import { logger } from '@scandic-hotels/common/logger'

import type { IntlShape } from 'react-intl'
import type { AlternateOpeningHours, OpeningHours } from './openingHoursTypes'

export function getGroupedOpeningHours(
  openingHours: OpeningHours | AlternateOpeningHours,
  intl: IntlShape
): string[] {
  const closedMsg = intl.formatMessage({
    id: 'openingHours.closed',
    defaultMessage: 'Closed',
  })
  const alwaysOpenMsg = intl.formatMessage({
    id: 'openingHours.alwaysOpen',
    defaultMessage: 'Always open',
  })

  // In order
  const weekdayDefinitions = [
    {
      key: 'monday',
      label: intl.formatMessage({
        id: 'common.monday',
        defaultMessage: 'Monday',
      }),
    },
    {
      key: 'tuesday',
      label: intl.formatMessage({
        id: 'common.tuesday',
        defaultMessage: 'Tuesday',
      }),
    },
    {
      key: 'wednesday',
      label: intl.formatMessage({
        id: 'common.wednesday',
        defaultMessage: 'Wednesday',
      }),
    },
    {
      key: 'thursday',
      label: intl.formatMessage({
        id: 'common.thursday',
        defaultMessage: 'Thursday',
      }),
    },
    {
      key: 'friday',
      label: intl.formatMessage({
        id: 'common.friday',
        defaultMessage: 'Friday',
      }),
    },
    {
      key: 'saturday',
      label: intl.formatMessage({
        id: 'common.saturday',
        defaultMessage: 'Saturday',
      }),
    },
    {
      key: 'sunday',
      label: intl.formatMessage({
        id: 'common.sunday',
        defaultMessage: 'Sunday',
      }),
    },
  ] as const

  const groupedOpeningHours: string[] = []

  let rangeWeekdays: string[] = []
  let rangeValue = ''

  for (let i = 0, n = weekdayDefinitions.length; i < n; ++i) {
    const weekdayDefinition = weekdayDefinitions[i]
    const weekday = openingHours[weekdayDefinition.key]
    const label = weekdayDefinition.label

    if (weekday) {
      let newValue = null

      if (weekday.alwaysOpen) {
        newValue = alwaysOpenMsg
      } else if (weekday.isClosed) {
        newValue = closedMsg
      } else if (weekday.openingTime && weekday.closingTime) {
        newValue = `${weekday.openingTime}-${weekday.closingTime}`
      }

      if (newValue !== null) {
        if (rangeValue === newValue) {
          if (rangeWeekdays.length > 1) {
            rangeWeekdays.splice(-1, 1, label) // Replace last element
          } else {
            rangeWeekdays.push(label)
          }
        } else {
          if (rangeValue) {
            groupedOpeningHours.push(
              `${rangeWeekdays.join('-')}: ${rangeValue}`
            )
          }
          rangeValue = newValue
          rangeWeekdays = [label]
        }
      }
      if (rangeValue && i === n - 1) {
        // Flush everything at the end
        groupedOpeningHours.push(`${rangeWeekdays.join('-')}: ${rangeValue}`)
      }
    } else if (rangeValue) {
      groupedOpeningHours.push(`${rangeWeekdays.join('-')}: ${rangeValue}`)
      rangeValue = ''
      rangeWeekdays = []
    }
  }
  return groupedOpeningHours
}

export function getTranslatedName(name: string, intl: IntlShape) {
  const lowercaseName = name.toLowerCase()
  switch (lowercaseName) {
    case 'breakfast':
      return intl.formatMessage({
        id: 'common.breakfast',
        defaultMessage: 'Breakfast',
      })
    case 'brunch':
      return intl.formatMessage({
        id: 'common.brunch',
        defaultMessage: 'Brunch',
      })
    case 'after work':
      return intl.formatMessage({
        id: 'common.afterwork',
        defaultMessage: 'After Work',
      })
    case 'cafe':
      return intl.formatMessage({
        id: 'common.cafe',
        defaultMessage: 'Café',
      })
    case 'lunch':
      return intl.formatMessage({
        id: 'common.lunch',
        defaultMessage: 'Lunch',
      })
    case 'dinner':
      return intl.formatMessage({
        id: 'common.dinner',
        defaultMessage: 'Dinner',
      })
    case 'bar':
      return intl.formatMessage({
        id: 'common.bar',
        defaultMessage: 'Bar',
      })
    case 'snacks & drinks':
      return intl.formatMessage({
        id: 'common.snacks&drinks',
        defaultMessage: 'Snacks & drinks',
      })
    case 'takeaway':
      return intl.formatMessage({
        id: 'common.takeaway',
        defaultMessage: 'Takeaway',
      })
    case 'changes':
      return intl.formatMessage({
        id: 'common.changes',
        defaultMessage: 'Changes',
      })
    case 'live events':
      return intl.formatMessage({
        id: 'common.liveEvents',
        defaultMessage: 'Live events',
      })
    case 'terrace':
      return intl.formatMessage({
        id: 'common.terrace',
        defaultMessage: 'Terrace',
      })
    default:
      logger.warn(`Unsupported name given: ${name}`)

      return intl.formatMessage({
        id: 'common.NA',
        defaultMessage: 'N/A',
      })
  }
}