import {
    CloudRain,
    Droplets,
    MapPin,
    Sun,
    Wind,
    ArrowRight,
    Cloud,
    type LucideIcon,
} from "lucide-react";
import type { WeatherForecastResponse } from "../../../types/weather";

type Props = {
    theme: "dark" | "light";
    forecast: WeatherForecastResponse | null;
    loading: boolean;
    error: string | null;
    compact?: boolean;
    onOpenMeteo?: () => void;
};

const RADIUS = "rounded-[5px]";

export function WeatherForecastCard({
    theme,
    forecast,
    loading,
    error,
    compact = false,
    onOpenMeteo,
}: Props) {
    const isDark = theme === "dark";

    if (compact) {
        return (
            <CompactWeatherCard
                theme={theme}
                forecast={forecast}
                loading={loading}
                error={error}
                onOpenMeteo={onOpenMeteo}
            />
        );
    }

    return (
        <section
            className={
                isDark
                    ? `${RADIUS} border border-white/10 bg-[#111827] p-5 shadow-[0_12px_30px_rgba(0,0,0,0.22)]`
                    : `${RADIUS} border border-slate-200 bg-white p-5 shadow-[0_10px_26px_rgba(15,23,42,0.06)]`
            }
        >
            <div className="mb-5 flex items-start justify-between gap-4">
                <div>
                    <p className={isDark ? eyebrowDark : eyebrowLight}>
                        Previsão meteorológica
                    </p>

                    <h2 className={isDark ? titleDark : titleLight}>
                        {forecast
                            ? `${forecast.location.name}, ${forecast.location.country}`
                            : "Meteorologia externa"}
                    </h2>

                    <p className={isDark ? subtitleDark : subtitleLight}>
                        <MapPin className="h-4 w-4" />
                        Dados externos de previsão
                    </p>
                </div>

                {forecast?.daily?.[0]?.condition?.icon && (
                    <img
                        src={forecast.daily[0].condition.icon}
                        alt={forecast.daily[0].condition.text}
                        className="h-12 w-12 opacity-90"
                    />
                )}
            </div>

            {loading ? (
                <StateMessage theme={theme}>A carregar previsão meteorológica...</StateMessage>
            ) : error ? (
                <StateMessage theme={theme}>{error}</StateMessage>
            ) : !forecast ? (
                <StateMessage theme={theme}>Sem previsão meteorológica disponível.</StateMessage>
            ) : (
                <div className="space-y-4">
                    <TodayForecastHero
                        theme={theme}
                        forecast={forecast}
                    />

                    <div className="grid gap-2 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-6">
                        {forecast.daily.slice(1, 7).map((day) => (
                            <DailyForecastTile
                                key={day.date}
                                theme={theme}
                                day={day}
                            />
                        ))}
                    </div>
                </div>
            )}
        </section>
    );
}

function TodayForecastHero({
    theme,
    forecast,
}: {
    theme: "dark" | "light";
    forecast: WeatherForecastResponse;
}) {
    const isDark = theme === "dark";

    const today = forecast.daily[0];

    return (
        <div
            className={
                isDark
                    ? `${RADIUS} border border-white/10 bg-white/[0.03] p-5`
                    : `${RADIUS} border border-slate-200 bg-slate-50 p-5`
            }
        >
            <div className="grid gap-4 xl:grid-cols-[320px_1fr]">
                <div className="flex items-center gap-4">
                    {today.condition?.icon && (
                        <img
                            src={today.condition.icon}
                            alt={today.condition.text}
                            className="h-16 w-16 shrink-0 opacity-90"
                        />
                    )}

                    <div>
                        <p
                            className={
                                isDark
                                    ? "text-xs font-bold uppercase tracking-[0.16em] text-slate-500"
                                    : "text-xs font-bold uppercase tracking-[0.16em] text-slate-400"
                            }
                        >
                            Hoje
                        </p>

                        <p
                            className={
                                isDark
                                    ? "mt-1 text-sm font-semibold text-slate-400"
                                    : "mt-1 text-sm font-semibold text-slate-500"
                            }
                        >
                            {formatDay(today.date)}
                        </p>

                        <div
                            className={
                                isDark
                                    ? "mt-2 text-[46px] font-black leading-none tracking-[-0.06em] text-slate-100"
                                    : "mt-2 text-[46px] font-black leading-none tracking-[-0.06em] text-slate-950"
                            }
                        >
                            {Math.round(today.maxTemperatureC)}°
                            <span className="ml-1 text-lg tracking-normal text-slate-500">
                                / {Math.round(today.minTemperatureC)}°
                            </span>
                        </div>

                        <p
                            className={
                                isDark
                                    ? "mt-2 text-sm font-semibold text-slate-300"
                                    : "mt-2 text-sm font-semibold text-slate-600"
                            }
                        >
                            {today.condition?.text ?? "--"}
                        </p>
                    </div>
                </div>

