zabbix_export:
  version: '7.0'
  media_types:
    -
      name: Rocket.Chat
      type: WEBHOOK
      parameters:
        -
          name: alert_message
          value: '{ALERT.MESSAGE}'
        -
          name: alert_subject
          value: '{ALERT.SUBJECT}'
        -
          name: event_nseverity
          value: '{EVENT.NSEVERITY}'
        -
          name: event_source
          value: '{EVENT.SOURCE}'
        -
          name: event_update_action
          value: '{EVENT.UPDATE.ACTION}'
        -
          name: event_update_message
          value: '{EVENT.UPDATE.MESSAGE}'
        -
          name: event_update_status
          value: '{EVENT.UPDATE.STATUS}'
        -
          name: event_update_user
          value: '{USER.FULLNAME}'
        -
          name: event_value
          value: '{EVENT.VALUE}'
        -
          name: 'field_1_full:Host'
          value: '{HOST.NAME} [{HOST.IP}]'
        -
          name: 'field_2_short:Severity'
          value: '{EVENT.SEVERITY}'
        -
          name: 'field_3_short:Event time'
          value: '{EVENT.DATE} {EVENT.TIME}'
        -
          name: 'field_3_short_r:Recovery time'
          value: '{EVENT.RECOVERY.DATE} {EVENT.RECOVERY.TIME}'
        -
          name: 'field_4_short_r:Event duration'
          value: '{EVENT.DURATION}'
        -
          name: 'field_5_short:Operational data'
          value: '{EVENT.OPDATA}'
        -
          name: 'field_999_full_p:Trigger description'
          value: '{TRIGGER.DESCRIPTION}'
        -
          name: rc_api_url
          value: api/v1/
        -
          name: rc_msg_id
          value: '{EVENT.TAGS.__zbx_rc_id}'
        -
          name: rc_room_id
          value: '{EVENT.TAGS.__zbx_rc_rid}'
        -
          name: rc_send_to
          value: '{ALERT.SENDTO}'
        -
          name: rc_title_link
          value: '{$ZABBIX.URL}/tr_events.php?triggerid={TRIGGER.ID}&eventid={EVENT.ID}'
        -
          name: rc_url
          value: '<PLACE YOUR INSTANCE URL HERE>'
        -
          name: rc_user_id
          value: '<PLACE USER ID HERE>'
        -
          name: rc_user_token
          value: '<PLACE TOKEN HERE>'
        -
          name: use_default_message
          value: 'false'
      script: |
        var RocketChat = {
            params: {},
        
            setParams: function (params) {
                if (typeof params !== 'object') {
                    return;
                }
        
                RocketChat.params = params;
                if (RocketChat.params.url && RocketChat.params.api_url) {
                    if (!RocketChat.params.url.endsWith('/')) {
                        RocketChat.params.url += '/';
                    }
                    if (!RocketChat.params.api_url.endsWith('/')) {
                        RocketChat.params.api_url += '/';
                    }
                    if (RocketChat.params.api_url.startsWith('/')) {
                        RocketChat.params.api_url = RocketChat.params.api_url.substring(1);
                    }
        
                    RocketChat.params.url += RocketChat.params.api_url;
                }
            },
        
            setProxy: function (HTTPProxy) {
                RocketChat.HTTPProxy = HTTPProxy;
            },
        
            addFields: function (fields) {
                var data = [];
        
                if (typeof fields === 'object' && Object.keys(fields).length) {
                    Object.keys(fields)
                        .forEach(function(field) {
                            if (fields[field] === '') {
                                Zabbix.log(4, '[ RocketChat Webhook ] Field "' + field +
                                    '" can\'t be empty. The field ignored.');
                            }
                            else {
                                try {
                                    var parts = field.split(':'),
                                        prefix = parts[0].split('_');
        
