ussd/cmd/main.go

971 lines
22 KiB
Go

package main
import (
"bytes"
"context"
"encoding/json"
"flag"
"fmt"
"io"
"net/http"
"os"
"path"
"time"
"git.defalsify.org/vise.git/cache"
"git.defalsify.org/vise.git/engine"
"git.defalsify.org/vise.git/lang"
"git.defalsify.org/vise.git/persist"
"git.defalsify.org/vise.git/resource"
"git.defalsify.org/vise.git/state"
)
const (
USERFLAG_LANGUAGE_SET = iota + state.FLAG_USERSTART
USERFLAG_ACCOUNT_CREATED
USERFLAG_ACCOUNT_PENDING
USERFLAG_ACCOUNT_SUCCESS
USERFLAG_ACCOUNT_UNLOCKED
USERFLAG_INVALID_RECIPIENT
USERFLAG_INVALID_RECIPIENT_WITH_INVITE
USERFLAG_INCORRECTPIN
USERFLAG_UNLOCKFORUPDATE
USERFLAG_INVALID_AMOUNT
USERFLAG_QUERYPIN
USERFLAG_VALIDPIN
USERFLAG_INVALIDPIN
)
const (
createAccountURL = "https://custodial.sarafu.africa/api/account/create"
trackStatusURL = "https://custodial.sarafu.africa/api/track/"
checkBalanceURL = "https://custodial.sarafu.africa/api/account/status/"
)
type accountResponse struct {
Ok bool `json:"ok"`
Result struct {
CustodialId json.Number `json:"custodialId"`
PublicKey string `json:"publicKey"`
TrackingId string `json:"trackingId"`
} `json:"result"`
}
type trackStatusResponse struct {
Ok bool `json:"ok"`
Result struct {
Transaction struct {
CreatedAt time.Time `json:"createdAt"`
Status string `json:"status"`
TransferValue json.Number `json:"transferValue"`
TxHash string `json:"txHash"`
TxType string `json:"txType"`
}
} `json:"result"`
}
type balanceResponse struct {
Ok bool `json:"ok"`
Result struct {
Balance string `json:"balance"`
Nonce json.Number `json:"nonce"`
} `json:"result"`
}
type fsData struct {
path string
st *state.State
}
func codeFromCtx(ctx context.Context) string {
var code string
engine.Logg.DebugCtxf(ctx, "in msg", "ctx", ctx, "val", code)
if ctx.Value("Language") != nil {
lang := ctx.Value("Language").(lang.Language)
code = lang.Code
}
return code
}
func (fsd *fsData) saveFirstName(cxt context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
if len(input) > 0 {
name := string(input)
accountData["FirstName"] = name
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
}
return res, nil
}
func (fsd *fsData) saveFamilyName(cxt context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
if len(input) > 0 {
//Save name
secondname := string(input)
accountData["FamilyName"] = secondname
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
}
return res, nil
}
func (fsd *fsData) saveYOB(cxt context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
if len(input) > 0 {
yob := string(input)
accountData["YOB"] = yob
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
}
return res, nil
}
func (fsd *fsData) saveLocation(cxt context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
if len(input) > 0 {
location := string(input)
accountData["Location"] = location
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
}
return res, nil
}
func (fsd *fsData) saveGender(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
if len(input) > 0 {
gender := string(input)
switch gender {
case "1":
gender = "Male"
case "2":
gender = "Female"
case "3":
gender = "Other"
}
fmt.Println("gender", gender)
accountData["Gender"] = gender
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
}
return res, nil
}
func (fsd *fsData) saveOfferings(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
if len(input) > 0 {
offerings := string(input)
accountData["Offerings"] = offerings
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
}
return res, nil
}
func (fsd *fsData) SetLanguageSelected(ctx context.Context, sym string, input []byte) (resource.Result, error) {
inputStr := string(input)
res := resource.Result{}
switch inputStr {
case "0":
res.FlagSet = []uint32{state.FLAG_LANG}
res.Content = "eng"
case "1":
res.FlagSet = []uint32{state.FLAG_LANG}
res.Content = "swa"
default:
}
