package com.gs.controller;

import com.baomidou.mybatisplus.core.metadata.IPage;
import com.gs.controller.util.R;
import com.gs.domain.Book;
import com.gs.service.IBookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.io.IOException;


@RestController
@RequestMapping("/books")
public class BookController {
    @Autowired
    private IBookService bookService;

    @GetMapping
    public R getAll(){
        return new R(true,bookService.list());
    }

    @PostMapping
    public R save(@RequestBody Book book) throws IOException {

        if(book.getName().equals("123")){
            throw new IOException();
        }

        boolean flag = bookService.save(book);

        return new R(flag,flag ? "添加成功^_^" : "添加失败-_-!");
    }

    @PutMapping
    public R update(@RequestBody Book book){
        return new R(bookService.modify(book));
    }

    @DeleteMapping("{id}")
    public R delete(@PathVariable Integer id){
        return new R(bookService.delete(id));
    }

    @GetMapping("{id}")
    public R getById(@PathVariable Integer id){
        return new R(true,bookService.getById(id));
    }

    @GetMapping("{currentPage}/{pageSize}")
    public R getPage(@PathVariable int currentPage,@PathVariable int pageSize,Book book){
        System.out.println("参数==>"+book);
        IPage<Book> page = bookService.getPage(currentPage, pageSize,book);
        //如果当前页码值大于总页码值，那么重新执行操作，使最大页码值为当前页码
        if (currentPage > page.getPages()){
            page = bookService.getPage((int)page.getPages(), pageSize,book);
        }
        return new R(true,page);
    }


}