m = require 'mochainon'
{ expect } = m.chai

{ PortMap } = require '../src/compose/ports'

describe 'Ports', ->

	describe 'Port string parsing', ->

		it 'should correctly parse a port string without a range', ->

			expect(new PortMap('80')).to.deep.equal(new PortMap({
				internalStart: 80
				internalEnd: 80
				externalStart: 80
				externalEnd: 80
				protocol: 'tcp'
				host: ''
			}))

			expect(new PortMap('80:80')).to.deep.equal(new PortMap({
				internalStart: 80
				internalEnd: 80
				externalStart: 80
				externalEnd: 80
				protocol: 'tcp'
				host: ''
			}))

		it 'should correctly parse a port string without an external range', ->

			expect(new PortMap('80-90')).to.deep.equal(new PortMap({
				internalStart: 80
				internalEnd: 90
				externalStart: 80
				externalEnd: 90
				protocol: 'tcp'
				host: ''
			}))

		it 'should correctly parse a port string with a range', ->
			expect(new PortMap('80-100:100-120')).to.deep.equal(new PortMap({
				internalStart: 100
				internalEnd: 120
				externalStart: 80
				externalEnd: 100
				protocol: 'tcp'
				host: ''
			}))

		it 'should correctly parse a protocol', ->
			expect(new PortMap('80/udp')).to.deep.equal(new PortMap({
				internalStart: 80
				internalEnd: 80
				externalStart: 80
				externalEnd: 80
				protocol: 'udp'
				host: ''
			}))

			expect(new PortMap('80:80/udp')).to.deep.equal(new PortMap({
				internalStart: 80
				internalEnd: 80
				externalStart: 80
				externalEnd: 80
				protocol: 'udp'
				host: ''
			}))

			expect(new PortMap('80-90:100-110/udp')).to.deep.equal(new PortMap({
				internalStart: 100
				internalEnd: 110
				externalStart: 80
				externalEnd: 90
				protocol: 'udp'
				host: ''
			}))

		it 'should throw when the port string is incorrect', ->
			expect(-> new PortMap('80-90:80-85')).to.throw

	describe 'toDockerOpts', ->

		it 'should correctly generate docker options', ->

			expect(new PortMap('80').toDockerOpts()).to.deep.equal({
				exposedPorts: {
					'80/tcp': {}
				}
				portBindings: {
					'80/tcp': [{ HostIp: '', HostPort: '80' }]
				}
			})

		it 'should correctly generate docker options for a port range', ->
			expect(new PortMap('80-85').toDockerOpts()).to.deep.equal({
				exposedPorts: {
					'80/tcp': {}
					'81/tcp': {}
					'82/tcp': {}
					'83/tcp': {}
					'84/tcp': {}
					'85/tcp': {}
				}
				portBindings: {
					'80/tcp': [{ HostIp: '', HostPort: '80' }]
					'81/tcp': [{ HostIp: '', HostPort: '81' }]
					'82/tcp': [{ HostIp: '', HostPort: '82' }]
					'83/tcp': [{ HostIp: '', HostPort: '83' }]
					'84/tcp': [{ HostIp: '', HostPort: '84' }]
					'85/tcp': [{ HostIp: '', HostPort: '85' }]
				}
			})

	describe 'fromDockerOpts', ->

		it 'should correctly detect a port range', ->

			expect(PortMap.fromDockerOpts({
				'100/tcp': [{ HostIp: '123', HostPort: 200 }]
				'101/tcp': [{ HostIp: '123', HostPort: 201 }]
				'102/tcp': [{ HostIp: '123', HostPort: 202 }]
			})).to.deep.equal([new PortMap({
				internalStart: 100
				internalEnd: 102
				externalStart: 200
				externalEnd: 202
				protocol: 'tcp'
				host: '123'
			})])

		it 'should correctly split ports into ranges', ->
			expect(PortMap.fromDockerOpts({
				'100/tcp': [{ HostIp: '123', HostPort: 200 }]
				'101/tcp': [{ HostIp: '123', HostPort: 201 }]
				'105/tcp': [{ HostIp: '123', HostPort: 205 }]
				'106/tcp': [{ HostIp: '123', HostPort: 206 }]
				'110/tcp': [{ HostIp: '123', HostPort: 210 }]
			})).to.deep.equal([
				new PortMap({
					internalStart: 100
					internalEnd: 101
					externalStart: 200
					externalEnd: 201
					protocol: 'tcp'
					host: '123'
				})
				new PortMap({
					internalStart: 105
					internalEnd: 106
					externalStart: 205
					externalEnd: 206
					protocol: 'tcp'
					host: '123'
				})
				new PortMap({
					internalStart: 110
					internalEnd: 110
					externalStart: 210
					externalEnd: 210
					protocol: 'tcp'
					host: '123'
				})
			])

