helix-engage-server/packages/widget-src/src/api.ts

import type { WidgetConfig, Doctor, TimeSlot } from './types';

let baseUrl = '';
let widgetKey = '';

export const initApi = (url: string, key: string) => {
    baseUrl = url;
    widgetKey = key;
};

const headers = () => ({
    'Content-Type': 'application/json',
    'X-Widget-Key': widgetKey,
});

export const fetchInit = async (): Promise<WidgetConfig> => {
    const res = await fetch(`${baseUrl}/api/widget/init?key=${widgetKey}`);
    if (!res.ok) throw new Error('Widget init failed');
    return res.json();
};

export const fetchDoctors = async (): Promise<Doctor[]> => {
    const res = await fetch(`${baseUrl}/api/widget/doctors?key=${widgetKey}`);
    if (!res.ok) throw new Error('Failed to load doctors');
    return res.json();
};

export const fetchSlots = async (doctorId: string, date: string): Promise<TimeSlot[]> => {
    const res = await fetch(`${baseUrl}/api/widget/slots?key=${widgetKey}&doctorId=${doctorId}&date=${date}`);
    if (!res.ok) throw new Error('Failed to load slots');
    return res.json();
};

export const submitBooking = async (data: any): Promise<{ appointmentId: string; reference: string }> => {
    const res = await fetch(`${baseUrl}/api/widget/book?key=${widgetKey}`, {
        method: 'POST', headers: headers(), body: JSON.stringify(data),
    });
    if (!res.ok) throw new Error('Booking failed');
    return res.json();
};

export const submitLead = async (data: any): Promise<{ leadId: string }> => {
    const res = await fetch(`${baseUrl}/api/widget/lead?key=${widgetKey}`, {
        method: 'POST', headers: headers(), body: JSON.stringify(data),
    });
    if (!res.ok) throw new Error('Submission failed');
    return res.json();
};

export const streamChat = async (messages: any[], captchaToken?: string): Promise<ReadableStream> => {
    const res = await fetch(`${baseUrl}/api/widget/chat?key=${widgetKey}`, {
        method: 'POST', headers: headers(),
        body: JSON.stringify({ messages, captchaToken }),
    });
    if (!res.ok || !res.body) throw new Error('Chat failed');
    return res.body;
};