const  EmlParser = require('eml-parser');
const  fs = require('fs');

let  emailFile = fs.createReadStream('./test.eml');

new  EmlParser(emailFile).convertEmailToStream('pdf')
.then(stream  => {
   stream.pipe(fs.createWriteStream(emailFile.path + '.pdf'));
})
.catch(err  => {
   console.log(err);
})

new EmlParser(fs.createReadStream('test.eml'))

new EmlParser(fs.createReadStream('test.eml'))
.parseEml()
.then(result  => {
	// properties in result object:
	// {
	//	"attachments": [],
	//	"headers": {},
	//	"headerLines": [],
	//	"html": "",
	//	"text": "",
	//	"textAsHtml": "",
	//	"subject": "",
	//	"references": "",
	//	"date": "",
	//	"to": {},
	//	"from": {},
	//	"cc": {},
	//	"messageId": "",
	//	"inReplyTo": ""
	// }
	console.log(result);
})
.catch(err  => {
	console.log(err);
})

new EmlParser(fs.createReadStream('test.eml'))
.getEmailHeaders()
.then(headers  => {
	//properties of headers object
	//{
	//	subject:  result.subject,
	//	from:  result.from.value,
	//	to:  result.to.value,
	//	cc:  result.cc.value,
	//	date:  result.date,
	//	inReplyTo:  result.inReplyTo,
	//	messageId:  result.messageId
	//}
	console.log(headers)
})
.catch(err  => {
	console.log(err);
})

new EmlParser(fs.createReadStream('test.eml'))
.getEmailBodyHtml()
.then(htmlString  => {
	fs.writeFileSync('abc.html',htmlString)	;
})
.catch(err  => {
	console.log(err);
})

new EmlParser(fs.createReadStream('test.eml'))
.getEmailAsHtml()
.then(htmlString  => {
	fs.writeFileSync('abc.html',htmlString)	;
})
.catch(err  => {
	console.log(err);
})

let  file = fs.createReadStream('test.eml')
new  EmlParser(file)
.convertEmailToStream('png')
.then(stream  => {
	stream.pipe(fs.createWriteStream(file.path + '.png'));
})
.catch(err  => {
	console.log(err);
})

let  file = fs.createReadStream('test.eml')
new  EmlParser(file)
.convertEmailToBuffer('png')
.then(buffer  => {
	//use fs.write to write into file
})
.catch(err  => {
	console.log(err);
})

let  file = fs.createReadStream('test.eml')
new  EmlParser(file)
.getEmailAttachments()
.then(attachments  => {
	attachments.forEach(attch  => {
		//attch.content is the buffer object
		console.log(attch.filename, attach.content);
		.then(res  => {
			console.log(res);
		})
		.catch(err  => {
		console.log(err);
		})
	});
})
.catch(err  => {
	console.log(err);
})