package me.chanjar.weixin.cp.config.impl;

import me.chanjar.weixin.common.bean.WxAccessToken;
import me.chanjar.weixin.common.util.http.apache.ApacheHttpClientBuilder;
import me.chanjar.weixin.cp.config.WxCpConfigStorage;
import me.chanjar.weixin.cp.constant.WxCpApiPathConsts;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

import java.io.File;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * <pre>
 *    使用说明：本实现仅供参考，并不完整.
 *    比如为减少项目依赖，未加入redis分布式锁的实现，如有需要请自行实现。
 * </pre>
 *
 * @author gaigeshen
 */
public class WxCpRedisConfigImpl implements WxCpConfigStorage {
  private static final String ACCESS_TOKEN_KEY = "WX_CP_ACCESS_TOKEN";
  private static final String ACCESS_TOKEN_EXPIRES_TIME_KEY = "WX_CP_ACCESS_TOKEN_EXPIRES_TIME";
  private static final String JS_API_TICKET_KEY = "WX_CP_JS_API_TICKET";
  private static final String JS_API_TICKET_EXPIRES_TIME_KEY = "WX_CP_JS_API_TICKET_EXPIRES_TIME";
  private static final String AGENT_JSAPI_TICKET_KEY = "WX_CP_AGENT_%s_JSAPI_TICKET";
  private static final String AGENT_JSAPI_TICKET_EXPIRES_TIME_KEY = "WX_CP_AGENT_%s_JSAPI_TICKET_EXPIRES_TIME";

  private final JedisPool jedisPool;
  private volatile String corpId;
  private volatile String corpSecret;
  private volatile String token;
  private volatile String aesKey;
  private volatile Integer agentId;
  private volatile String oauth2redirectUri;
  private volatile String httpProxyHost;
  private volatile int httpProxyPort;
  private volatile String httpProxyUsername;
  private volatile String httpProxyPassword;
  private volatile File tmpDirFile;
  private volatile ApacheHttpClientBuilder apacheHttpClientBuilder;

  protected volatile String baseApiUrl;

  @Override
  public void setBaseApiUrl(String baseUrl) {
    this.baseApiUrl = baseUrl;
  }

  @Override
  public String getApiUrl(String path) {
    if (baseApiUrl == null) {
      baseApiUrl = WxCpApiPathConsts.DEFAULT_CP_BASE_URL;
    }
    return baseApiUrl + path;
  }

  public WxCpRedisConfigImpl(JedisPool jedisPool) {
    this.jedisPool = jedisPool;
  }

  public WxCpRedisConfigImpl(String host, int port) {
    jedisPool = new JedisPool(host, port);
  }

  public WxCpRedisConfigImpl(JedisPoolConfig poolConfig, String host, int port) {
    jedisPool = new JedisPool(poolConfig, host, port);
  }

  public WxCpRedisConfigImpl(JedisPoolConfig poolConfig, String host, int port, int timeout, String password) {
    jedisPool = new JedisPool(poolConfig, host, port, timeout, password);
  }

  public WxCpRedisConfigImpl(JedisPoolConfig poolConfig, String host, int port, int timeout, String password, int database) {
    jedisPool = new JedisPool(poolConfig, host, port, timeout, password, database);
  }

  /**
   * This method will be destroy jedis pool
   */
  public void destroy() {
    this.jedisPool.destroy();
  }

  @Override
  public String getAccessToken() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      return jedis.get(ACCESS_TOKEN_KEY);
    }
  }

  @Override
  public Lock getAccessTokenLock() {
    return new ReentrantLock();
  }

  @Override
  public boolean isAccessTokenExpired() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      String expiresTimeStr = jedis.get(ACCESS_TOKEN_EXPIRES_TIME_KEY);

      if (expiresTimeStr != null) {
        return System.currentTimeMillis() > Long.parseLong(expiresTimeStr);
      }

      return true;

    }
  }

  @Override
  public void expireAccessToken() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      jedis.set(ACCESS_TOKEN_EXPIRES_TIME_KEY, "0");
    }
  }

  @Override
  public synchronized void updateAccessToken(WxAccessToken accessToken) {
    this.updateAccessToken(accessToken.getAccessToken(), accessToken.getExpiresIn());
  }

  @Override
  public synchronized void updateAccessToken(String accessToken, int expiresInSeconds) {
    try (Jedis jedis = this.jedisPool.getResource()) {
      jedis.set(ACCESS_TOKEN_KEY, accessToken);

      jedis.set(ACCESS_TOKEN_EXPIRES_TIME_KEY,
        (System.currentTimeMillis() + (expiresInSeconds - 200) * 1000L) + "");
    }
  }

  @Override
  public String getJsapiTicket() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      return jedis.get(JS_API_TICKET_KEY);
    }
  }

  @Override
  public Lock getJsapiTicketLock() {
    return new ReentrantLock();
  }

