feat: Complete code integration of modules (#18)

The complete code integration is done.

Co-authored-by: Sagnik <sagnik7896@gmail.com>
Reviewed-on: #18

app/src/lib/api.ts

@@ -17,3 +17,119 @@ export const API_URL = (
 ).replace(/\/$/, '');
 
 export const WS_URL = API_URL.replace(/^http/, 'ws');
+
+export interface ScatterDataPoint {
+  id: string;
+  name: string;
+  sentiment_score: number;
+  response_time_ms: number;
+  score: number;
+  qualification: string;
+  kanban_status: string;
+}
+
+export interface LeadRecord {
+  id: string;
+  name: string;
+  email?: string | null;
+  phone?: string | null;
+  source: string;
+  notes: string;
+  qualification: string;
+  score: number;
+  kanban_status: string;
+  stage: string;
+  budget: string;
+  unit_interest: string;
+  metadata: Record<string, unknown>;
+  created_at?: string | null;
+  updated_at?: string | null;
+}
+
+export interface LeadDemographics {
+  by_source: Array<{ source: string; lead_count: number; avg_score: number }>;
+  by_qualification: Array<{ qualification: string; lead_count: number }>;
+}
+
+export interface ChatLogRecord {
+  id: string;
+  lead_id: string;
+  sender: string;
+  channel: string;
+  content: string;
+  metadata: Record<string, unknown>;
+  created_at: string | null;
+}
+
+export interface MarketingCampaignSummary {
+  id: string;
+  name: string;
+  platform: 'meta' | 'google';
+  status: 'active' | 'paused' | 'completed';
+  budget: number;
+  spent: number;
+  impressions: number;
+  clicks: number;
+  conversions: number;
+}
+
+async function requestJson<T>(path: string): Promise<T> {
+  const response = await fetch(`${API_URL}${path}`, {
+    headers: { Accept: 'application/json' },
+  });
+  if (!response.ok) {
+    throw new Error(`Request failed: ${response.status}`);
+  }
+  return response.json() as Promise<T>;
+}
+
+async function requestWrappedData<T>(path: string): Promise<T> {
+  const payload = await requestJson<{ data: T }>(path);
+  return payload.data;
+}
+
+export async function getSentimentScatter(): Promise<ScatterDataPoint[]> {
+  return requestJson<ScatterDataPoint[]>('/api/analytics/sentiment-scatter');
+}
+
+export async function getCatalystCampaigns(): Promise<MarketingCampaignSummary[]> {
+  return requestWrappedData<MarketingCampaignSummary[]>('/api/catalyst/campaigns');
+}
+
+export async function getLeads(): Promise<LeadRecord[]> {
+  const payload = await requestJson<{ data: LeadRecord[] }>('/api/leads');
+  return payload.data;
+}
+
+export async function getLead(leadId: string): Promise<LeadRecord> {
+  return requestWrappedData<LeadRecord>(`/api/leads/${leadId}`);
+}
+
+export async function getKanbanBoard() {
+  return requestWrappedData<Array<{ status: string; stage: string; count: number; items: LeadRecord[] }>>('/api/kanban/board');
+}
+
+export async function getChatLogs(leadId?: string): Promise<ChatLogRecord[]> {
+  const suffix = leadId ? `?lead_id=${encodeURIComponent(leadId)}` : '';
+  return requestWrappedData<ChatLogRecord[]>(`/api/chat-logs${suffix}`);
+}
+
+export async function getLeadDemographics(): Promise<LeadDemographics> {
+  return requestWrappedData<LeadDemographics>('/api/leads/demographics');
+}
+
+export async function seedSyntheticLeads(count = 100): Promise<{ seeded: number; chat_logs_seeded: number; batch: string }> {
+  const response = await fetch(`${API_URL}/api/leads/seed-synthetic`, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+      Accept: 'application/json',
+    },
+    body: JSON.stringify({ count }),
+  });
+  if (!response.ok) {
+    throw new Error(`Seed request failed: ${response.status}`);
+  }
+  const payload = await response.json() as { data: { seeded: number; chat_logs_seeded: number; batch: string } };
+  return payload.data;
+}