package com.blog.web.controllers;

import com.blog.web.dto.ArticleDto;
import com.blog.web.models.Article;
import com.blog.web.models.UserEntity;
import com.blog.web.security.SecurityUtil;
import com.blog.web.services.ArticleService;
import com.blog.web.services.UserService;
import jakarta.validation.Valid;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@Controller
public class ArticleController {
    private ArticleService articleService;
    private UserService userService;

    public ArticleController(ArticleService articleService, UserService userService) {
        this.articleService = articleService;
        this.userService = userService;
    }

    @GetMapping("/articles")
    public String listArticles(Model model) {
        List<ArticleDto> articles = articleService.findAllArticles();
        UserEntity user = userService.getLoggedInUser();
        model.addAttribute("user", user);
        model.addAttribute("articles", articles);
        return "index";
    }

    @GetMapping("/articles/{articleId}")
    public String showArticle(@PathVariable("articleId") long articleId, Model model) {
        ArticleDto articleDto = articleService.findArticleById(articleId);
        model.addAttribute("article", articleDto);
        UserEntity user = userService.getLoggedInUser();
        model.addAttribute("user", user);
        return "articles/show";
    }

    @GetMapping("/articles/new")
    public String createArticleForm(Model model) {
        UserEntity user = userService.getLoggedInUser();
        model.addAttribute("user", user);
        final Article article = new Article();
        model.addAttribute("article", article);
        return "articles/new";
    }

    @PostMapping("/articles/new")
    public String saveArticle(@Valid @ModelAttribute("article") ArticleDto articleDto,
                              BindingResult result,
                              Model model)
    {
        // if un-logged in user tries to create an article
        // redirect them to login page
        UserEntity user = userService.getLoggedInUser();
        if(userService.getLoggedInUser().getId() == null) {
            return "redirect:/userlogin";
        }
        else if(result.hasErrors()) {
            model.addAttribute("article", articleDto);
            return "articles/new";
        }
        else {
            articleService.saveArticle(articleDto);
            return "redirect:/articles";
        }
    }


    @GetMapping("/articles/delete/{articleId}")
    public String deleteArticle(@PathVariable("articleId") Long articleId) {
        UserEntity user = userService.getLoggedInUser();
        ArticleDto article = articleService.findArticleById(articleId);
        UserEntity owner = article.getCreatedBy();
        if(owner.equals(user)) {
            articleService.delete(articleId);
        }
        return "redirect:/articles";
    }

    @GetMapping("/articles/edit/{articleId}")
    public String editArticleForm(@PathVariable("articleId") long articleId, Model model) {
        UserEntity user = userService.getLoggedInUser();
        model.addAttribute("user", user);
        ArticleDto articleDto = articleService.findArticleById(articleId);
        model.addAttribute("article", articleDto);
        return "articles/edit";
    }

    @PostMapping("/articles/edit/{articleId}")
    public String updateArticle(@PathVariable("articleId") Long articleId,
                                @Valid @ModelAttribute("article") ArticleDto article,
                                BindingResult result) {
        if(result.hasErrors()) {
            return "articles/edit";
        }
        article.setId(articleId);
        articleService.updateArticle(article);
        return "redirect:/articles";
    }

    @GetMapping("/articles/search")
    public String searchArticle(@RequestParam(value = "search") String search, Model model) {
        UserEntity user = userService.getLoggedInUser();
        model.addAttribute("user", user);
        List<ArticleDto> articles = articleService.searchArticles(search);
        model.addAttribute("articles", articles);
        return "index";
    }


    @GetMapping("/")
    public String getArticles() {
        return "redirect:/articles";
    }
}