const tape = require('tape')
const IPFS = require('ipfs')
const AbstractContainer = require('primea-abstract-container')
const Message = require('primea-message')
const Hypervisor = require('../')

// start ipfs
const node = new IPFS({
  start: false
})

class BaseContainer extends AbstractContainer {
  onCreation (message) {
    const port = message.ports[0]
    if (port) {
      return this.kernel.ports.bind('root', port)
    }
  }
  static get typeId () {
    return 9
  }
}

node.on('ready', () => {
  tape('basic', async t => {
    t.plan(3)
    let message
    const expectedState = {
      '/': 'zdpuAqbcQhgu2T2MBgHbYu1MtHXyZzNsCaQjTPTR6NN9s5hbk'
    }

    class testVMContainer extends BaseContainer {
      onMessage (m) {
        t.true(m === message, 'should recive a message')
      }
    }

    try {
      const hypervisor = new Hypervisor(node.dag)
      hypervisor.registerContainer(testVMContainer)

      const rootContainer = await hypervisor.createInstance(new Message({
        data: {
          type: testVMContainer.typeId
        }
      }))

      hypervisor.pin(rootContainer)

      const [portRef1, portRef2] = rootContainer.ports.createChannel()
      const initMessage = rootContainer.createMessage({
        data: {
          code: Buffer.from('test code'),
          type: testVMContainer.typeId
        },
        ports: [portRef2]
      })

      await rootContainer.createInstance(initMessage)

      await rootContainer.ports.bind('first', portRef1)
      message = rootContainer.createMessage()
      await rootContainer.send(portRef1, message)

      // console.log(JSON.stringify(hypervisor.state, null, 2))
      const stateRoot = await hypervisor.createStateRoot(Infinity)
      t.deepEquals(stateRoot, expectedState, 'expected root!')

      t.equals(hypervisor.scheduler.leastNumberOfTicks(), 0)
    } catch (e) {
      console.log(e)
    }
  })

  tape('basic - do not store containers with no ports bound', async t => {
    t.plan(1)
    const expectedState = {
      '/': 'zdpuAop4nt8pqzg7duciSYbZmWfDaBiz87RCtGCbb35ewUrbW'
    }

    class testVMContainer extends BaseContainer {
      onCreation () {}
    }

    try {
      const hypervisor = new Hypervisor(node.dag)
      hypervisor.registerContainer(testVMContainer)

      const root = await hypervisor.createInstance(new Message({
        data: {
          type: testVMContainer.typeId
        }
      }))

      hypervisor.pin(root)
      const [portRef1, portRef2] = root.ports.createChannel()

      await root.ports.bind('one', portRef1)
      await root.createInstance(root.createMessage({
        data: {
          type: testVMContainer.typeId
        },
        ports: [portRef2]
      }))

      const stateRoot = await hypervisor.createStateRoot(Infinity)

      // await hypervisor.graph.tree(stateRoot, Infinity, true)
      // console.log(JSON.stringify(stateRoot, null, 2))
      t.deepEquals(stateRoot, expectedState, 'expected root!')
    } catch (e) {
      console.log(e)
    }
  })

  tape('one child contract', async t => {
    t.plan(4)
    let message
    const expectedState = {
      '/': 'zdpuB2Huo3ro3Fv9mpMhnUcL3jjd37T6MJ6jEd8GvA2cpvaYR'
    }
    let hasResolved = false

    class testVMContainer2 extends BaseContainer {
      onMessage (m) {
        t.true(m === message, 'should recive a message')
        return new Promise((resolve, reject) => {
          setTimeout(() => {
            this.kernel.incrementTicks(1)
            hasResolved = true
            resolve()
          }, 200)
        })
      }

      static get typeId () {
        return 99
      }
    }

    class testVMContainer extends BaseContainer {
      async onMessage (m) {
        const [portRef1, portRef2] = this.kernel.ports.createChannel()
        await this.kernel.createInstance(this.kernel.createMessage({
          data: {
            type: testVMContainer2.typeId
          },
          ports: [portRef2]
        }))
        await this.kernel.send(portRef1, m)
        this.kernel.incrementTicks(1)
        return this.kernel.ports.bind('child', portRef1)
      }
    }

