package com.mossle.user.rs;

import java.io.InputStream;

import javax.annotation.Resource;

import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;

import com.mossle.api.tenant.TenantHolder;

import com.mossle.user.service.UserAvatarService;

import org.apache.commons.lang3.StringUtils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.springframework.stereotype.Component;

@Component
@Path("avatar")
public class AvatarResource {
    private static Logger logger = LoggerFactory
            .getLogger(AvatarResource.class);
    private UserAvatarService userAvatarService;
    private TenantHolder tenantHolder;

    @GET
    @Produces("image/png")
    public InputStream view(@QueryParam("id") String id,
            @QueryParam("width") @DefaultValue("16") int width)
            throws Exception {
        if (StringUtils.isBlank(id)) {
            logger.info("id cannot be blank");

            return null;
        }

        if (id.indexOf("_") != -1) {
            String text = id;
            logger.info("process : {}", text);

            int index = text.indexOf("_");
            int nextIndex = text.indexOf("x");
            id = text.substring(0, index);
            width = Integer.parseInt(text.substring(index + 1, nextIndex));

            logger.info("id : {}, width : {}", id, width);
        }

        logger.debug("width : {}", width);

        String tenantId = tenantHolder.getTenantId();

        Long longId = null;

        try {
            longId = Long.parseLong(id);
        } catch (Exception ex) {
            logger.error(ex.getMessage(), ex);
        }

        return userAvatarService.viewAvatarById(longId, width, tenantId)
                .getInputStream();
    }

    @GET
    @Path("username")
    @Produces(MediaType.APPLICATION_OCTET_STREAM)
    public InputStream username(@QueryParam("username") String username,
            @QueryParam("width") @DefaultValue("16") int width)
            throws Exception {
        logger.debug("width : {}", width);

        String tenantId = tenantHolder.getTenantId();

        return userAvatarService
                .viewAvatarByUsername(username, width, tenantId)
                .getInputStream();
    }

    // ~ ======================================================================
    @Resource
    public void setUserAvatarService(UserAvatarService userAvatarService) {
        this.userAvatarService = userAvatarService;
    }

    @Resource
    public void setTenantHolder(TenantHolder tenantHolder) {
        this.tenantHolder = tenantHolder;
    }
}