/*
Copyright 2024 New Vector Ltd.
Copyright 2019, 2020 The Matrix.org Foundation C.I.C.
Copyright 2015, 2016 OpenMarket Ltd

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/

import React from "react";
import { RoomMember, RoomStateEvent, MatrixEvent, EventType } from "matrix-js-sdk/src/matrix";
import { CryptoEvent, UserVerificationStatus } from "matrix-js-sdk/src/crypto-api";

import dis from "../../../dispatcher/dispatcher";
import { _t } from "../../../languageHandler";
import { MatrixClientPeg } from "../../../MatrixClientPeg";
import { Action } from "../../../dispatcher/actions";
import EntityTile, { PowerStatus, PresenceState } from "./EntityTile";
import MemberAvatar from "./../avatars/MemberAvatar";
import DisambiguatedProfile from "../messages/DisambiguatedProfile";
import UserIdentifierCustomisations from "../../../customisations/UserIdentifier";
import { E2EState } from "./E2EIcon";
import { asyncSome } from "../../../utils/arrays";
import { getUserDeviceIds } from "../../../utils/crypto/deviceInfo";

interface IProps {
    member: RoomMember;
    showPresence?: boolean;
}

interface IState {
    isRoomEncrypted: boolean;
    e2eStatus?: E2EState;
}

export default class MemberTile extends React.Component<IProps, IState> {
    private userLastModifiedTime?: number;
    private memberLastModifiedTime?: number;

    public static defaultProps = {
        showPresence: true,
    };

    public constructor(props: IProps) {
        super(props);

        this.state = {
            isRoomEncrypted: false,
        };
    }

    public componentDidMount(): void {
        const cli = MatrixClientPeg.safeGet();

        const { roomId } = this.props.member;
        if (roomId) {
            const isRoomEncrypted = cli.isRoomEncrypted(roomId);
            this.setState({
                isRoomEncrypted,
            });
            if (isRoomEncrypted) {
                cli.on(CryptoEvent.UserTrustStatusChanged, this.onUserTrustStatusChanged);
                this.updateE2EStatus();
            } else {
                // Listen for room to become encrypted
                cli.on(RoomStateEvent.Events, this.onRoomStateEvents);
            }
        }
    }

    public componentWillUnmount(): void {
        const cli = MatrixClientPeg.get();

        if (cli) {
            cli.removeListener(RoomStateEvent.Events, this.onRoomStateEvents);
            cli.removeListener(CryptoEvent.UserTrustStatusChanged, this.onUserTrustStatusChanged);
        }
    }

    private onRoomStateEvents = (ev: MatrixEvent): void => {
        if (ev.getType() !== EventType.RoomEncryption) return;
        const { roomId } = this.props.member;
        if (ev.getRoomId() !== roomId) return;

        // The room is encrypted now.
        const cli = MatrixClientPeg.safeGet();
        cli.removeListener(RoomStateEvent.Events, this.onRoomStateEvents);
        this.setState({
            isRoomEncrypted: true,
        });
        this.updateE2EStatus();
    };

    private onUserTrustStatusChanged = (userId: string, trustStatus: UserVerificationStatus): void => {
        if (userId !== this.props.member.userId) return;
        this.updateE2EStatus();
    };

    private async updateE2EStatus(): Promise<void> {
        const cli = MatrixClientPeg.safeGet();
        const { userId } = this.props.member;
        const isMe = userId === cli.getUserId();
        const userTrust = await cli.getCrypto()?.getUserVerificationStatus(userId);
        if (!userTrust?.isCrossSigningVerified()) {
            this.setState({
                e2eStatus: userTrust?.wasCrossSigningVerified() ? E2EState.Warning : E2EState.Normal,
            });
            return;
        }

        const deviceIDs = await getUserDeviceIds(cli, userId);
        const anyDeviceUnverified = await asyncSome(deviceIDs, async (deviceId) => {
            // For your own devices, we use the stricter check of cross-signing
            // verification to encourage everyone to trust their own devices via
            // cross-signing so that other users can then safely trust you.
            // For other people's devices, the more general verified check that
            // includes locally verified devices can be used.
            const deviceTrust = await cli.getCrypto()?.getDeviceVerificationStatus(userId, deviceId);
            return !deviceTrust || (isMe ? !deviceTrust.crossSigningVerified : !deviceTrust.isVerified());
        });
        this.setState({
            e2eStatus: anyDeviceUnverified ? E2EState.Warning : E2EState.Verified,
        });
    }

    public shouldComponentUpdate(nextProps: IProps, nextState: IState): boolean {
        if (
            this.memberLastModifiedTime === undefined ||
            this.memberLastModifiedTime < nextProps.member.getLastModifiedTime()
        ) {
            return true;
        }
        if (
            nextProps.member.user &&
            (this.userLastModifiedTime === undefined ||
                this.userLastModifiedTime < nextProps.member.user.getLastModifiedTime())
        ) {
            return true;
        }
        if (nextState.isRoomEncrypted !== this.state.isRoomEncrypted || nextState.e2eStatus !== this.state.e2eStatus) {
            return true;
        }
        return false;
    }

    private onClick = (): void => {
        dis.dispatch({
            action: Action.ViewUser,
            member: this.props.member,
            push: true,
        });
    };

    private getDisplayName(): string {
        return this.props.member.name;
    }

    private getPowerLabel(): string {
        return _t("member_list|power_label", {
            userName: UserIdentifierCustomisations.getDisplayUserIdentifier(this.props.member.userId, {
                roomId: this.props.member.roomId,
            }),
            powerLevelNumber: this.props.member.powerLevel,
        }).trim();
    }

    public render(): React.ReactNode {
        const member = this.props.member;
        const name = this.getDisplayName();
        const presenceState = member.user?.presence as PresenceState | undefined;

        const av = <MemberAvatar member={member} size="36px" aria-hidden="true" />;

        if (member.user) {
            this.userLastModifiedTime = member.user.getLastModifiedTime();
        }
        this.memberLastModifiedTime = member.getLastModifiedTime();

        const powerStatusMap = new Map([
            [100, PowerStatus.Admin],
            [50, PowerStatus.Moderator],
        ]);

        // Find the nearest power level with a badge
        let powerLevel = this.props.member.powerLevel;
        for (const [pl] of powerStatusMap) {
            if (this.props.member.powerLevel >= pl) {
                powerLevel = pl;
                break;
            }
        }

        const powerStatus = powerStatusMap.get(powerLevel);

        let e2eStatus: E2EState | undefined;
        if (this.state.isRoomEncrypted) {
            e2eStatus = this.state.e2eStatus;
        }

        const nameJSX = <DisambiguatedProfile member={member} fallbackName={name || ""} />;

        return (
            <EntityTile
                {...this.props}
                presenceState={presenceState}
                presenceLastActiveAgo={member.user ? member.user.lastActiveAgo : 0}
                presenceLastTs={member.user ? member.user.lastPresenceTs : 0}
                presenceCurrentlyActive={member.user ? member.user.currentlyActive : false}
                avatarJsx={av}
                title={this.getPowerLabel()}
                name={name}
                nameJSX={nameJSX}
                powerStatus={powerStatus}
                showPresence={this.props.showPresence}
                e2eStatus={e2eStatus}
                onClick={this.onClick}
            />
        );
    }
}