package biz

import (
	"context"
	"io"
	"time"
)

// Cache is the shared cache seam. The data implementation uses Redis when it
// is reachable and falls back to process memory for local development.
type Cache interface {
	Get(context.Context, string) (string, bool, error)
	Set(context.Context, string, string, time.Duration) error
	Delete(context.Context, string) error
	Increment(context.Context, string, time.Duration) (int64, error)
}

type StoredFile struct {
	Name string
	Path string
	URL  string
	Size int64
}

// FileStorage owns the persistence boundary for uploaded files.
type FileStorage interface {
	Put(context.Context, string, io.Reader) (*StoredFile, error)
	Open(context.Context, string) (io.ReadCloser, error)
	Delete(context.Context, string) error
	Compose(context.Context, []string, string) (*StoredFile, string, error)
	DeletePrefix(context.Context, string) error
	List(context.Context, string, string, int) ([]*StoredFile, string, bool, error)
}

type JWTSettings struct {
	SigningKey string
	Issuer     string
	Expires    time.Duration
	Buffer     time.Duration
}

type CaptchaSettings struct {
	KeyLong         int
	ImageWidth      int
	ImageHeight     int
	StoreExpiration time.Duration
}

type MediaSettings struct {
	SessionTTL  int
	MaxFileSize int64
}

// RuntimeSettings exposes only the active values needed by the application.
// The data implementation resolves every call from conf.Runtime so hot reloads
// take effect without rebuilding services.
type RuntimeSettings interface {
	RouterPrefix() string
	JWTSettings() JWTSettings
	CaptchaSettings() CaptchaSettings
	MediaSettings() MediaSettings
	UseMultipoint() bool
}

type IssuedToken struct {
	Value     string
	ExpiresAt time.Time
	TTL       time.Duration
}

type TokenIssuer interface {
	IssueToken(*User, uint, bool, time.Duration) (*IssuedToken, error)
}