import { Button } from "antd";
import dayjs from "dayjs";
import { useMemo, useState } from "react";
import { useTranslation } from "react-i18next";
import Picker from "components/WheelPicker";
import { SERVER_DATE_FORMAT } from "utils/constants.ts";

interface PickupEstimateContentProps {
  onSave: (date: string, time: string) => void;
  onClose: () => void;
}

export default function PickupEstimateContent({
  onSave,
  onClose,
}: PickupEstimateContentProps) {
  const { t } = useTranslation();

  // Generate day options: Today, Tomorrow, then formatted dates (90 days total for scrolling)
  const dayOptions = useMemo(() => {
    const options = [];
    const today = dayjs();

    // Today
    options.push({
      value: "today",
      label: "Today",
      date: today.format(SERVER_DATE_FORMAT),
    });

    // Tomorrow
    options.push({
      value: "tomorrow",
      label: "Tomorrow",
      date: today.add(1, "day").format(SERVER_DATE_FORMAT),
    });

    // Next days with formatted dates (up to 90 days total for smooth scrolling)
    for (let i = 2; i < 90; i++) {
      const date = today.add(i, "day");
      const formatted = date.toDate().toLocaleDateString("en-US", {
        weekday: "long",
        month: "long",
        day: "numeric",
      });
      options.push({
        value: `day-${i}`,
        label: formatted,
        date: date.format(SERVER_DATE_FORMAT),
      });
    }

    return options;
  }, []);

  // Generate time options: Now, then time slots (5 items total)
  const timeOptions = useMemo(() => {
    const options = [];
    const now = dayjs();

    // Now option
    options.push({
      value: "now",
      label: "Now",
      time: now.format("HH:mm"),
    });

    // Calculate next 15-minute interval (always the next one, even if we're on a boundary)
    const currentMinute = now.minute();
    let nextMinute = Math.floor(currentMinute / 15) * 15 + 15;
    let nextHour = now.hour();

    if (nextMinute >= 60) {
      nextMinute = 0;
      nextHour += 1;
      if (nextHour >= 24) {
        nextHour = 0;
      }
    }

    // Generate next 4 time slots (15-minute intervals)
    let hour = nextHour;
    let minute = nextMinute;

    for (let i = 0; i < 96; i++) {
      const time = dayjs().hour(hour).minute(minute).second(0);
      const formatted = time.format("h:mm A");

      options.push({
        value: `time-${i}`,
        label: formatted,
        time: time.format("HH:mm"),
      });

      // Calculate next interval
      minute += 15;
      if (minute >= 60) {
        minute = 0;
        hour += 1;
        if (hour >= 24) {
          hour = 0;
        }
      }
    }

    return options;
  }, []);

  const [selectedDay, setSelectedDay] = useState<string>("today");
  const [selectedTime, setSelectedTime] = useState<string>("now");

  const handlePickerChange = (value: { day?: string; time?: string }) => {
    console.log(value);
    if (value.day !== undefined) {
      setSelectedDay(value.day);
    }
    if (value.time !== undefined) {
      setSelectedTime(value.time);
    }
  };

  const handleSave = () => {
    const selectedDayOption = dayOptions.find(
      (opt) => opt.value === selectedDay,
    );
    const selectedTimeOption = timeOptions.find(
      (opt) => opt.value === selectedTime,
    );

    if (selectedDayOption && selectedTimeOption) {
      onSave(selectedDayOption.date, selectedTimeOption.time);
      onClose();
    }
  };

  const handleTouchStart = (e: React.TouchEvent<HTMLDivElement>) => {
    e.stopPropagation();
  };

  const handleTouchMove = (e: React.TouchEvent<HTMLDivElement>) => {
    e.stopPropagation();
  };

  const handleTouchEnd = (e: React.TouchEvent<HTMLDivElement>) => {
    e.stopPropagation();
  };

  const handleMouseDown = (e: React.MouseEvent<HTMLDivElement>) => {
    e.stopPropagation();
  };

  const handleMouseMove = (e: React.MouseEvent<HTMLDivElement>) => {
    e.stopPropagation();
  };

  const handleMouseUp = (e: React.MouseEvent<HTMLDivElement>) => {
    e.stopPropagation();
  };

  const handleWheel = (e: React.WheelEvent<HTMLDivElement>) => {
    e.stopPropagation();
  };