                                    if (typeof prefix[2] === 'undefined'
                                            || (prefix[2] === 'p' && params.event_value === '1')
                                            || (prefix[2] === 'r' && params.event_value === '0')) {
                                        data.push({
                                            title: field.substring(field.indexOf(':') + 1),
                                            value: fields[field],
                                            short: prefix[1] === 'short'
                                        });
                                    }
                                }
                                catch (error) {
                                    Zabbix.log(4, '[ RocketChat Webhook ] Can\'t parse field "' + field +
                                        '". The field ignored.');
                                }
                            }
                        });
                }
        
                return data;
            },
        
            request: function (method, query, data) {
                ['url', 'api_url', 'user_id', 'user_token', 'send_to'].forEach(function (field) {
                    if (typeof RocketChat.params !== 'object' || typeof RocketChat.params[field] === 'undefined'
                            || RocketChat.params[field] === '' ) {
                        throw 'Required parameter is not set: "' + field + '".';
                    }
                });
        
                var response,
                    url = RocketChat.params.url + query,
                    request = new HttpRequest();
        
                request.addHeader('Content-Type: application/json');
                request.addHeader('X-Auth-Token:' + RocketChat.params.user_token);
                request.addHeader('X-User-Id:' + RocketChat.params.user_id);
        
                if (typeof RocketChat.HTTPProxy !== 'undefined' && RocketChat.HTTPProxy !== '') {
                    request.setProxy(RocketChat.HTTPProxy);
                }
        
                if (typeof data !== 'undefined') {
                    data = JSON.stringify(data);
                }
        
                Zabbix.log(4, '[ RocketChat Webhook ] Sending request: ' + url +
                    ((typeof data === 'string') ? ('\n' + data) : ''));
        
                switch (method) {
                    case 'get':
                        response = request.get(url, data);
                        break;
        
                    case 'post':
                        response = request.post(url, data);
                        break;
        
                    default:
                        throw 'Unsupported HTTP request method: ' + method;
                }
        
                Zabbix.log(4, '[ RocketChat Webhook ] Received response with status code ' +
                    request.getStatus() + '\n' + response);
        
                if (response !== null) {
                    try {
                        response = JSON.parse(response);
                    }
                    catch (error) {
                        Zabbix.log(4, '[ RocketChat Webhook ] Failed to parse response received from RocketChat');
                        response = null;
                    }
                }
        
                if (request.getStatus() < 200 || request.getStatus() >= 300) {
                    var message = 'Request failed with status code ' + request.getStatus();
        
                    if (response !== null && typeof response.message !== 'undefined') {
                        message += ': ' + JSON.stringify(response.message);
                    }
                    else if (response !== null && typeof response.error !== 'undefined') {
                        message += ': ' + JSON.stringify(response.error);
                    }
        
                    throw message + '. Check debug log for more information.';
                }
        
                return {
                    status: request.getStatus(),
                    response: response
                };
            },
        
            postMessage: function(use_default_message, message, fields) {
                var data = {
                    channel: RocketChat.params.send_to,
                    attachments: [{
                        collapsed: false,
                        color: RocketChat.params.color,
                        title: params.alert_subject
                    }]
                };
        
                if (RocketChat.params.title_link) {
                    data.attachments[0].title_link = RocketChat.params.title_link;
                }
        
                if (use_default_message) {
                    data.attachments[0].text = message;
                }
                else {
                    data.attachments[0].fields = RocketChat.addFields(fields);
                }
        
                var result = RocketChat.request('post', 'chat.postMessage', data);
        
                if (typeof result.response !== 'object' || typeof result.response.message._id === 'undefined') {
                    throw 'Cannot send RocketChat message. Check debug log for more information.';
                }
        
                return {
                    id: result.response.message._id,
                    rid: result.response.message.rid,
                    channel: result.response.channel
                };
            },
        
            sendMessage: function(update, fields) {
        
                var data = {
                    message: {
                        rid: RocketChat.params.room_id,
                        tmid: RocketChat.params.msg_id,
                        tshow: true
                    }
                };
        
                if (update.status === '0') {
                    data.message.attachments = [{
                        collapsed: false,
                        color: RocketChat.params.color,
                        title: params.alert_subject,
                        title_link: RocketChat.params.title_link,
                        fields: RocketChat.addFields(fields)
                    }];
                }
                else {
                    data.message.alias = update.user;
                    data.message.msg = update.action;
                    if (update.message) {
                        data.message.attachments = [{
                            color: RocketChat.params.color,
                            text: update.message
                        }];
                    }
                }
        
