
		UploadedContent
	}, error)
	// AllDispenseWithState ...
	AllDispenseWithState(username string) ([]struct {
		Dispensa
		State string
	}, error)
}

// DB main "interface group" for interacting with the database, with this technique we can test each "table" api of the DB in isolation.
type DB struct {
	DBMigrate

	DBDispense
	DBUpload
	DBHashApprovals
	DBHashRejections

	DBTags
	DBOwners
	DBAuthors
	DBCreationTimes

	DBOther
}