const { getIpfs, providers } = require('ipfs-provider')
const { httpClient, jsIpfs } = providers

const { ipfs, provider, apiAddress } = await getIpfs({
  // when httpClient provider is used multiple times
  // define its constructor once, at the top level
  loadHttpClientModule: () => require('ipfs-http-client'),

  // note this is an array, providers are tried in order:
  providers: [

    // try various HTTP endpoints (best-effort),
    httpClient({
      // (1) try multiaddr of a local node
      apiAddress: '/ip4/127.0.0.1/tcp/5001'
    }),
    httpClient(), // (2) try "/api/v0/" on the same Origin as the page
    httpClient({
      // (3) try arbitrary API from URL string
      apiAddress: 'https://some.example.com:8080'
    }),
    httpClient({
      // (4) try API defined by a custom http client config
      apiAddress: {
        host: 'apis.example.com',
        port: '443',
        protocol: 'https',
        apiPath: 'custom/path/to/api/v0',
        headers: {
          authorization: 'Basic dXNlcjpwYXNz'
        }
      }
    }),
    // (5) final fallback to spawning embedded js-ipfs running in-page
    jsIpfs({
      // js-ipfs package is used only once, as a last resort
      loadJsIpfsModule: () => require('ipfs-core'),
      options: { } // pass config: https://github.com/ipfs/js-ipfs/blob/master/packages/ipfs/docs/MODULE.md#ipfscreateoptions
    })
  ]
})

for await (const file of ipfs.add("text")) {
  if (file && file.cid) {
    console.log(`successfully stored at ${file.cid}`)
  } else {
    console.error('unable to ipfs.add', file)
  }
}

const { getIpfs, providers } = require('ipfs-provider')
const { httpClient, jsIpfs } = providers

const { ipfs, provider } = await getIpfs({
  providers: [
    httpClient(),
    jsIpfs()
  ]
})

const { ipfs, provider } = await getIpfs({
  providers: [ /* array of providers to try in order */ ],
  connectionTest: () => { /* boolean function to test the connection to IPFS, default one tries to ipfs.get the CID of an empty directory */ },
})

const { ipfs, provider } = await getIpfs({
  providers: [
    httpClient({
      loadHttpClientModule: () => require('ipfs-http-client'),
      apiAddress: 'https://api.example.com:8080/'
    })
  ]
})

const { ipfs, provider } = await getIpfs({
  providers: [
    jsIpfs({
      loadJsIpfsModule: () => require('ipfs-core'),
      options: { /* advanced config */ }
    })
  ]
})

const { ipfs, provider } = await getIpfs({
  providers: [
    windowIpfs({
      // example
      permissions: { commands: ['add','cat','id', 'version'] }
    })
  ]
})

const { ipfs, provider } = await getIpfs({
  providers: [
    webExt()
  ]
})