res.FlagSet = append(res.FlagSet, USERFLAG_LANGUAGE_SET)
return res, nil
}
func (fsd *fsData) create_account(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
f, err := os.OpenFile(fp, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
return res, err
}
f.Close()
accountResp, err := createAccount()
if err != nil {
fmt.Println("Failed to create account:", err)
return res, err
}
accountData := map[string]string{
"TrackingId": accountResp.Result.TrackingId,
"PublicKey": accountResp.Result.PublicKey,
"CustodialId": accountResp.Result.CustodialId.String(),
"Status": "PENDING",
}
jsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, jsonData, 0644)
if err != nil {
return res, err
}
res.FlagSet = append(res.FlagSet, USERFLAG_ACCOUNT_CREATED)
return res, err
}
func (fsd *fsData) resetUnlockForUpdate(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
res.FlagReset = append(res.FlagReset, USERFLAG_UNLOCKFORUPDATE)
return res, nil
}
func (fsd *fsData) resetAccountUnlocked(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
res.FlagReset = append(res.FlagReset, USERFLAG_ACCOUNT_UNLOCKED)
return res, nil
}
func (fsd *fsData) checkIdentifier(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
res.Content = accountData["PublicKey"]
return res, nil
}
func (fsd *fsData) unLock(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
pin := string(input)
if len(input) > 0 {
if pin == "0000" {
res.FlagSet = append(res.FlagSet, USERFLAG_INCORRECTPIN)
res.FlagReset = append(res.FlagReset, USERFLAG_ACCOUNT_UNLOCKED)
return res, nil
}
if fsd.st.MatchFlag(USERFLAG_ACCOUNT_UNLOCKED, false) {
res.FlagSet = append(res.FlagSet, USERFLAG_ACCOUNT_UNLOCKED)
} else {
res.FlagReset = append(res.FlagReset, USERFLAG_ACCOUNT_UNLOCKED)
}
}
return res, nil
}
func (fsd *fsData) ResetIncorrectPin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
isIncorrectPinSet := fsd.st.MatchFlag(USERFLAG_INCORRECTPIN, true)
if isIncorrectPinSet {
res.FlagReset = append(res.FlagReset, USERFLAG_INCORRECTPIN)
} else {
res.FlagReset = append(res.FlagReset, USERFLAG_INCORRECTPIN)
}
return res, nil
}
func (fsd *fsData) ShowUpdateSuccess(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
return res, nil
}
func (fsd *fsData) check_account_status(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
status, err := checkAccountStatus(accountData["TrackingId"])
if err != nil {
fmt.Println("Error checking account status:", err)
return res, nil
}
accountData["Status"] = status
if status == "SUCCESS" {
res.FlagSet = append(res.FlagSet, USERFLAG_ACCOUNT_SUCCESS)
res.FlagReset = append(res.FlagReset, USERFLAG_ACCOUNT_PENDING)
} else {
res.FlagReset = append(res.FlagSet, USERFLAG_ACCOUNT_SUCCESS)
res.FlagSet = append(res.FlagReset, USERFLAG_ACCOUNT_PENDING)
}
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
return res, nil
}
func createAccount() (*accountResponse, error) {
resp, err := http.Post(createAccountURL, "application/json", nil)
if err != nil {
return nil, err
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return nil, err
}
var accountResp accountResponse
err = json.Unmarshal(body, &accountResp)
if err != nil {
return nil, err
}
return &accountResp, nil
}
func checkAccountStatus(trackingId string) (string, error) {
resp, err := http.Get(trackStatusURL + trackingId)
if err != nil {
return "", err
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return "", err
}
var trackResp trackStatusResponse
err = json.Unmarshal(body, &trackResp)
if err != nil {
return "", err
}
status := trackResp.Result.Transaction.Status
return status, nil
}
func (fsd *fsData) quit(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
switch codeFromCtx(ctx) {
case "swa":
res.Content = "Asante kwa kutumia huduma ya Sarafu. Kwaheri!"
default:
res.Content = "Thank you for using Sarafu. Goodbye!"
