import useUsers from "@/hooks/useUsers";
import {Assignment} from "@/interfaces/results";
import {CorporateUser, Group, User} from "@/interfaces/user";
import {getUserCompanyName} from "@/resources/user";
import {
	activeAssignmentFilter,
	archivedAssignmentFilter,
	futureAssignmentFilter,
	pastAssignmentFilter,
	startHasExpiredAssignmentFilter,
} from "@/utils/assignments";
import clsx from "clsx";
import {groupBy} from "lodash";
import {useState} from "react";
import {BsArrowLeft, BsArrowRepeat, BsPlus} from "react-icons/bs";
import AssignmentCard from "../AssignmentCard";
import AssignmentCreator from "../AssignmentCreator";
import AssignmentView from "../AssignmentView";

interface Props {
	assignments: Assignment[];
	corporateAssignments?: ({corporate?: CorporateUser} & Assignment)[];
	groups: Group[];
	isLoading: boolean;
	user: User;
	onBack: () => void;
	reloadAssignments: () => void;
}

export default function AssignmentsPage({assignments, corporateAssignments, user, groups, isLoading, onBack, reloadAssignments}: Props) {
	const [selectedAssignment, setSelectedAssignment] = useState<Assignment>();
	const [isCreatingAssignment, setIsCreatingAssignment] = useState(false);

	const {users} = useUsers();

	const displayAssignmentView = !!selectedAssignment && !isCreatingAssignment;

	const assignmentsPastExpiredStart = assignments.filter(startHasExpiredAssignmentFilter);

	return (
		<>
			{displayAssignmentView && (
				<AssignmentView
					isOpen={displayAssignmentView}
					onClose={() => {
						setSelectedAssignment(undefined);
						setIsCreatingAssignment(false);
						reloadAssignments();
					}}
					assignment={selectedAssignment}
				/>
			)}
			{/** I'll be using this is creating assingment as a workaround for a key to trigger a new rendering */}
			{isCreatingAssignment && (
				<AssignmentCreator
					assignment={selectedAssignment}
					groups={groups}
					users={[...users, user]}
					user={user}
					isCreating={isCreatingAssignment}
					cancelCreation={() => {
						setIsCreatingAssignment(false);
						setSelectedAssignment(undefined);
						reloadAssignments();
					}}
				/>
			)}
			<div className="w-full flex justify-between items-center">
				<div
					onClick={onBack}
					className="flex gap-2 items-center text-mti-purple-light cursor-pointer hover:text-mti-purple-dark transition ease-in-out duration-300">
					<BsArrowLeft className="text-xl" />
					<span>Back</span>
				</div>
				<div
					onClick={reloadAssignments}
					className="flex gap-2 items-center text-mti-purple-light cursor-pointer hover:text-mti-purple-dark transition ease-in-out duration-300">
					<span>Reload</span>
					<BsArrowRepeat className={clsx("text-xl", isLoading && "animate-spin")} />
				</div>
			</div>
			<div className="flex flex-col gap-2">
				<span className="text-lg font-bold">Active Assignments Status</span>
				<div className="flex items-center gap-4">
					<span>
						<b>Total:</b> {assignments.filter(activeAssignmentFilter).reduce((acc, curr) => acc + curr.results.length, 0)}/
						{assignments.filter(activeAssignmentFilter).reduce((acc, curr) => curr.exams.length + acc, 0)}
					</span>
					{Object.keys(groupBy(corporateAssignments, (x) => x.corporate?.id)).map((x) => (
						<div key={x}>
							<span className="font-semibold">{getUserCompanyName(users.find((u) => u.id === x)!, users, groups)}: </span>
							<span>
								{groupBy(corporateAssignments, (x) => x.corporate?.id)[x].reduce((acc, curr) => curr.results.length + acc, 0)}/
								{groupBy(corporateAssignments, (x) => x.corporate?.id)[x].reduce((acc, curr) => curr.exams.length + acc, 0)}
							</span>
						</div>
					))}
				</div>
			</div>
			<section className="flex flex-col gap-4">
				<h2 className="text-2xl font-semibold">Active Assignments ({assignments.filter(activeAssignmentFilter).length})</h2>
				<div className="flex flex-wrap gap-2">
					{assignments.filter(activeAssignmentFilter).map((a) => (
						<AssignmentCard {...a} users={users} onClick={() => setSelectedAssignment(a)} key={a.id} />
					))}
				</div>
			</section>
			<section className="flex flex-col gap-4">
				<h2 className="text-2xl font-semibold">Planned Assignments ({assignments.filter(futureAssignmentFilter).length})</h2>
				<div className="flex flex-wrap gap-2">
					<div
						onClick={() => setIsCreatingAssignment(true)}
						className="w-[250px] h-[200px] flex flex-col gap-2 items-center justify-center bg-white hover:bg-mti-purple-ultralight text-mti-purple-light hover:text-mti-purple-dark border border-mti-gray-platinum hover:drop-shadow p-4 cursor-pointer rounded-xl transition ease-in-out duration-300">
						<BsPlus className="text-6xl" />
						<span className="text-lg">New Assignment</span>
					</div>
					{assignments.filter(futureAssignmentFilter).map((a) => (
						<AssignmentCard
							{...a}
							users={users}
							onClick={() => {
								setSelectedAssignment(a);
								setIsCreatingAssignment(true);
							}}
							key={a.id}
						/>
					))}
				</div>
			</section>
			<section className="flex flex-col gap-4">
				<h2 className="text-2xl font-semibold">Past Assignments ({assignments.filter(pastAssignmentFilter).length})</h2>
				<div className="flex flex-wrap gap-2">
					{assignments.filter(pastAssignmentFilter).map((a) => (
						<AssignmentCard
							{...a}
							users={users}
							onClick={() => setSelectedAssignment(a)}
							key={a.id}
							allowDownload
							reload={reloadAssignments}
							allowArchive
							allowExcelDownload
						/>
					))}
				</div>
			</section>
			<section className="flex flex-col gap-4">
				<h2 className="text-2xl font-semibold">Assignments start expired ({assignmentsPastExpiredStart.length})</h2>
				<div className="flex flex-wrap gap-2">
					{assignments.filter(startHasExpiredAssignmentFilter).map((a) => (
						<AssignmentCard
							{...a}
							users={users}
							onClick={() => setSelectedAssignment(a)}
							key={a.id}
							allowDownload
							reload={reloadAssignments}
							allowArchive
							allowExcelDownload
						/>
					))}
				</div>
			</section>
			<section className="flex flex-col gap-4">
				<h2 className="text-2xl font-semibold">Archived Assignments ({assignments.filter(archivedAssignmentFilter).length})</h2>
				<div className="flex flex-wrap gap-2">
					{assignments.filter(archivedAssignmentFilter).map((a) => (
						<AssignmentCard
							{...a}
							users={users}
							onClick={() => setSelectedAssignment(a)}
							key={a.id}
							allowDownload
							reload={reloadAssignments}
							allowUnarchive
							allowExcelDownload
						/>
					))}
				</div>
			</section>
		</>
	);
}