    const hypervisor = new Hypervisor(node.dag)
    hypervisor.registerContainer(testVMContainer)
    hypervisor.registerContainer(testVMContainer2)

    let root = await hypervisor.createInstance(new Message({
      data: {
        type: testVMContainer.typeId
      }
    }))

    hypervisor.pin(root)

    const rootId = root.id
    const [portRef1, portRef2] = root.ports.createChannel()
    await root.createInstance(root.createMessage({
      data: {
        type: testVMContainer.typeId
      },
      ports: [portRef2]
    }))

    await root.ports.bind('first', portRef1)
    message = root.createMessage()

    await root.send(portRef1, message)
    const stateRoot = await hypervisor.createStateRoot(Infinity)
    t.true(hasResolved, 'should resolve before generating the state root')

    // await hypervisor.graph.tree(stateRoot, Infinity, true)
    // console.log(JSON.stringify(stateRoot, null, 2))
    t.deepEquals(stateRoot, expectedState, 'expected state')

    // test reviving the state
    class testVMContainer3 extends BaseContainer {
      onMessage (m) {
        const port = this.kernel.ports.get('child')
        this.kernel.send(port, m)
        this.kernel.incrementTicks(1)
      }
    }

    hypervisor.registerContainer(testVMContainer3)
    root = await hypervisor.getInstance(rootId)
    const port = root.ports.get('first')
    root.send(port, message)
  })

  tape('traps', async t => {
    t.plan(1)
    class Root extends BaseContainer {
      async onMessage (m) {
        const [portRef1, portRef2] = this.kernel.ports.createChannel()
        const [portRef3, portRef4] = this.kernel.ports.createChannel()
        const [portRef5, portRef6] = this.kernel.ports.createChannel()

        await Promise.all(
          this.kernel.ports.bind('one', portRef1),
          this.kernel.ports.bind('two', portRef3),
          this.kernel.ports.bind('three', portRef5)
        )

        const message1 = this.kernel.createMessage({
          data: {
            type: Root.typeId
          },
          ports: [portRef2]
        })
        const message2 = this.kernel.createMessage({
          data: {
            type: Root.typeId
          },
          ports: [portRef4]
        })
        const message3 = this.kernel.createMessage({
          data: {
            type: Root.typeId
          },
          ports: [portRef6]
        })

        await Promise.all([
          this.kernel.createInstance(message1),
          this.kernel.createInstance(message2),
          this.kernel.createInstance(message3)
        ])

        throw new Error('it is a trap!!!')
      }
    }

    const hypervisor = new Hypervisor(node.dag)

    hypervisor.registerContainer(Root)
    const root = await hypervisor.createInstance(new Message({
      data: {
        type: Root.typeId
      }
    }))

    hypervisor.pin(root)

    await root.message(root.createMessage())
    const stateRoot = await hypervisor.createStateRoot()

    t.deepEquals(stateRoot, {
      '/': 'zdpuAwAZnRgD7ZKH8ssU9UdpFTsw3Q4gecKKyRoDsD4obhpJm'
    }, 'should revert the state')
  })

  tape('recieving older messages', async t => {
    t.plan(2)
    let runs = 0

    class Root extends BaseContainer {
      async onMessage (m) {
        if (!runs) {
          runs++
          const [portRef1, portRef2] = this.kernel.ports.createChannel()
          const [portRef3, portRef4] = this.kernel.ports.createChannel()

          const message1 = this.kernel.createMessage({
            data: {
              type: First.typeId
            },
            ports: [portRef2]
          })
          const message2 = this.kernel.createMessage({
            data: {
              type: Waiter.typeId
            },
            ports: [portRef4]
          })

          await Promise.all([
            this.kernel.createInstance(message1),
            this.kernel.send(portRef1, this.kernel.createMessage()),
            this.kernel.send(portRef3, this.kernel.createMessage()),
            this.kernel.ports.bind('one', portRef1),
            this.kernel.ports.bind('two', portRef3)
          ])
          return this.kernel.createInstance(message2)
        } else if (runs === 1) {
          runs++
          t.equals(m.data, 'first', 'should recive the first message')
        } else if (runs === 2) {
          runs++
          t.equals(m.data, 'second', 'should recive the second message')
        } else if (runs === 3) {
          runs++
          // t.equals(m.data, 'third', 'should recived the second message')
        }
      }
      static get typeId () {
        return 299
      }
    }