}
res.FlagReset = append(res.FlagReset, USERFLAG_ACCOUNT_UNLOCKED)
return res, nil
}
func (fsd *fsData) checkBalance(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
resp, err := http.Get(checkBalanceURL + accountData["PublicKey"])
if err != nil {
return res, nil
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return res, nil
}
var balanceResp balanceResponse
err = json.Unmarshal(body, &balanceResp)
if err != nil {
return res, nil
}
balance := balanceResp.Result.Balance
res.Content = balance
return res, nil
}
func (fsd *fsData) validate_recipient(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
recipient := string(input)
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
if recipient != "0" {
// mimic invalid number check
if recipient == "000" {
res.FlagSet = append(res.FlagSet, USERFLAG_INVALID_RECIPIENT)
res.Content = recipient
return res, nil
}
accountData["Recipient"] = recipient
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
}
return res, nil
}
func (fsd *fsData) transaction_reset(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
// reset the recipient
accountData["Recipient"] = ""
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
res.FlagReset = append(res.FlagReset, USERFLAG_INVALID_RECIPIENT, USERFLAG_INVALID_RECIPIENT_WITH_INVITE)
return res, nil
}
func (fsd *fsData) reset_transaction_amount(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
// reset the amount
accountData["Amount"] = ""
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
res.FlagReset = append(res.FlagReset, USERFLAG_INVALID_AMOUNT)
return res, nil
}
func (fsd *fsData) max_amount(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
// mimic a max amount
res.Content = "10.00"
return res, nil
}
func (fsd *fsData) validate_amount(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
amount := string(input)
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
if amount != "0" {
// mimic invalid amount
if amount == "00" {
res.FlagSet = append(res.FlagSet, USERFLAG_INVALID_AMOUNT)
res.Content = amount
return res, nil
}
res.Content = amount
accountData["Amount"] = amount
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
return res, nil
}
return res, nil
}
func (fsd *fsData) get_recipient(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
res.Content = accountData["Recipient"]
return res, nil
}
func (fsd *fsData) getProfileInfo(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
name := accountData["FirstName"]
gender := accountData["Gender"]
age := accountData["YOB"]
location := accountData["Location"]
formattedData := fmt.Sprintf("Name: %s\nGender: %s\nAge: %s\nLocation: %s\n", name, gender, age, location)
res.Content = formattedData
return res, nil
}
func (fsd *fsData) get_sender(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
res.Content = accountData["PublicKey"]
return res, nil
}
func (fsd *fsData) quitWithBalance(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
resp, err := http.Get(checkBalanceURL + accountData["PublicKey"])
if err != nil {
return res, nil
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return res, nil
}
var balanceResp balanceResponse
err = json.Unmarshal(body, &balanceResp)
if err != nil {
return res, nil
}
balance := balanceResp.Result.Balance
res.Content = fmt.Sprintf("Your account balance is: %s", balance)
res.FlagReset = append(res.FlagReset, USERFLAG_ACCOUNT_UNLOCKED)
return res, nil
}
func (fsd *fsData) save_pin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
accountPIN := string(input)
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
accountData["AccountPIN"] = accountPIN
updatedJsonData, err := json.Marshal(accountData)
if err != nil {
return res, err
}
err = os.WriteFile(fp, updatedJsonData, 0644)
if err != nil {
return res, err
}
return res, nil
}
func (fsd *fsData) verify_pin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
res := resource.Result{}
fp := fsd.path + "_data"
jsonData, err := os.ReadFile(fp)
if err != nil {
return res, err
}
var accountData map[string]string
