package com.mfsys.uco.controller;

import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.Document;
import com.mfsys.uco.constants.UCOURI;
import com.mfsys.uco.model.AccountDetail;
import com.mfsys.uco.model.CustomerProfile;
import com.mfsys.uco.request.*;
import com.mfsys.uco.response.*;
import com.mfsys.uco.service.*;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;


import java.io.ByteArrayOutputStream;
import java.util.ArrayList;
import java.util.Base64;
import java.util.List;

@RestController
@RequestMapping
public class UserController {

    private final UcoAccountService ucoAccountService;
    private final CustomerProfileService customerProfileService;
    private final TransactionPinService transactionPinService;
    private final CustomerAccountActivityService customerAccountActivityService;
    private final NotificationService notificationService;

    public UserController(
            UcoAccountService ucoAccountService,
            CustomerProfileService customerProfileService,
            TransactionPinService transactionPinService,
            CustomerAccountActivityService customerAccountActivityService,
            NotificationService notificationService) {
        this.ucoAccountService = ucoAccountService;
        this.customerProfileService = customerProfileService;
        this.transactionPinService = transactionPinService;
        this.customerAccountActivityService = customerAccountActivityService;
        this.notificationService = notificationService;
    }

    @PostMapping(UCOURI.ONBOARD_CUSTOMER)
    public ResponseEntity<HttpStatus> customerOnBoarding(@RequestBody SignupStep3Request signupStep3Request) {
        ucoAccountService.onBoardCustomer(signupStep3Request);
        return ResponseEntity.ok(HttpStatus.OK);
    }

    @PostMapping(UCOURI.VIEW_BALANCE)
    public ViewBalanceResponse viewBalance(@RequestBody ViewBalanceRequest viewBalanceRequest) {
        ViewBalanceResponse viewBalanceResponse = new ViewBalanceResponse();
        viewBalanceResponse.setMbmBkmsbalance(ucoAccountService.fetchAccountBalance(viewBalanceRequest.getPorOrgacode(), viewBalanceRequest.getMbmBkmsNumber()));
        return viewBalanceResponse;
    }

    @GetMapping(UCOURI.FETCH_LOGIIN_DATA)
    public CustomerProfile fetchlogindata(@RequestParam String porOrgacode, @RequestParam String email) {
        return customerProfileService.fetchCustcodeBasedOnEmail(porOrgacode, email);
    }

    @GetMapping(UCOURI.FETCH_DEPOSITACCOUNTS)
    public List<AccountDetail> getDepositAccounts(
            @RequestParam String porOrgacode,
            @RequestParam String cmpCustcode,
            @RequestParam String pctCstycode) {
        return ucoAccountService.fetchdepositAccountFromCiihive(porOrgacode, cmpCustcode);
    }

    @GetMapping(UCOURI.FETCH_ACCOUNT_STATEMENT)
    public List<DepositAccountTransactionResponse> getAccountStatement(
            @RequestParam String porOrgacode,
            @RequestParam String mbmBkmsnumber,
            @RequestParam String sgtGntrvaluedatefrom,
            @RequestParam String sgtGntrvaluedateto
    ) {

        List<DepositAccountTransactionResponse> transactions = new ArrayList<>();
        DepositAccountTransactionResponse transaction = new DepositAccountTransactionResponse();
        transaction.setTranID("12345");
        transaction.setSgtGntrCreatedAt("2024-03-17");
        transaction.setSgtGntrNarration("Sample Transaction");
        transaction.setSgtGntrvaluedate("2024-03-17");
        transaction.setDeposit("100.00");
        transaction.setWithdrawal("0.00");
        transaction.setStatus("approved");
        transaction.setSgtGntramt("1000.00");
        transactions.add(transaction);
        return transactions;
    }

    @GetMapping(UCOURI.FETCH_ACCOUNT_INQUIRY)
    public List<AccountInquiryResponse> getAccountInquiry(
            @RequestParam String acntTypeCode,
            @RequestParam String acntTypeValue,
            @RequestParam String porOrgacode,
            @RequestParam String channelCode) {
        return ucoAccountService.fetchAccountTitile(porOrgacode, acntTypeCode, acntTypeValue);
    }

