package com.xuqm.im.service;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

@Component
public class ImPushBridgeClient {

    private static final Logger log = LoggerFactory.getLogger(ImPushBridgeClient.class);

    private final HttpClient httpClient = HttpClient.newHttpClient();
    private final ObjectMapper objectMapper;

    @Value("${im.push-service-url:http://127.0.0.1:8083}")
    private String pushServiceUrl;

    @Value("${im.internal-token:xuqm-internal-token}")
    private String internalToken;

    public ImPushBridgeClient(ObjectMapper objectMapper) {
        this.objectMapper = objectMapper;
    }

    public void notifyUsers(String appId, List<String> userIds, String title, String body, String payload) {
        if (userIds == null || userIds.isEmpty()) {
            return;
        }
        try {
            Map<String, Object> bodyMap = new LinkedHashMap<>();
            bodyMap.put("appId", appId);
            bodyMap.put("userIds", userIds);
            bodyMap.put("title", title);
            bodyMap.put("body", body);
            bodyMap.put("payload", payload);
            String json = objectMapper.writeValueAsString(bodyMap);
            HttpRequest request = HttpRequest.newBuilder()
                    .uri(URI.create(pushServiceUrl + "/api/push/internal/notify"))
                    .header("Content-Type", "application/json")
                    .header("X-Internal-Token", internalToken)
                    .POST(HttpRequest.BodyPublishers.ofString(json))
                    .build();
            httpClient.send(request, HttpResponse.BodyHandlers.ofString());
        } catch (Exception e) {
            log.warn("Failed to notify push-service for appId={}, userIds={}: {}", appId, userIds, e.getMessage());
        }
    }
}