export declare const prefix: {
  (prefix: string): <S extends KeyValueStore.AnyStore>(self: S) => S
  <S extends KeyValueStore.AnyStore>(self: S, prefix: string): S
}

export declare const make: (
  impl: Omit<KeyValueStore, typeof TypeId | "has" | "modify" | "isEmpty" | "forSchema"> & Partial<KeyValueStore>
) => KeyValueStore

export declare const layerFileSystem: (
  directory: string
) => Layer.Layer<KeyValueStore, PlatformError.PlatformError, FileSystem.FileSystem | Path.Path>

export declare const layerMemory: Layer.Layer<KeyValueStore>

export declare const layerSchema: <A, I, R>(
  schema: Schema.Schema<A, I, R>,
  tagIdentifier: string
) => {
  readonly tag: Context.Tag<SchemaStore<R, A>, SchemaStore<R, A>>
  readonly layer: Layer.Layer<SchemaStore<R, A>, never, KeyValueStore>
}

export interface KeyValueStore {
  readonly [TypeId]: TypeId
  /**
   * Returns the value of the specified key if it exists.
   */
  readonly get: (key: string) => Effect.Effect<Option.Option<string>, PlatformError.PlatformError>

  /**
   * Sets the value of the specified key.
   */
  readonly set: (key: string, value: string) => Effect.Effect<void, PlatformError.PlatformError>

  /**
   * Removes the specified key.
   */
  readonly remove: (key: string) => Effect.Effect<void, PlatformError.PlatformError>

  /**
   * Removes all entries.
   */
  readonly clear: Effect.Effect<void, PlatformError.PlatformError>

  /**
   * Returns the number of entries.
   */
  readonly size: Effect.Effect<number, PlatformError.PlatformError>

  /**
   * Updates the value of the specified key if it exists.
   */
  readonly modify: (
    key: string,
    f: (value: string) => string
  ) => Effect.Effect<Option.Option<string>, PlatformError.PlatformError>

  /**
   * Returns true if the KeyValueStore contains the specified key.
   */
  readonly has: (key: string) => Effect.Effect<boolean, PlatformError.PlatformError>

  /**
   * Checks if the KeyValueStore contains any entries.
   */
  readonly isEmpty: Effect.Effect<boolean, PlatformError.PlatformError>

  /**
   * Create a SchemaStore for the specified schema.
   */
  readonly forSchema: <A, I, R>(schema: Schema.Schema<A, I, R>) => SchemaStore<R, A>
}

export interface SchemaStore<R, A> {
  readonly [SchemaStoreTypeId]: SchemaStoreTypeId
  /**
   * Returns the value of the specified key if it exists.
   */
  readonly get: (
    key: string
  ) => Effect.Effect<Option.Option<A>, PlatformError.PlatformError | ParseResult.ParseError, R>

  /**
   * Sets the value of the specified key.
   */
  readonly set: (key: string, value: A) => Effect.Effect<void, PlatformError.PlatformError | ParseResult.ParseError, R>

  /**
   * Removes the specified key.
   */
  readonly remove: (key: string) => Effect.Effect<void, PlatformError.PlatformError>

  /**
   * Removes all entries.
   */
  readonly clear: Effect.Effect<void, PlatformError.PlatformError>

  /**
   * Returns the number of entries.
   */
  readonly size: Effect.Effect<number, PlatformError.PlatformError>

  /**
   * Updates the value of the specified key if it exists.
   */
  readonly modify: (
    key: string,
    f: (value: A) => A
  ) => Effect.Effect<Option.Option<A>, PlatformError.PlatformError | ParseResult.ParseError, R>

  /**
   * Returns true if the KeyValueStore contains the specified key.
   */
  readonly has: (key: string) => Effect.Effect<boolean, PlatformError.PlatformError>

  /**
   * Checks if the KeyValueStore contains any entries.
   */
  readonly isEmpty: Effect.Effect<boolean, PlatformError.PlatformError>
}

export declare const KeyValueStore: Context.Tag<KeyValueStore, KeyValueStore>

export declare const SchemaStoreTypeId: typeof SchemaStoreTypeId

export type SchemaStoreTypeId = typeof SchemaStoreTypeId

export declare const TypeId: typeof TypeId

export type TypeId = typeof TypeId

export type AnyStore = KeyValueStore | SchemaStore<any, any>