import { computed } from 'vue';
import { t as toDate, g as getDaysInMonth } from './comparators.js';
import { b as isAcceptableSegmentKey, i as isSegmentNavigationKey, c as isNumberString } from './segment.js';
import { u as useKbd } from '../shared/useKbd.js';

function commonSegmentAttrs(props) {
  return {
    role: "spinbutton",
    contenteditable: true,
    tabindex: props.disabled ? void 0 : 0,
    spellcheck: false,
    inputmode: "numeric",
    autocorrect: "off",
    enterkeyhint: "next",
    style: "caret-color: transparent;"
  };
}
function daySegmentAttrs(props) {
  const { segmentValues, placeholder } = props;
  const isEmpty = segmentValues.day === null;
  const date = segmentValues.day ? placeholder.set({ day: segmentValues.day }) : placeholder;
  const valueNow = date.day;
  const valueMin = 1;
  const valueMax = getDaysInMonth(date);
  const valueText = isEmpty ? "Empty" : `${valueNow}`;
  return {
    ...commonSegmentAttrs(props),
    "aria-label": "day,",
    "aria-valuemin": valueMin,
    "aria-valuemax": valueMax,
    "aria-valuenow": valueNow,
    "aria-valuetext": valueText,
    "data-placeholder": isEmpty ? "" : void 0
  };
}
function monthSegmentAttrs(props) {
  const { segmentValues, placeholder, formatter } = props;
  const isEmpty = segmentValues.month === null;
  const date = segmentValues.month ? placeholder.set({ month: segmentValues.month }) : placeholder;
  const valueNow = date.month;
  const valueMin = 1;
  const valueMax = 12;
  const valueText = isEmpty ? "Empty" : `${valueNow} - ${formatter.fullMonth(toDate(date))}`;
  return {
    ...commonSegmentAttrs(props),
    "aria-label": "month, ",
    "contenteditable": true,
    "aria-valuemin": valueMin,
    "aria-valuemax": valueMax,
    "aria-valuenow": valueNow,
    "aria-valuetext": valueText,
    "data-placeholder": isEmpty ? "" : void 0
  };
}
function yearSegmentAttrs(props) {
  const { segmentValues, placeholder } = props;
  const isEmpty = segmentValues.year === null;
  const date = segmentValues.year ? placeholder.set({ year: segmentValues.year }) : placeholder;
  const valueMin = 1;
  const valueMax = 9999;
  const valueNow = date.year;
  const valueText = isEmpty ? "Empty" : `${valueNow}`;
  return {
    ...commonSegmentAttrs(props),
    "aria-label": "year, ",
    "aria-valuemin": valueMin,
    "aria-valuemax": valueMax,
    "aria-valuenow": valueNow,
    "aria-valuetext": valueText,
    "data-placeholder": isEmpty ? "" : void 0
  };
}
function hourSegmentAttrs(props) {
  const { segmentValues, hourCycle, placeholder } = props;
  if (!("hour" in segmentValues) || !("hour" in placeholder))
    return {};
  const isEmpty = segmentValues.hour === null;
  const date = segmentValues.hour ? placeholder.set({ hour: segmentValues.hour }) : placeholder;
  const valueMin = hourCycle === 12 ? 1 : 0;
  const valueMax = hourCycle === 12 ? 12 : 23;
  const valueNow = date.hour;
  const valueText = isEmpty ? "Empty" : `${valueNow} ${segmentValues.dayPeriod ?? ""}`;
  return {
    ...commonSegmentAttrs(props),
    "aria-label": "hour, ",
    "aria-valuemin": valueMin,
    "aria-valuemax": valueMax,
    "aria-valuenow": valueNow,
    "aria-valuetext": valueText,
    "data-placeholder": isEmpty ? "" : void 0
  };
}
function minuteSegmentAttrs(props) {
  const { segmentValues, placeholder } = props;
  if (!("minute" in segmentValues) || !("minute" in placeholder))
    return {};
  const isEmpty = segmentValues.minute === null;
  const date = segmentValues.minute ? placeholder.set({ minute: segmentValues.minute }) : placeholder;
  const valueNow = date.minute;
  const valueMin = 0;
  const valueMax = 59;
  const valueText = isEmpty ? "Empty" : `${valueNow}`;
  return {
    ...commonSegmentAttrs(props),
    "aria-label": "minute, ",
    "aria-valuemin": valueMin,
    "aria-valuemax": valueMax,
    "aria-valuenow": valueNow,
    "aria-valuetext": valueText,
    "data-placeholder": isEmpty ? "" : void 0
  };
}
function secondSegmentAttrs(props) {
