package com.billpaymentservice.bbps.controller;

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.BillPaymentRequest;
import com.billpaymentservice.bbps.dto.request.TransactionStatusRequest;
import com.billpaymentservice.bbps.dto.request.TrasactionStatusByClientReqIdRequest;
import com.billpaymentservice.bbps.dto.response.TransactionStatusResponse;
import com.billpaymentservice.bbps.service.PaymentService;
import com.billpaymentservice.bbps.service.PaymentStartService;
import com.billpaymentservice.bbps.dto.request.PaymentStartUserRequest;

@RestController
@RequestMapping("/agent/payment")
public class PaymentController {

	/**
	 * Fetches bill details from external BBPS service
	 */

	private final PaymentService paymentService;
	private final PaymentStartService paymentStartService;

	// New constructor used by Spring to inject both services
	public PaymentController(PaymentService paymentService, PaymentStartService paymentStartService) {
		this.paymentService = paymentService;
		this.paymentStartService = paymentStartService;
	}

	@PostMapping(value = "/intiatePayment", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
	public ResponseEntity<ResponseModel> requestBillFetch(
			@Validated @RequestBody BillPaymentRequest billPaymentRequest) {

		ResponseModel response = paymentService.initiatePayment(billPaymentRequest);
		return ResponseEntity.ok(response);
	}

	@PostMapping(value = "/checkTransactionStatus", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
	public ResponseEntity<ResponseModel> checkTransactionStatus(
			@Validated @RequestBody TransactionStatusRequest transactionStatusRequest) {

		ResponseModel response = paymentService.checkTrasactionStatus(transactionStatusRequest);
		return ResponseEntity.ok(response);
	}

	@PostMapping(value = "/checkTransactionStatusByClientReqId", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
	public ResponseEntity<ResponseModel> checkTransactionStatusByClientReqId(
			@Validated @RequestBody TrasactionStatusByClientReqIdRequest transactionStatusRequest) {

		ResponseModel response = paymentService.checkTrasactionStatusByClientReqId(transactionStatusRequest);
		return ResponseEntity.ok(response);
	}
	
	
	@PostMapping(value="/callback/paymentIntiate", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<ResponseModel> handleBillValidateCallback(@RequestBody TransactionStatusResponse transactionStatusResponse) {
		ResponseModel genralResp=paymentService.handlePaymentIntiateCallback(transactionStatusResponse);
		// Return a response indicating successful receipt
		return ResponseEntity.ok(genralResp);
	}
	
	@PostMapping(value = "/startPayment", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<ResponseModel> startPayment(@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.startPayment(paymentStartUserRequest);
        return ResponseEntity.ok(response);
    }
	
	
}