import { useStore } from 'effector-react'
import * as effector from 'effector'
import { combine } from 'effector'
import { pathOr } from 'ramda'
import React, { useLayoutEffect, useRef } from 'react'
import ReactDOM from 'react-dom'
import { chromeDark, ObjectInspector, ObjectLabel } from 'react-inspector'
import { throttle } from 'lodash'
import './effector-addon.css'


const trackCreateStore = effector.createEvent('trackCreateStore')
const trackCreateEvent = effector.createEvent('trackCreateEvent')
const trackCreateEffect = effector.createEvent('trackCreateEffect')

export function createStore(...params) {
  const store = effector.createStore(...params)
  process.env.NODE_ENV === 'development' && trackCreateStore({
    store,
    params,
  })
  return store
}

export function createEvent(...params) {
  // console.log('createEvent', params)
  const event = effector.createEvent(...params)
  const name = params[0]
  const file = params[1].loc.file
  const module = file.split('/').slice(-1)[0].split('.')[0]

  process.env.NODE_ENV === 'development' && trackCreateEvent({
    event,
    name,
    module,
  })

  return event
}

export function createEffect(...params) {
  // console.log('createEffect', params)
  const effect = effector.createEffect(...params)
  process.env.NODE_ENV === 'development' && trackCreateEffect({
    effect,
    params,
  })
  return effect
}

const toggleVisibility = effector.createEvent('toggleVisibility')
const visibility = effector.createStore(true)
  .on(toggleVisibility, state => !state)

const $winParams = effector.createStoreObject({
  visibility,
})

const getNewPromise = () => new Promise((resolve) => resolver = resolve)
let resolver = null
let sync = Promise.resolve()

const $eventMap = effector.createStore({})
  .on(trackCreateEvent, (state, { event, name, module }) => {
    event.watch(async () => {
      await sync
      sync = getNewPromise()
      debouncedTimeSlice()
      addEvent({ type: 'event', module, name, fullname: `${module}.${name}` })
      resolver && resolver()
    })

    return {
      ...state,
      [module]: [
        ...pathOr([], [module], state),
        `${module}.${name}`,
      ],
    }
  })

const $storeMap = effector.createStore({})
  .on(trackCreateStore, (state, { store, params }) => {
    store.updates.watch(async () => {
      await sync
      sync = getNewPromise()
      debouncedTimeSlice()
      addEvent({ type: 'store', name: store.shortName })
      resolver && resolver()
    })

    return {
      ...state,
      [store.shortName]: store,
    }
  })

const addEvent = effector.createEvent()
const eventCall = addEvent.filter({
  fn: (params) => params.type === 'event',
})

const timeSlice = effector.createEvent()
const debouncedTimeSlice = throttle(timeSlice, 1000, { leading: true, trailing: false })

let eventCounter = 0

const clearStack = effector.createEvent()

const $eventCallStack = effector.createStore([])
  .reset(clearStack)
  .on(addEvent, (state, event) => {
    if (event.type === 'store') {
      const lastEvent = state.slice(-1)[0]
      if (lastEvent) {
        return [...state.slice(0, -1), { ...lastEvent, store: event.name }]
      }
    }
    return [
      ...state.slice(-100),
      { ...event, index: event.type === 'event' ? ++eventCounter : 0 },
    ]
  })
  .on(timeSlice, (state) => [
    ...state,
    { type: 'time', time: Date.now() },
  ])

const $eventCalls = effector.createStore({})
  .reset(clearStack)
  .on(eventCall, (state, { module, name }) => {
    return ({
      ...state,
      [`${module}.${name}`]: pathOr(0, [`${module}.${name}`], state) + 1,
    })
  })


const toggleEventFilter = effector.createEvent()
const toggleEventGroupFilter = effector.createEvent()

