// Copyright 2023 The XDC Network Authors
// This file is part of the XDC Network library.
//
// The XDC Network library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Package bind contains XDPoS-specific contract bindings.
package bind

import (
	"context"
	"math/big"

	"github.com/ethereum/go-ethereum/common"
)

// XDCValidatorContract provides methods for interacting with the validator contract
type XDCValidatorContract struct {
	backend ContractBackend
	address common.Address
}

// ValidatorContractAddress is the address of the validator contract
var ValidatorContractAddress = common.HexToAddress("0x0000000000000000000000000000000000000088")

// NewXDCValidatorContract creates a new validator contract instance
func NewXDCValidatorContract(backend ContractBackend) *XDCValidatorContract {
	return &XDCValidatorContract{
		backend: backend,
		address: ValidatorContractAddress,
	}
}

// GetCandidates returns the list of candidates
func (c *XDCValidatorContract) GetCandidates(ctx context.Context) ([]common.Address, error) {
	// This would call the getCandidates method on the validator contract
	// Placeholder implementation
	return nil, nil
}

// GetCandidateCap returns the stake of a candidate
func (c *XDCValidatorContract) GetCandidateCap(ctx context.Context, candidate common.Address) (*big.Int, error) {
	// This would call the getCandidateCap method
	return big.NewInt(0), nil
}

// GetCandidateOwner returns the owner of a candidate
func (c *XDCValidatorContract) GetCandidateOwner(ctx context.Context, candidate common.Address) (common.Address, error) {
	// This would call the getCandidateOwner method
	return common.Address{}, nil
}

// GetVoterCap returns the stake of a voter for a candidate
func (c *XDCValidatorContract) GetVoterCap(ctx context.Context, candidate, voter common.Address) (*big.Int, error) {
	// This would call the getVoterCap method
	return big.NewInt(0), nil
}

// GetVoters returns the list of voters for a candidate
func (c *XDCValidatorContract) GetVoters(ctx context.Context, candidate common.Address) ([]common.Address, error) {
	// This would call the getVoters method
	return nil, nil
}

// IsCandidate checks if an address is a candidate
func (c *XDCValidatorContract) IsCandidate(ctx context.Context, addr common.Address) (bool, error) {
	// This would call the isCandidate method
	return false, nil
}

// GetWithdrawBlockNumber returns the withdraw block number for an address
func (c *XDCValidatorContract) GetWithdrawBlockNumber(ctx context.Context, addr common.Address) (*big.Int, error) {
	return big.NewInt(0), nil
}

// XDCBlockSignerContract provides methods for interacting with the block signer contract
type XDCBlockSignerContract struct {
	backend ContractBackend
	address common.Address
}

// BlockSignerContractAddress is the address of the block signer contract
var BlockSignerContractAddress = common.HexToAddress("0x0000000000000000000000000000000000000089")

// NewXDCBlockSignerContract creates a new block signer contract instance
func NewXDCBlockSignerContract(backend ContractBackend) *XDCBlockSignerContract {
	return &XDCBlockSignerContract{
		backend: backend,
		address: BlockSignerContractAddress,
	}
}

// GetSigners returns the signers for a block number
func (c *XDCBlockSignerContract) GetSigners(ctx context.Context, blockNumber *big.Int) ([]common.Address, error) {
	// This would call the getSigners method
	return nil, nil
}

// XDCRandomizeContract provides methods for the randomize contract
type XDCRandomizeContract struct {
	backend ContractBackend
	address common.Address
}

// RandomizeContractAddress is the address of the randomize contract
var RandomizeContractAddress = common.HexToAddress("0x0000000000000000000000000000000000000090")

// NewXDCRandomizeContract creates a new randomize contract instance
func NewXDCRandomizeContract(backend ContractBackend) *XDCRandomizeContract {
	return &XDCRandomizeContract{
		backend: backend,
		address: RandomizeContractAddress,
	}
}

// GetSecret returns the secret for a validator
func (c *XDCRandomizeContract) GetSecret(ctx context.Context, addr common.Address) ([]byte, error) {
	return nil, nil
}

// GetOpening returns the opening for a validator
func (c *XDCRandomizeContract) GetOpening(ctx context.Context, addr common.Address) ([]byte, error) {
	return nil, nil
}

// XDCMasternodeStatus represents the status of a masternode
type XDCMasternodeStatus struct {
	IsCandidate  bool
	IsMasternode bool
	Stake        *big.Int
	Owner        common.Address
	VoterCount   int
}

// GetMasternodeStatus returns the full status of a masternode
func GetMasternodeStatus(ctx context.Context, backend ContractBackend, addr common.Address) (*XDCMasternodeStatus, error) {
	validator := NewXDCValidatorContract(backend)
	
	isCandidate, _ := validator.IsCandidate(ctx, addr)
	stake, _ := validator.GetCandidateCap(ctx, addr)
	owner, _ := validator.GetCandidateOwner(ctx, addr)
	voters, _ := validator.GetVoters(ctx, addr)
	
	return &XDCMasternodeStatus{
		IsCandidate:  isCandidate,
		IsMasternode: false, // Would need to check against current masternode list
		Stake:        stake,
		Owner:        owner,
		VoterCount:   len(voters),
	}, nil
}