// components/portal/ProjectsSwitcher.tsx
"use client";

import { useRouter, useSearchParams } from "next/navigation";
import dynamic from "next/dynamic";
import { cn } from "@/lib/utils";

// Canonical viewer page; use dynamic in a client component
const ProjectsView = dynamic(() => import("@/app/projects/page"), { ssr: false });

const TABS = [
    { key: "list", label: "Projects" },
{ key: "add",  label: "Add Project" },
];

function Panel({ tab }: { tab: string }) {
    switch (tab) {
        case "list":
            return (
                <div className="rounded-md border p-4">
                <ProjectsView />
                </div>
            );
        case "add":
            return (
                <div className="rounded-md border p-4 space-y-3">
                <h3 className="font-semibold">Add Project</h3>
                <div className="text-sm opacity-70">
                Project submission form will be embedded here. We’ll wire to an authenticated endpoint (e.g. <code>POST /api/my/projects</code>) and auto-assign owner.
                </div>
                <ul className="text-sm list-disc pl-5 opacity-70">
                <li>Fields: name (required), description, attachments, etc.</li>
                <li>Server derives <code>owner</code> from bearer (<code>/users/me</code>)</li>
                <li>On success: toast + navigate back to list</li>
                </ul>
                </div>
            );
        default:
            return null;
    }
}

export default function ProjectsSwitcher() {
    const router = useRouter();
    const sp = useSearchParams();
    const active = sp.get("t") || "list";

    function setTab(nextKey: string) {
        const q = new URLSearchParams(sp.toString());
        q.set("t", nextKey);
        router.replace(`/portal/projects?${q.toString()}`, { scroll: false });
    }

    return (
        <div>
        <div className="mb-4 flex flex-wrap items-center gap-2">
        {TABS.map(({ key, label }) => (
            <button
            key={key}
            onClick={() => setTab(key)}
            className={cn(
                "rounded-md border px-3 py-1.5 text-sm transition",
                active === key ? "bg-primary text-primary-foreground" : "hover:bg-muted"
            )}
            >
            {label}
            </button>
        ))}
        </div>

        <Panel tab={active} />
        </div>
    );
}