"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import { Loader2Icon } from "lucide-react";
import { Button } from "@/components/ui/button";
import { Checkbox } from "@/components/ui/checkbox";
import { Label } from "@/components/ui/label";
import { MUTEABLE_NOTIFICATION_TYPES } from "@/lib/notifications/notificationTypes";
import { updatePreferences } from "@/app/(frontend)/account/actions";

interface PreferencesFormProps {
  mutedAll: boolean;
  mutedTypes: string[];
  showCallsign: boolean;
  leadOrActual: "lead" | "actual";
  discordEnabled: boolean;
  discordMutedTypes: string[];
}

export function PreferencesForm({
  mutedAll: initialMutedAll,
  mutedTypes: initialMutedTypes,
  showCallsign: initialShowCallsign,
  leadOrActual: initialLeadOrActual,
  discordEnabled: initialDiscordEnabled,
  discordMutedTypes: initialDiscordMutedTypes,
}: PreferencesFormProps) {
  const router = useRouter();
  const [mutedAll, setMutedAll] = useState(initialMutedAll);
  const [mutedTypes, setMutedTypes] = useState<string[]>(initialMutedTypes);
  const [showCallsign, setShowCallsign] = useState(initialShowCallsign);
  const [leadOrActual, setLeadOrActual] = useState<"lead" | "actual">(initialLeadOrActual);
  const [discordEnabled, setDiscordEnabled] = useState(initialDiscordEnabled);
  const [discordMutedTypes, setDiscordMutedTypes] = useState<string[]>(initialDiscordMutedTypes);
  const [error, setError] = useState<string | null>(null);
  const [success, setSuccess] = useState<string | null>(null);
  const [loading, setLoading] = useState(false);

  const toggleType = (value: string, checked: boolean) => {
    setMutedTypes((prev) =>
      checked ? [...new Set([...prev, value])] : prev.filter((t) => t !== value),
    );
  };

  const toggleDiscordType = (value: string, checked: boolean) => {
    setDiscordMutedTypes((prev) =>
      checked ? [...new Set([...prev, value])] : prev.filter((t) => t !== value),
    );
  };

  const handleSubmit = async (e: React.FormEvent<HTMLFormElement>) => {
    e.preventDefault();
    setLoading(true);
    setError(null);
    setSuccess(null);

    try {
      const res = await updatePreferences({
        mutedAll,
        mutedTypes,
        showCallsign,
        leadOrActual,
        discordEnabled,
        discordMutedTypes,
      });
      if (!res.success) {
        setError(res.error ?? "Failed to save preferences.");
        return;
      }
      setSuccess("Preferences saved.");
      router.refresh();
    } catch {
      setError("Something went wrong. Please try again.");
    } finally {
      setLoading(false);
    }
  };

  return (
    <form onSubmit={handleSubmit} className="flex flex-col gap-6">
      <div className="flex flex-col gap-3">
        <h3 className="text-sm font-medium">Notifications</h3>
        <label className="flex items-center gap-2 text-sm">
          <Checkbox checked={mutedAll} onCheckedChange={(c) => setMutedAll(c === true)} />
          Mute all in-app notifications
        </label>
        <div
          className={
            mutedAll
              ? "flex flex-col gap-3 pl-6 opacity-50 pointer-events-none"
              : "flex flex-col gap-3 pl-6"
          }
        >
          {MUTEABLE_NOTIFICATION_TYPES.map((t) => (
            <label key={t.value} className="flex items-center gap-2 text-sm">
              <Checkbox
                checked={mutedTypes.includes(t.value)}
                onCheckedChange={(c) => toggleType(t.value, c === true)}
              />
              {t.label}
            </label>
          ))}
        </div>
      </div>

      <div className="flex flex-col gap-3">
        <h3 className="text-sm font-medium">Display</h3>
        <label className="flex items-center gap-2 text-sm">
          <Checkbox checked={showCallsign} onCheckedChange={(c) => setShowCallsign(c === true)} />
          Show callsign (username) instead of display name
        </label>
        <div className="flex flex-col gap-2 pl-6">
          <Label className="text-sm text-muted-foreground">
            Roster leader label
          </Label>
          <div className="flex gap-4">
            <label className="flex items-center gap-2 text-sm">
              <input
                type="radio"
                name="leadOrActual"
                value="lead"
                checked={leadOrActual === "lead"}
                onChange={() => setLeadOrActual("lead")}
                className="accent-primary"
              />
              Lead
            </label>
            <label className="flex items-center gap-2 text-sm">
              <input
                type="radio"
                name="leadOrActual"
                value="actual"
                checked={leadOrActual === "actual"}
                onChange={() => setLeadOrActual("actual")}
                className="accent-primary"
              />
              Actual
            </label>
          </div>
        </div>
      </div>

      <div className="flex flex-col gap-3">
        <h3 className="text-sm font-medium">Discord</h3>
        <label className="flex items-center gap-2 text-sm">
          <Checkbox
            checked={discordEnabled}
            onCheckedChange={(c) => setDiscordEnabled(c === true)}
          />
          Discord notifications (DM me about app events)
        </label>
        <div
          className={
            discordEnabled
              ? "flex flex-col gap-3 pl-6"
              : "flex flex-col gap-3 pl-6 opacity-50 pointer-events-none"
          }
        >
          {MUTEABLE_NOTIFICATION_TYPES.map((t) => (
            <label key={t.value} className="flex items-center gap-2 text-sm">
              <Checkbox
                checked={discordMutedTypes.includes(t.value)}
                onCheckedChange={(c) => toggleDiscordType(t.value, c === true)}
              />
              Mute {t.label.toLowerCase()}
            </label>
          ))}
        </div>
      </div>

      {error && <p className="text-sm text-destructive">{error}</p>}
      {success && <p className="text-sm text-emerald-500">{success}</p>}
      <div>
        <Button type="submit" disabled={loading}>
          {loading && <Loader2Icon className="size-4 animate-spin" />}
          {loading ? "Saving..." : "Save preferences"}
        </Button>
      </div>
    </form>
  );
}