package ru.bvn13.voidforum.controllers.admin;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.Errors;
import org.springframework.web.bind.annotation.*;
import ru.bvn13.voidforum.error.NotFoundException;
import ru.bvn13.voidforum.forms.CommentDeletionForm;
import ru.bvn13.voidforum.forms.CommentForm;
import ru.bvn13.voidforum.models.Comment;
import ru.bvn13.voidforum.models.Post;
import ru.bvn13.voidforum.services.CommentService;
import ru.bvn13.voidforum.services.PostService;
import ru.bvn13.voidforum.utils.DTOUtil;

import javax.validation.Valid;

import java.nio.file.AccessDeniedException;

import static org.springframework.web.bind.annotation.RequestMethod.DELETE;
import static org.springframework.web.bind.annotation.RequestMethod.POST;

/**
 * Created by bvn13 on 11.12.2017.
 */
@Controller("adminCommentController")
@RequestMapping("/admin/comments")
public class CommentController {

    @Autowired
    private CommentService commentService;

    @Autowired
    private PostService postService;


    @GetMapping(value = "/{commentId:[\\d]+}", produces= MediaType.APPLICATION_JSON_VALUE)
    public @ResponseBody CommentForm getComment(@PathVariable Long commentId) {
        Comment comment = commentService.getCommentById(commentId);
        if (comment == null) {
            throw new NotFoundException("Comment not found");
        }
        CommentForm commentForm = new CommentForm();
        DTOUtil.mapTo(comment, commentForm);
        return commentForm;
    }

    @RequestMapping(value = "/{commentId:[\\d]+}/delete", method = {POST})
    public String deleteComment(@PathVariable Long commentId, @Valid CommentDeletionForm form, Errors errors, Model model) throws Exception {
        if (errors.hasErrors()) {
            throw new Exception("Wrong request");
        }
        Comment comment = commentService.getCommentById(commentId);

        if (!comment.getPost().getId().equals(form.getPostId())) {
            throw new AccessDeniedException("Comment "+commentId+" does not belong to post "+form.getPostId());
        }

        commentService.deleteComment(commentId);
        return "redirect:/posts/"+form.getPostId();
    }

}