    @PostMapping(UCOURI.GENERATE_TRANSACTIONS_REPORT)
    public String generateReport(@RequestBody TransactionHistoryRequest request) {
        try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
            PdfWriter writer = new PdfWriter(baos);
            PdfDocument pdf = new PdfDocument(writer);
            Document document = new Document(pdf);
            document.add(new Paragraph("Account Transaction History Report"));
            document.add(new Paragraph("Organization Code: " + request.getPorOrgacode()));
            document.add(new Paragraph("Account Number: " + request.getMbmBkmsnumber()));
            document.add(new Paragraph("From: " + request.getSgtGntrvaluedatefrom() + " To: " + request.getSgtGntrvaluedateto()));
            document.close();
            return Base64.getEncoder().encodeToString(baos.toByteArray());
        } catch (Exception e) {
            return "Error generating report";
        }
    }

    @PostMapping(UCOURI.CREATE_TRAN_PIN)
    public ResponseEntity<HttpStatus> createTransactionPin(@RequestBody CreateTransactionPinRequest request) {
        transactionPinService.createTransactionPin(request);
        return ResponseEntity.ok(HttpStatus.OK);
    }

    @PostMapping(UCOURI.VERIFY_TRAN_PIN)
    public ResponseEntity<?> verifyPin(@RequestBody VerifyPinRequest request) {
        transactionPinService.verifyOTPAndSavePin(request);
        return ResponseEntity.ok(HttpStatus.OK);
    }

    @PutMapping(UCOURI.CHANGE_TRAN_PIN)
    public ResponseEntity<String> updateTransactionPin(@RequestBody ChangeTransactionPinRequest request) {
        transactionPinService.updateTransactionPin(request);
        return ResponseEntity.ok("OTP sent");
    }

    @GetMapping(UCOURI.FETCH_EXCHANGE_RATE)
    public Object fetchExchangeRate(@RequestParam String porOrgacode) {
        return ucoAccountService.fetchExchangeRate(porOrgacode);
    }

    @GetMapping(UCOURI.ACCOUNT_ACTIVITY)
    public ResponseEntity<List<CustomerAccountActivityResponse>> getCustomerAccountActivity(
            @PathVariable String porOrgacode,
            @PathVariable String cmpCustcode,
            @PathVariable String fdate,
            @PathVariable String tdate) {
        return new ResponseEntity<>(customerAccountActivityService.getCustomerAccountActivity(porOrgacode, cmpCustcode, fdate, tdate), HttpStatus.OK);
    }

    @PostMapping(UCOURI.RESEND_OTP)
    @ResponseStatus(HttpStatus.OK)
    public ResponseEntity<String> sendSignUpOtp(@RequestBody OTPRequest otpRequest) {
        notificationService.sendOtp(otpRequest);
        return ResponseEntity.ok("OTP sent");
    }

    @PostMapping(UCOURI.ADD_UCO_CUSTOMER_ACCOUNT)
    public ResponseEntity<HttpStatus> addUcoCustomerAccount(@RequestBody AddAccountRequest addAccountRequest) {
        ucoAccountService.addUcoAccount(addAccountRequest);
        return ResponseEntity.ok(HttpStatus.OK);
    }

    @PostMapping(UCOURI.UPDATE_CUSTOMER_PROFILE)
    public ResponseEntity<HttpStatus> updateCustomerProfile(@RequestBody UpdateProfileRequest updateProfileRequest) {
        customerProfileService.updateCustomerProfile(updateProfileRequest);
        return ResponseEntity.ok(HttpStatus.OK);
    }

    @PostMapping(UCOURI.ADD_BENEFICIARY)
    public ResponseEntity<HttpStatus> updateCustomerProfile(@RequestBody BeneficiaryRequest beneficiaryRequest) {
        customerProfileService.addBeneficiary(beneficiaryRequest);
        return ResponseEntity.ok(HttpStatus.OK);
    }

    @GetMapping(UCOURI.GET_BENEFICIARY)
    public List<BeneficiaryResponse> updateCustomerProfile(@RequestParam String porOrgacode, @RequestParam String email) {
        return customerProfileService.fetchBeneficiaryBasedOnEmail(porOrgacode,email);
    }

    @DeleteMapping(UCOURI.DELETE_BENEFICIARY)
    public ResponseEntity<Void> deleteBeneficiary(
            @RequestParam String mbmBkmsnumberRef,
            @RequestParam String porOrgacode,
            @RequestParam String email) {
        customerProfileService.deleteBeneficiary(porOrgacode,email,mbmBkmsnumberRef);
        return ResponseEntity.noContent().build();
    }
}