// app/portal/my-settings/page.tsx
"use client";

import { useEffect, useMemo, useState } from "react";
import Link from "next/link";

type Row = {
    id: string | number;
    submission_id?: string | number | null;
    setting_title?: string | null;
    status?: string | null;
    last_modified_date?: string | null;
    collection: "settings_co2gal" | "settings_co2gan" | "settings_fiber" | "settings_uv";
};

const COLLECTIONS: Array<Row["collection"]> = [
    "settings_co2gal",
"settings_co2gan",
"settings_fiber",
"settings_uv",
];

const LABEL: Record<Row["collection"], string> = {
    settings_co2gal: "CO₂ Galvo",
    settings_co2gan: "CO₂ Gantry",
    settings_fiber: "Fiber",
    settings_uv: "UV",
};

// Route to the existing detail page for view/edit (you can customize)
function detailHref(row: Row) {
    const subId = row.submission_id ?? row.id;
    switch (row.collection) {
        case "settings_co2gal": return `/settings/co2-galvo/${subId}?edit=1`;
        case "settings_co2gan": return `/settings/co2-gantry/${subId}?edit=1`;
        case "settings_fiber":  return `/settings/fiber/${subId}?edit=1`;
        case "settings_uv":     return `/settings/uv/${subId}?edit=1`;
    }
}

export default function MySettingsPage() {
    const [loading, setLoading] = useState(true);
    const [me, setMe] = useState<{ id: string; username?: string | null } | null>(null);
    const [rows, setRows] = useState<Row[]>([]);
    const [q, setQ] = useState("");

    // 1) get current user id
    useEffect(() => {
        let canceled = false;
        (async () => {
            try {
                const r = await fetch(`/api/dx/users/me?fields=id,username`, {
                    credentials: "include",
                    cache: "no-store",
                });
                const j = await r.json();
                const id = j?.data?.id ?? j?.id;
                if (!canceled) setMe(id ? { id: String(id), username: j?.data?.username ?? j?.username } : null);
            } catch {
                if (!canceled) setMe(null);
            }
        })();
        return () => { canceled = true; };
    }, []);

    // 2) fetch my settings from each collection
    useEffect(() => {
        if (!me?.id) return;
        let canceled = false;
        setLoading(true);

        (async () => {
            const all: Row[] = [];
            for (const coll of COLLECTIONS) {
                const url = new URL(`/api/dx/items/${coll}`, window.location.origin);
                url.searchParams.set("limit", "-1");
                url.searchParams.set("sort", "-last_modified_date");
                url.searchParams.set("fields", "id,submission_id,setting_title,status,last_modified_date");
                url.searchParams.set("filter[owner][_eq]", me.id);

                try {
                    const r = await fetch(url.toString(), { credentials: "include", cache: "no-store" });
                    const j = await r.json();
                    const data = Array.isArray(j?.data) ? j.data : [];
                    for (const item of data) {
                        all.push({
                            id: item.id,
                            submission_id: item.submission_id ?? null,
                            setting_title: item.setting_title ?? null,
                            status: item.status ?? null,
                            last_modified_date: item.last_modified_date ?? null,
                            collection: coll,
                        });
                    }
                } catch (e) {
                    console.warn(`Failed to load ${coll}:`, e);
                }
            }

            if (!canceled) {
                setRows(all);
                setLoading(false);
            }
        })();

        return () => { canceled = true; };
    }, [me?.id]);

    const filtered = useMemo(() => {
        const needle = q.trim().toLowerCase();
        if (!needle) return rows;
        return rows.filter((r) =>
        [r.setting_title, LABEL[r.collection], r.status, r.last_modified_date]
        .filter(Boolean)
        .some((v) => String(v).toLowerCase().includes(needle))
        );
    }, [rows, q]);

    async function onDelete(row: Row) {
        if (!confirm(`Delete "${row.setting_title || "Untitled"}" from ${LABEL[row.collection]}?`)) return;
        try {
            const r = await fetch(`/api/dx/items/${row.collection}/${row.id}`, {
                method: "DELETE",
                credentials: "include",
            });
            if (!r.ok) {
                const j = await r.json().catch(() => null);
                throw new Error(j?.errors?.[0]?.message || `HTTP ${r.status}`);
            }
            setRows((prev) => prev.filter((x) => !(x.collection === row.collection && String(x.id) === String(row.id))));
        } catch (e: any) {
            alert(`Delete failed: ${e?.message || e}`);
        }
    }

    return (
        <main className="mx-auto max-w-6xl px-4 py-8">
        <h1 className="text-2xl font-semibold mb-4">My Settings</h1>

        <div className="mb-4 flex items-center gap-3">
        <input
        className="border rounded px-3 py-2 w-full max-w-md"
        placeholder="Search my settings…"
        value={q}
        onChange={(e) => setQ(e.currentTarget.value)}
        />
        <span className="text-sm opacity-70">{rows.length} total</span>
        </div>

        {loading ? (
            <p>Loading…</p>
        ) : filtered.length === 0 ? (
            <p className="opacity-70">No settings yet.</p>
        ) : (
            <div className="overflow-x-auto">
            <table className="min-w-full text-sm">
            <thead>
            <tr className="bg-muted">
            <th className="px-2 py-2 text-left">Title</th>
            <th className="px-2 py-2 text-left">Collection</th>
            <th className="px-2 py-2 text-left">Status</th>
            <th className="px-2 py-2 text-left">Updated</th>
            <th className="px-2 py-2 text-left">Actions</th>
            </tr>
            </thead>
            <tbody>
            {filtered.map((r) => (
                <tr key={`${r.collection}:${r.id}`} className="border-b hover:bg-muted/30">
                <td className="px-2 py-2">{r.setting_title || "Untitled"}</td>
                <td className="px-2 py-2">{LABEL[r.collection]}</td>
                <td className="px-2 py-2">{r.status || "—"}</td>
                <td className="px-2 py-2">{r.last_modified_date ? new Date(r.last_modified_date).toLocaleString() : "—"}</td>
                <td className="px-2 py-2">
                <div className="flex items-center gap-3">
                <Link href={detailHref(r)} className="underline">Edit</Link>
                <button className="text-red-600 underline" onClick={() => onDelete(r)}>
                Delete
                </button>
                </div>
                </td>
                </tr>
            ))}
            </tbody>
            </table>
            </div>
        )}
        </main>
    );
}