Add full monorepo: virtual-banker, backend, frontend, docs, scripts, deployment
Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
defiQUG
236
backend/api/rest/transactions.go
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236
backend/api/rest/transactions.go
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@@ -0,0 +1,236 @@
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package rest
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import (
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"context"
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"database/sql"
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"encoding/json"
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"fmt"
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"net/http"
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"strconv"
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"time"
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)
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// handleListTransactions handles GET /api/v1/transactions
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func (s *Server) handleListTransactions(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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// Validate pagination
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page, pageSize, err := validatePagination(
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r.URL.Query().Get("page"),
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r.URL.Query().Get("page_size"),
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)
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if err != nil {
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writeValidationError(w, err)
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return
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}
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offset := (page - 1) * pageSize
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query := `
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SELECT t.chain_id, t.hash, t.block_number, t.transaction_index, t.from_address, t.to_address,
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t.value, t.gas_price, t.gas_used, t.status, t.created_at, t.timestamp_iso
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FROM transactions t
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WHERE t.chain_id = $1
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`
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args := []interface{}{s.chainID}
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argIndex := 2
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// Add filters
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if blockNumber := r.URL.Query().Get("block_number"); blockNumber != "" {
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if bn, err := strconv.ParseInt(blockNumber, 10, 64); err == nil {
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query += fmt.Sprintf(" AND block_number = $%d", argIndex)
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args = append(args, bn)
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argIndex++
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}
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}
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if fromAddress := r.URL.Query().Get("from_address"); fromAddress != "" {
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query += fmt.Sprintf(" AND from_address = $%d", argIndex)
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args = append(args, fromAddress)
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argIndex++
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}
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if toAddress := r.URL.Query().Get("to_address"); toAddress != "" {
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query += fmt.Sprintf(" AND to_address = $%d", argIndex)
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args = append(args, toAddress)
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argIndex++
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}
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query += " ORDER BY block_number DESC, transaction_index DESC"
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query += fmt.Sprintf(" LIMIT $%d OFFSET $%d", argIndex, argIndex+1)
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args = append(args, pageSize, offset)
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// Add query timeout
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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rows, err := s.db.Query(ctx, query, args...)
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if err != nil {
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http.Error(w, fmt.Sprintf("Database error: %v", err), http.StatusInternalServerError)
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return
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}
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defer rows.Close()
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transactions := []map[string]interface{}{}
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for rows.Next() {
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var chainID, blockNumber, transactionIndex int
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var hash, fromAddress string
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var toAddress sql.NullString
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var value string
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var gasPrice, gasUsed sql.NullInt64
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var status sql.NullInt64
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var createdAt time.Time
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var timestampISO sql.NullString
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if err := rows.Scan(&chainID, &hash, &blockNumber, &transactionIndex, &fromAddress, &toAddress,
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&value, &gasPrice, &gasUsed, &status, &createdAt, ×tampISO); err != nil {
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continue
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}
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tx := map[string]interface{}{
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"chain_id": chainID,
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"hash": hash,
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"block_number": blockNumber,
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"transaction_index": transactionIndex,
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"from_address": fromAddress,
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"value": value,
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"created_at": createdAt,
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}
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if timestampISO.Valid {
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tx["timestamp_iso"] = timestampISO.String
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}
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if toAddress.Valid {
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tx["to_address"] = toAddress.String
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}
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if gasPrice.Valid {
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tx["gas_price"] = gasPrice.Int64
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}
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if gasUsed.Valid {
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tx["gas_used"] = gasUsed.Int64
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}
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if status.Valid {
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tx["status"] = status.Int64
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}
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transactions = append(transactions, tx)
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}
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response := map[string]interface{}{
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"data": transactions,
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"meta": map[string]interface{}{
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"pagination": map[string]interface{}{
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"page": page,
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"page_size": pageSize,
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},
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},
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(response)
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}
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// handleGetTransactionByHash handles GET /api/v1/transactions/{chain_id}/{hash}
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func (s *Server) handleGetTransactionByHash(w http.ResponseWriter, r *http.Request, hash string) {
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// Validate hash format (already validated in routes.go, but double-check)
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if !isValidHash(hash) {
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writeValidationError(w, ErrInvalidHash)
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return
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}
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// Add query timeout
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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query := `
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SELECT chain_id, hash, block_number, block_hash, transaction_index,
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from_address, to_address, value, gas_price, max_fee_per_gas,
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max_priority_fee_per_gas, gas_limit, gas_used, nonce, input_data,
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status, contract_address, cumulative_gas_used, effective_gas_price,
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created_at, timestamp_iso
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FROM transactions
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WHERE chain_id = $1 AND hash = $2
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`
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var chainID, blockNumber, transactionIndex int
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var txHash, blockHash, fromAddress string
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var toAddress sql.NullString
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var value string
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var gasPrice, maxFeePerGas, maxPriorityFeePerGas, gasLimit, gasUsed, nonce sql.NullInt64
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var inputData sql.NullString
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var status sql.NullInt64
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var contractAddress sql.NullString
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var cumulativeGasUsed int64
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var effectiveGasPrice sql.NullInt64
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var createdAt time.Time
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var timestampISO sql.NullString
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err := s.db.QueryRow(ctx, query, s.chainID, hash).Scan(
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&chainID, &txHash, &blockNumber, &blockHash, &transactionIndex,
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&fromAddress, &toAddress, &value, &gasPrice, &maxFeePerGas,
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&maxPriorityFeePerGas, &gasLimit, &gasUsed, &nonce, &inputData,
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&status, &contractAddress, &cumulativeGasUsed, &effectiveGasPrice,
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&createdAt, ×tampISO,
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)
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if err != nil {
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http.Error(w, fmt.Sprintf("Transaction not found: %v", err), http.StatusNotFound)
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return
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}
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tx := map[string]interface{}{
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"chain_id": chainID,
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"hash": txHash,
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"block_number": blockNumber,
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"block_hash": blockHash,
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"transaction_index": transactionIndex,
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"from_address": fromAddress,
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"value": value,
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"gas_limit": gasLimit.Int64,
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"cumulative_gas_used": cumulativeGasUsed,
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"created_at": createdAt,
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}
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if timestampISO.Valid {
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tx["timestamp_iso"] = timestampISO.String
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}
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if toAddress.Valid {
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tx["to_address"] = toAddress.String
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}
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if gasPrice.Valid {
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tx["gas_price"] = gasPrice.Int64
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}
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if maxFeePerGas.Valid {
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tx["max_fee_per_gas"] = maxFeePerGas.Int64
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}
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if maxPriorityFeePerGas.Valid {
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tx["max_priority_fee_per_gas"] = maxPriorityFeePerGas.Int64
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}
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if gasUsed.Valid {
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tx["gas_used"] = gasUsed.Int64
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}
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if nonce.Valid {
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tx["nonce"] = nonce.Int64
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}
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if inputData.Valid {
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tx["input_data"] = inputData.String
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}
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if status.Valid {
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tx["status"] = status.Int64
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}
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if contractAddress.Valid {
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tx["contract_address"] = contractAddress.String
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}
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if effectiveGasPrice.Valid {
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tx["effective_gas_price"] = effectiveGasPrice.Int64
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(map[string]interface{}{
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"data": tx,
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})
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}
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