import fs from 'fs'
import 'mocha'
import should from 'should'
import stream from 'stream'
import zlib from 'zlib'

import { XmlParser } from '../src/parser'
describe('should respect explicitArray constructor option', () => {
	it('should properly parse a simple file with explicitArray set to false.', (done) => {
		const xml = fs.readFileSync('./test/TestFiles/item.xml')
		const parser = new XmlParser({ resourcePath: '/items/item', explicitArray: false })
		const expectedData = [
			{
				$: { id: '1', test: 'hello' },
				subitem: { $: { sub: '2' }, _: 'two' }
			},
			{
				$: { id: '2' },
				subitem: { _: 'five' }
			}
		]

		parser.parse(xml.toString(), (err, data) => {
			if (err) {
				done(err)
			}
			// console.log('data=', JSON.stringify(data))
			should(data).deepEqual(expectedData)
			done()
		})
	})

	it('should properly parse a medium size file with explicitArray set to false.', (done) => {
		const xml = fs.readFileSync('./test/TestFiles/medium.xml')
		const parser = new XmlParser({ resourcePath: '/items/item', explicitArray: false })
		const expectedData = [
			{
				$: {
					id: '1',
					test: 'hello'
				},
				subitem: {
					$: {
						sub: '2'
					},
					_: 'two'
				}
			},
			{
				$: {
					id: '2'
				},
				subitem: {
					_: 'five'
				}
			},
			{
				$: {
					id: '3',
					test: 'hello'
				},
				subitem: {
					$: {
						sub: '2'
					},
					_: 'two'
				}
			},
			{
				$: {
					id: '4',
					test: 'hello'
				},
				subitem: {
					$: {
						sub: '2'
					},
					_: 'two'
				}
			},
			{
				$: {
					id: '5',
					test: 'hello'
				},
				subitem: {
					$: {
						sub: '2'
					},
					_: 'two'
				}
			},
			{
				$: {
					id: '6',
					test: 'hello'
				},
				subitem: {
					$: {
						sub: '2'
					},
					_: 'two'
				}
			},
			{
				$: {
					id: '7',
					test: 'hello'
				},
				subitem: {
					$: {
						sub: '2'
					},
					_: 'two'
				}
			},
			{
				$: {
					id: '8',
					test: 'hello'
				},
				subitem: {
					$: {
						sub: '2'
					},
					_: 'two'
				}
			},
			{
				$: {
					id: '9',
					test: 'hello'
				},
				subitem: {
					$: {
						sub: '2'
					},
					_: 'two'
				}
			},
			{
				$: {
					id: '10',
					test: 'hello'
				},
				subitem: {
					$: {
						sub: '2'
					},
					_: 'two'
				}
			}
		]
		parser.parse(xml, (err, data) => {
			if (err) {
				done(err)
			}

			should(data).deepEqual(expectedData)
			should(data.length).equal(10)
			done()
		})
	})

	it('should properly parse a file containing many nodes when explicitArray set to false.', (done) => {
		const xml = fs.readFileSync('./test/TestFiles/manyItems.xml')
		const parser = new XmlParser({ resourcePath: '/items/item', explicitArray: false })

		parser.parse(xml, (err, data) => {
			if (err) {
				done(err)
			}

			should(data.length).equal(296)
			done()
		})
	})

	it('should properly parse a xml simple file in which nodes contain text values randomly when explicitArray set to false.', (done) => {
		const xml = fs.readFileSync('./test/TestFiles/randomText.xml')
		const parser = new XmlParser({ resourcePath: '/items/item', explicitArray: false })
		const expectedData = [
			{
				$: { id: '1', test: 'hello' },
				_: 'item one two',
				subitem: { $: { sub: '2' }, _: 'two' }
			},
			{
				$: { id: '2' },
				_: 'item one two three four',
				subitem: { _: 'five' }
			}
		]

		parser.parse(xml, (err, data) => {
			if (err) {
				done(err)
			}

			should(data).deepEqual(expectedData)
			should(data.length).equal(2)
			done()
		})
	})

	it('should properly parse a huge file with explicitArray set to false.', (done) => {
		const xml = fs.readFileSync('./test/TestFiles/hugeFile.xml')
		const parser = new XmlParser({ resourcePath: '/items/item', explicitArray: false })
		// console.log(parser)
		parser.parse(xml, (err, data) => {
			if (err) {
				done(err)
			}
			should(data.length).equal(2072)
			done()
		})
	})

	it('should properly return error if the xml file is corrupted.', (done) => {
		const xml = fs.readFileSync('./test/TestFiles/corrupted.xml')
		const parser = new XmlParser({ resourcePath: '/items/item', explicitArray: false })

		parser.parse(xml, (err, data) => {
			// console.log(err)
			should(err.message).equal('mismatched tag at line no: 12')
			should(data).not.be.ok()
			done()
		})
	})

	it('should properly generate objects when special symbols are passed as attrs and text keys and explicitArray is false in the options.', (done) => {
		const xmlStream = fs.createReadStream('./test/TestFiles/item.xml')
		const parser = new XmlParser({
			resourcePath: '/items/item',
			attrsKey: '!',
			textKey: '%',
			explicitArray: false
		})
		const expectedData = [
			{
				'!': { id: '1', test: 'hello' },
				subitem: { '!': { sub: '2' }, '%': 'two' }
			},
			{
				'!': { id: '2' },
				subitem: { '%': 'five' }
			}
		]
		const actualData: string[] = []
		let dataEventCount = 0

		parser.on('data', (data) => {
			actualData.push(data)
			dataEventCount++
		})

		parser.on('error', (err) => {
			done(err)
		})

		parser.on('end', () => {
			// console.log('actualData=', JSON.stringify(actualData, null, 1))
			// console.log('dataEventCount=', dataEventCount)
			should(actualData).deepEqual(expectedData)
			should(dataEventCount).equal(2)
			done()
		})
		xmlStream.pipe(parser)
	})
})