implementation of telegram for checkly#995

packages/cli/src/constructs/index.ts

@@ -25,4 +25,5 @@ export * from './phone-call-alert-channel'
 export * from './retry-strategy'
 export * from './multi-step-check'
 export * from './alert-escalation-policy'
-export * from './msteams-alert-channel'
+export * from './msteams-alert-channel'
+export * from './telegram-alert-channel'

packages/cli/src/constructs/telegram-alert-channel.ts

@@ -0,0 +1,78 @@
+import { AlertChannel, AlertChannelProps } from './alert-channel'
+import { HttpHeader } from './http-header'
+import { HttpRequestMethod } from './api-check'
+import { QueryParam } from './query-param'
+import { Session } from './project'
+import { WebhookAlertChannel, WebhookAlertChannelProps } from './webhook-alert-channel'
+
+export interface TelegramAlertChannelProps extends AlertChannelProps {
+    /**
+     * The name of your Telegram alert
+     */
+    name: string
+    /**
+     * The chat id of your Telegram bot.
+     */
+    chat_id: string
+    /**
+     * API token for your telegram bot.
+     */
+    api_token: string
+
+    /**
+     * An optional template for use in the GET URL.
+     */
+    template?: string
+}
+
+/**
+ * Creates an Telegram Alert Channel
+ *
+ * @remarks
+ *
+ * This class make use of the Alert Channel endpoints.
+ */
+export class TelegramAlertChannel extends AlertChannel {
+    name: string
+    chat_id: string
+    api_token: string
+    template?: string
+    url: string
+    method: HttpRequestMethod
+
+    /**
+     * Constructs the Telegram Alert Channel instance
+     *
+     * @param logicalId unique project-scoped resource name identification
+     * @param props Telegram alert channel configuration properties
+     * Fix following url:
+     * {@link https://checklyhq.com/docs/cli/constructs/#Telegramalertchannel Read more in the docs}
+    */
+    constructor(logicalId: string, props: TelegramAlertChannelProps) {
+        super(logicalId, props)
+        this.name = props.name;
+        this.chat_id = props.chat_id;
+        this.api_token = props.api_token;
+        this.template = props.template || `{{ALERT_TITLE}} at {{STARTED_AT}} in {{RUN_LOCATION}} ({{RESPONSE_TIME}}ms) Tags: {{#each TAGS}} {{this}} {{#unless @last}},{{/unless}} {{/each}} View check result: {{RESULT_LINK}}`;
+        this.url = `https://api.telegram.org/bot${props.api_token}/sendMessage?chat_id=${props.chat_id}&text=${this.template}`;
+        this.method = 'GET';
+        Session.registerConstruct(this)
+    }
+
+    synthesize() {
+        return {
+            ...super.synthesize(),
+            type: 'WEBHOOK',
+            config: {
+                name: this.name,
+                chat_id: this.chat_id,
+                api_token: this.api_token,
+                url: this.url,
+                template: this.template,
+                method: this.method,
+            },
+        }
+    }
+}
+
+