  const { segmentValues, placeholder } = props;
  if (!("second" in segmentValues) || !("second" in placeholder))
    return {};
  const isEmpty = segmentValues.second === null;
  const date = segmentValues.second ? placeholder.set({ second: segmentValues.second }) : placeholder;
  const valueNow = date.second;
  const valueMin = 0;
  const valueMax = 59;
  const valueText = isEmpty ? "Empty" : `${valueNow}`;
  return {
    ...commonSegmentAttrs(props),
    "aria-label": "second, ",
    "aria-valuemin": valueMin,
    "aria-valuemax": valueMax,
    "aria-valuenow": valueNow,
    "aria-valuetext": valueText,
    "data-placeholder": isEmpty ? "" : void 0
  };
}
function dayPeriodSegmentAttrs(props) {
  const { segmentValues } = props;
  if (!("dayPeriod" in segmentValues))
    return {};
  const valueMin = 0;
  const valueMax = 12;
  const valueNow = segmentValues.hour ? segmentValues.hour > 12 ? segmentValues.hour - 12 : segmentValues.hour : 0;
  const valueText = segmentValues.dayPeriod ?? "AM";
  return {
    ...commonSegmentAttrs(props),
    "inputmode": "text",
    "aria-label": "AM/PM",
    "aria-valuemin": valueMin,
    "aria-valuemax": valueMax,
    "aria-valuenow": valueNow,
    "aria-valuetext": valueText
  };
}
function literalSegmentAttrs(_props) {
  return {
    "aria-hidden": true,
    "data-segment": "literal"
  };
}
function timeZoneSegmentAttrs(props) {
  return {
    "role": "textbox",
    "aria-label": "timezone, ",
    "data-readonly": true,
    "data-segment": "timeZoneName",
    "tabindex": props.disabled ? void 0 : 0,
    "style": "caret-color: transparent;"
  };
}
function eraSegmentAttrs(props) {
  const { segmentValues, placeholder } = props;
  const valueMin = 0;
  const valueMax = 0;
  const valueNow = 0;
  const valueText = "era" in segmentValues ? segmentValues.era : placeholder.era;
  return {
    ...commonSegmentAttrs(props),
    "aria-label": "era",
    "aria-valuemin": valueMin,
    "aria-valuemax": valueMax,
    "aria-valuenow": valueNow,
    "aria-valuetext": valueText
  };
}
const segmentBuilders = {
  day: {
    attrs: daySegmentAttrs
  },
  month: {
    attrs: monthSegmentAttrs
  },
  year: {
    attrs: yearSegmentAttrs
  },
  hour: {
    attrs: hourSegmentAttrs
  },
  minute: {
    attrs: minuteSegmentAttrs
  },
  second: {
    attrs: secondSegmentAttrs
  },
  dayPeriod: {
    attrs: dayPeriodSegmentAttrs
  },
  literal: {
    attrs: literalSegmentAttrs
  },
  timeZoneName: {
    attrs: timeZoneSegmentAttrs
  },
  era: {
    attrs: eraSegmentAttrs
  }
};
function useDateField(props) {
  const kbd = useKbd();
  function minuteSecondIncrementation({ e, part, dateRef, prevValue }) {
    const step = props.step.value[part] ?? 1;
    const sign = e.key === kbd.ARROW_UP ? step : -step;
    const min = 0;
    const max = 59;
    if (prevValue === null)
      return sign > 0 ? min : max;
    const cycleArgs = [part, sign];
    return dateRef.set({ [part]: prevValue }).cycle(...cycleArgs)[part];
  }
  function deleteValue(prevValue) {
    props.hasLeftFocus.value = false;
    if (prevValue === null)
      return prevValue;
    const str = prevValue.toString();
    if (str.length === 1) {
      props.modelValue.value = void 0;
      return null;
    }
    return Number.parseInt(str.slice(0, -1));
  }
  function dateTimeValueIncrementation({ e, part, dateRef, prevValue, hourCycle }) {
    const step = props.step.value[part] ?? 1;
    const sign = e.key === kbd.ARROW_UP ? step : -step;
    if (prevValue === null)
      return dateRef[part];
    if (part === "hour" && "hour" in dateRef) {
      const cycleArgs2 = [part, sign, { hourCycle }];
      return dateRef.set({ [part]: prevValue }).cycle(...cycleArgs2)[part];
    }
    const cycleArgs = [part, sign];
    if (part === "day") {
      return dateRef.set({
        [part]: prevValue,
        /**
         * Edge case for the day field:
         *
         * 1. If the month is filled,
         *   we need to ensure that the day snaps to the maximum value of that month.