    class First extends BaseContainer {
      onMessage (m) {
        this.kernel.incrementTicks(2)
        return this.kernel.send(m.fromPort, this.kernel.createMessage({
          data: 'second'
        }))
      }
      static get typeId () {
        return 29
      }
    }

    class Waiter extends BaseContainer {
      onMessage (m) {
        return new Promise((resolve, reject) => {
          setTimeout(() => {
            this.kernel.send(m.fromPort, this.kernel.createMessage({
              data: 'first'
            })).then(resolve)
          }, 200)
        })
      }
    }

    try {
      const hypervisor = new Hypervisor(node.dag)

      hypervisor.registerContainer(Root)
      hypervisor.registerContainer(First)
      hypervisor.registerContainer(Waiter)

      const root = await hypervisor.createInstance(new Message({
        data: {
          type: Root.typeId
        }
      }))

      hypervisor.pin(root)
      const [portRef1, portRef2] = root.ports.createChannel()

      const message = root.createMessage()
      await Promise.all([
        root.send(portRef1, message),
        root.ports.bind('first', portRef1),
        root.createInstance(root.createMessage({
          data: {
            type: Root.typeId
          },
          ports: [portRef2]
        }))
      ])
    } catch (e) {
      console.log(e)
    }
  })

  tape('saturation', async t => {
    t.plan(3)
    let runs = 0

    class Root extends BaseContainer {
      onIdle () {}
      async onMessage (m) {
        if (!runs) {
          runs++
          const [portRef1, portRef2] = this.kernel.ports.createChannel()
          const [portRef3, portRef4] = this.kernel.ports.createChannel()

          const message1 = this.kernel.createMessage({
            data: {
              type: First.typeId
            },
            ports: [portRef2]
          })
          const message2 = this.kernel.createMessage({
            data: {
              type: Second.typeId
            },
            ports: [portRef4]
          })

          this.kernel.incrementTicks(6)
          return Promise.all([
            this.kernel.createInstance(message1),
            this.kernel.createInstance(message2),
            this.kernel.send(portRef1, this.kernel.createMessage()),
            this.kernel.send(portRef3, this.kernel.createMessage()),
            this.kernel.ports.bind('one', portRef1),
            this.kernel.ports.bind('two', portRef3)
          ])
        } else if (runs === 1) {
          runs++
          t.equals(m.data, 'first', 'should recive the first message')
        } else if (runs === 2) {
          runs++
          t.equals(m.data, 'second', 'should recive the second message')
        } else if (runs === 3) {
          runs++
          t.equals(m.data, 'third', 'should recived the third message')
        }
      }
      static get typeId () {
        return 299
      }
    }

    class First extends BaseContainer {
      onMessage (m) {
        this.kernel.incrementTicks(2)
        return this.kernel.send(m.fromPort, this.kernel.createMessage({
          data: 'second'
        }))
      }
      static get typeId () {
        return 29
      }
    }

    class Second extends BaseContainer {
      onMessage (m) {
        this.kernel.incrementTicks(3)
        return this.kernel.send(m.fromPort, this.kernel.createMessage({
          data: 'third'
        }))
      }
      static get typeId () {
        return 2
      }
    }

    class Waiter extends BaseContainer {
      onCreation (m) {
        return new Promise((resolve, reject) => {
          setTimeout(() => {
            this.kernel.send(m.ports[0], this.kernel.createMessage({
              data: 'first'
            })).then(resolve)
          }, 200)
        })
      }
    }

    try {
      const hypervisor = new Hypervisor(node.dag)

      hypervisor.registerContainer(Root)
      hypervisor.registerContainer(First)
      hypervisor.registerContainer(Second)
      hypervisor.registerContainer(Waiter)

      let root = await hypervisor.createInstance(new Message({
        data: {
          type: Root.typeId
        }
      }))

      hypervisor.pin(root)

      const [portRef1, portRef2] = root.ports.createChannel()
      const [portRef3, portRef4] = root.ports.createChannel()

      const message = root.createMessage()
      await Promise.all([
        root.send(portRef1, message),
        root.ports.bind('first', portRef1),
        root.createInstance(root.createMessage({
          data: {
            type: Root.typeId
          },
          ports: [portRef2]
        })),
        root.ports.bind('sencond', portRef3),
        root.createInstance(root.createMessage({
          data: {
            type: Waiter.typeId
          },
          ports: [portRef4]
        }))
      ])

