import FormContainer from "@/components/FormContainer";
import Pagination from "@/components/Pagination";
import Table from "@/components/Table";
import TableSearch from "@/components/TableSearch";
import { getSupabaseClient } from "@/lib/supabase";
import { ITEM_PER_PAGE } from "@/lib/settings";
import { Tables } from "@/types/supabase";
import Image from "next/image";
import Link from "next/link";
import { auth } from "@clerk/nextjs/server";

type SlotList = Tables<"SchoolTimetableSlot"> & {
    schoolTimetable: (Tables<"SchoolTimetable"> & { academicYear: Tables<"AcademicYear"> | null }) | null;
};

const TimetableSlotListPage = async ({
    searchParams,
}: {
    searchParams: { [key: string]: string | undefined };
}) => {
    const { sessionClaims } = auth();
    const role = (sessionClaims?.metadata as { role?: string })?.role;
    const teacherType = (sessionClaims?.metadata as { teacherType?: string })?.teacherType;
    const schoolId = (sessionClaims?.metadata as { schoolId?: string })?.schoolId;

    const canManageSchool =
        role === "admin" ||
        (role === "teacher" &&
            (teacherType === "INDEPENDENT" || teacherType === "AGENCY"));

    const columns = [
        {
            header: "Slot Name",
            accessor: "name",
        },
        {
            header: "Timetable",
            accessor: "schoolTimetable",
            className: "hidden md:table-cell",
        },
        {
            header: "Start Time",
            accessor: "startTime",
            className: "hidden md:table-cell",
        },
        {
            header: "End Time",
            accessor: "endTime",
            className: "hidden md:table-cell",
        },
        {
            header: "Teaching Slot",
            accessor: "isTeachingSlot",
            className: "hidden md:table-cell",
        },
        ...(canManageSchool
            ? [
                {
                    header: "Actions",
                    accessor: "action",
                },
            ]
            : []),
    ];

    const renderRow = (item: SlotList) => (
        <tr
            key={item.id}
            className="border-b border-gray-200 even:bg-slate-50 text-sm hover:bg-lamaPurpleLight"
        >
            <td className="flex items-center gap-4 p-4">{item.name}</td>
            <td className="hidden md:table-cell text-gray-600">
                {item.schoolTimetable
                    ? `${item.schoolTimetable.name}${item.schoolTimetable.academicYear ? ` (${item.schoolTimetable.academicYear.name})` : ""}`
                    : "—"}
            </td>
            <td className="hidden md:table-cell">{item.startTime}</td>
            <td className="hidden md:table-cell">{item.endTime}</td>
            <td className="hidden md:table-cell">
                {item.isTeachingSlot ? "Yes" : "No"}
            </td>
            <td>
                <div className="flex items-center gap-2">
                    {canManageSchool && (
                        <>
                            <FormContainer
                                table="schoolTimetableSlot"
                                type="update"
                                data={item}
                            />
                            <FormContainer
                                table="schoolTimetableSlot"
                                type="delete"
                                id={item.id}
                            />
                        </>
                    )}
                </div>
            </td>
        </tr>
    );

    const { page, ...queryParams } = searchParams;

    const p = page ? parseInt(page) : 1;
    const supabase = await getSupabaseClient();

    const schoolTimetableId = queryParams.schoolTimetableId
        ? parseInt(queryParams.schoolTimetableId)
        : undefined;

    let query = supabase
        .from("SchoolTimetableSlot")
        .select("*, schoolTimetable:SchoolTimetable(id, name, academicYear:AcademicYear(name))", { count: "exact" })
        .order("position", { ascending: true });

    if (schoolId) {
        query = query.eq("schoolId", schoolId);
    }
    if (schoolTimetableId && !Number.isNaN(schoolTimetableId)) {
        query = query.eq("schoolTimetableId", schoolTimetableId);
    }

    if (queryParams) {
        for (const [key, value] of Object.entries(queryParams)) {
            if (value !== undefined) {
                switch (key) {
                    case "search":
                        query = query.ilike("name", `%${value}%`);
                        break;
                    default:
                        break;
                }
            }
        }
    }

    // PAGINATION
    query = query.range(ITEM_PER_PAGE * (p - 1), ITEM_PER_PAGE * p - 1);

    const { data: rawData, count, error } = await query;

    if (error) {
        console.error("Error fetching timetable slots from Supabase:", error);
    }

    const data = (rawData || []) as unknown as SlotList[];

    let filterTimetableName: string | null = null;
    if (schoolTimetableId && !Number.isNaN(schoolTimetableId)) {
        const { data: st } = await supabase
            .from("SchoolTimetable")
            .select("name, academicYear:AcademicYear(name)")
            .eq("id", schoolTimetableId)
            .single();
        if (st) {
            const ay = (st as { academicYear?: { name: string } }).academicYear;
            filterTimetableName = ay ? `${st.name} (${ay.name})` : st.name;
        }
    }

    return (
        <div className="bg-white p-4 rounded-md flex-1 m-4 mt-0">
            {/* TOP */}
            {filterTimetableName && (
                <div className="mb-2 text-sm text-gray-600 flex items-center gap-2 flex-wrap">
                    <span>Showing slots for: <strong>{filterTimetableName}</strong></span>
                    <Link href="/list/timeslots" className="text-blue-500 hover:underline">Show all slots</Link>
                </div>
            )}
            <div className="flex items-center justify-between">
                <h1 className="hidden md:block text-lg font-semibold">Timetable Slots</h1>
                <div className="flex flex-col md:flex-row items-center gap-4 w-full md:w-auto">
                    <TableSearch />
                    <div className="flex items-center gap-4 self-end">
                        <button className="w-8 h-8 flex items-center justify-center rounded-full bg-lamaYellow">
                            <Image src="/filter.png" alt="" width={14} height={14} />
                        </button>
                        <button className="w-8 h-8 flex items-center justify-center rounded-full bg-lamaYellow">
                            <Image src="/sort.png" alt="" width={14} height={14} />
                        </button>
                        {role === "admin" && (
                            <FormContainer table="schoolTimetableSlot" type="create" />
                        )}
                    </div>
                </div>
            </div>
            {/* LIST */}
            <Table columns={columns} renderRow={renderRow} data={data} />
            {/* PAGINATION */}
            <Pagination page={p} count={count || 0} />
        </div>
    );
};

export default TimetableSlotListPage;