const $eventFilter = effector.createStore({})
  .reset(clearStack)
  .on(trackCreateEvent, (state, { event, name, module }) => ({
    ...state,
    [module]: {
      checked: pathOr(true, [module, 'checked'], state),
      data: {
        ...pathOr({}, [module, 'data'], state),
        [`${module}.${name}`]: true,
      },
    },
  }))
  .on(toggleEventFilter, (state, name) => {
    const module = name.split('.')[0]
    const checked = !pathOr(true, [module, 'data', name], state)
    const newState = {
      ...state,
      [module]: {
        // checked: moduleChecked,
        data: {
          ...pathOr({}, [module, 'data'], state),
          [name]: checked,
        },
      },
    }
    const moduleChecked = checked
      ? Object.values(pathOr({}, [module, 'data'], newState)).every(item => item)
      : false
    newState[module].checked = moduleChecked
    return newState
  })
  .on(toggleEventGroupFilter, (state, module) => {
    const checked = !pathOr(true, [module, 'checked'], state)
    return ({
      ...state,
      [module]: {
        checked,
        data: Object.keys(pathOr({}, [module, 'data'], state))
          .reduce((acc, item) => Object.assign(acc, { [item]: checked }), {}),
      },
    })
  })

const $filteredCallStack = combine($eventCallStack, $eventFilter, (eventCallStack, eventFilter) => {
  return eventCallStack.filter(event => {
    if (event.type !== 'event') return event
    return eventFilter[event.module].data[event.fullname]
  })
})

function formatDate(date) {
  let diff = new Date() - date // the difference in milliseconds

  if (diff < 1000) { // less than 1 second
    return 'right now'
  }

  let sec = Math.floor(diff / 1000) // convert diff to seconds

  if (sec < 60) {
    return sec + ' sec. ago'
  }

  let min = Math.floor(diff / 60000) // convert diff to minutes
  if (min < 60) {
    return min + ' min. ago'
  }

  // format the date
  // add leading zeroes to single-digit day/month/hours/minutes
  let d = date
  d = [
    '0' + d.getDate(),
    '0' + (d.getMonth() + 1),
    '' + d.getFullYear(),
    '0' + d.getHours(),
    '0' + d.getMinutes(),
  ].map(component => component.slice(-2)) // take last 2 digits of every component

  // join the components into date
  return d.slice(0, 3).join('.') + ' ' + d.slice(3).join(':')
}

const storeNodeRenderer = ({ depth, name, data, isNonenumerable, expanded }) => {
  switch (depth) {
    case 0:
      return <span style={{ color: 'rgb(232, 234, 246)' }}>Store list</span>
    case 1:
      return typeof data === 'object' || Array.isArray(data)
        ? <span style={{ color: '#9ecbe0' }}>{name}</span>
        : <ObjectLabel
          name={name}
          data={data}
          isNonenumerable={isNonenumerable}
        />
    default:
      return <ObjectLabel name={name} data={data} isNonenumerable={isNonenumerable} />
  }
}

const eventNodeRenderer = (eventCalls, eventFilter) => ({ depth, name, data, isNonenumerable, expanded }) => {
  switch (depth) {
    case 0:
      return <label style={{ color: 'rgb(232, 234, 246)' }}>
        {name}
      </label>

    case 1: {
      return (
        <span style={{ color: '#9ecbe0', lineHeight: 1.2 }}>
          <input
            type="checkbox"
            checked={pathOr(true, [name, 'checked'], eventFilter)}
            onClick={e => {
              e.preventDefault()
              e.stopPropagation()
            }}
            onChange={() => toggleEventGroupFilter(name)}
            style={{
              height: 12,
              width: 12,
              marginLeft: 2,
              marginRight: 5,
              // float: 'left',
            }}
          />
          {name}
        </span>
      )
    }

    case 2: {
      const splitPath = data.split('.')
      const module = splitPath[0]
      const eventName = splitPath.slice(-1)

