import { ref, computed, defineComponent, createVNode as _createVNode } from "vue";
import { pick, addUnit, numericProp, setScrollTop, createNamespace, makeRequiredProp } from "../utils/index.mjs";
import { getMonthEndDay } from "../date-picker/utils.mjs";
import { t, bem, compareDay, getPrevDay, getNextDay, formatMonthTitle } from "./utils.mjs";
import { useRect, useToggle } from "@vant/use";
import { useExpose } from "../composables/use-expose.mjs";
import { useHeight } from "../composables/use-height.mjs";
import CalendarDay from "./CalendarDay.mjs";
const [name] = createNamespace("calendar-month");
const calendarMonthProps = {
  date: makeRequiredProp(Date),
  type: String,
  color: String,
  minDate: Date,
  maxDate: Date,
  showMark: Boolean,
  rowHeight: numericProp,
  formatter: Function,
  lazyRender: Boolean,
  currentDate: [Date, Array],
  allowSameDay: Boolean,
  showSubtitle: Boolean,
  showMonthTitle: Boolean,
  firstDayOfWeek: Number
};
var stdin_default = defineComponent({
  name,
  props: calendarMonthProps,
  emits: ["click", "clickDisabledDate"],
  setup(props, {
    emit,
    slots
  }) {
    const [visible, setVisible] = useToggle();
    const daysRef = ref();
    const monthRef = ref();
    const height = useHeight(monthRef);
    const title = computed(() => formatMonthTitle(props.date));
    const rowHeight = computed(() => addUnit(props.rowHeight));
    const offset = computed(() => {
      const date = props.date.getDate();
      const day = props.date.getDay();
      const realDay = (day - date % 7 + 8) % 7;
      if (props.firstDayOfWeek) {
        return (realDay + 7 - props.firstDayOfWeek) % 7;
      }
      return realDay;
    });
    const totalDay = computed(() => getMonthEndDay(props.date.getFullYear(), props.date.getMonth() + 1));
    const shouldRender = computed(() => visible.value || !props.lazyRender);
    const getTitle = () => title.value;
    const getMultipleDayType = (day) => {
      const isSelected = (date) => props.currentDate.some((item) => compareDay(item, date) === 0);
      if (isSelected(day)) {
        const prevDay = getPrevDay(day);
        const nextDay = getNextDay(day);
        const prevSelected = isSelected(prevDay);
        const nextSelected = isSelected(nextDay);
        if (prevSelected && nextSelected) {
          return "multiple-middle";
        }
        if (prevSelected) {
          return "end";
        }
        if (nextSelected) {
          return "start";
        }
        return "multiple-selected";
      }
      return "";
    };
    const getRangeDayType = (day) => {
      const [startDay, endDay] = props.currentDate;
      if (!startDay) {
        return "";
      }
      const compareToStart = compareDay(day, startDay);
      if (!endDay) {
        return compareToStart === 0 ? "start" : "";
      }
      const compareToEnd = compareDay(day, endDay);
      if (props.allowSameDay && compareToStart === 0 && compareToEnd === 0) {
        return "start-end";
      }
      if (compareToStart === 0) {
        return "start";
      }
      if (compareToEnd === 0) {
        return "end";
      }
      if (compareToStart > 0 && compareToEnd < 0) {
        return "middle";
      }
      return "";
    };
    const getDayType = (day) => {
      const {
        type,
        minDate,
        maxDate,
        currentDate
      } = props;
      if (minDate && compareDay(day, minDate) < 0 || maxDate && compareDay(day, maxDate) > 0) {
        return "disabled";
      }
      if (currentDate === null) {
        return "";
      }
      if (Array.isArray(currentDate)) {
        if (type === "multiple") {
          return getMultipleDayType(day);
        }
        if (type === "range") {
          return getRangeDayType(day);
        }
      } else if (type === "single") {
        return compareDay(day, currentDate) === 0 ? "selected" : "";
      }
      return "";
    };
    const getBottomInfo = (dayType) => {
      if (props.type === "range") {
        if (dayType === "start" || dayType === "end") {
          return t(dayType);
        }
        if (dayType === "start-end") {
          return `${t("start")}/${t("end")}`;
        }
      }
    };
    const renderTitle = () => {
      if (props.showMonthTitle) {
        return _createVNode("div", {
          "class": bem("month-title")
        }, [slots["month-title"] ? slots["month-title"]({
          date: props.date,
          text: title.value
        }) : title.value]);
      }
    };
    const renderMark = () => {
      if (props.showMark && shouldRender.value) {
        return _createVNode("div", {
          "class": bem("month-mark")
        }, [props.date.getMonth() + 1]);
      }
    };
    const placeholders = computed(() => {
      const count = Math.ceil((totalDay.value + offset.value) / 7);
      return Array(count).fill({
        type: "placeholder"
      });
    });
    const days = computed(() => {
      const days2 = [];
      const year = props.date.getFullYear();
      const month = props.date.getMonth();
      for (let day = 1; day <= totalDay.value; day++) {
        const date = new Date(year, month, day);
        const type = getDayType(date);
        let config = {
          date,
          type,
          text: day,
          bottomInfo: getBottomInfo(type)
        };
        if (props.formatter) {
          config = props.formatter(config);
        }
        days2.push(config);
      }
      return days2;
    });
    const disabledDays = computed(() => days.value.filter((day) => day.type === "disabled"));
    const scrollToDate = (body, targetDate) => {
      if (daysRef.value) {
        const daysRect = useRect(daysRef.value);
        const totalRows = placeholders.value.length;
        const currentRow = Math.ceil((targetDate.getDate() + offset.value) / 7);
        const rowOffset = (currentRow - 1) * daysRect.height / totalRows;
        setScrollTop(body, daysRect.top + rowOffset + body.scrollTop - useRect(body).top);
      }
    };
    const renderDay = (item, index) => _createVNode(CalendarDay, {
      "item": item,
      "index": index,
      "color": props.color,
      "offset": offset.value,
      "rowHeight": rowHeight.value,
      "onClick": (item2) => emit("click", item2),
      "onClickDisabledDate": (item2) => emit("clickDisabledDate", item2)
    }, pick(slots, ["top-info", "bottom-info", "text"]));
    const renderDays = () => _createVNode("div", {
      "ref": daysRef,
      "role": "grid",
      "class": bem("days")
    }, [renderMark(), (shouldRender.value ? days : placeholders).value.map(renderDay)]);
    useExpose({
      getTitle,
      getHeight: () => height.value,
      setVisible,
      scrollToDate,
      disabledDays
    });
    return () => _createVNode("div", {
      "class": bem("month"),
      "ref": monthRef
    }, [renderTitle(), renderDays()]);
  }
});
export {
  stdin_default as default
};