import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import InputError from '@/components/InputError';
import { LoaderCircle } from 'lucide-react';
import { FormEventHandler, useState } from 'react';
import ComponentTitle from '@/components/ui/ComponentTitle';

interface CreateTrackerStepProps {
    onSuccess: (priceTrackingEnabled: boolean) => void;
}

export default function CreateTrackerStep({ onSuccess }: CreateTrackerStepProps) {
    const [label, setLabel] = useState('');
    const [unit, setUnit] = useState('');
    const [priceTracking, setPriceTracking] = useState(false);
    const [symbol, setSymbol] = useState('');
    const [fullName, setFullName] = useState('');
    const [processing, setProcessing] = useState(false);
    const [errors, setErrors] = useState<Record<string, string>>({});

    const togglePriceTracking = (enabled: boolean) => {
        setPriceTracking(enabled);
        if (!enabled) {
            setSymbol('');
            setFullName('');
        }
    };

    const submit: FormEventHandler = async (e) => {
        e.preventDefault();
        setProcessing(true);
        setErrors({});

        try {
            const response = await fetch(route('tracker.store'), {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                    'X-CSRF-TOKEN': (document.querySelector('meta[name="csrf-token"]') as HTMLMetaElement)?.content ?? '',
                    'Accept': 'application/json',
                },
                body: JSON.stringify({
                    label,
                    unit,
                    price_tracking_enabled: priceTracking ? 1 : 0,
                    symbol: priceTracking ? symbol : null,
                    full_name: priceTracking ? fullName : null,
                }),
            });

            if (response.ok || response.status === 201 || response.status === 409) {
                onSuccess(priceTracking);
            } else {
                const data = await response.json();
                if (data.errors) {
                    setErrors(data.errors);
                } else if (data.message) {
                    setErrors({ label: data.message });
                }
            }
        } catch {
            setErrors({ label: 'Something went wrong. Please try again.' });
        } finally {
            setProcessing(false);
        }
    };

    return (
        <div className="w-full">
            <div className="space-y-4">
                <ComponentTitle>SET UP YOUR TRACKER</ComponentTitle>
                <p className="text-sm text-red-400/60 font-mono">
                    [SYSTEM] What are you tracking?
                </p>

                <form onSubmit={submit} className="space-y-4">
                    <div>
                        <Label htmlFor="label" className="text-red-400 font-mono text-xs uppercase tracking-wider">
                            &gt; Tracker Name
                        </Label>
                        <Input
                            id="label"
                            type="text"
                            placeholder="My Portfolio"
                            value={label}
                            onChange={(e) => setLabel(e.target.value)}
                            className="bg-black border-red-500 text-red-400 focus:border-red-300 font-mono text-sm rounded-none border-2 focus:ring-0 focus:outline-none focus:shadow-[0_0_10px_rgba(239,68,68,0.5)] placeholder:text-red-400/40 transition-all"
                        />
                        <p className="text-xs text-red-400/60 mt-1 font-mono">
                            [REQUIRED] e.g. "My Portfolio", "Books Read", "KM Run"
                        </p>
                        <InputError message={errors.label} />
                    </div>

                    <div>
                        <Label htmlFor="unit" className="text-red-400 font-mono text-xs uppercase tracking-wider">
                            &gt; Unit
                        </Label>
                        <Input
                            id="unit"
                            type="text"
                            placeholder="shares"
                            value={unit}
                            onChange={(e) => setUnit(e.target.value)}
                            className="bg-black border-red-500 text-red-400 focus:border-red-300 font-mono text-sm rounded-none border-2 focus:ring-0 focus:outline-none focus:shadow-[0_0_10px_rgba(239,68,68,0.5)] placeholder:text-red-400/40 transition-all"
                        />
                        <p className="text-xs text-red-400/60 mt-1 font-mono">
                            [REQUIRED] e.g. "shares", "books", "km"
                        </p>
                        <InputError message={errors.unit} />
                    </div>

                    <div className="border border-red-500/30 p-4 space-y-3">
                        <label className="flex items-center gap-3 cursor-pointer group">
                            <input
                                type="checkbox"
                                checked={priceTracking}
                                onChange={(e) => togglePriceTracking(e.target.checked)}
                                className="w-4 h-4 accent-red-500"
                            />
                            <span className="text-red-400 font-mono text-sm uppercase tracking-wider group-hover:text-red-300">
                                Enable price tracking
                            </span>
                        </label>
                        <p className="text-red-400/60 font-mono text-xs">
                            Track market price, portfolio value, and P&amp;L. Requires an asset symbol.
                        </p>

                        {priceTracking && (
                            <div className="space-y-3 pt-2">
                                <div>
                                    <Label htmlFor="symbol" className="text-red-400 font-mono text-xs uppercase tracking-wider">
                                        &gt; Asset Symbol
                                    </Label>
                                    <Input
                                        id="symbol"
                                        type="text"
                                        placeholder="VWCE"
                                        value={symbol}
                                        onChange={(e) => setSymbol(e.target.value.toUpperCase())}
                                        className="bg-black border-red-500 text-red-400 focus:border-red-300 font-mono text-sm rounded-none border-2 focus:ring-0 focus:outline-none focus:shadow-[0_0_10px_rgba(239,68,68,0.5)] placeholder:text-red-400/40 transition-all"
                                    />
                                    <InputError message={errors.symbol} />
                                </div>
                                <div>
                                    <Label htmlFor="full_name" className="text-red-400 font-mono text-xs uppercase tracking-wider">
                                        &gt; Full Name (Optional)
                                    </Label>
                                    <Input
                                        id="full_name"
                                        type="text"
                                        placeholder="Vanguard FTSE All-World UCITS ETF"
                                        value={fullName}
                                        onChange={(e) => setFullName(e.target.value)}
                                        className="bg-black border-red-500 text-red-400 focus:border-red-300 font-mono text-sm rounded-none border-2 focus:ring-0 focus:outline-none focus:shadow-[0_0_10px_rgba(239,68,68,0.5)] placeholder:text-red-400/40 transition-all"
                                    />
                                    <InputError message={errors.full_name} />
                                </div>
                            </div>
                        )}
                    </div>

                    <Button
                        type="submit"
                        disabled={processing || !label || !unit || (priceTracking && !symbol)}
                        className="w-full bg-red-500 hover:bg-red-500 text-black font-mono text-sm font-bold border-red-500 rounded-none border-2 uppercase tracking-wider transition-all glow-red"
                    >
                        {processing && <LoaderCircle className="mr-2 h-4 w-4 animate-spin" />}
                        [INITIALIZE]
                    </Button>
                </form>
            </div>
        </div>
    );
}