import crypto from 'node:crypto';

import type { IDirectoryChannelResult, IDirectoryUserResult, IRoom, IUser } from '@rocket.chat/core-typings';
import { Settings, Users, WorkspaceCredentials } from '@rocket.chat/models';
import {
	ajv,
	isShieldSvgProps,
	isSpotlightProps,
	parseSpotlightUsernames,
	parseSpotlightType,
	isDirectoryProps,
	isFingerprintProps,
	isMeteorCall,
	meSuccessResponseSchema,
	validateUnauthorizedErrorResponse,
	validateForbiddenErrorResponse,
	validateBadRequestErrorResponse,
} from '@rocket.chat/rest-typings';
import type { MeApiSuccessResponse } from '@rocket.chat/rest-typings';
import { escapeHTML } from '@rocket.chat/tools';
import EJSON from 'ejson';
import { check } from 'meteor/check';
import { DDPRateLimiter } from 'meteor/ddp-rate-limiter';
import { Meteor } from 'meteor/meteor';

import { passwordPolicy } from '../../lib/auth/passwordPolicy';
import { i18n } from '../../lib/i18n';
import { notifyOnSettingChangedById } from '../../lib/notifyListener';
import { getBaseUserFields } from '../../lib/utils/functions/getBaseUserFields';
import { isSMTPConfigured } from '../../lib/utils/functions/isSMTPConfigured';
import { getURL } from '../../lib/utils/getURL';
import { browseChannelsMethod } from '../../meteor-methods/rooms/browseChannels';
import { spotlightMethod } from '../../publications/spotlight';
import { settings } from '../../settings';
import { resetAuditedSettingByUser, updateAuditedByUser } from '../../settings/lib/auditedSettingUpdates';
import { API } from '../api';
import { getPaginationItems } from '../lib/getPaginationItems';
import { getUserFromParams } from '../lib/getUserFromParams';
import { getUserInfo } from '../lib/getUserInfo';
import { logMethodCallError } from '../lib/logMethodCallError';

/**
 * @openapi
 *  /api/v1/me:
 *    get:
 *      description: Gets user data of the authenticated user
 *      security:
 *        - authenticated: []
 *      responses:
 *        200:
 *          description: The user data of the authenticated user
 *          content:
 *            application/json:
 *              schema:
 *                allOf:
 *                  - $ref: '#/components/schemas/ApiSuccessV1'
 *                  - type: object
 *                    properties:
 *                      name:
 *                        type: string
 *                      username:
 *                        type: string
 *                      nickname:
 *                        type: string
 *                      emails:
 *                        type: array
 *                        items:
 *                          type: object
 *                          properties:
 *                            address:
 *                              type: string
 *                            verified:
 *                              type: boolean
 *                      email:
 *                        type: string
 *                      status:
 *                        $ref: '#/components/schemas/UserStatus'
 *                      statusDefault:
 *                        $ref: '#/components/schemas/UserStatus'
 *                      statusText:
 *                        $ref: '#/components/schemas/UserStatus'
 *                      statusConnection:
 *                        $ref: '#/components/schemas/UserStatus'
 *                      bio:
 *                        type: string
 *                      avatarOrigin:
 *                        type: string
 *                        enum: [none, local, upload, url]
 *                      utcOffset:
 *                        type: number
 *                      language:
 *                        type: string
 *                      settings:
 *                        type: object
 *                        properties:
 *                          preferences:
 *                            type: object
 *                      enableAutoAway:
 *                        type: boolean
 *                      idleTimeLimit:
 *                        type: number
 *                      roles:
 *                        type: array
 *                      active:
 *                        type: boolean
 *                      defaultRoom:
 *                        type: string
 *                      customFields:
 *                        type: array
 *                      requirePasswordChange:
 *                        type: boolean
 *                      requirePasswordChangeReason:
 *                        type: string
 *                      services:
 *                        type: object
 *                        properties:
 *                          github:
 *                            type: object
 *                          gitlab:
 *                            type: object
 *                          password:
 *                            type: object
 *                            properties:
 *                              exists:
 *                                type: boolean
 *                          totp:
 *                            type: object
 *                            properties:
 *                              enabled:
 *                                type: boolean
 *                          email2fa:
 *                            type: object
 *                            properties:
 *                              enabled:
 *                                type: boolean
 *                      statusLivechat:
 *                        type: string
 *                        enum: [available, 'not-available']
 *                      banners:
 *                        type: array
 *                        items:
 *                          type: object
 *                          properties:
 *                            id:
 *                              type: string
 *                            title:
 *                              type: string
 *                            text:
 *                              type: string
 *                            textArguments:
 *                              type: array
 *                              items: {}
 *                            modifiers:
 *                              type: array
 *                              items:
 *                                type: string
 *                            infoUrl:
 *                              type: string
 *                      oauth:
 *                        type: object
 *                        properties:
 *                          authorizedClients:
 *                            type: array
 *                            items:
 *                              type: string
 *                      _updatedAt:
 *                        type: string
 *                        format: date-time
 *                      avatarETag:
 *                        type: string
 *        default:
 *          description: Unexpected error
 *          content:
 *            application/json:
 *              schema:
 *                $ref: '#/components/schemas/ApiFailureV1'
 */
API.v1.get(
	'me',
	{
		authRequired: true,
		userWithoutUsername: true,
		response: {
			200: ajv.compile<MeApiSuccessResponse>(meSuccessResponseSchema),
			401: validateUnauthorizedErrorResponse,
		},
	},
	async function action() {
		const userFields = { ...getBaseUserFields(), services: 1 };
		const user = (await Users.findOneById(this.userId, { projection: userFields })) as IUser;