		it 'should correctly consider internal and external ports', ->
			expect(PortMap.fromDockerOpts({
				'100/tcp': [{ HostIp: '123', HostPort: 200 }]
				'101/tcp': [{ HostIp: '123', HostPort: 101 }]
				'102/tcp': [{ HostIp: '123', HostPort: 202 }]
			})).to.deep.equal([
				new PortMap({
					internalStart: 100
					internalEnd: 100
					externalStart: 200
					externalEnd: 200
					protocol: 'tcp'
					host: '123'
				})
				new PortMap({
					internalStart: 101
					internalEnd: 101
					externalStart: 101
					externalEnd: 101
					protocol: 'tcp'
					host: '123'
				})
				new PortMap({
					internalStart: 102
					internalEnd: 102
					externalStart: 202
					externalEnd: 202
					protocol: 'tcp'
					host: '123'
				})
			])

		it 'should consider the host when generating ranges', ->
			expect(PortMap.fromDockerOpts({
				'100/tcp': [{ HostIp: '123', HostPort: 200 }]
				'101/tcp': [{ HostIp: '456', HostPort: 201 }]
				'102/tcp': [{ HostIp: '456', HostPort: 202 }]
			})).to.deep.equal([
				new PortMap({
					internalStart: 100
					internalEnd: 100
					externalStart: 200
					externalEnd: 200
					protocol: 'tcp'
					host: '123'
				})
				new PortMap({
					internalStart: 101
					internalEnd: 102
					externalStart: 201
					externalEnd: 202
					protocol: 'tcp'
					host: '456'
				})
			])

		it 'should consider the protocol when generating ranges', ->
			expect(PortMap.fromDockerOpts({
				'100/tcp': [{ HostIp: '123', HostPort: 200 }]
				'101/udp': [{ HostIp: '123', HostPort: 201 }]
				'102/udp': [{ HostIp: '123', HostPort: 202 }]
			})).to.deep.equal([
				new PortMap({
					internalStart: 100
					internalEnd: 100
					externalStart: 200
					externalEnd: 200
					protocol: 'tcp'
					host: '123'
				})
				new PortMap({
					internalStart: 101
					internalEnd: 102
					externalStart: 201
					externalEnd: 202
					protocol: 'udp'
					host: '123'
				})
			])

	describe 'Running container comparison', ->
		it 'should not consider order when comparing current and target state', ->
			portBindings = require('./data/ports/not-ascending/port-bindings.json')
			compose = require('./data/ports/not-ascending/compose.json')
			portMapsCurrent = PortMap.fromDockerOpts(portBindings)
			portMapsTarget = PortMap.fromComposePorts(compose.ports)

			expect(portMapsTarget).to.deep.equal(portMapsCurrent)

	describe 'fromComposePorts', ->
		it 'should normalise compose ports', ->
			expect(PortMap.fromComposePorts([
				'80:80',
				'81:81',
				'82:82',
			])).to.deep.equal([
				new PortMap('80-82')
			])

	describe 'normalisePortMaps', ->

		it 'should correctly normalise PortMap lists', ->
			expect(PortMap.normalisePortMaps([
				new PortMap('80:90')
				new PortMap('81:91')
			])).to.deep.equal([
				new PortMap('80-81:90-91')
			])

			expect(PortMap.normalisePortMaps([
				new PortMap('80:90')
				new PortMap('81:91')
				new PortMap('82:92')
				new PortMap('83:93')
				new PortMap('84:94')
				new PortMap('85:95')
				new PortMap('86:96')
				new PortMap('87:97')
				new PortMap('88:98')
				new PortMap('89:99')
				new PortMap('90:100')
			])).to.deep.equal([
				new PortMap('80-90:90-100')
			])

			expect(PortMap.normalisePortMaps([])).to.deep.equal([])

		it 'should correctly consider protocols', ->
			expect(PortMap.normalisePortMaps([
				new PortMap('80:90')
				new PortMap('81:91/udp')
			])).to.deep.equal([
				new PortMap('80:90')
				new PortMap('81:91/udp')
			])

			expect(PortMap.normalisePortMaps([
				new PortMap('80:90')
				new PortMap('100:110/udp')
				new PortMap('81:91')
			])).to.deep.equal([
				new PortMap('80-81:90-91')
				new PortMap('100:110/udp')
			])

			# This shouldn't ever be provided, but it shows the algorithm
			# working properly
			expect(PortMap.normalisePortMaps([
				new PortMap('80:90')
				new PortMap('81:91/udp')
				new PortMap('81:91')
			])).to.deep.equal([
				new PortMap('80-81:90-91')
				new PortMap('81:91/udp')
			])

		it 'should correctly consider hosts', ->
			expect(PortMap.normalisePortMaps([
				new PortMap('127.0.0.1:80:80')
				new PortMap('81:81')
			])).to.deep.equal([
				new PortMap('127.0.0.1:80:80')
				new PortMap('81:81')
			])

			expect(PortMap.normalisePortMaps([
				new PortMap('127.0.0.1:80:80')
				new PortMap('127.0.0.1:81:81')
			])).to.deep.equal([
				new PortMap('127.0.0.1:80-81:80-81')
			])