package com.paymentlink.controller.api;

import com.paymentlink.service.TaxService;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.*;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/api/countries")
public class CountryApiController {

    private final TaxService taxService;

    public CountryApiController(TaxService taxService) {
        this.taxService = taxService;
    }

    /**
     * GET /api/countries - Get supported countries
     */
    @GetMapping
    public ResponseEntity<Map<String, Object>> getCountries() {
        try {
            Map<String, String> countriesMap = taxService.getSupportedCountries();

            // Convert map to array of objects with code and name
            List<Map<String, String>> countries = countriesMap.entrySet().stream()
                .map(entry -> {
                    Map<String, String> country = new HashMap<>();
                    country.put("code", entry.getKey());
                    country.put("name", entry.getValue());
                    return country;
                })
                .sorted(Comparator.comparing(c -> c.get("name"))) // Sort by name
                .collect(Collectors.toList());

            Map<String, Object> response = new HashMap<>();
            response.put("success", true);
            response.put("countries", countries);
            return ResponseEntity.ok(response);

        } catch (Exception e) {
            Map<String, Object> error = new HashMap<>();
            error.put("success", false);
            error.put("error", e.getMessage());
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
        }
    }
}