import { useState } from "react";
import { useNavigate } from "@tanstack/react-router";
import { Compass, Eye, EyeOff, Loader2 } from "lucide-react";
import { toast } from "sonner";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { login, type AuthPlatform } from "@/lib/auth";

interface LoginPageProps {
  platform: AuthPlatform;
  redirectTo?: string;
}

export function LoginPage({ platform, redirectTo = "/" }: LoginPageProps) {
  const navigate = useNavigate();
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [showPassword, setShowPassword] = useState(false);
  const [loading, setLoading] = useState(false);

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setLoading(true);

    await new Promise((r) => setTimeout(r, 400));

    if (login(platform, email, password)) {
      toast.success("Signed in successfully");
      navigate({ to: redirectTo });
      return;
    }

    toast.error("Invalid email or password");
    setLoading(false);
  };

  return (
    <div className="flex min-h-screen items-center justify-center bg-background px-4 py-12">
      <div className="w-full max-w-[420px]">
        <div className="mb-8 text-center">
          <div className="mx-auto mb-4 flex size-12 items-center justify-center rounded-xl bg-primary text-primary-foreground shadow-[0_1px_2px_rgba(27,77,62,0.18)]">
            <Compass size={22} aria-hidden="true" />
          </div>
          <p className="font-display text-[28px] leading-none tracking-[-0.02em] text-foreground">
            Abdelouhab
          </p>
          <p className="mt-2 inline-flex rounded-full bg-primary-soft px-2.5 py-0.5 text-[10px] font-bold tracking-[0.18em] text-primary uppercase">
            Firm
          </p>
          <h1 className="mt-6 font-display text-[22px] text-foreground">Sign in to your workspace</h1>
          <p className="mt-2 text-[14px] leading-relaxed text-muted-foreground">
            Access clients, document processing, approvals and SnelStart syncing.
          </p>
        </div>

        <form
          onSubmit={handleSubmit}
          className="rounded-xl border border-border bg-surface p-6 shadow-[0_1px_2px_rgba(28,36,33,0.04)]"
        >
          <div className="space-y-4">
            <div className="space-y-2">
              <Label htmlFor="email">Email</Label>
              <Input
                id="email"
                type="email"
                autoComplete="email"
                placeholder="you@example.com"
                value={email}
                onChange={(e) => setEmail(e.target.value)}
                required
              />
            </div>
            <div className="space-y-2">
              <Label htmlFor="password">Password</Label>
              <div className="relative">
                <Input
                  id="password"
                  type={showPassword ? "text" : "password"}
                  autoComplete="current-password"
                  placeholder="Enter your password"
                  value={password}
                  onChange={(e) => setPassword(e.target.value)}
                  className="pr-10"
                  required
                />
                <button
                  type="button"
                  onClick={() => setShowPassword((v) => !v)}
                  className="absolute top-1/2 right-2.5 -translate-y-1/2 rounded-md p-1 text-muted-foreground transition-colors hover:text-foreground"
                  aria-label={showPassword ? "Hide password" : "Show password"}
                >
                  {showPassword ? (
                    <EyeOff size={16} aria-hidden="true" />
                  ) : (
                    <Eye size={16} aria-hidden="true" />
                  )}
                </button>
              </div>
            </div>
          </div>

          <Button type="submit" className="mt-6 w-full" disabled={loading}>
            {loading ? (
              <>
                <Loader2 className="animate-spin" size={16} aria-hidden="true" />
                Signing in…
              </>
            ) : (
              "Sign in"
            )}
          </Button>
        </form>
      </div>
    </div>
  );
}