                <div className="grid gap-2 sm:grid-cols-2 lg:grid-cols-4">
                    <WeatherMiniStat
                        theme={theme}
                        icon={CloudRain}
                        label="Prob. chuva"
                        value={`${today.dailyRainChance}%`}
                    />

                    <WeatherMiniStat
                        theme={theme}
                        icon={Sun}
                        label="UV"
                        value={today.uv.toFixed(0)}
                    />

                    <WeatherMiniStat
                        theme={theme}
                        icon={Wind}
                        label="Vento"
                        value={`${forecast.daily[0].maxWindKph.toFixed(1)} km/h`}
                    />

                    <WeatherMiniStat
                        theme={theme}
                        icon={Droplets}
                        label="Humidade"
                        value={`${forecast.daily[0].averageHumidity}%`}
                    />
                </div>
            </div>
        </div>
    );
}

function DailyForecastTile({
    theme,
    day,
}: {
    theme: "dark" | "light";
    day: WeatherForecastResponse["daily"][number];
}) {
    const isDark = theme === "dark";

    return (
        <div
            className={
                isDark
                    ? `${RADIUS} border border-white/10 bg-white/[0.03] p-3`
                    : `${RADIUS} border border-slate-200 bg-slate-50 p-3`
            }
        >
            <div className="flex items-start justify-between gap-2">
                <div className="min-w-0">
                    <p
                        className={
                            isDark
                                ? "text-sm font-black text-slate-100"
                                : "text-sm font-black text-slate-950"
                        }
                    >
                        {formatDay(day.date)}
                    </p>

                    <p
                        className={
                            isDark
                                ? "mt-1 truncate text-xs text-slate-400"
                                : "mt-1 truncate text-xs text-slate-500"
                        }
                    >
                        {day.condition?.text ?? "--"}
                    </p>
                </div>

                {day.condition?.icon && (
                    <img
                        src={day.condition.icon}
                        alt={day.condition.text}
                        className="h-9 w-9 shrink-0 opacity-90"
                    />
                )}
            </div>

            <div className="mt-4">
                <p
                    className={
                        isDark
                            ? "text-2xl font-black text-slate-100"
                            : "text-2xl font-black text-slate-950"
                    }
                >
                    {Math.round(day.maxTemperatureC)}°
                    <span className="ml-1 text-sm font-bold text-slate-500">
                        / {Math.round(day.minTemperatureC)}°
                    </span>
                </p>
            </div>

            <div className="mt-4 flex items-center justify-between gap-2 text-xs">
                <span
                    className={
                        isDark
                            ? "flex items-center gap-1 font-semibold text-slate-400"
                            : "flex items-center gap-1 font-semibold text-slate-500"
                    }
                >
                    <CloudRain className="h-3.5 w-3.5" />
                    {day.dailyRainChance}%
                </span>

                <span
                    className={
                        isDark
                            ? "flex items-center gap-1 font-semibold text-slate-400"
                            : "flex items-center gap-1 font-semibold text-slate-500"
                    }
                >
                    <Sun className="h-3.5 w-3.5" />
                    UV {day.uv.toFixed(0)}
                </span>
            </div>
        </div>
    );
}

function WeatherMiniStat({
    theme,
    icon: Icon,
    label,
    value,
}: {
    theme: "dark" | "light";
    icon: LucideIcon;
    label: string;
    value: string;
}) {
    const isDark = theme === "dark";

    return (
        <div
            className={
                isDark
                    ? `${RADIUS} border border-white/10 bg-[#0b1220] px-3 py-2.5`
                    : `${RADIUS} border border-slate-200 bg-white px-3 py-2.5`
            }
        >
            <Icon
                className={
                    isDark
                        ? "mb-1.5 h-4 w-4 text-slate-400"
                        : "mb-1.5 h-4 w-4 text-slate-500"
                }
            />

            <p className="text-[11px] text-slate-500">{label}</p>

            <p
                className={
                    isDark
                        ? "mt-0.5 text-sm font-black text-slate-100"
                        : "mt-0.5 text-sm font-black text-slate-950"
                }
            >
                {value}
            </p>
        </div>
    );
}

function StateMessage({
    theme,
    children,
}: {
    theme: "dark" | "light";
    children: string;
}) {
    const isDark = theme === "dark";

    return (
        <div
            className={
                isDark
                    ? `${RADIUS} border border-white/10 bg-white/[0.03] p-5 text-sm text-slate-400`
                    : `${RADIUS} border border-slate-200 bg-slate-50 p-5 text-sm text-slate-500`
            }
        >
            {children}
        </div>
    );
}

function formatDay(date: string) {
    return new Date(date).toLocaleDateString("pt-PT", {
        weekday: "short",
        day: "2-digit",
    });
}

const eyebrowDark =
    "text-[11px] font-bold uppercase tracking-[0.22em] text-slate-500";
const eyebrowLight =
    "text-[11px] font-bold uppercase tracking-[0.22em] text-slate-400";

