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// SPDX-FileCopyrightText: 2025 Shota FUJI <pockawoooh@gmail.com>
// SPDX-License-Identifier: AGPL-3.0-only

import { type MessageInitShape } from "@bufbuild/protobuf";
import { createClient } from "@connectrpc/connect";
import { AlertDialog, Button, Flex } from "@radix-ui/themes";
import { useMutation } from "@tanstack/react-query";
import { type UserSchema, type User } from "@yamori/proto/yamori/workspace/v2/user_pb.js";
import { type DeleteUserRequestSchema } from "@yamori/proto/yamori/workspace/v2/delete_user_request_pb.js";
import { WorkspaceService } from "@yamori/proto/yamori/workspace/v2/workspace_service_pb.js";
import { type FC } from "react";

import { useConnectTransport } from "../../contexts/ConnectTransport.tsx";
import { useToast } from "../../contexts/Toast.tsx";
import { IllegalMessageError } from "../../errors/IllegalMessageError.ts";

export interface IsAvailableInput {
	loginUser: User;
	user: User;
}

export function isAvailable({ loginUser, user }: IsAvailableInput): boolean {
	return !!(
		loginUser.id?.value !== user.id?.value &&
		(user.isAdmin ? loginUser.isAdmin : loginUser.permissions?.canDeleteRegularUser)
	);
}

export const Root = AlertDialog.Root;
export const Trigger = AlertDialog.Trigger;

export interface ContentProps {
	user: MessageInitShape<typeof UserSchema>;

	onDeleteStart?(): void;
	onDeleted?(): void;
	onDeleteError?(): void;
}

export const Content: FC<ContentProps> = ({
	user,
	onDeleted,
	onDeleteError,
	onDeleteStart,
}) => {
	const toast = useToast();

	const transport = useConnectTransport();
	const client = createClient(WorkspaceService, transport);

	const deletion = useMutation({
		async mutationFn(req: MessageInitShape<typeof DeleteUserRequestSchema>) {
			const resp = await client.deleteUser(req);
			if (resp.result.case === "ok") {
				return resp.result.value;
			}

			if (typeof resp.result.case === "string") {
				throw resp.result.value;
			}

			throw new IllegalMessageError(resp);
		},
		onSuccess(def) {
			toast.open({
				severity: "success",
				title: `ユーザ「${def.displayName}」を削除しました`,
				dismissible: true,
				type: "background",
			});

			onDeleted?.();
		},
		onError(error: unknown) {
			// TODO: エラーをユーザに表示する (共通のエラー文字列化処理)
			console.error(error);

			toast.open({
				severity: "danger",
				title: `ユーザの削除に失敗しました`,
				dismissible: true,
				type: "foreground",
			});

			onDeleteError?.();
		},
	});

	return (
		<AlertDialog.Content maxWidth="30em">
			<AlertDialog.Title>削除確認</AlertDialog.Title>
			<AlertDialog.Description size="2">
				ユーザ「{user.displayName ?? user.name}」を削除します。
				ユーザの記録も同時に消去されます。
				<br />
				この操作は取り消せません。削除しますか？
			</AlertDialog.Description>
			<Flex gap="3" mt="4" justify="end">
				<AlertDialog.Cancel>
					<Button variant="soft" color="gray">
						キャンセル
					</Button>
				</AlertDialog.Cancel>
				<AlertDialog.Action>
					<Button
						variant="solid"
						color="red"
						onClick={() => {
							deletion.mutate({ id: user.id });

							onDeleteStart?.();
						}}
					>
						削除する
					</Button>
				</AlertDialog.Action>
			</Flex>
		</AlertDialog.Content>
	);
};