package xin.merlin.myblog_server.controller;


import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import xin.merlin.myblog_server.entity.Article;
import xin.merlin.myblog_server.entity.Comment;
import xin.merlin.myblog_server.entity.News;
import xin.merlin.myblog_server.entity.User;
import xin.merlin.myblog_server.service.impl.ArticleServiceImpl;
import xin.merlin.myblog_server.service.impl.CommentServiceImpl;
import xin.merlin.myblog_server.service.impl.NewsServiceImpl;
import xin.merlin.myblog_server.utils.JwtUtil;
import xin.merlin.myblog_server.utils.RequestBack;
import xin.merlin.myblog_server.utils.enums.ResultCode;

import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.UUID;

@RestController
@RequestMapping("/admin")
public class AdminController {


    @Autowired
    private JwtUtil jwtUtil;

    @Autowired
    private NewsServiceImpl newsService;

    @Autowired
    private ArticleServiceImpl articleService;

    @Autowired
    private CommentServiceImpl commentService;

    @Value("${upload.dir}")
    private String uploadDir;

    //编辑，新增，删除新闻
    @PostMapping("/update/news")
    RequestBack editNews(@RequestBody News news, @RequestHeader("Authorization")String token) {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        newsService.updateById(news);
        return RequestBack.success(ResultCode.SUCCESS);
    }

    @PostMapping("/add/news")
    RequestBack addNews(@RequestBody News news, @RequestHeader("Authorization")String token) {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        newsService.save(news);
        return RequestBack.success(ResultCode.SUCCESS);
    }

    @PostMapping("/delete/news")
    RequestBack deleteNews(@RequestBody News news,@RequestHeader("Authorization")String token) {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        newsService.removeById(news.getId());
        return RequestBack.success(ResultCode.SUCCESS);
    }

    //编辑，新增，删除文章
    @PostMapping("/update/article")
    RequestBack editArticle(@RequestBody Article article, @RequestHeader("Authorization")String token) {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        articleService.updateById(article);
        return RequestBack.success(ResultCode.SUCCESS);
    }

    @PostMapping("/add/article")
    RequestBack addArticle(@RequestBody Article article, @RequestHeader("Authorization")String token) {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        articleService.save(article);
        return RequestBack.success(ResultCode.SUCCESS);
    }

    @PostMapping("/delete/article")
    RequestBack deleteArticle(@RequestBody Article article, @RequestHeader("Authorization")String token) {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        articleService.removeById(article.getId());
        return RequestBack.success(ResultCode.SUCCESS);

    }

    //获取、删除评论
    @GetMapping("/get/comments")
    RequestBack getComments(@RequestParam Integer current,@RequestParam Integer size,@RequestHeader("Authorization")String token) {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        Page<Comment> page = new Page<>(current,size);

        return RequestBack.success(ResultCode.SUCCESS,commentService.page(page));
    }

    @PostMapping("/delete/comment")
    RequestBack addArticle(@RequestBody Comment comment, @RequestHeader("Authorization")String token) {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        commentService.removeById(comment.getId());
        return RequestBack.success(ResultCode.SUCCESS);
    }

    //获取，删除用户
    @PostMapping("/get/users")
    RequestBack getUsers(@RequestBody User user , @RequestHeader("Authorization")String token) {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        commentService.removeById(user.getId());
        return RequestBack.success(ResultCode.SUCCESS);
    }

    //上传照片
    @PostMapping("/upload/img")
    RequestBack uploadImg(@RequestHeader("Authorization")String token, @RequestParam("image") MultipartFile file) throws IOException {
        if(!jwtUtil.getUAccount(token.substring(7)).equals("admin")) return RequestBack.fail(ResultCode.USER_NOT_FOUND);
        if (file == null || file.isEmpty()) {
            return RequestBack.fail(ResultCode.NOT_FOUND);
        }
        String original = file.getOriginalFilename();
        String ext = "";
        if (original != null && original.contains(".")) {
            ext = original.substring(original.lastIndexOf('.'));
        }

        String filename = UUID.randomUUID().toString() + ext;

        Path dirPath = Paths.get(uploadDir);
        Files.createDirectories(dirPath);

        Path target = dirPath.resolve(filename);
        try (InputStream in = file.getInputStream()) {
            Files.copy(in, target, StandardCopyOption.REPLACE_EXISTING);
        }

        return RequestBack.success(ResultCode.SUCCESS, "https://blog.merlin.xin/app/uploads/"+filename);
    }
}