package graphql

import (
	"context"
	"fmt"

	"github.com/jackc/pgx/v5/pgxpool"
)

// Resolver handles GraphQL queries
type Resolver struct {
	db      *pgxpool.Pool
	chainID int
}

// NewResolver creates a new GraphQL resolver
func NewResolver(db *pgxpool.Pool, chainID int) *Resolver {
	return &Resolver{
		db:      db,
		chainID: chainID,
	}
}

// BlockResolver resolves Block queries
type BlockResolver struct {
	db      *pgxpool.Pool
	chainID int
	block   *Block
}

// Block represents a block in GraphQL
type Block struct {
	ChainID         int32
	Number          int32
	Hash            string
	ParentHash      string
	Timestamp       string
	Miner           string
	TransactionCount int32
	GasUsed         int64
	GasLimit        int64
}

// TransactionResolver resolves Transaction queries
type TransactionResolver struct {
	db      *pgxpool.Pool
	chainID int
	tx      *Transaction
}

// Transaction represents a transaction in GraphQL
type Transaction struct {
	ChainID    int32
	Hash       string
	BlockNumber int32
	From       string
	To         *string
	Value      string
	GasPrice   *int64
	GasUsed    *int64
	Status     *int32
}

// ResolveBlock resolves block query
func (r *Resolver) ResolveBlock(ctx context.Context, args struct {
	ChainID int32
	Number  *int32
}) (*BlockResolver, error) {
	// Implementation would fetch block from database
	return nil, fmt.Errorf("not implemented")
}

// ResolveTransaction resolves transaction query
func (r *Resolver) ResolveTransaction(ctx context.Context, args struct {
	ChainID int32
	Hash    string
}) (*TransactionResolver, error) {
	// Implementation would fetch transaction from database
	return nil, fmt.Errorf("not implemented")
}