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Code Block

language	java
theme	Midnight
title	src/main/java/com/example/demo/LinkService.java
linenumbers	true
collapse	true

package com.example.demo;

import org.apache.commons.lang3.RandomStringUtils;
import org.springframework.stereotype.Service;

import reactor.core.publisher.Mono;

@Service
public class LinkService {

    private final LinkRepository linkRepository;

    public LinkService(LinkRepository linkRepository) {
        this.linkRepository = linkRepository;
    }

    Mono<String> shortenLink(String link) {
        String randomKey = RandomStringUtils.randomAlphabetic(6);
        return linkRepository.save(new Link(link, randomKey))
                             .map(result -> result.getKey());
    }

    Mono<Link> getOriginalLink(String key) {
        return linkRepository.findByKey(key);
    }
}

Code Block

language	java
theme	Midnight
title	WebController
linenumbers	true

package com.example.demo;

import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

@Controller
@RequiredArgsConstructor
public class WebController {

    @GetMapping("/home")
    public String home(Model model) {
        return "home";
    }
}

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