"use client";

import { usePathname, useRouter } from "next/navigation";
import { toast } from "@/components/ui/use-toast";
import { cn } from "@/lib/utils";
import React, { useState, useEffect, useRef } from 'react';

import { useUpdateHour } from "@lifetracker/shared-react/hooks/days";
import { EditableText } from "@/components/dashboard/EditableText";
import { format } from "date-fns";
import { TZDate } from "@date-fns/tz";
import { ZHour } from "@lifetracker/shared/types/days";
import { MessageCircle, Pencil, Plus } from "lucide-react";
import { ButtonWithTooltip } from "@/components/ui/button";
import { EditableHourCode } from "./EditableHourCode";
import { EditableHourComment } from "./EditableHourComment";
import spacetime from 'spacetime';
import { eq, is } from "drizzle-orm";
import HourMeasurementsDialog from "@/components/dashboard/hours/HourMeasurementsDialog";
import { ActionButtonWithTooltip } from "@/components/ui/action-button";
import { ZMetric } from "@lifetracker/shared/types/metrics";
import { Badge } from "@/components/ui/badge";
import { Icon } from "@/components/ui/icon";
import { titleCase } from "title-case";
import { useDecrementCount } from "@lifetracker/shared-react/hooks/measurements";

export default function EditableHour({
    hour: initialHour,
    i,
    metrics,
    className,
}: {
    hour: ZHour,
    i: number,
    metrics: ZMetric[],
    className?: string;
}) {
    const [hour, setHour] = useState(initialHour);
    const { mutate: updateHour, isPending } = useUpdateHour({
        onSuccess: (res, req, meta) => {
            const { categoryCode: oldCode, comment: oldComment } = hour;
            const newHour = {
                categoryCode: parseInt(req.code!),
                comment: oldComment,
                ...res,
            };
            setHour(newHour);
            // Only show toast if client screen is larger than mobile
            if (window.innerWidth > 640) {
                toast({
                    description: "Hour updated!",
                });
            }
        },
    });
    const { mutate: decrementCount } = useDecrementCount({
        onSuccess: (res, req) => {
            const oldMeasurementIndex = hour.measurements.findIndex(m => m.metricId === req.metricId);
            let newMeasurements;

            if (oldMeasurementIndex !== -1) {
                if (res === undefined) {
                    // Remove the measurement if res is undefined
                    newMeasurements = [
                        ...hour.measurements.slice(0, oldMeasurementIndex),
                        ...hour.measurements.slice(oldMeasurementIndex + 1)
                    ];
                } else {
                    // Update the measurement
                    newMeasurements = [
                        ...hour.measurements.slice(0, oldMeasurementIndex),
                        res,
                        ...hour.measurements.slice(oldMeasurementIndex + 1)
                    ];
                }
            } else {
                // Add the new measurement
                newMeasurements = [...hour.measurements, res];
            }

            const newHour = {
                ...hour,
                measurements: newMeasurements,
            };

            setHour(newHour);
            toast({
                description: res === undefined ? "Measurement removed!" : "Measurement updated!",
            });
        }
    });


    const tzOffset = spacetime().offset() / 60;
    const localDateTime = spacetime(hour.date).add(hour.time + tzOffset, "hour");
    hour.datetime = `${localDateTime.format('{hour} {ampm}')}`;

    useEffect(() => {
        // console.log(hour.categoryDesc);
    }, [hour]);


    function isActiveHour(hour: ZHour) {
        const now = new TZDate();
        const isCurrentHour = ((now.getHours() - localDateTime.hour()) == 0);
        const isToday = (localDateTime.format("iso-short") == format(now, "yyyy-MM-dd"));
        return isToday && isCurrentHour;
    }

    function reload(newHour: ZHour) {
        setHour(newHour);
    }

    return (
        <div
            data-hourid={hour.id}
            className={cn(
                "p-4 grid justify-between",
            )}
            style={{
                background: hour.background!, color: hour.foreground!, fontFamily: "inherit",
                gridTemplateColumns: window.innerWidth > 640 ? "50px 100px 3fr 2fr" : "50px 100px 1fr", // Known issue: This won't work if the screen is resized, only on reload
            }}
        >
            <span className="text-right">
                {/* {isActiveHour(hour) && "--> "} */}
                {hour.datetime}
            </span>
            <div className="flex justify-center">
                <EditableHourCode
                    className={"w-8 border-b"}
                    originalText={hour.categoryCode}
                    hour={hour}
                    onSubmit={updateHour}
                    i={i}
                />
            </div>
            <span className="hidden sm:block">
                {hour.categoryCode != undefined ?
                    <EditableHourComment
                        originalText={hour.comment ?? hour.categoryName}
                        hour={hour}
                        onSubmit={updateHour}
                        i={i}
                    />
                    : ""}
            </span>
            <span className="block sm:hidden">
                <div className="w-full text-left edit-hour-comment"
                    style={{
                        background: hour.background ?? "inherit", color: hour.foreground ?? "inherit", fontFamily: "inherit",
                    }}>
                    {hour.categoryName}
                </div>
            </span>
            <div className="hidden sm:flex items-center justify-end">

                {hour.categoryCode != undefined ?

                    <div className="flex items-center gap-2">
                        {hour.measurements?.map(m =>
                            Array.from({ length: m.value }).map((_, index) =>
                                <div key={`${m.id}-${index}`} className="hover:cursor-no-drop" onClick={(e) => {
                                    decrementCount({ metricId: m.metricId, hourId: hour.id });
                                }}>
                                    <Icon name={titleCase(m.icon)} size={24} color={hour.foreground} />
                                </div>
                            )
                        )}
                        {(hour.measurements.length > 0) ?
                            (<span className="mx-2 opacity-50">|</span>)
                            : ""
                        }

                        <HourMeasurementsDialog hour={hour} metrics={metrics} reload={reload}>
                            <Plus size={16} className="opacity-50 hover:cursor-pointer" />
                        </HourMeasurementsDialog>
                    </div>
                    : ""}
            </div>
        </div>
    );
}