         * 2. If the month is not filled,
         *   we default to the month with the maximum number of days (here just using January, 31 days),
         *   so that user can input any possible day.
         */
        month: props.segmentValues.value.month ?? 1
      }).cycle(...cycleArgs)[part];
    }
    return dateRef.set({ [part]: prevValue }).cycle(...cycleArgs)[part];
  }
  function updateDayOrMonth(max, num, prev) {
    let moveToNext = false;
    const maxStart = Math.floor(max / 10);
    if (props.hasLeftFocus.value) {
      props.hasLeftFocus.value = false;
      prev = null;
    }
    if (prev === null) {
      if (num === 0) {
        props.lastKeyZero.value = true;
        return { value: null, moveToNext };
      }
      if (props.lastKeyZero.value || num > maxStart) {
        moveToNext = true;
      }
      props.lastKeyZero.value = false;
      return { value: num, moveToNext };
    }
    const digits = prev.toString().length;
    const total = Number.parseInt(prev.toString() + num.toString());
    if (digits === 2 || total > max) {
      if (num > maxStart || total > max) {
        moveToNext = true;
      }
      return { value: num, moveToNext };
    }
    moveToNext = true;
    return { value: total, moveToNext };
  }
  function updateMinuteOrSecond(num, prev) {
    const max = 59;
    let moveToNext = false;
    const maxStart = Math.floor(max / 10);
    if (props.hasLeftFocus.value) {
      props.hasLeftFocus.value = false;
      prev = null;
    }
    if (prev === null) {
      if (num === 0) {
        props.lastKeyZero.value = true;
        return { value: 0, moveToNext };
      }
      if (props.lastKeyZero.value || num > maxStart) {
        moveToNext = true;
      }
      props.lastKeyZero.value = false;
      return { value: num, moveToNext };
    }
    const digits = prev.toString().length;
    const total = Number.parseInt(prev.toString() + num.toString());
    if (digits === 2 || total > max) {
      if (num > maxStart) {
        moveToNext = true;
      }
      return { value: num, moveToNext };
    }
    moveToNext = true;
    return { value: total, moveToNext };
  }
  function updateHour(num, prev) {
    const max = 24;
    let moveToNext = false;
    const maxStart = Math.floor(max / 10);
    if (props.hasLeftFocus.value) {
      props.hasLeftFocus.value = false;
      prev = null;
    }
    if (prev === null) {
      if (num === 0) {
        props.lastKeyZero.value = true;
        return { value: 0, moveToNext };
      }
      if (props.lastKeyZero.value || num > maxStart) {
        moveToNext = true;
      }
      props.lastKeyZero.value = false;
      return { value: num, moveToNext };
    }
    const digits = prev.toString().length;
    const total = Number.parseInt(prev.toString() + num.toString());
    if (digits === 2 || total > max) {
      if (num > maxStart) {
        moveToNext = true;
      }
      return { value: num, moveToNext };
    }
    moveToNext = true;
    return { value: total, moveToNext };
  }
  function updateYear(num, prev) {
    let moveToNext = false;
    if (props.hasLeftFocus.value) {
      props.hasLeftFocus.value = false;
      prev = null;
    }
    if (prev === null)
      return { value: num === 0 ? 1 : num, moveToNext };
    const str = prev.toString() + num.toString();
    if (str.length > 4)
      return { value: num === 0 ? 1 : num, moveToNext };
    if (str.length === 4)
      moveToNext = true;
    const int = Number.parseInt(str);
    return { value: int, moveToNext };
  }
  const attributes = computed(() => segmentBuilders[props.part]?.attrs({
    disabled: props.disabled.value,
    placeholder: props.placeholder.value,
    hourCycle: props.hourCycle,
    segmentValues: props.segmentValues.value,
    formatter: props.formatter
  }) ?? {});
  function handleDaySegmentKeydown(e) {
    if (!isAcceptableSegmentKey(e.key) || isSegmentNavigationKey(e.key))
      return;
    const prevValue = props.segmentValues.value.day;
    if (e.key === kbd.ARROW_DOWN || e.key === kbd.ARROW_UP) {