		return API.v1.success(await getUserInfo(user));
	},
);

let onlineCache = 0;
let onlineCacheDate = 0;
const cacheInvalid = 60000; // 1 minute

const shieldSvgResponseSchema = ajv.compile<string>({
	type: 'string',
	description: 'SVG image markup',
});

API.v1.get(
	'shield.svg',
	{
		authRequired: false,
		rateLimiterOptions: {
			numRequestsAllowed: 60,
			intervalTimeInMS: 60000,
		},
		query: isShieldSvgProps,
		response: {
			200: shieldSvgResponseSchema,
			400: validateBadRequestErrorResponse,
		},
	},
	async function action() {
		const { type, icon } = this.queryParams;
		let { channel, name } = this.queryParams;
		if (!settings.get('API_Enable_Shields')) {
			throw new Meteor.Error('error-endpoint-disabled', 'This endpoint is disabled', {
				route: '/api/v1/shield.svg',
			});
		}

		const types = settings.get<string>('API_Shield_Types');
		if (
			type &&
			types !== '*' &&
			!types
				.split(',')
				.map((t: string) => t.trim())
				.includes(type)
		) {
			throw new Meteor.Error('error-shield-disabled', 'This shield type is disabled', {
				route: '/api/v1/shield.svg',
			});
		}
		const hideIcon = icon === 'false';
		if (hideIcon && !name?.trim()) {
			return API.v1.failure('Name cannot be empty when icon is hidden');
		}

		let text;
		let backgroundColor = '#4c1';
		switch (type) {
			case 'online':
				if (Date.now() - onlineCacheDate > cacheInvalid) {
					onlineCache = await Users.countUsersNotOffline();
					onlineCacheDate = Date.now();
				}

				text = `${onlineCache} ${i18n.t('Online')}`;
				break;
			case 'channel':
				if (!channel) {
					return API.v1.failure('Shield channel is required for type "channel"');
				}

				text = `#${channel}`;
				break;
			case 'user':
				if (settings.get('API_Shield_user_require_auth') && !this.user) {
					return API.v1.failure('You must be logged in to do this.');
				}
				const user = await getUserFromParams(this.queryParams);

