import { CID } from "multiformats";
import { Encoder } from "../encoders"
import { Readable } from "stream";
import { Fetcher } from "../fetcher";
import { StorageProvider } from "./provider"

export { DiskProvider } from "./disk"
export { MemoryProvider } from "./memory"
export { S3Provider } from "./s3"
export { StorageProvider } from "./provider"

// Storage class is the interface that puts together storage providers and encoders to ensure cid, and content
// stored line up with the storing data.
export class Storage implements Fetcher {

    provider: StorageProvider

    constructor(provider: StorageProvider) {
        this.provider = provider;
    }

    async put<T>(data: T, encoder: Encoder, metaData?: any): Promise<CID> {
        const { cid, content } = await encoder(data)
        await this.provider.put(cid, content, metaData)
        return cid;
    }
    async get(cid: CID): Promise<Readable> {
        return this.provider.get(cid)
    }
}