      props.segmentValues.value.day = dateTimeValueIncrementation({ e, part: "day", dateRef: props.placeholder.value, prevValue });
      return;
    }
    if (isNumberString(e.key)) {
      const num = Number.parseInt(e.key);
      const segmentMonthValue = props.segmentValues.value.month;
      const daysInMonth = segmentMonthValue ? getDaysInMonth(props.placeholder.value.set({ month: segmentMonthValue })) : 31;
      const { value, moveToNext } = updateDayOrMonth(daysInMonth, num, prevValue);
      props.segmentValues.value.day = value;
      if (moveToNext)
        props.focusNext();
    }
    if (e.key === kbd.BACKSPACE) {
      props.hasLeftFocus.value = false;
      props.segmentValues.value.day = deleteValue(prevValue);
    }
  }
  function handleMonthSegmentKeydown(e) {
    if (!isAcceptableSegmentKey(e.key) || isSegmentNavigationKey(e.key))
      return;
    const prevValue = props.segmentValues.value.month;
    if (e.key === kbd.ARROW_DOWN || e.key === kbd.ARROW_UP) {
      props.segmentValues.value.month = dateTimeValueIncrementation({ e, part: "month", dateRef: props.placeholder.value, prevValue });
      return;
    }
    if (isNumberString(e.key)) {
      const num = Number.parseInt(e.key);
      const { value, moveToNext } = updateDayOrMonth(12, num, prevValue);
      props.segmentValues.value.month = value;
      if (moveToNext)
        props.focusNext();
    }
    if (e.key === kbd.BACKSPACE) {
      props.hasLeftFocus.value = false;
      props.segmentValues.value.month = deleteValue(prevValue);
    }
  }
  function handleYearSegmentKeydown(e) {
    if (!isAcceptableSegmentKey(e.key) || isSegmentNavigationKey(e.key))
      return;
    const prevValue = props.segmentValues.value.year;
    if (e.key === kbd.ARROW_DOWN || e.key === kbd.ARROW_UP) {
      props.segmentValues.value.year = dateTimeValueIncrementation({ e, part: "year", dateRef: props.placeholder.value, prevValue });
      return;
    }
    if (isNumberString(e.key)) {
      const num = Number.parseInt(e.key);
      const { value, moveToNext } = updateYear(num, prevValue);
      props.segmentValues.value.year = value;
      if (moveToNext)
        props.focusNext();
    }
    if (e.key === kbd.BACKSPACE) {
      props.hasLeftFocus.value = false;
      props.segmentValues.value.year = deleteValue(prevValue);
    }
  }
  function handleHourSegmentKeydown(e) {
    const dateRef = props.placeholder.value;
    if (!isAcceptableSegmentKey(e.key) || isSegmentNavigationKey(e.key) || !("hour" in dateRef) || !("hour" in props.segmentValues.value))
      return;
    const prevValue = props.segmentValues.value.hour;
    const hourCycle = props.hourCycle;
    if (e.key === kbd.ARROW_UP || e.key === kbd.ARROW_DOWN) {
      props.segmentValues.value.hour = dateTimeValueIncrementation({ e, part: "hour", dateRef: props.placeholder.value, prevValue, hourCycle });
      if ("dayPeriod" in props.segmentValues.value) {
        if (props.segmentValues.value.hour < 12)
          props.segmentValues.value.dayPeriod = "AM";
        else if (props.segmentValues.value.hour)
          props.segmentValues.value.dayPeriod = "PM";
      }
      return;
    }
    if (isNumberString(e.key)) {
      const num = Number.parseInt(e.key);
      const { value, moveToNext } = updateHour(num, prevValue);
      if ("dayPeriod" in props.segmentValues.value && value && value > 12)
        props.segmentValues.value.dayPeriod = "PM";
      else if ("dayPeriod" in props.segmentValues.value && value)
        props.segmentValues.value.dayPeriod = "AM";
      props.segmentValues.value.hour = value;
      if (moveToNext)
        props.focusNext();
    }
    if (e.key === kbd.BACKSPACE) {
      props.hasLeftFocus.value = false;
      props.segmentValues.value.hour = deleteValue(prevValue);
    }
  }
  function handleMinuteSegmentKeydown(e) {
    const dateRef = props.placeholder.value;
    if (!isAcceptableSegmentKey(e.key) || isSegmentNavigationKey(e.key) || !("minute" in dateRef) || !("minute" in props.segmentValues.value))
      return;