                RocketChat.request('post', 'chat.sendMessage', data);
            },
        
            getMessageLink: function(rid, id) {
                var room = RocketChat.request('get', 'rooms.info?roomId=' + encodeURIComponent(rid)),
                    link = params.rc_url +
                        (params.rc_url.endsWith('/') ? '' : '/');
        
                switch (room.response.room.t) {
                    case 'c':
                        link += 'channel/' + room.response.room.name + '?msg=' + id;
                        break;
        
                    case 'p':
                        link += 'group/' + room.response.room.name + '?msg=' + id;
                        break;
        
                    case 'd':
                        link += 'direct/' + rid + '?msg=' + id;
                        break;
        
                    default:
                        Zabbix.log(4, '[ RocketChat Webhook ] Can\'t get room type. Link to message will not be added.');
                }
        
                return link;
            }
        };
        
        try {
            var params = JSON.parse(value),
                response,
                fields = {},
                rc = {},
                update = {},
                result = {tags: {}},
                required_params = ['alert_subject', 'alert_message', 'event_source', 'event_value'],
                severities = [
                    {name: 'not_classified', color: '#97AAB3'},
                    {name: 'information', color: '#7499FF'},
                    {name: 'warning', color: '#FFC859'},
                    {name: 'average', color: '#FFA059'},
                    {name: 'high', color: '#E97659'},
                    {name: 'disaster', color: '#E45959'},
                    {name: 'resolved', color: '#009900'},
                    {name: 'default', color: '#000000'}
                ];
        
            Object.keys(params)
                .forEach(function (key) {
                    if (key.startsWith('rc_')) {
                        rc[key.substring(3)] = params[key];
                    }
                    else if (key.startsWith('field_')) {
                        fields[key.substring(6)] = params[key];
                    }
                    else if (key.startsWith('event_update_')) {
                        update[key.substring(13)] = params[key];
                    }
                    else if (required_params.indexOf(key) !== -1 && params[key] === '') {
                        throw 'Parameter "' + key + '" can\'t be empty.';
                    }
                });
        
            if ([0, 1, 2, 3].indexOf(parseInt(params.event_source)) === -1) {
                throw 'Incorrect "event_source" parameter given: ' + params.event_source + '\nMust be 0-3.';
            }
        
            // Forcing parameters for non trigger-based events.
            if (params.event_source !== '0') {
                params.use_default_message = 'true';
                params.event_nseverity = '0';
                params.rc_title_link = false;
            }
        
            // Check {EVENT.VALUE} for trigger-based and internal events.
            if (params.event_value !== '0' && params.event_value !== '1'
                    && (params.event_source === '0' || params.event_source === '3')) {
                throw 'Incorrect "event_value" parameter given: ' + params.event_value + '\nMust be 0 or 1.';
            }
        
            // Check {EVENT.UPDATE.STATUS} only for trigger-based events.
            if (params.event_update_status !== '0' && params.event_update_status !== '1' && params.event_source === '0') {
                throw 'Incorrect "event_update_status" parameter given: ' + params.event_update_status + '\nMust be 0 or 1.';
            }
        
            if ([0, 1, 2, 3, 4, 5].indexOf(parseInt(params.event_nseverity)) === -1) {
                params.event_nseverity = '7';
            }
        
            if (params.event_value === '0') {
                params.event_nseverity = '6';
            }
        
            RocketChat.setParams(rc);
            RocketChat.setProxy(params.HTTPProxy);
            RocketChat.params.color = severities[params.event_nseverity].color;
        