      // root = await hypervisor.getInstance(root.id)
      root.incrementTicks(100)
      await root.send(portRef1, root.createMessage({
        data: 'testss'
      }))
      root.shutdown()
    } catch (e) {
      console.log(e)
    }
  })

  tape('send to the same container at the same time', async t => {
    t.plan(2)

    let runs = 0
    let instance

    class Root extends BaseContainer {
      async onMessage (m) {
        let one = this.kernel.ports.get('one')
        if (!one) {
          const [portRef1, portRef2] = this.kernel.ports.createChannel()
          const message1 = this.kernel.createMessage({
            data: {
              type: First.typeId
            },
            ports: [portRef2]
          })
          await this.kernel.createInstance(message1)
          return this.kernel.ports.bind('one', portRef1)
        } else {
          return Promise.all([
            this.kernel.send(one, this.kernel.createMessage()),
            this.kernel.send(one, this.kernel.createMessage())
          ])
        }
      }
      static get typeId () {
        return 299
      }
    }

    class First extends BaseContainer {
      onMessage (m) {
        ++runs
        if (runs === 2) {
          t.equals(instance, this, 'should have same instances')
        } else {
          instance = this
        }
      }
    }

    try {
      const hypervisor = new Hypervisor(node.dag)

      hypervisor.registerContainer(Root)
      hypervisor.registerContainer(First)

      const root = await hypervisor.createInstance(new Message({
        data: {
          type: Root.typeId
        }
      }))

      hypervisor.pin(root)

      const [portRef1, portRef2] = root.ports.createChannel()
      await Promise.all([
        root.ports.bind('first', portRef1),
        root.createInstance(root.createMessage({
          data: {
            type: Root.typeId
          },
          ports: [portRef2]
        }))
      ])

      const message = root.createMessage()
      await root.send(portRef1, message)
      await hypervisor.createStateRoot()
      await root.send(portRef1, root.createMessage())
      await hypervisor.createStateRoot()
      t.equals(runs, 2)
    } catch (e) {
      console.log(e)
    }
  })

  tape('checking ports', async t => {
    t.plan(4)
    const hypervisor = new Hypervisor(node.dag)
    hypervisor.registerContainer(BaseContainer)

    const root = await hypervisor.createInstance(new Message({
      data: {
        type: BaseContainer.typeId
      }
    }))

    hypervisor.pin(root)

    const [portRef1, portRef2] = root.ports.createChannel()
    root.createInstance(root.createMessage({
      data: {
        type: BaseContainer.typeId
      },
      ports: [portRef2]
    }))
    await root.ports.bind('test', portRef1)

    try {
      root.createMessage({
        ports: [portRef1]
      })
    } catch (e) {
      t.pass('should thow if sending a port that is bound')
    }

    try {
      await root.ports.bind('test', portRef1)
    } catch (e) {
      t.pass('should thow if binding an already bound port')
    }

    try {
      const [portRef3] = root.ports.createChannel()
      await root.ports.bind('test', portRef3)
    } catch (e) {
      t.pass('should thow if binding an already bound name')
    }

    await root.ports.unbind('test')
    const message = root.createMessage({
      ports: [portRef1]
    })
    t.equals(message.ports[0], portRef1, 'should create a message if the port is unbound')
  })

  tape('port deletion', async t => {
    const expectedSr = {
      '/': 'zdpuAxKfu5nMTfpz6uHPqXdHZFQDZdRUer8zcQ6nvC4pTQsop'
    }
    class Root extends BaseContainer {
      async onMessage (m) {
        const [portRef1, portRef2] = this.kernel.ports.createChannel()
        const message1 = this.kernel.createMessage({
          data: {
            type: First.typeId
          },
          ports: [portRef2]
        })

        await this.kernel.createInstance(message1)
        await this.kernel.send(portRef1, this.kernel.createMessage())
        this.kernel.incrementTicks(6)
        return this.kernel.ports.bind('one', portRef1)
      }
    }