				// Respect the server's choice for using their real names or not
				if (user.name && settings.get('UI_Use_Real_Name')) {
					text = `${user.name}`;
				} else {
					text = `@${user.username}`;
				}

				switch (user.status) {
					case 'online':
						backgroundColor = '#1fb31f';
						break;
					case 'away':
						backgroundColor = '#dc9b01';
						break;
					case 'busy':
						backgroundColor = '#bc2031';
						break;
					case 'offline':
						backgroundColor = '#a5a1a1';
				}
				break;
			default:
				text = i18n.t('Join_Chat').toUpperCase();
		}

		const iconSize = hideIcon ? 7 : 24;
		const leftSize = name ? name.length * 6 + 7 + iconSize : iconSize;
		const rightSize = text.length * 6 + 20;
		const width = leftSize + rightSize;
		const height = 20;

		channel = escapeHTML(channel);
		text = escapeHTML(text);
		name = escapeHTML(name);

		const svgBody = `
				<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="${width}" height="${height}">
					<linearGradient id="b" x2="0" y2="100%">
						<stop offset="0" stop-color="#bbb" stop-opacity=".1"/>
						<stop offset="1" stop-opacity=".1"/>
					</linearGradient>
					<mask id="a">
						<rect width="${width}" height="${height}" rx="3" fill="#fff"/>
					</mask>
					<g mask="url(#a)">
						<path fill="#555" d="M0 0h${leftSize}v${height}H0z"/>
						<path fill="${backgroundColor}" d="M${leftSize} 0h${rightSize}v${height}H${leftSize}z"/>
						<path fill="url(#b)" d="M0 0h${width}v${height}H0z"/>
					</g>
						${hideIcon ? '' : `<image x="5" y="3" width="14" height="14" xlink:href="${getURL('/assets/favicon.svg', { full: true })}"/>`}
					<g fill="#fff" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="11">
						${
							name
								? `<text x="${iconSize}" y="15" fill="#010101" fill-opacity=".3">${name}</text>
						<text x="${iconSize}" y="14">${name}</text>`
								: ''
						}
						<text x="${leftSize + 7}" y="15" fill="#010101" fill-opacity=".3">${text}</text>
						<text x="${leftSize + 7}" y="14">${text}</text>
					</g>
				</svg>
			`
			.trim()
			.replace(/\>[\s]+\</gm, '><');

		return {
			statusCode: 200 as const,
			body: svgBody,
			headers: { 'Content-Type': 'image/svg+xml;charset=utf-8' },
		};
	},
);

const spotlightResponseSchema = ajv.compile<{
	users: (Pick<IUser, 'name' | '_id' | 'username'> &
		Partial<Pick<IUser, 'status' | 'statusText' | 'avatarETag'>> & {
			nickname?: string;
			outside?: boolean;
		})[];
	rooms: Pick<IRoom, 't' | 'name' | 'lastMessage' | '_id'>[];
}>({
	type: 'object',
	properties: {
		users: {
			type: 'array',
			items: {
				type: 'object',
				properties: {
					_id: { type: 'string' },
					name: { type: 'string' },
					username: { type: 'string' },
					status: { type: 'string' },
					statusText: { type: 'string' },
					avatarETag: { type: 'string' },
				},
				required: ['_id', 'name', 'username'],
				additionalProperties: true,
			},
		},
		rooms: {
			type: 'array',
			items: {
				type: 'object',
				properties: {
					_id: { type: 'string' },
					t: { type: 'string' },
					name: { type: 'string' },
					lastMessage: { $ref: '#/components/schemas/IMessage' },
				},
				required: ['_id', 't', 'name'],
				additionalProperties: true,
			},
		},
		success: { type: 'boolean', enum: [true] },
	},
	required: ['users', 'rooms', 'success'],
	additionalProperties: false,
});

API.v1.get(
	'spotlight',
	{
		// DDP `spotlight` accepts anonymous calls (Accounts_AllowAnonymousRead).
		// Keep parity so anonymous-user / embedded-layout flows can still
		// resolve a public channel through the navbar search.
		authRequired: false,
		rateLimiterOptions: { numRequestsAllowed: 100, intervalTimeInMS: 100000 },
		query: isSpotlightProps,
		response: {
			200: spotlightResponseSchema,
			400: validateBadRequestErrorResponse,
			401: validateUnauthorizedErrorResponse,
		},
	},
	async function action() {
		const { query, usernames, type, rid } = this.queryParams;

		const result = await spotlightMethod({
			text: query,
			userId: this.userId,
			usernames: parseSpotlightUsernames(usernames),
			type: parseSpotlightType(type),
			rid,
		});

		return API.v1.success(result);
	},
);

const directoryResponseSchema = ajv.compile<{
	result: (IDirectoryUserResult | IDirectoryChannelResult)[];
	count: number;
	offset: number;
	total: number;
}>({
	type: 'object',
	properties: {
		result: {
			type: 'array',
			items: {
				oneOf: [{ $ref: '#/components/schemas/IDirectoryUserResult' }, { $ref: '#/components/schemas/IDirectoryChannelResult' }],
			},
		},
		count: { type: 'number' },
		offset: { type: 'number' },
		total: { type: 'number' },
		success: { type: 'boolean', enum: [true] },
	},
	required: ['result', 'count', 'offset', 'total', 'success'],
	additionalProperties: false,
});

