import { Request, Response } from 'express';
import axios from 'axios';

const SACHET_BASE_URL = 'https://sachet.ndma.gov.in/cap_public_website';

/**
 * Proxy endpoint for fetching earthquake alerts from SACHET API
 */
export const fetchEarthquakeAlerts = async (req: Request, res: Response): Promise<Response> => {
    try {
        const response = await axios.get(`${SACHET_BASE_URL}/FetchEarthquakeAlerts`, {
            timeout: 10000,
            headers: {
                'Accept': 'application/json',
                'User-Agent': 'Prashikshak-Backend/1.0'
            }
        });

        return res.status(200).json({
            success: true,
            data: response.data
        });
    } catch (error: any) {
        console.error('Error fetching earthquake alerts:', error.message);
        return res.status(error.response?.status || 500).json({
            success: false,
            message: 'Failed to fetch earthquake alerts',
            error: error.message
        });
    }
};

/**
 * Proxy endpoint for fetching IMD Nowcast alerts from SACHET API
 */
export const fetchNowcastAlerts = async (req: Request, res: Response): Promise<Response> => {
    try {
        const response = await axios.get(`${SACHET_BASE_URL}/FetchIMDNowcastAlerts`, {
            timeout: 10000,
            headers: {
                'Accept': 'application/json',
                'User-Agent': 'Prashikshak-Backend/1.0'
            }
        });

        return res.status(200).json({
            success: true,
            data: response.data
        });
    } catch (error: any) {
        console.error('Error fetching nowcast alerts:', error.message);
        return res.status(error.response?.status || 500).json({
            success: false,
            message: 'Failed to fetch nowcast alerts',
            error: error.message
        });
    }
};

/**
 * Proxy endpoint for fetching all alert details from SACHET API
 */
export const fetchAllAlertDetails = async (req: Request, res: Response): Promise<Response> => {
    try {
        const response = await axios.get(`${SACHET_BASE_URL}/FetchAllAlertDetails`, {
            timeout: 10000,
            headers: {
                'Accept': 'application/json',
                'User-Agent': 'Prashikshak-Backend/1.0'
            }
        });

        return res.status(200).json({
            success: true,
            data: response.data
        });
    } catch (error: any) {
        console.error('Error fetching all alert details:', error.message);
        return res.status(error.response?.status || 500).json({
            success: false,
            message: 'Failed to fetch all alert details',
            error: error.message
        });
    }
};

/**
 * Proxy endpoint for fetching statewise filter data from SACHET API
 */
export const fetchStatewiseFilter = async (req: Request, res: Response): Promise<Response> => {
    try {
        const response = await axios.get(`${SACHET_BASE_URL}/../locales/en/statewiseFilter.json`, {
            timeout: 10000,
            headers: {
                'Accept': 'application/json',
                'User-Agent': 'Prashikshak-Backend/1.0'
            }
        });

        return res.status(200).json({
            success: true,
            data: response.data
        });
    } catch (error: any) {
        console.error('Error fetching statewise filter:', error.message);
        return res.status(error.response?.status || 500).json({
            success: false,
            message: 'Failed to fetch statewise filter',
            error: error.message
        });
    }
};

/**
 * Fetch all alerts in a single request (optimized endpoint)
 */
export const fetchAllAlerts = async (req: Request, res: Response): Promise<Response> => {
    try {
        const [earthquakeRes, nowcastRes, generalRes] = await Promise.all([
            axios.get(`${SACHET_BASE_URL}/FetchEarthquakeAlerts`, {
                timeout: 10000,
                headers: { 'Accept': 'application/json', 'User-Agent': 'Prashikshak-Backend/1.0' }
            }),
            axios.get(`${SACHET_BASE_URL}/FetchIMDNowcastAlerts`, {
                timeout: 10000,
                headers: { 'Accept': 'application/json', 'User-Agent': 'Prashikshak-Backend/1.0' }
            }),
            axios.get(`${SACHET_BASE_URL}/FetchAllAlertDetails`, {
                timeout: 10000,
                headers: { 'Accept': 'application/json', 'User-Agent': 'Prashikshak-Backend/1.0' }
            })
        ]);

        return res.status(200).json({
            success: true,
            data: {
                earthquakes: earthquakeRes.data,
                nowcast: nowcastRes.data,
                general: generalRes.data
            }
        });
    } catch (error: any) {
        console.error('Error fetching all alerts:', error.message);
        return res.status(error.response?.status || 500).json({
            success: false,
            message: 'Failed to fetch all alerts',
            error: error.message
        });
    }
};