package com.example.hangry.controller;

import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import java.util.Set;
import com.example.hangry.*;
import com.example.hangry.services.GroupService;
@RestController
@RequestMapping("/api/groups")
@CrossOrigin(origins = "*")
public class GroupController {

    private final GroupService groupService;

    public GroupController(GroupService groupService) {
        this.groupService = groupService;
    }

    // Neue Gruppe erstellen
    @PostMapping
    public ResponseEntity<Group> createGroup(@RequestParam String name, @RequestParam String description) {
        return ResponseEntity.ok(groupService.createGroup(name, description));
    }

    // Gruppe beitreten
    @PostMapping("/{groupId}/join/{userId}")
    public ResponseEntity<String> joinGroup(@PathVariable Long groupId, @PathVariable Long userId) {
        boolean joined = groupService.joinGroup(userId, groupId);
        return joined ? ResponseEntity.ok("Gruppe beigetreten") : ResponseEntity.badRequest().body("Bereits Mitglied");
    }

    // Gruppe verlassen
    @PostMapping("/{groupId}/leave/{userId}")
    public ResponseEntity<String> leaveGroup(@PathVariable Long groupId, @PathVariable Long userId) {
        boolean left = groupService.leaveGroup(userId, groupId);
        return left ? ResponseEntity.ok("Gruppe verlassen") : ResponseEntity.badRequest().body("Nicht in der Gruppe");
    }

    // Mitglieder einer Gruppe abrufen
    @GetMapping("/{groupId}/members")
    public ResponseEntity<Set<User>> getGroupMembers(@PathVariable Long groupId) {
        return ResponseEntity.ok(groupService.getGroupMembers(groupId));
    }
}