      return (
        <label style={{ color: 'rgb(161, 198, 89)', lineHeight: 1.2 }}>
          <input
            type="checkbox"
            checked={pathOr(true, [module, 'data', data], eventFilter)}
            onChange={() => toggleEventFilter(data)}
            style={{
              height: 12,
              width: 12,
              marginRight: 5,
              // float: 'left',
            }}
          />
          <span style={{ cursor: 'pointer', color: pathOr(0, [data], eventCalls) ? '#baf742' : 'inherit' }}>
            {eventName}
          </span>
          {eventCalls[data] > 0 && (
            <span style={{ color: 'rgb(232, 234, 246)', paddingLeft: 6 }}>
            [
            <span style={{ color: pathOr(0, [data], eventCalls) ? '#baf742' : 'inherit' }}>
              {eventCalls[data]}
            </span>
            ]
          </span>
          )}
        </label>
      )
    }
    default:
      return null
  }
}

const EventStackItemRenderer = ({ eventCallStack, item, index }) => {
  switch (item.type) {
    case 'store':
      return (
        <div style={{
          borderTop: pathOr('', [index - 1, 'type'], eventCallStack) === 'event' ? '1px dotted #7777' : 'none',
          textAlign: 'right',
          color: '#e0e042',
          padding: '0 10px',
        }}
        >
          {item.name || '<NONAME>'}
        </div>
      )
    case 'event':
      return (
        <div style={{
          color: 'lightgray',
          display: 'flex',
          justifyContent: 'space-between',
          marginTop: pathOr('', [index - 1, 'type'], eventCallStack) === 'store' ? 10 : 0,
          padding: '0 5px 0 2px',
        }}
        >
          <div>
            <span style={{ color: '#789', marginRight: 5 }}>{item.index}.</span>
            <span style={{ color: '#bbb' }}>{item.name || '<NONAME>'}</span>
          </div>
          <div style={{
            flex: '1 0',
            margin: '0 0 12px 10px',
            borderBottom: item.store ? '1px dotted #7777' : 'none',
          }}
          />
          {item.store && (
            <div style={{ marginRight: 10, marginLeft: -1, color: '#777' }}>
              ⭬
            </div>
          )}
          <div style={{
            textAlign: 'right',
            color: '#e0e042',
          }}
          >
            {item.store}
          </div>
        </div>
      )
    case 'time':
      return null
      return (
        <div style={{ textAlign: 'center', color: '#9ecbe0', marginTop: 10, borderBottom: '1px dotted #7771' }}>
          {formatDate(item.time)}
        </div>
      )
    default:
      return (
        <div style={{ color: 'red', marginTop: 5 }}>
          Unknown event
        </div>
      )
  }
}

// const tick = effector.createEvent()
// const $refresher = effector.createStore(Date.now())
//   .on(tick, state => Date.now())
//
// setInterval(tick, 5000)

export const DevToolWindow = () => {
  const winParams = useStore($winParams)
  const eventCallStack = useStore($filteredCallStack)
  const eventCalls = useStore($eventCalls)
  const storeMap = useStore($storeMap)
  const eventMap = useStore($eventMap)
  const storeList = Object.keys(storeMap)
  const eventFilter = useStore($eventFilter)
  // const refresher = useStore($refresher)
  const ref = useRef(null)

  useLayoutEffect(() => {
    if (ref.current) {
      ref.current.scrollTop = ref.current.scrollHeight
    }
  }, [eventCallStack[eventCallStack.length - 1]])