  @Override
  public boolean isJsapiTicketExpired() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      String expiresTimeStr = jedis.get(JS_API_TICKET_EXPIRES_TIME_KEY);

      if (expiresTimeStr != null) {
        long expiresTime = Long.parseLong(expiresTimeStr);
        return System.currentTimeMillis() > expiresTime;
      }

      return true;
    }
  }

  @Override
  public void expireJsapiTicket() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      jedis.set(JS_API_TICKET_EXPIRES_TIME_KEY, "0");
    }
  }

  @Override
  public synchronized void updateJsapiTicket(String jsapiTicket, int expiresInSeconds) {
    try (Jedis jedis = this.jedisPool.getResource()) {
      jedis.set(JS_API_TICKET_KEY, jsapiTicket);
      jedis.set(JS_API_TICKET_EXPIRES_TIME_KEY,
        (System.currentTimeMillis() + (expiresInSeconds - 200) * 1000L + ""));
    }

  }

  @Override
  public String getAgentJsapiTicket() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      return jedis.get(String.format(AGENT_JSAPI_TICKET_KEY, agentId));
    }
  }

  @Override
  public Lock getAgentJsapiTicketLock() {
    return new ReentrantLock();
  }

  @Override
  public boolean isAgentJsapiTicketExpired() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      String expiresTimeStr = jedis.get(String.format(AGENT_JSAPI_TICKET_EXPIRES_TIME_KEY, agentId));

      if (expiresTimeStr != null) {
        return System.currentTimeMillis() > Long.parseLong(expiresTimeStr);
      }

      return true;
    }
  }

  @Override
  public void expireAgentJsapiTicket() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      jedis.set(String.format(AGENT_JSAPI_TICKET_EXPIRES_TIME_KEY, agentId), "0");
    }
  }

  @Override
  public void updateAgentJsapiTicket(String jsapiTicket, int expiresInSeconds) {
    try (Jedis jedis = this.jedisPool.getResource()) {
      jedis.set(String.format(AGENT_JSAPI_TICKET_KEY, agentId), jsapiTicket);
      jedis.set(String.format(AGENT_JSAPI_TICKET_EXPIRES_TIME_KEY, agentId),
        (System.currentTimeMillis() + (expiresInSeconds - 200) * 1000L + ""));
    }

  }

  @Override
  public String getCorpId() {
    return this.corpId;
  }

  public void setCorpId(String corpId) {
    this.corpId = corpId;
  }

  @Override
  public String getCorpSecret() {
    return this.corpSecret;
  }

  public void setCorpSecret(String corpSecret) {
    this.corpSecret = corpSecret;
  }

  @Override
  public Integer getAgentId() {
    return this.agentId;
  }

  public void setAgentId(Integer agentId) {
    this.agentId = agentId;
  }

  @Override
  public String getToken() {
    return this.token;
  }

  public void setToken(String token) {
    this.token = token;
  }

  @Override
  public String getAesKey() {
    return this.aesKey;
  }

  public void setAesKey(String aesKey) {
    this.aesKey = aesKey;
  }

  @Override
  public long getExpiresTime() {
    try (Jedis jedis = this.jedisPool.getResource()) {
      String expiresTimeStr = jedis.get(ACCESS_TOKEN_EXPIRES_TIME_KEY);

      if (expiresTimeStr != null) {
        return Long.parseLong(expiresTimeStr);
      }

      return 0L;

    }
  }

  @Override
  public String getOauth2redirectUri() {
    return this.oauth2redirectUri;
  }

  public void setOauth2redirectUri(String oauth2redirectUri) {
    this.oauth2redirectUri = oauth2redirectUri;
  }

  @Override
  public String getHttpProxyHost() {
    return this.httpProxyHost;
  }

  public void setHttpProxyHost(String httpProxyHost) {
    this.httpProxyHost = httpProxyHost;
  }

  @Override
  public int getHttpProxyPort() {
    return this.httpProxyPort;
  }

  public void setHttpProxyPort(int httpProxyPort) {
    this.httpProxyPort = httpProxyPort;
  }

  @Override
  public String getHttpProxyUsername() {
    return this.httpProxyUsername;
  }

  // ============================ Setters below

  public void setHttpProxyUsername(String httpProxyUsername) {
    this.httpProxyUsername = httpProxyUsername;
  }

  @Override
  public String getHttpProxyPassword() {
    return this.httpProxyPassword;
  }

  public void setHttpProxyPassword(String httpProxyPassword) {
    this.httpProxyPassword = httpProxyPassword;
  }

  @Override
  public File getTmpDirFile() {
    return this.tmpDirFile;
  }

  public void setTmpDirFile(File tmpDirFile) {
    this.tmpDirFile = tmpDirFile;
  }

  @Override
  public ApacheHttpClientBuilder getApacheHttpClientBuilder() {
    return this.apacheHttpClientBuilder;
  }

  @Override
  public boolean autoRefreshToken() {
    return true;
  }

  public void setApacheHttpClientBuilder(ApacheHttpClientBuilder apacheHttpClientBuilder) {
    this.apacheHttpClientBuilder = apacheHttpClientBuilder;
  }

}
