const axios = require('axios')
const FormData = require('form-data')
const { createReadStream } = require('fs')
 
async function toot(data, opts) {
	const { instance, oauthToken } = opts

	// contains 'toot', and maybe 'attach' / 'attachDescription'
	const media_ids = []
	if(data.attach) {
		for await(file of data.attach) {
			const id = await uploadMedia(file, data.attachDescription, instance, oauthToken)
			media_ids.push(id)
		}
	}

	// https://docs.joinmastodon.org/methods/statuses/
	const result = await axios.post(`${instance}/api/v1/statuses`, {
			status: data.toot,
			media_ids: media_ids,
		}, {
			headers: {
				"Authorization": `Bearer ${oauthToken}`
			}
	})

	console.log(`  toot: status result: ${result.status}`)
}

async function uploadMedia(fileName, description, instance, oauthToken) {
	const formData = new FormData()
	formData.append('file', createReadStream(fileName))
	formData.append('description', description)

	// https://docs.joinmastodon.org/methods/statuses/media/
	const result = await axios.post(`${instance}/api/v1/media`, formData, {
      headers: {
        "Content-Type": `multipart/form-data; boundary=${formData.getBoundary()}`,
        "Authorization": `Bearer ${oauthToken}`
      }
    });

	if(result.status !== 200) {
		throw "something went wrong with " + result.data
	}

	console.log(`  toot: media result: ${result.status} - media id: ${result.data.id}`)
	return result.data.id
}

module.exports = {
	toot
}