  // if (!winParams.visibility) return null

  const storeObject = storeList.reduce((acc, storeName) =>
    Object.assign(acc, { [storeName]: storeMap[storeName].getState() }), {},
  )

  return (
    <div
      style={{
        fontSize: 16,
        position: 'absolute',
        width: winParams.visibility ? '50%' : 0,
        transition: 'width 50ms',
        top: 0,
        right: 0,
        bottom: 0,
        backgroundColor: 'rgb(53, 59, 70)',
        zIndex: 9999999,
        boxShadow: '-4px 0 10px rgba(0, 0, 0, .35)',
        overflow: 'auto',
        color: 'rgb(232, 234, 246)',
      }}
      onMouseDown={e => e.stopPropagation()}
      onMouseUp={e => e.stopPropagation()}
      onClick={e => e.stopPropagation()}
    >
      <div style={{
        padding: '5px 10px',
        backgroundColor: 'rgba(0, 0, 0, .25)',
        width: '100%',
        fontSize: 20,
        borderBottom: '1px solid rgba(255, 255, 255, .25)',
      }}
      >
        Effector Inspector
      </div>

      <div style={{
        display: 'flex',
        padding: 5,
        height: 'calc(100% - 42px)',
      }}
      >
        <div style={{
          flex: '0 0 40%',
          display: 'flex',
          flexDirection: 'column',
          overflow: 'auto',
        }}
        >
          <div style={{
            height: 290,
            marginBottom: 10,
            overflow: 'auto',
            border: '1px solid #555',
            backgroundColor: '#2A2F3A',
            userSelect: 'none',
          }}
          >
            <ObjectInspector
              nodeRenderer={eventNodeRenderer(eventCalls, eventFilter)}
              expandLevel={1}
              data={eventMap}
              theme={{
                ...chromeDark,
                BASE_FONT_SIZE: '14px',
                TREENODE_FONT_SIZE: '14px',
                OBJECT_NAME_COLOR: '#9ecbe0',
                OBJECT_VALUE_STRING_COLOR: 'rgb(161, 198, 89)',
                OBJECT_VALUE_BOOLEAN_COLOR: 'rgb(252, 109, 36)',
                BASE_BACKGROUND_COLOR: '#2A2F3A',
              }}
              name='Event list'
            />
          </div>

          <div style={{ display: 'flex', justifyContent: 'space-between', marginBottom: 5 }}>
            <div>Events stack:</div>
            <div className="button" onClick={clearStack}>
              Clear
            </div>
          </div>
          <div
            ref={ref}
            style={{
              flex: '1 0 60%',
              overflow: 'auto',
              border: '1px solid #555',
              backgroundColor: '#2A2F3A',
            }}
          >
            {eventCallStack.map((item, index) => (
              <EventStackItemRenderer key={index} index={index} item={item} eventCallStack={eventCallStack} />
            ))}
          </div>
        </div>

        <div style={{
          flex: '1 0',
          overflow: 'auto',
          marginLeft: 5,
          border: '1px solid #555',
          backgroundColor: '#2A2F3A',
          padding: 5,
        }}
        >
          <ObjectInspector
            style={{ border: '5px solid red' }}
            nodeRenderer={storeNodeRenderer}
            expandLevel={1}
            data={storeObject}
            theme={{
              ...chromeDark,
              BASE_FONT_SIZE: '14px',
              TREENODE_FONT_SIZE: '14px',
              OBJECT_NAME_COLOR: '#9ecbe0',
              OBJECT_VALUE_STRING_COLOR: 'rgb(161, 198, 89)',
              OBJECT_VALUE_BOOLEAN_COLOR: 'rgb(252, 109, 36)',
              BASE_BACKGROUND_COLOR: '#2A2F3A',
            }}
          />
        </div>
      </div>
    </div>
  )
}

export function bindEffectorInspectorHotKey({ alt = false, ctrl = false, shift = false, key = '`' } = {}) {
  window.addEventListener('keydown', (e) => {
    e.key === key && e.altKey === alt && e.ctrlKey === ctrl && e.shiftKey === shift && toggleVisibility()
  })
}

export const effectorInspector = (hotKeyOptions) => {
  bindEffectorInspectorHotKey(hotKeyOptions)

  const devtool = document.createElement('div')
  ReactDOM.render(<DevToolWindow />, devtool)
  document.body.appendChild(devtool)
}