    class First extends BaseContainer {
      onMessage (m) {
        this.kernel.incrementTicks(2)
        return this.kernel.ports.delete('root')
      }
      static get typeId () {
        return 299
      }
    }

    const hypervisor = new Hypervisor(node.dag)

    hypervisor.registerContainer(Root)
    hypervisor.registerContainer(First)

    const root = await hypervisor.createInstance(new Message({
      data: {
        type: Root.typeId
      }
    }))

    hypervisor.pin(root)

    const [portRef1, portRef2] = root.ports.createChannel()
    await root.ports.bind('first', portRef1)
    await root.createInstance(root.createMessage({
      data: {
        type: Root.typeId
      },
      ports: [portRef2]
    }))

    const message = root.createMessage()
    await root.send(portRef1, message)

    const sr = await hypervisor.createStateRoot()
    t.deepEquals(sr, expectedSr, 'should produce the corret state root')
    await hypervisor.graph.tree(sr, Infinity, true)

    t.end()
  })

  tape('clear unbounded ports', async t => {
    const expectedSr = {
      '/': 'zdpuAxKfu5nMTfpz6uHPqXdHZFQDZdRUer8zcQ6nvC4pTQsop'
    }

    class Root extends BaseContainer {
      onMessage (m) {
        return this.kernel.createInstance(new Message({
          data: {
            type: Root.typeId
          }
        }))
      }
    }

    const hypervisor = new Hypervisor(node.dag)
    hypervisor.registerContainer(Root)

    const root = await hypervisor.createInstance(new Message({
      data: {
        type: Root.typeId
      }
    }))

    hypervisor.pin(root)

    const [portRef1, portRef2] = root.ports.createChannel()
    await root.ports.bind('first', portRef1)
    await root.createInstance(root.createMessage({
      data: {
        type: Root.typeId
      },
      ports: [portRef2]
    }))

    const message = root.createMessage()
    await root.send(portRef1, message)
    const sr = await hypervisor.createStateRoot()
    t.deepEquals(sr, expectedSr, 'should produce the corret state root')

    t.end()
  })

  tape('should remove subgraphs', async t => {
    const expectedSr = {
      '/': 'zdpuAxKfu5nMTfpz6uHPqXdHZFQDZdRUer8zcQ6nvC4pTQsop'
    }
    class Root extends BaseContainer {
      onMessage (m) {
        const [, portRef2] = this.kernel.ports.createChannel()
        return this.kernel.createInstance(this.kernel.createMessage({
          data: {
            type: Sub.typeId
          },
          ports: [portRef2]
        }))
      }
    }

    class Sub extends BaseContainer {
      async onInitailize (message) {
        await this.kernel.ports.bind('root', message.ports[0])
        const [portRef1, portRef2] = this.kernel.ports.createChannel()
        await this.kernel.ports.bind('child', portRef1)
        await this.kernel.createInstance(this.kernel.createMessage({
          data: {
            type: Root.typeId
          },
          ports: [portRef2]
        }))
      }
      static get typeId () {
        return 299
      }
    }

    try {
      const hypervisor = new Hypervisor(node.dag)

      hypervisor.registerContainer(Root)
      hypervisor.registerContainer(Sub)

      const root = await hypervisor.createInstance(new Message({
        data: {
          type: Root.typeId
        }
      }))

      hypervisor.pin(root)

      const [portRef1, portRef2] = root.ports.createChannel()
      await root.ports.bind('first', portRef1)
      await root.createInstance(root.createMessage({
        data: {
          type: Root.typeId
        },
        ports: [portRef2]
      }))

      await root.send(portRef1, root.createMessage())
      const sr = await hypervisor.createStateRoot()

      t.deepEquals(sr, expectedSr, 'should produce the corret state root')
      t.end()
    } catch (e) {
      console.log(e)
    }
  })

