/**
 * @copyright 2017 Christoph Wurst <christoph@winzerhof-wurst.at>
 *
 * @author 2017 Christoph Wurst <christoph@winzerhof-wurst.at>
 *
 * @license AGPL-3.0-or-later
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

import {
	buildRecipients,
	buildReplyBody,
	buildReplySubject,
} from '../../ReplyBuilder'
import { html, plain } from '../../util/text'

describe('ReplyBuilder', () => {
	it('creates a reply body without any sender', () => {
		const body = plain('Newsletter\nhello\ncheers')

		const replyBodyTop = buildReplyBody(body)
		const replyBodyBottom = buildReplyBody(body, undefined, undefined, false)

		expect(replyBodyTop).toEqual(html('<p></p><p></p><div class="quote"><br>&gt; Newsletter<br>&gt; hello<br>&gt; cheers</div>'))
		expect(replyBodyBottom).toEqual(html('<div class="quote"><br>&gt; Newsletter<br>&gt; hello<br>&gt; cheers</div><p></p><p></p>'))
	})

	it('creates a reply body', () => {
		const body = plain('Newsletter\nhello')

		const replyBodyTop = buildReplyBody(
			body,
			{
				label: 'Test User',
				email: 'test@user.ru',
			},
			1541426237
		)
		const replyBodyBottom = buildReplyBody(
			body,
			{
				label: 'Test User',
				email: 'test@user.ru',
			},
			1541426237,
			false
		)

		expect(replyBodyTop.value.startsWith(html('<p></p><p></p><div class="quote">"Test User" test@user.ru – November 5, 2018 ').value)).toEqual(true)
		expect(replyBodyBottom.value.endsWith(html('<p></p><p></p>').value)).toEqual(true)
	})

	let envelope

	beforeEach(function() {
		envelope = {}
	})

	const createAddress = (addr) => {
		return {
			label: addr,
			email: addr,
		}
	}

	const assertSameAddressList = (l1, l2) => {
		const rawL1 = l1.map((a) => a.email)
		const rawL2 = l2.map((a) => a.email)
		rawL1.sort()
		rawL2.sort()
		expect(rawL1).toEqual(rawL2)
	}

	// b -> a to a -as b
	it('handles a one-on-one reply', () => {
		const a = createAddress('a@domain.tld')
		const b = createAddress('b@domain.tld')
		envelope.from = [b]
		envelope.to = [a]
		envelope.cc = []

		const reply = buildRecipients(envelope, a)

		assertSameAddressList(reply.from, [a])
		assertSameAddressList(reply.to, [b])
		assertSameAddressList(reply.cc, [])
	})

	it('handles simple group reply', () => {
		const a = createAddress('a@domain.tld')
		const b = createAddress('b@domain.tld')
		const c = createAddress('c@domain.tld')
		envelope.from = [a]
		envelope.to = [b, c]
		envelope.cc = []

		const reply = buildRecipients(envelope, b)

		assertSameAddressList(reply.from, [b])
		assertSameAddressList(reply.to, [a, c])
		assertSameAddressList(reply.cc, [])
	})

	it('handles group reply with CC', () => {
		const a = createAddress('a@domain.tld')
		const b = createAddress('b@domain.tld')
		const c = createAddress('c@domain.tld')
		const d = createAddress('d@domain.tld')
		envelope.from = [a]
		envelope.to = [b, c]
		envelope.cc = [d]

		const reply = buildRecipients(envelope, b)

		assertSameAddressList(reply.from, [b])
		assertSameAddressList(reply.to, [a, c])
		assertSameAddressList(reply.cc, [d])
	})

	it('handles group reply of CC address', () => {
		const a = createAddress('a@domain.tld')
		const b = createAddress('b@domain.tld')
		const c = createAddress('c@domain.tld')
		const d = createAddress('d@domain.tld')
		envelope.from = [a]
		envelope.to = [b, c]
		envelope.cc = [d]

		const reply = buildRecipients(envelope, d)

		assertSameAddressList(reply.from, [d])
		assertSameAddressList(reply.to, [a, b, c])
		assertSameAddressList(reply.cc, [])
	})

	it('handles group reply of CC address with many CCs', () => {
		const a = createAddress('a@domain.tld')
		const b = createAddress('b@domain.tld')
		const c = createAddress('c@domain.tld')
		const d = createAddress('d@domain.tld')
		const e = createAddress('e@domain.tld')
		envelope.from = [a]
		envelope.to = [b, c]
		envelope.cc = [d, e]

		const reply = buildRecipients(envelope, e)

		assertSameAddressList(reply.from, [e])
		assertSameAddressList(reply.to, [a, b, c])
		assertSameAddressList(reply.cc, [d])
	})

	it('handles reply of message where the recipient is in the CC', () => {
		const ali = createAddress('ali@domain.tld')
		const bob = createAddress('bob@domain.tld')
		const me = createAddress('c@domain.tld')
		const dani = createAddress('d@domain.tld')

		envelope.from = [ali]
		envelope.to = [bob]
		envelope.cc = [me, dani]

		const reply = buildRecipients(envelope, me)

		assertSameAddressList(reply.from, [me])
		assertSameAddressList(reply.to, [ali, bob])
		assertSameAddressList(reply.cc, [dani])
	})

	it("handles jan's reply to nina's mesage to a mailing list", () => {
		const nina = createAddress('nina@nc.com')
		const list = createAddress('list@nc.com')
		const jan = createAddress('jan@nc.com')

		envelope.from = [nina]
		envelope.to = [list]
		envelope.cc = []

		const reply = buildRecipients(envelope, jan)

		assertSameAddressList(reply.from, [jan])
		assertSameAddressList(reply.to, [nina, list])
		assertSameAddressList(reply.cc, [])
	})

	it('removes original sender for recipients list when same as replier (self-sent email)', () => {
		const a = createAddress('a@domain.tld')
		const b = createAddress('b@domain.tld')
		envelope.from = [a]
		envelope.to = [a, b]
		envelope.cc = []

		const reply = buildRecipients(envelope, a)

		assertSameAddressList(reply.from, [a])
		assertSameAddressList(reply.to, [b])
		assertSameAddressList(reply.cc, [])
	})

	it('removes original sender for recipients list when same as replier (self-sent email) with many CC', () => {
		const a = createAddress('a@domain.tld')
		const b = createAddress('b@domain.tld')
		const c = createAddress('c@domain.tld')
		const d = createAddress('d@domain.tld')
		const e = createAddress('e@domain.tld')
		envelope.from = [a]
		envelope.to = [b, c]
		envelope.cc = [a, d, e]

		const reply = buildRecipients(envelope, a)

		assertSameAddressList(reply.from, [a])
		assertSameAddressList(reply.to, [b, c])
		assertSameAddressList(reply.cc, [d, e])
	})

	it('pure self-sent email', () => {
		const a = createAddress('a@domain.tld')
		envelope.from = [a]
		envelope.to = [a]
		envelope.cc = []

		const reply = buildRecipients(envelope, a)

		assertSameAddressList(reply.from, [a])
		assertSameAddressList(reply.to, [a])
		assertSameAddressList(reply.cc, [])
	})

	it('adds re: to a reply subject', () => {
		const orig = 'Hello'

		const replySubject = buildReplySubject(orig)

		expect(replySubject).toEqual('Re: Hello')
	})

	it("does not stack subject re:'s", () => {
		const orig = 'Re: Hello'

		const replySubject = buildReplySubject(orig)

		expect(replySubject).toEqual('Re: Hello')
	})
})