const titleDark = "mt-2 text-xl font-black tracking-[-0.03em] text-slate-100";
const titleLight = "mt-2 text-xl font-black tracking-[-0.03em] text-slate-950";

const subtitleDark = "mt-1 flex items-center gap-2 text-sm text-slate-400";
const subtitleLight = "mt-1 flex items-center gap-2 text-sm text-slate-500";

function CompactWeatherCard({
    theme,
    forecast,
    loading,
    error,
    onOpenMeteo,
}: {
    theme: "dark" | "light";
    forecast: WeatherForecastResponse | null;
    loading: boolean;
    error: string | null;
    onOpenMeteo?: () => void;
}) {
    const isDark = theme === "dark";

    const today = forecast?.daily?.[0];

    return (
        <article
            className={
                isDark
                    ? "absolute right-0 top-10 w-[340px] rounded-[8px] border border-white/10 bg-[#07111f]/92 p-7 shadow-[0_22px_60px_rgba(0,0,0,0.42)] backdrop-blur-xl"
                    : "absolute right-0 top-10 w-[340px] rounded-[8px] border border-slate-200/80 bg-white/96 p-7 shadow-[0_14px_40px_rgba(15,23,42,0.10)] backdrop-blur-xl"
            }
        >
            <p className="flex items-center gap-2 text-sm font-bold">
                <MapPin className="h-4 w-4" />

                {forecast
                    ? `${forecast.location.name}, ${forecast.location.country}`
                    : "Meteorologia"}
            </p>

            {loading ? (
                <div className="mt-5 text-sm text-slate-400">
                    A carregar previsão...
                </div>
            ) : error ? (
                <div className="mt-5 text-sm text-red-400">
                    {error}
                </div>
            ) : today ? (
                <>
                    <div className="mt-6 flex items-start justify-between gap-5">
                        <div>
                            <p
                                className={
                                    isDark
                                        ? "text-xs font-bold uppercase tracking-[0.18em] text-slate-400"
                                        : "text-xs font-bold uppercase tracking-[0.18em] text-slate-500"
                                }
                            >
                                Hoje
                            </p>

                            <p
                                className={
                                    isDark
                                        ? "mt-1 text-sm font-semibold text-slate-300"
                                        : "mt-1 text-sm font-semibold text-slate-600"
                                }
                            >
                                {formatDay(today.date)}
                            </p>

                            <div className="mt-5 flex items-end">
                                <span className="text-[44px] font-black leading-none tracking-[-0.06em]">
                                    {Math.round(today.maxTemperatureC)}°
                                </span>

                                <span className="mb-1 ml-2 text-base font-bold text-slate-500">
                                    / {Math.round(today.minTemperatureC)}°
                                </span>
                            </div>

                            <p
                                className={
                                    isDark
                                        ? "mt-2 text-sm text-slate-300"
                                        : "mt-2 text-sm text-slate-700"
                                }
                            >
                                {today.condition?.text ?? "--"}
                            </p>

                            <div
                                className={
                                    isDark
                                        ? "mt-4 flex flex-wrap gap-2 text-xs text-slate-400"
                                        : "mt-4 flex flex-wrap gap-2 text-xs text-slate-600"
                                }
                            >
                                <span
                                    className={
                                        isDark
                                            ? "rounded-full border border-white/10 bg-white/5 px-2 py-1"
                                            : "rounded-full border border-slate-200 bg-slate-100 px-2 py-1"
                                    }
                                >
                                    Chuva {today.dailyRainChance}%
                                </span>

                                <span
                                    className={
                                        isDark
                                            ? "rounded-full border border-white/10 bg-white/5 px-2 py-1"
                                            : "rounded-full border border-slate-200 bg-slate-100 px-2 py-1"
                                    }
                                >
                                    UV {today.uv.toFixed(0)}
                                </span>
                            </div>
                        </div>

                        {today.condition?.icon ? (
                            <img
                                src={today.condition.icon}
                                alt={today.condition.text}
                                className="h-16 w-16 shrink-0 opacity-90"
                            />
                        ) : (
                            <Cloud
                                className={
                                    isDark
                                        ? "h-16 w-16 shrink-0 text-slate-200"
                                        : "h-16 w-16 shrink-0 text-slate-400"
                                }
                                strokeWidth={1.8}
                            />
                        )}
                    </div>

                    <div
                        className={
                            isDark
                                ? "mt-6 border-t border-white/10 pt-4"
                                : "mt-6 border-t border-slate-200 pt-4"
                        }
                    >
                        <button
                            type="button"
                            onClick={onOpenMeteo}
                            className="flex items-center gap-3 text-sm text-slate-500 transition hover:text-emerald-400"
                        >
                            Ver meteorologia
                            <ArrowRight className="h-4 w-4 text-emerald-400" />
                        </button>
                    </div>
                </>
            ) : (
                <div className="mt-5 text-sm text-slate-400">
                    Sem previsão diária disponível.
                </div>
            )}
        </article>
    );
}