err = json.Unmarshal(jsonData, &accountData)
if err != nil {
return res, err
}
if bytes.Equal(input, []byte(accountData["AccountPIN"])) {
res.FlagSet = []uint32{USERFLAG_VALIDPIN}
res.FlagReset = []uint32{USERFLAG_INVALIDPIN}
} else {
res.FlagSet = []uint32{USERFLAG_INVALIDPIN}
}
return res, nil
}
var (
scriptDir = path.Join("services", "registration")
)
func main() {
var dir string
var root string
var size uint
var sessionId string
flag.StringVar(&dir, "d", ".", "resource dir to read from")
flag.UintVar(&size, "s", 0, "max size of output")
flag.StringVar(&root, "root", "root", "entry point symbol")
flag.StringVar(&sessionId, "session-id", "default", "session id")
flag.Parse()
fmt.Fprintf(os.Stderr, "starting session at symbol '%s' using resource dir: %s\n", root, dir)
ctx := context.Background()
st := state.NewState(15)
st.UseDebug()
state.FlagDebugger.Register(USERFLAG_LANGUAGE_SET, "LANGUAGE_CHANGE")
state.FlagDebugger.Register(USERFLAG_ACCOUNT_CREATED, "ACCOUNT_CREATED")
state.FlagDebugger.Register(USERFLAG_ACCOUNT_SUCCESS, "ACCOUNT_SUCCESS")
state.FlagDebugger.Register(USERFLAG_ACCOUNT_PENDING, "ACCOUNT_PENDING")
state.FlagDebugger.Register(USERFLAG_INCORRECTPIN, "INCORRECTPIN")
rfs := resource.NewFsResource(scriptDir)
ca := cache.NewCache()
cfg := engine.Config{
Root: "root",
SessionId: sessionId,
}
dp := path.Join(scriptDir, ".state")
err := os.MkdirAll(dp, 0700)
if err != nil {
fmt.Fprintf(os.Stderr, "state dir create exited with error: %v\n", err)
os.Exit(1)
}
pr := persist.NewFsPersister(dp)
en, err := engine.NewPersistedEngine(ctx, cfg, pr, rfs)
if err != nil {
pr = pr.WithContent(&st, ca)
err = pr.Save(cfg.SessionId)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to save state with error: %v\n", err)
}
en, err = engine.NewPersistedEngine(ctx, cfg, pr, rfs)
if err != nil {
fmt.Fprintf(os.Stderr, "engine create exited with error: %v\n", err)
os.Exit(1)
}
}
fp := path.Join(dp, sessionId)
fs := &fsData{
path: fp,
st: &st,
}
rfs.AddLocalFunc("select_language", fs.SetLanguageSelected)
rfs.AddLocalFunc("create_account", fs.create_account)
rfs.AddLocalFunc("save_pin", fs.save_pin)
rfs.AddLocalFunc("verify_pin", fs.verify_pin)
rfs.AddLocalFunc("check_identifier", fs.checkIdentifier)
rfs.AddLocalFunc("check_account_status", fs.check_account_status)
rfs.AddLocalFunc("unlock_account", fs.unLock)
rfs.AddLocalFunc("quit", fs.quit)
rfs.AddLocalFunc("check_balance", fs.checkBalance)
rfs.AddLocalFunc("validate_recipient", fs.validate_recipient)
rfs.AddLocalFunc("transaction_reset", fs.transaction_reset)
rfs.AddLocalFunc("max_amount", fs.max_amount)
rfs.AddLocalFunc("validate_amount", fs.validate_amount)
rfs.AddLocalFunc("reset_transaction_amount", fs.reset_transaction_amount)
rfs.AddLocalFunc("get_recipient", fs.get_recipient)
rfs.AddLocalFunc("get_sender", fs.get_sender)
rfs.AddLocalFunc("reset_incorrect", fs.ResetIncorrectPin)
rfs.AddLocalFunc("save_firstname", fs.saveFirstName)
rfs.AddLocalFunc("save_familyname", fs.saveFamilyName)
rfs.AddLocalFunc("save_gender", fs.saveGender)
rfs.AddLocalFunc("save_location", fs.saveLocation)
rfs.AddLocalFunc("save_yob", fs.saveYOB)
rfs.AddLocalFunc("save_offerings", fs.saveOfferings)
rfs.AddLocalFunc("quit_with_balance", fs.quitWithBalance)
rfs.AddLocalFunc("show_update_success", fs.ShowUpdateSuccess)
rfs.AddLocalFunc("reset_unlocked", fs.resetAccountUnlocked)
rfs.AddLocalFunc("reset_unlock_for_update", fs.resetUnlockForUpdate)
rfs.AddLocalFunc("get_profile_info", fs.getProfileInfo)
cont, err := en.Init(ctx)
en.SetDebugger(engine.NewSimpleDebug(nil))
if err != nil {
fmt.Fprintf(os.Stderr, "engine init exited with error: %v\n", err)
os.Exit(1)
}
if !cont {
_, err = en.WriteResult(ctx, os.Stdout)
if err != nil {
fmt.Fprintf(os.Stderr, "dead init write error: %v\n", err)
os.Exit(1)
}
err = en.Finish()
if err != nil {
fmt.Fprintf(os.Stderr, "engine finish error: %v\n", err)
os.Exit(1)
}
os.Stdout.Write([]byte{0x0a})
os.Exit(0)
}
err = engine.Loop(ctx, en, os.Stdin, os.Stdout)
if err != nil {
fmt.Fprintf(os.Stderr, "loop exited with error: %v\n", err)
os.Exit(1)
}
}