  tape('should not remove connected nodes', async t => {
    const expectedSr = {
      '/': 'zdpuAr4A3i1t6B7BkLT9C7DoxwvFnNg74gEzyqhpFj7nqVBy6'
    }
    class Root extends BaseContainer {
      async onMessage (m) {
        if (m.ports.length) {
          const port = this.kernel.ports.get('test1')
          await this.kernel.send(port, m)
          return this.kernel.ports.unbind('test1')
        } else {
          const [portRef1, portRef2] = this.kernel.ports.createChannel()
          await this.kernel.createInstance(this.kernel.createMessage({
            data: {
              type: Sub.typeId
            },
            ports: [portRef2]
          }))
          await this.kernel.ports.bind('test1', portRef1)

          const [portRef3, portRef4] = this.kernel.ports.createChannel()
          await this.kernel.createInstance(this.kernel.createMessage({
            data: {
              type: Sub.typeId
            },
            ports: [portRef4]
          }))
          await this.kernel.ports.bind('test2', portRef3)
          await this.kernel.send(portRef3, this.kernel.createMessage({
            data: 'getChannel'
          }))
        }
      }
    }

    class Sub extends BaseContainer {
      async onMessage (message) {
        if (message.data === 'getChannel') {
          const ports = this.kernel.ports.createChannel()
          await this.kernel.send(message.fromPort, this.kernel.createMessage({
            data: 'bindPort',
            ports: [ports[1]]
          }))
          return this.kernel.ports.bind('channel', ports[0])
        } else if (message.data === 'bindPort') {
          return this.kernel.ports.bind('channel', message.ports[0])
        }
      }
      static get typeId () {
        return 299
      }
    }

    const hypervisor = new Hypervisor(node.dag)

    hypervisor.registerContainer(Root)
    hypervisor.registerContainer(Sub)

    const root = await hypervisor.createInstance(new Message({
      data: {
        type: Root.typeId
      }
    }))

    hypervisor.pin(root)

    const [portRef1, portRef2] = root.ports.createChannel()
    await root.ports.bind('first', portRef1)
    await root.createInstance(root.createMessage({
      data: {
        type: Root.typeId
      },
      ports: [portRef2]
    }))

    await root.send(portRef1, root.createMessage())
    const sr = await hypervisor.createStateRoot()
    t.deepEquals(sr, expectedSr, 'should produce the corret state root')
      // await hypervisor.graph.tree(sr, Infinity)

    t.end()
  })

  tape('should remove multiple subgraphs', async t => {
    const expectedSr = {
      '/': 'zdpuAzYGmZeZsi5Zer7LXCTm1AsmqpUMJAXZnEeFW2UVDZj2P'
    }
    class Root extends BaseContainer {
      onMessage (m) {
        if (m.ports.length) {
          const port = this.kernel.ports.get('test1')
          return Promise.all([
            this.kernel.send(port, m),
            this.kernel.ports.unbind('test1'),
            this.kernel.ports.unbind('test2')
          ])
        } else {
          const [portRef1, portRef2] = this.kernel.ports.createChannel()
          const [portRef3, portRef4] = this.kernel.ports.createChannel()
          return Promise.all([
            this.kernel.createInstance(this.kernel.createMessage({
              data: {
                type: Sub.typeId
              },
              ports: [portRef2]
            })),
            this.kernel.ports.bind('test1', portRef1),
            this.kernel.createInstance(this.kernel.createMessage({
              data: {
                type: Sub.typeId
              },
              ports: [portRef4]
            })),
            this.kernel.ports.bind('test2', portRef3),
            this.kernel.send(portRef3, this.kernel.createMessage({
              data: 'getChannel'
            }))
          ])
        }
      }
    }

    class Sub extends BaseContainer {
      async onMessage (message) {
        if (message.data === 'getChannel') {
          const ports = this.kernel.ports.createChannel()
          await this.kernel.send(message.fromPort, this.kernel.createMessage({
            data: 'bindPort',
            ports: [ports[1]]
          }))
          return this.kernel.ports.bind('channel', ports[0])
        } else if (message.data === 'bindPort') {
          return this.kernel.ports.bind('channel', message.ports[0])
        }
      }
      static get typeId () {
        return 299
      }
    }

    try {
      const hypervisor = new Hypervisor(node.dag)

      hypervisor.registerContainer(Root)
      hypervisor.registerContainer(Sub)

      const root = await hypervisor.createInstance(new Message({
        data: {
          type: Root.typeId
        }
      }))