API.v1.get(
	'directory',
	{
		authRequired: true,
		rateLimiterOptions: { numRequestsAllowed: 100, intervalTimeInMS: 100000 },
		query: isDirectoryProps,
		response: {
			200: directoryResponseSchema,
			400: validateBadRequestErrorResponse,
			401: validateUnauthorizedErrorResponse,
		},
	},
	async function action() {
		const { offset, count } = await getPaginationItems(this.queryParams);
		const { sort, query } = await this.parseJsonQuery();
		const { text, type, workspace = 'local' } = this.queryParams;

		const filter = {
			...(query ? { ...query } : {}),
			...(text ? { text } : {}),
			...(type ? { type } : {}),
			...(workspace ? { workspace } : {}),
		};

		if (sort && Object.keys(sort).length > 1) {
			return API.v1.failure('This method support only one "sort" parameter');
		}
		const sortBy = sort ? Object.keys(sort)[0] : undefined;
		const sortDirection = sort && Object.values(sort)[0] === 1 ? 'asc' : 'desc';

		const user = await Users.findOneById(this.userId, { projection: { __rooms: 1, roles: 1 } });
		const result = await browseChannelsMethod(
			{
				...filter,
				sortBy,
				sortDirection,
				offset: Math.max(0, offset),
				limit: Math.max(0, count),
			},
			user,
		);

		if (!result) {
			return API.v1.failure('Please verify the parameters');
		}
		return API.v1.success({
			result: result.results as (IDirectoryUserResult | IDirectoryChannelResult)[],
			count: result.results.length,
			offset,
			total: result.total,
		});
	},
);

const pwGetPolicyResponseSchema = ajv.compile<{ enabled: boolean; policy: [string, Record<string, number | boolean>?][] }>({
	type: 'object',
	properties: {
		enabled: { type: 'boolean' },
		policy: { type: 'array', items: { type: 'array' } },
	},
	additionalProperties: true,
});

API.v1.get(
	'pw.getPolicy',
	{
		authRequired: false,
		response: {
			200: pwGetPolicyResponseSchema,
		},
	},
	function action() {
		return API.v1.success(passwordPolicy.getPasswordPolicy());
	},
);

/**
 * @openapi
 *  /api/v1/stdout.queue:
 *    get:
 *      description: Retrieves last 1000 lines of server logs
 *      security:
 *        - authenticated: ['view-logs']
 *      responses:
 *        200:
 *          description: The user data of the authenticated user
 *          content:
 *            application/json:
 *              schema:
 *                allOf:
 *                  - $ref: '#/components/schemas/ApiSuccessV1'
 *                  - type: object
 *                    properties:
 *                      queue:
 *                        type: array
 *                        items:
 *                          type: object
 *                          properties:
 *                            id:
 *                              type: string
 *                            string:
 *                              type: string
 *                            ts:
 *                              type: string
 *                              format: date-time
 *        default:
 *          description: Unexpected error
 *          content:
 *            application/json:
 *              schema:
 *                $ref: '#/components/schemas/ApiFailureV1'
 */

declare module '@rocket.chat/rest-typings' {
	// eslint-disable-next-line @typescript-eslint/naming-convention
	interface Endpoints {
		'method.call/:method': {
			POST: (params: { method: string; args: any[] }) => any;
		};
		'method.callAnon/:method': {
			POST: (params: { method: string; args: any[] }) => any;
		};
	}
}

const methodCallResponseSchema = ajv.compile<{ message: string }>({
	type: 'object',
	properties: { message: { type: 'string' }, success: { type: 'boolean', enum: [true] } },
	required: ['message'],
	additionalProperties: false,
});

