package com.billpaymentservice.bbps.controller;

import java.util.HashMap;
import java.util.Map;

import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.billpaymentservice.bbps.dto.ResponseModel;
import com.billpaymentservice.bbps.dto.request.PaymentStartUserRequest;
import com.billpaymentservice.bbps.dto.request.CallbackRequest;
import com.billpaymentservice.bbps.service.PaymentStartService;

@RestController
@RequestMapping("/payment")
public class PaymentStartController {
	private final PaymentStartService paymentStartService;

	public PaymentStartController(PaymentStartService paymentStartService) {
		this.paymentStartService = paymentStartService;
	}
	
	@PostMapping(value = "/startWebPayment", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<ResponseModel> startWebPayment(@Validated @RequestBody PaymentStartUserRequest paymentStartUserRequest) {
      
        ResponseModel response = paymentStartService.startWebPayment(paymentStartUserRequest);
        return ResponseEntity.ok(response);
    }

	@PostMapping(value = "/callback/startPayment", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
	public ResponseEntity<Map<String, String>> handleCallback(@RequestBody CallbackRequest callbackRequest) {
		ResponseModel resp = paymentStartService.handleStartCallback(callbackRequest);
		Map<String, String> result = new HashMap<>();
		// Use the status field from ResponseModel as merchant status code string
		result.put("status", resp.getStatus());
		return ResponseEntity.ok(result);
	}
	
	@PostMapping(value = "/startIntentPayment", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<ResponseModel> startIntentPayment(@Validated @RequestBody PaymentStartUserRequest paymentStartUserRequest) {
        if (this.paymentStartService == null) {
            // Defensive: if bean not injected, return failure
            return ResponseEntity.badRequest().body(new ResponseModel("PaymentStartService not available", "FAILED", 400, null));
        }
        ResponseModel response = paymentStartService.startIntentPayment(paymentStartUserRequest);
        return ResponseEntity.ok(response);
    }
}