      hypervisor.pin(root)

      const [portRef1, portRef2] = root.ports.createChannel()
      await Promise.all([
        root.ports.bind('first', portRef1),
        root.createInstance(root.createMessage({
          data: {
            type: Root.typeId
          },
          ports: [portRef2]
        })),
        root.send(portRef1, root.createMessage())
      ])

      const sr = await hypervisor.createStateRoot()
      t.deepEquals(sr, expectedSr, 'should produce the corret state root')

      t.end()
    } catch (e) {
      console.log(e)
    }
  })

  tape('response ports', async t => {
    t.plan(2)
    let runs = 0
    const returnValue = 'this is a test'

    class testVMContainer extends BaseContainer {
      onMessage (m) {
        runs++
        if (runs === 1) {
          return returnValue
        } else {
          t.equals(m.data, returnValue, 'should have correct return value')
        }
      }
    }

    const hypervisor = new Hypervisor(node.dag)
    hypervisor.registerContainer(testVMContainer)

    const rootContainer = await hypervisor.createInstance(new Message({
      data: {
        type: testVMContainer.typeId
      }
    }))

    hypervisor.pin(rootContainer)

    const [portRef1, portRef2] = rootContainer.ports.createChannel()
    const initMessage = rootContainer.createMessage({
      data: {
        type: testVMContainer.typeId
      },
      ports: [portRef2]
    })

    rootContainer.createInstance(initMessage)

    await rootContainer.ports.bind('first', portRef1)
    const message = rootContainer.createMessage()
    const rPort = rootContainer.getResponsePort(message)
    const rPort2 = rootContainer.getResponsePort(message)

    t.equals(rPort2, rPort)

    rootContainer.send(portRef1, message)
    await rootContainer.ports.bind('response', rPort)
  })

  tape('start up', async t => {
    t.plan(1)
    class testVMContainer extends BaseContainer {
      onMessage () {}
      onStartup () {
        t.true(true, 'should start up')
      }
    }

    const hypervisor = new Hypervisor(node.dag)
    hypervisor.registerContainer(testVMContainer)
    const instance = await hypervisor.createInstance(new Message({
      data: {
        type: testVMContainer.typeId
      }
    }))
    hypervisor.getInstance(instance.id)
  })

  tape('large code size', async t => {
    t.plan(1)
    const content = Buffer.from(new ArrayBuffer(1e6))
    class testVMContainer extends BaseContainer {
      onMessage () {}
    }

    const hypervisor = new Hypervisor(node.dag)
    hypervisor.registerContainer(testVMContainer)
    const oldInst = await hypervisor.createInstance(new Message({
      data: {
        type: testVMContainer.typeId,
        code: content
      }
    }))
    const instance = await hypervisor.getInstance(oldInst.id)
    t.equals(content.length, instance.code.length)
  })

  tape('creation service messaging', async t => {
    t.plan(1)
    class TestVMContainer extends BaseContainer {
      async onCreation (m) {
        const creationPort = m.ports[0]
        const [port1, port2] = this.kernel.ports.createChannel()
        await this.kernel.ports.bind('child', port1)

        const message = this.kernel.createMessage({
          data: {
            type: TestVMContainer2.typeId
          },
          ports: [port2]
        })
        return this.kernel.send(creationPort, message)
      }
      onMessage () {

      }
    }

    class TestVMContainer2 extends BaseContainer {
      onMessage () {

      }

      static get typeId () {
        return 66
      }
    }

    const hypervisor = new Hypervisor(node.dag)
    hypervisor.registerContainer(TestVMContainer)
    hypervisor.registerContainer(TestVMContainer2)

    const port = hypervisor.creationService.getPort()

    const root = await hypervisor.createInstance(new Message({
      data: {
        type: TestVMContainer.typeId
      },
      ports: [port]
    }))

    hypervisor.pin(root)

    const stateRoot = await hypervisor.createStateRoot()
      // await hypervisor.graph.tree(hypervisor.state, Infinity, true)
    const expectedSR = {
      '/': 'zdpuAonuhk7ZhdghJh4saaUCskY5mXZ6M9BcV9iAhCanAQx9i'
    }
    t.deepEquals(stateRoot, expectedSR)
  })
})