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",
      })
  }
}