const methodCallErrorResponseSchema = ajv.compile<{ message: string }>({
	type: 'object',
	oneOf: [
		{
			properties: {
				message: { type: 'string' },
				success: { type: 'boolean', enum: [false] },
			},
			required: ['message', 'success'],
			additionalProperties: false,
		},
		{
			properties: {
				success: { type: 'boolean', enum: [false] },
				error: { type: 'string' },
				errorType: { type: 'string' },
				stack: { type: 'string' },
				details: { anyOf: [{ type: 'string' }, { type: 'object' }] },
			},
			required: ['success'],
			additionalProperties: false,
		},
	],
});

const mountResult = ({
	id,
	error,
	result,
}: {
	id: string;
	error?: unknown;
	result?: unknown;
}): {
	message: string;
} => ({
	message: EJSON.stringify({
		msg: 'result',
		id,
		error: error as any,
		result: result as any,
	}),
});

// had to create two different endpoints for authenticated and non-authenticated calls
// because restivus does not provide 'this.userId' if 'authRequired: false'
API.v1.post(
	'method.call/:method',
	{
		authRequired: true,
		userWithoutUsername: true,
		rateLimiterOptions: false,
		body: isMeteorCall,
		applyMeteorContext: true,
		response: {
			200: methodCallResponseSchema,
			400: methodCallErrorResponseSchema,
			401: validateUnauthorizedErrorResponse,
			429: ajv.compile({
				type: 'object',
				properties: { success: { type: 'boolean', enum: [false] }, error: { type: 'string' } },
				required: ['success'],
				additionalProperties: true,
			}),
		},
	},
	async function action() {
		check(this.bodyParams, {
			message: String,
		});

		const data = EJSON.parse(this.bodyParams.message);

		const { method, params, id } = data;

		const connectionId =
			this.token ||
			crypto
				.createHash('sha256')
				.update((this.requestIp ?? '') + this.user._id)
				.digest('hex');

		const rateLimiterInput = {
			userId: this.userId,
			clientAddress: this.requestIp,
			type: 'method',
			name: method,
			connectionId,
		};

		try {
			DDPRateLimiter._increment(rateLimiterInput);
			const rateLimitResult = DDPRateLimiter._check(rateLimiterInput);
			if (!rateLimitResult.allowed) {
				throw new Meteor.Error('too-many-requests', DDPRateLimiter.getErrorMessage(rateLimitResult), {
					timeToReset: rateLimitResult.timeToReset,
				});
			}

			return API.v1.success(mountResult({ id, result: await Meteor.callAsync(method, ...params) }));
		} catch (err) {
			logMethodCallError(method, err);

			return API.v1.failure(mountResult({ id, error: err }));
		}
	},
);

API.v1.post(
	'method.callAnon/:method',
	{
		authRequired: false,
		userWithoutUsername: true,
		rateLimiterOptions: false,
		body: isMeteorCall,
		applyMeteorContext: true,
		response: {
			200: methodCallResponseSchema,
			400: methodCallErrorResponseSchema,
		},
	},
	async function action() {
		check(this.bodyParams, {
			message: String,
		});

		const data = EJSON.parse(this.bodyParams.message);

		const { method, params, id } = data;

		const connectionId =
			this.token ||
			crypto
				.createHash('sha256')
				.update(this.requestIp ?? '')
				.digest('hex');

		const rateLimiterInput = {
			userId: this.userId || undefined,
			clientAddress: this.requestIp,
			type: 'method',
			name: method,
			connectionId,
		};

		try {
			DDPRateLimiter._increment(rateLimiterInput);

			const rateLimitResult = DDPRateLimiter._check(rateLimiterInput);
			if (!rateLimitResult.allowed) {
				throw new Meteor.Error('too-many-requests', DDPRateLimiter.getErrorMessage(rateLimitResult), {
					timeToReset: rateLimitResult.timeToReset,
				});
			}

			return API.v1.success(mountResult({ id, result: await Meteor.callAsync(method, ...params) }));
		} catch (err) {
			logMethodCallError(method, err);

			return API.v1.failure(mountResult({ id, error: err }));
		}
	},
);

const smtpCheckResponseSchema = ajv.compile<{ isSMTPConfigured: boolean }>({
	type: 'object',
	properties: {
		isSMTPConfigured: { type: 'boolean' },
		success: { type: 'boolean', enum: [true] },
	},
	required: ['isSMTPConfigured', 'success'],
	additionalProperties: false,
});

