feat: campaigns api (#1225)

Author: vishalnarkhede

src/campaign.ts

@@ -0,0 +1,97 @@
+import { StreamChat } from './client';
+import { APIResponse, CampaignData, DefaultGenerics, ExtendableGenerics } from './types';
+
+export class Campaign<StreamChatGenerics extends ExtendableGenerics = DefaultGenerics> {
+  id: string | null;
+  data?: CampaignData;
+  client: StreamChat<StreamChatGenerics>;
+
+  constructor(client: StreamChat<StreamChatGenerics>, id: string | null, data?: CampaignData) {
+    this.client = client;
+    this.id = id;
+    this.data = data;
+  }
+
+  async create() {
+    const body = {
+      id: this.id,
+      message_template: this.data?.message_template,
+      segment_ids: this.data?.segment_ids,
+      sender_id: this.data?.sender_id,
+      channel_template: this.data?.channel_template,
+      create_channels: this.data?.create_channels,
+      description: this.data?.description,
+      name: this.data?.name,
+      user_ids: this.data?.user_ids,
+    };
+
+    const result = await this.client.createCampaign(body);
+
+    this.id = result.campaign.id;
+    this.data = result.campaign;
+    return result;
+  }
+
+  verifyCampaignId() {
+    if (!this.id) {
+      throw new Error(
+        'Campaign id is missing. Either create the campaign using campaign.create() or set the id during instantiation - const campaign = client.campaign(id)',
+      );
+    }
+  }
+
+  async start(scheduledFor?: string) {
+    this.verifyCampaignId();
+
+    return await this.client.startCampaign(this.id as string, scheduledFor);
+  }
+
+  async update(data: Partial<CampaignData>) {
+    this.verifyCampaignId();
+
+    return this.client.updateCampaign(this.id as string, data);
+  }
+
+  async delete() {
+    this.verifyCampaignId();
+
+    return await this.client.delete<APIResponse>(this.client.baseURL + `/campaigns/${this.id}`);
+  }
+
+  async schedule(params: { scheduledFor: number }) {
+    this.verifyCampaignId();
+
+    const { scheduledFor } = params;
+    const { campaign } = await this.client.patch<{ campaign: Campaign }>(
+      this.client.baseURL + `/campaigns/${this.id}/schedule`,
+      {
+        scheduled_for: scheduledFor,
+      },
+    );
+    return campaign;
+  }
+
+  async stop() {
+    this.verifyCampaignId();
+
+    return this.client.patch<{ campaign: Campaign }>(this.client.baseURL + `/campaigns/${this.id}/stop`);
+  }
+
+  async pause() {
+    this.verifyCampaignId();
+
+    return this.client.patch<{ campaign: Campaign }>(this.client.baseURL + `/campaigns/${this.id}/pause`);
+  }
+
+  async resume() {
+    this.verifyCampaignId();
+
+    return this.client.patch<{ campaign: Campaign }>(this.client.baseURL + `/campaigns/${this.id}/resume`);
+  }
+
+  async get() {
+    this.verifyCampaignId();
+
+    return this.client.getCampaign(this.id as string);
+  }
+}