package com.juick.service;

import com.juick.service.cloudflare.FilesPayload;
import com.juick.User;
import com.juick.server.component.UserUpdatedEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.ApplicationListener;
import org.springframework.http.*;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.util.UriComponents;
import org.springframework.web.util.UriComponentsBuilder;

import java.util.Arrays;
import java.util.Collections;

public class CloudflareCache implements ApplicationListener<UserUpdatedEvent> {
    private static final Logger logger = LoggerFactory.getLogger(CloudflareCache.class);
    @Value("${cloudflare_auth_email}")
    private String authEmail;
    @Value("${cloudflare_api_key}")
    private String apiKey;
    @Value("${cloudflare_zone_id}")
    private String zoneId;
    private final static String baseUri = "https://api.cloudflare.com/client/v4";
    @Override
    public void onApplicationEvent(UserUpdatedEvent event) {
        User user = event.getUser();
        logger.debug("Purging Cloudflare cache for {} avatar", user.getName());
        UriComponents uriComponents = UriComponentsBuilder.fromUriString("{baseUri}/zones/{zoneId}/purge_cache")
                .buildAndExpand(baseUri, zoneId);
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.add("X-Auth-Email", authEmail);
        httpHeaders.add("X-Auth-Key", apiKey);
        httpHeaders.setContentType(MediaType.APPLICATION_JSON);
        FilesPayload payload = new FilesPayload();
        payload.setFiles(Arrays.asList(
                String.format("http://i.juick.com/a/%d.png", user.getUid()),
                String.format("http://i.juick.com/as/%d.png", user.getUid()),
                String.format("http://i.juick.com/a/%d.jpg", user.getUid()),
                String.format("http://i.juick.com/as/%d.jpg", user.getUid()),
                String.format("https://i.juick.com/a/%d.png", user.getUid()),
                String.format("https://i.juick.com/as/%d.png", user.getUid()),
                String.format("https://i.juick.com/a/%d.jpg", user.getUid()),
                String.format("https://i.juick.com/as/%d.jpg", user.getUid())
        ));
        RestTemplate api = new RestTemplate();
        api.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
        ResponseEntity<String> response = api.exchange(uriComponents.toUri(),
                HttpMethod.DELETE,
                new HttpEntity<>(payload, httpHeaders), String.class);
        logger.info("Cloudflare response: {}", response.getBody());
    }
}