API.v1.get(
	'smtp.check',
	{
		authRequired: true,
		response: {
			200: smtpCheckResponseSchema,
			401: validateUnauthorizedErrorResponse,
		},
	},
	async function action() {
		return API.v1.success({ isSMTPConfigured: isSMTPConfigured() });
	},
);

const fingerprintResponseSchema = ajv.compile<void>({
	type: 'object',
	properties: { success: { type: 'boolean', enum: [true] } },
	required: ['success'],
	additionalProperties: false,
});

/**
 * @openapi
 *  /api/v1/fingerprint:
 *    post:
 *      description: Update Fingerprint definition as a new workspace or update of configuration
 *      security:
 *        $ref: '#/security/authenticated'
 *      requestBody:
 *        content:
 *          application/json:
 *            schema:
 *              type: object
 *              properties:
 *                setDeploymentAs:
 *                  type: string
 *            example: |
 *              {
 *                 "setDeploymentAs": "new-workspace"
 *              }
 *      responses:
 *        200:
 *          description: Workspace successfully configured
 *          content:
 *            application/json:
 *              schema:
 *                $ref: '#/components/schemas/ApiSuccessV1'
 *        default:
 *          description: Unexpected error
 *          content:
 *            application/json:
 *              schema:
 *                $ref: '#/components/schemas/ApiFailureV1'
 */
API.v1.post(
	'fingerprint',
	{
		authRequired: true,
		permissionsRequired: ['manage-cloud'],
		body: isFingerprintProps,
		response: {
			200: fingerprintResponseSchema,
			401: validateUnauthorizedErrorResponse,
			403: validateForbiddenErrorResponse,
			400: validateBadRequestErrorResponse,
		},
	},
	async function action() {
		check(this.bodyParams, {
			setDeploymentAs: String,
		});

		const settingsIds: string[] = [];

		if (this.bodyParams.setDeploymentAs === 'new-workspace') {
			await WorkspaceCredentials.removeAllCredentials();

			settingsIds.push(
				'Cloud_Service_Agree_PrivacyTerms',
				'Cloud_Workspace_Id',
				'Cloud_Workspace_Name',
				'Cloud_Workspace_Client_Id',
				'Cloud_Workspace_Client_Secret',
				'Cloud_Workspace_Client_Secret_Expires_At',
				'Cloud_Workspace_Registration_Client_Uri',
				'Cloud_Workspace_PublicKey',
				'Cloud_Workspace_License',
				'Cloud_Workspace_Had_Trial',
				'uniqueID',
			);
		}

		settingsIds.push('Deployment_FingerPrint_Verified');

		const auditSettingOperation = updateAuditedByUser({
			_id: this.userId,
			username: this.user.username ?? '',
			ip: this.requestIp ?? '',
			useragent: this.request.headers.get('user-agent') ?? '',
		});

		const promises = settingsIds.map((settingId) => {
			if (settingId === 'uniqueID') {
				return auditSettingOperation(Settings.resetValueById, 'uniqueID', process.env.DEPLOYMENT_ID || crypto.randomUUID());
			}

			if (settingId === 'Cloud_Workspace_Access_Token_Expires_At') {
				return auditSettingOperation(Settings.resetValueById, 'Cloud_Workspace_Access_Token_Expires_At', new Date(0));
			}

			if (settingId === 'Deployment_FingerPrint_Verified') {
				return auditSettingOperation(Settings.updateValueById, 'Deployment_FingerPrint_Verified', true);
			}

			return resetAuditedSettingByUser({
				_id: this.userId,
				username: this.user.username ?? '',
				ip: this.requestIp ?? '',
				useragent: this.request.headers.get('user-agent') ?? '',
			})(Settings.resetValueById, settingId);
		});

		(await Promise.all(promises)).forEach((value, index) => {
			if (value?.modifiedCount) {
				void notifyOnSettingChangedById(settingsIds[index]);
			}
		});

		return API.v1.success();
	},
);