  return (
    <>
      <div
        style={{
          marginTop: 30,
          display: "flex",
          flexDirection: "column",
        }}
        onTouchStart={handleTouchStart}
        onTouchMove={handleTouchMove}
        onTouchEnd={handleTouchEnd}
        onMouseDown={handleMouseDown}
        onMouseMove={handleMouseMove}
        onMouseUp={handleMouseUp}
        onWheel={handleWheel}
      >
        {/* Day and Time Pickers - Same Row */}
        <div
          style={{
            display: "flex",
            flexDirection: "row",
            gap: "8px",
            marginBottom: 30,
          }}
        >
          {/* Day Picker */}
          <div style={{ width: "60%" }}>
            <Picker
              value={{ day: selectedDay }}
              onChange={(value) => handlePickerChange(value)}
              width="100%"
              height={250}
              style={{
                position: "relative",
                display: "flex",
                backgroundColor: "var(--secondary-background)",
                overflow: "hidden",
                width: "100%",
                height: 250,
                border: "none",
                borderRadius: "8px",
              }}
              aria-selected={false}
            >
              <Picker.Column
                name="day"
                style={{
                  flex: 1,
                  backgroundColor: "var(--secondary-background)",
                }}
              >
                {dayOptions.map((option) => (
                  <Picker.Item key={option.value} value={option.value}>
                    {({ selected }) => (
                      <div
                        style={{
                          fontWeight: selected ? "600" : "400",
                          color: selected
                            ? "var(--foreground)"
                            : "var(--text-color-gray)",
                          fontSize: "16px",
                          padding: "9px 0",
                          textAlign: "center",
                          opacity: selected ? 1 : 0.7,
                          transition: "all 0.2s ease",
                          lineHeight: "1.2",
                          height: 36,
                          width: "100%",
                          backgroundColor: selected
                            ? "var(--background)"
                            : "transparent",
                          borderRadius: selected ? "4px" : "0",
                          margin: selected ? "2px 4px" : "0",
                        }}
                      >
                        {option.label}
                      </div>
                    )}
                  </Picker.Item>
                ))}
              </Picker.Column>
            </Picker>
          </div>

          {/* Time Picker */}
          <div style={{ width: "40%" }}>
            <Picker
              value={{ time: selectedTime }}
              onChange={(value) => handlePickerChange(value)}
              width="100%"
              height={250}
              style={{
                position: "relative",
                display: "flex",
                backgroundColor: "var(--secondary-background)",
                overflow: "hidden",
                width: "100%",
                height: 250,
                border: "none",
                borderRadius: "8px",
              }}
              aria-selected={false}
            >
              <Picker.Column
                name="time"
                style={{
                  flex: 1,
                  backgroundColor: "var(--secondary-background)",
                }}
              >
                {timeOptions.map((option) => (
                  <Picker.Item key={option.value} value={option.value}>
                    {({ selected }) => (
                      <div
                        style={{
                          fontWeight: selected ? "600" : "400",
                          color: selected
                            ? "var(--foreground)"
                            : "var(--text-color-gray)",
                          fontSize: "16px",
                          padding: "9px 0",
                          textAlign: "center",
                          opacity: selected ? 1 : 0.7,
                          transition: "all 0.2s ease",
                          lineHeight: "1.2",
                          height: 36,
                          width: "100%",
                          backgroundColor: selected
                            ? "var(--background)"
                            : "transparent",
                          borderRadius: selected ? "4px" : "0",
                          margin: selected ? "2px 4px" : "0",
                        }}
                      >
                        {option.label}
                      </div>
                    )}
                  </Picker.Item>
                ))}
              </Picker.Column>
            </Picker>
          </div>
        </div>
      </div>

      {/* Save Button */}
      <div style={{ display: "flex", flexDirection: "column", gap: 16 }}>
        <Button
          type="primary"
          onClick={handleSave}
          style={{
            width: "100%",
            height: 48,
            fontSize: 16,
            fontWeight: 600,
            backgroundColor: "var(--primary)",
            border: "none",
          }}
        >
          {t("checkout.scheduled")}
        </Button>
        <Button
          onClick={handleSave}
          style={{
            width: "100%",
            height: 48,
            fontSize: 16,
            fontWeight: 600,
            border: "1px solid ##C0BFC4",
          }}
        >
          {t("checkout.pickupNow")}
        </Button>
      </div>
    </>
  );
}