    const prevValue = props.segmentValues.value.minute;
    props.segmentValues.value.minute = minuteSecondIncrementation({ e, part: "minute", dateRef: props.placeholder.value, prevValue });
    if (isNumberString(e.key)) {
      const num = Number.parseInt(e.key);
      const { value, moveToNext } = updateMinuteOrSecond(num, prevValue);
      props.segmentValues.value.minute = value;
      if (moveToNext)
        props.focusNext();
    }
    if (e.key === kbd.BACKSPACE) {
      props.hasLeftFocus.value = false;
      props.segmentValues.value.minute = deleteValue(prevValue);
    }
  }
  function handleSecondSegmentKeydown(e) {
    const dateRef = props.placeholder.value;
    if (!isAcceptableSegmentKey(e.key) || isSegmentNavigationKey(e.key) || !("second" in dateRef) || !("second" in props.segmentValues.value))
      return;
    const prevValue = props.segmentValues.value.second;
    props.segmentValues.value.second = minuteSecondIncrementation({ e, part: "second", dateRef: props.placeholder.value, prevValue });
    if (isNumberString(e.key)) {
      const num = Number.parseInt(e.key);
      const { value, moveToNext } = updateMinuteOrSecond(num, prevValue);
      props.segmentValues.value.second = value;
      if (moveToNext)
        props.focusNext();
    }
    if (e.key === kbd.BACKSPACE) {
      props.hasLeftFocus.value = false;
      props.segmentValues.value.second = deleteValue(prevValue);
    }
  }
  function handleDayPeriodSegmentKeydown(e) {
    if ((!isAcceptableSegmentKey(e.key) || isSegmentNavigationKey(e.key)) && e.key !== "a" && e.key !== "p" || !("hour" in props.placeholder.value) || !("dayPeriod" in props.segmentValues.value))
      return;
    if (e.key === kbd.ARROW_UP || e.key === kbd.ARROW_DOWN) {
      if (props.segmentValues.value.dayPeriod === "AM") {
        props.segmentValues.value.dayPeriod = "PM";
        props.segmentValues.value.hour = props.segmentValues.value.hour + 12;
        return;
      }
      props.segmentValues.value.dayPeriod = "AM";
      props.segmentValues.value.hour = props.segmentValues.value.hour - 12;
      return;
    }
    if (["a", "A"].includes(e.key) && props.segmentValues.value.dayPeriod !== "AM") {
      props.segmentValues.value.dayPeriod = "AM";
      props.segmentValues.value.hour = props.segmentValues.value.hour - 12;
      return;
    }
    if (["p", "P"].includes(e.key) && props.segmentValues.value.dayPeriod !== "PM") {
      props.segmentValues.value.dayPeriod = "PM";
      props.segmentValues.value.hour = props.segmentValues.value.hour + 12;
    }
  }
  function handleSegmentClick(e) {
    const disabled = props.disabled.value;
    if (disabled)
      e.preventDefault();
  }
  function handleSegmentKeydown(e) {
    const disabled = props.disabled.value;
    const readonly = props.readonly.value;
    if (e.key !== kbd.TAB)
      e.preventDefault();
    if (disabled || readonly)
      return;
    const segmentKeydownHandlers = {
      day: handleDaySegmentKeydown,
      month: handleMonthSegmentKeydown,
      year: handleYearSegmentKeydown,
      hour: handleHourSegmentKeydown,
      minute: handleMinuteSegmentKeydown,
      second: handleSecondSegmentKeydown,
      dayPeriod: handleDayPeriodSegmentKeydown,
      timeZoneName: () => {
      }
    };
    segmentKeydownHandlers[props.part](e);
    if (![kbd.ARROW_LEFT, kbd.ARROW_RIGHT].includes(e.key) && e.key !== kbd.TAB && e.key !== kbd.SHIFT && isAcceptableSegmentKey(e.key)) {
      if (Object.values(props.segmentValues.value).every((item) => item !== null)) {
        const updateObject = { ...props.segmentValues.value };
        let dateRef = props.placeholder.value.copy();
        Object.keys(updateObject).forEach((part) => {
          const value = updateObject[part];
          dateRef = dateRef.set({ [part]: value });
        });
        props.modelValue.value = dateRef.copy();
      }
    }
  }
  return {
    handleSegmentClick,
    handleSegmentKeydown,
    attributes
  };
}

export { useDateField as u };
//# sourceMappingURL=useDateField.js.map