// components/account/ProfileEditor.tsx
"use client";

import { useEffect, useState } from "react";

type Me = {
    id: string;
    username: string;
    first_name?: string | null;
    last_name?: string | null;
    email?: string | null;
    location?: string | null;
    avatar?: { id: string; filename_download?: string } | null;
};

export default function ProfileEditor({
    me: meProp,
    onUpdated,
}: {
    me?: Me | null;
    onUpdated?: () => void;
}) {
    const [me, setMe] = useState<Me | null>(meProp ?? null);
    const [first_name, setFirst] = useState("");
    const [last_name, setLast] = useState("");
    const [email, setEmail] = useState("");
    const [profileLocation, setProfileLocation] = useState("");
    const [msg, setMsg] = useState<string | null>(null);
    const [busy, setBusy] = useState(false);
    const [loading, setLoading] = useState(!meProp);

    const nextAccount = "/portal/account";

    // Load profile if not provided via props
    useEffect(() => {
        if (meProp) {
            setMe(meProp);
            setLoading(false);
            return;
        }
        let alive = true;
        (async () => {
            try {
                const r = await fetch("/api/account", { credentials: "include", cache: "no-store" });
                if (!r.ok) throw new Error(String(r.status));
                const j = await r.json();
                const user: Me | undefined = j?.user ?? j?.data ?? undefined;
                if (!user) throw new Error("Bad response");
                if (alive) setMe(user);
            } catch (e: any) {
                if (alive) setMsg(`Failed to load: ${e?.message || e}`);
            } finally {
                if (alive) setLoading(false);
            }
        })();
        return () => {
            alive = false;
        };
    }, [meProp]);

    useEffect(() => {
        if (!me) return;
        setFirst(me.first_name || "");
        setLast(me.last_name || "");
        setEmail(me.email || "");
        setProfileLocation(me.location || "");
    }, [me]);

    // Auto-retry a pending sensitive update after coming back from reauth
    useEffect(() => {
        const raw = typeof window !== "undefined" ? sessionStorage.getItem("pendingProfileUpdate") : null;
        if (!raw) return;
        let pending: Record<string, any> | null = null;
        try {
            pending = JSON.parse(raw);
        } catch {
            pending = null;
        }
        if (!pending) {
            sessionStorage.removeItem("pendingProfileUpdate");
            return;
        }

        (async () => {
            try {
                const r = await fetch("/api/account/profile", {
                    method: "PATCH",
                    headers: { "Content-Type": "application/json" },
                    body: JSON.stringify(pending),
                });
                const j = await r.json().catch(() => ({}));
                if (!r.ok) {
                    setMsg(j?.error || "Update after re-auth failed");
                } else {
                    setMsg("Saved after re-authentication.");
                    onUpdated?.();
                }
            } finally {
                sessionStorage.removeItem("pendingProfileUpdate");
            }
        })();
    }, [onUpdated]);

    const onSave = async () => {
        setMsg(null);
        setBusy(true);
        try {
            const payload: Record<string, any> = {
                first_name: first_name.trim(),
                last_name: last_name.trim(),
                email: email.trim() || null, // allow clearing email
                location: profileLocation.trim(),
            };
            const r = await fetch("/api/account/profile", {
                method: "PATCH",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify(payload),
            });

            if (r.status === 428) {
                // Need reauth for sensitive change (email)
                if (typeof window !== "undefined") {
                    // Stash the pending payload so we can retry after reauth
                    sessionStorage.setItem("pendingProfileUpdate", JSON.stringify(payload));
                    window.location.assign(
                        `/auth/sign-in?reauth=1&next=${encodeURIComponent(nextAccount + "#security")}`
                    );
                }
                return;
            }
            if (r.status === 401) {
                if (typeof window !== "undefined") {
                    window.location.assign(`/auth/sign-in?reauth=1&next=${encodeURIComponent(nextAccount)}`);
                }
                return;
            }

            const j = await r.json().catch(() => ({}));
            if (!r.ok) {
                setMsg(j?.error || "Update failed");
                return;
            }
            setMsg("Saved.");
            onUpdated?.();
        } catch (e: any) {
            setMsg(e?.message || "Update failed");
        } finally {
            setBusy(false);
        }
    };

    if (loading) return <div className="rounded-md border p-4 text-sm opacity-70">Loading editor…</div>;

    return (
        <div className="rounded-md border p-4 space-y-3">
        <h3 className="font-semibold">Edit Profile</h3>

        <div className="grid sm:grid-cols-2 gap-3 text-sm">
        <label className="grid gap-1">
        <span className="opacity-60">First Name</span>
        <input
        className="rounded-md border px-2 py-1"
        value={first_name}
        onChange={(e) => setFirst(e.target.value)}
        />
        </label>

        <label className="grid gap-1">
        <span className="opacity-60">Last Name</span>
        <input
        className="rounded-md border px-2 py-1"
        value={last_name}
        onChange={(e) => setLast(e.target.value)}
        />
        </label>

        <label className="grid gap-1 sm:col-span-2">
        <span className="opacity-60">Email (reauth required)</span>
        <input
        className="rounded-md border px-2 py-1"
        type="email"
        value={email}
        onChange={(e) => setEmail(e.target.value)}
        placeholder="you@example.com"
        />
        </label>

        <label className="grid gap-1 sm:col-span-2">
        <span className="opacity-60">Location</span>
        <input
        className="rounded-md border px-2 py-1"
        value={profileLocation}
        onChange={(e) => setProfileLocation(e.target.value)}
        placeholder="City, Country"
        />
        </label>
        </div>

        <div className="flex items-center gap-3">
        <button
        onClick={onSave}
        disabled={busy}
        className="rounded-md bg-black text-white px-3 py-2 text-sm disabled:opacity-60"
        >
        {busy ? "Saving…" : "Save Changes"}
        </button>
        {msg && <div className="text-sm opacity-80">{msg}</div>}
        </div>
        </div>
    );
}