import { Component } from 'react'
import styled from 'styled-components'
import fetch from 'isomorphic-unfetch'
import { object, string, number } from 'yup'
import Widget from '../../widget'
import Table, { Th, Td } from '../../table'
import Badge from '../../badge'
import { basicAuthHeader } from '../../../lib/auth'

const alertColor = ({ theme, children }) => {
  switch (children) {
    case 'ERROR':
      return theme.palette.errorColor
    case 'WARN':
      return theme.palette.warnColor
    default: // OK
      return theme.palette.successColor
  }
}
const Alert = styled.span`
  color: ${alertColor};
`

const sonarBadgeColor = ({ theme, children }) => {
  switch (children) {
    case 'A':
      return theme.palette.successColor
    case 'B':
      return theme.palette.successSecondaryColor
    case 'C':
      return theme.palette.warnColor
    case 'D':
      return theme.palette.warnSecondaryColor
    case 'E':
      return theme.palette.errorColor
    default:
      return 'transparent'
  }
}
const SonarBadge = styled(Badge)`
  background-color: ${sonarBadgeColor};
`

const schema = object().shape({
  url: string().url().required(),
  componentKey: string().required(),
  interval: number(),
  title: string(),
  authKey: string()
})

export default class SonarQube extends Component {
  static defaultProps = {
    interval: 1000 * 60 * 5,
    title: 'SonarQube'
  }

  state = {
    measures: [],
    loading: true,
    error: false
  }

  componentDidMount () {
    schema.validate(this.props)
      .then(() => this.fetchInformation())
      .catch((err) => {
        console.error(`${err.name} @ ${this.constructor.name}`, err.errors)
        this.setState({ error: true, loading: false })
      })
  }

  componentWillUnmount () {
    clearTimeout(this.timeout)
  }

  async fetchInformation () {
    const { authKey, url, componentKey } = this.props
    const opts = authKey ? { headers: basicAuthHeader(authKey) } : {}

    // https://docs.sonarqube.org/display/SONAR/Metric+Definitions
    const metricKeys = [
      'alert_status', 'reliability_rating', 'bugs', 'security_rating',
      'vulnerabilities', 'sqale_rating', 'code_smells', 'coverage',
      'duplicated_lines_density'
    ].join(',')

    try {
      const res = await fetch(`${url}/api/measures/component?componentKey=${componentKey}&metricKeys=${metricKeys}`, opts)
      const json = await res.json()

      this.setState({ error: false, loading: false, measures: json.component.measures })
    } catch (error) {
      this.setState({ error: true, loading: false })
    } finally {
      this.timeout = setTimeout(() => this.fetchInformation(), this.props.interval)
    }
  }

  getMetricValue = (measures, metricKey) => {
    const result = measures.filter(measure => measure.metric === metricKey)
    return result.length ? result[0].value : ''
  }

  getRatingValue = (measures, metricKey) => {
    const value = this.getMetricValue(measures, metricKey)

    switch (value) {
      case '1.0':
        return 'A'
      case '2.0':
        return 'B'
      case '3.0':
        return 'C'
      case '4.0':
        return 'D'
      case '5.0':
        return 'E'
    }

    return '?'
  }

  render () {
    const { error, loading, measures } = this.state
    const { title } = this.props

    const alertStatus = this.getMetricValue(measures, 'alert_status')
    const reliabilityRating = this.getRatingValue(measures, 'reliability_rating')
    const bugs = this.getMetricValue(measures, 'bugs')
    const securityRating = this.getRatingValue(measures, 'security_rating')
    const vulnerabilities = this.getMetricValue(measures, 'vulnerabilities')
    const sqaleRating = this.getRatingValue(measures, 'sqale_rating')
    const codeSmells = this.getMetricValue(measures, 'code_smells')
    const coverage = this.getMetricValue(measures, 'coverage')
    const duplicatedLinesDensity = this.getMetricValue(measures, 'duplicated_lines_density')

    return (
      <Widget title={title} loading={loading} error={error}>
        <Table>
          <tbody>
            <tr>
              <Th>Quality Gate:</Th>
              <Td><Alert>{alertStatus}</Alert></Td>
            </tr>

            <tr>
              <Th>Reliability:</Th>
              <Td>
                <SonarBadge>{reliabilityRating}</SonarBadge> <small>({bugs})</small>
              </Td>
            </tr>

            <tr>
              <Th>Security:</Th>
              <Td>
                <SonarBadge>{securityRating}</SonarBadge> <small>({vulnerabilities})</small>
              </Td>
            </tr>

            <tr>
              <Th>Maintainability:</Th>
              <Td>
                <SonarBadge>{sqaleRating}</SonarBadge> <small>({codeSmells})</small>
              </Td>
            </tr>

            <tr>
              <Th>Coverage:</Th>
              <Td>{coverage}%</Td>
            </tr>

            <tr>
              <Th>Duplications:</Th>
              <Td>{duplicatedLinesDensity}%</Td>
            </tr>
          </tbody>
        </Table>
      </Widget>
    )
  }
}