            // Send default message if use_default_message === true.
            if (params.use_default_message.toLowerCase() === 'true') {
                response = RocketChat.postMessage(true, params.alert_message);
                result.tags.__zbx_rc_id = response.id;
                result.tags.__zbx_rc_rid = response.rid;
                result.tags.__zbx_rc_msg_url = RocketChat.getMessageLink(response.rid, response.id);
            }
            // Send message for trigger-based events.
            else if (params.event_value === '1' && update.status === '0') {
                response = RocketChat.postMessage(false, params.alert_message, fields);
                result.tags.__zbx_rc_id = response.id;
                result.tags.__zbx_rc_rid = response.rid;
                result.tags.__zbx_rc_msg_url = RocketChat.getMessageLink(response.rid, response.id);
            }
            // Send thread message for trigger-based event.
            else {
                RocketChat.sendMessage(update, fields);
            }
        
            return JSON.stringify(result);
        }
        catch (error) {
            Zabbix.log(3, '[ RocketChat Webhook ] ERROR: ' + error);
            throw 'Sending failed: ' + error;
        }
      process_tags: 'YES'
      show_event_menu: 'YES'
      event_menu_url: '{EVENT.TAGS.__zbx_rc_msg_url}'
      event_menu_name: Rocket.Chat
      message_templates:
        -
          event_source: TRIGGERS
          operation_mode: PROBLEM
          subject: '[{EVENT.STATUS}] {EVENT.NAME}'
          message: |
            Problem started at {EVENT.TIME} on {EVENT.DATE}
            Problem name: {EVENT.NAME}
            Host: {HOST.NAME}
            Severity: {EVENT.SEVERITY}
            Operational data: {EVENT.OPDATA}
            Original problem ID: {EVENT.ID}
            {TRIGGER.URL}
        -
          event_source: TRIGGERS
          operation_mode: RECOVERY
          subject: '[{EVENT.STATUS}] {EVENT.NAME}'
          message: |
            Problem has been resolved in {EVENT.DURATION} at {EVENT.RECOVERY.TIME} on {EVENT.RECOVERY.DATE}
            Problem name: {EVENT.NAME}
            Host: {HOST.NAME}
            Severity: {EVENT.SEVERITY}
            Original problem ID: {EVENT.ID}
            {TRIGGER.URL}
        -
          event_source: TRIGGERS
          operation_mode: UPDATE
          subject: '[{EVENT.STATUS}] {EVENT.NAME}'
          message: |
            {USER.FULLNAME} {EVENT.UPDATE.ACTION} problem at {EVENT.UPDATE.DATE} {EVENT.UPDATE.TIME}.
            {EVENT.UPDATE.MESSAGE}
            
            Current problem status is {EVENT.STATUS}, acknowledged: {EVENT.ACK.STATUS}.
        -
          event_source: DISCOVERY
          operation_mode: PROBLEM
          subject: 'Discovery: {DISCOVERY.DEVICE.STATUS} {DISCOVERY.DEVICE.IPADDRESS}'
          message: |
            Discovery rule: {DISCOVERY.RULE.NAME}
            
            Device IP: {DISCOVERY.DEVICE.IPADDRESS}
            Device DNS: {DISCOVERY.DEVICE.DNS}
            Device status: {DISCOVERY.DEVICE.STATUS}
            Device uptime: {DISCOVERY.DEVICE.UPTIME}
            
            Device service name: {DISCOVERY.SERVICE.NAME}
            Device service port: {DISCOVERY.SERVICE.PORT}
            Device service status: {DISCOVERY.SERVICE.STATUS}
            Device service uptime: {DISCOVERY.SERVICE.UPTIME}
        -
          event_source: AUTOREGISTRATION
          operation_mode: PROBLEM
          subject: 'Autoregistration: {HOST.HOST}'
          message: |
            Host name: {HOST.HOST}
            Host IP: {HOST.IP}
            Agent port: {HOST.PORT}