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package csv
import (
"encoding/csv"
"errors"
"fmt"
"log"
"os"
"regexp"
"strings"
"sync"
"time"
"airlines/pkg/airports"
"airlines/pkg/model"
"airlines/pkg/names"
"github.com/schollz/progressbar/v3"
)
type csvData struct {
data [][]string
ignoreNonLatinUsers bool
}
func UnmarshallCsv(filePath string, ignoreNonLatinUsers bool) (*csvData, error) {
d := &csvData{ignoreNonLatinUsers: ignoreNonLatinUsers}
f, err := os.Open(filePath)
if err != nil {
return nil, err
}
defer f.Close()
csvReader := csv.NewReader(f)
d.data, err = csvReader.ReadAll()
if err != nil {
log.Fatal("Unable to parse file as CSV for "+filePath, err)
}
return d, nil
}
func createUser(cols map[string]int, data []string) (*model.User, error) {
fio, err := names.ParseLatinName(data[cols["PaxName"]])
if err != nil {
return nil, errors.New(data[cols["PaxName"]] + ":" + err.Error())
}
var bdayDate time.Time
bday := strings.TrimSpace(data[cols["PaxBirthDate"]]) // "YYYY-MM-DD"
if bday == "" {
bdayDate = model.SentinelBirthday()
} else {
bdayDate, err = time.Parse("2006-01-02", bday)
if err != nil {
return nil, fmt.Errorf("bad birthday %q: %w", bday, err)
}
}
u := &model.User{
Name: strings.ToUpper(fio.First),
Surname: strings.ToUpper(fio.Last),
Fathersname: strings.ToUpper(fio.Patronymic),
Birthday: bdayDate,
}
return u, nil
}
func createCard(cols map[string]int, data []string) (*model.Card, error) {
prefix, number, _ := model.ParseCardLine(data[cols["CardNumber"]])
if prefix == "" && number == 0 {
return nil, errors.New("bad card id")
}
return &model.Card{
Prefix: prefix,
Number: number,
}, nil
}
var hhmm = regexp.MustCompile(`^\d{2}:\d{2}$`)
func NormalizeTime(s string) string {
if hhmm.MatchString(s) {
h := (int(s[0]-'0')*10 + int(s[1]-'0'))
m := (int(s[3]-'0')*10 + int(s[4]-'0'))
if h < 24 && m < 60 {
return s
}
return ""
}
digits := make([]byte, 0, 4)
for i := 0; i < len(s); i++ {
c := s[i]
if c >= '0' && c <= '9' {
digits = append(digits, c)
} else if c == ':' {
continue
} else {
return ""
}
}
if len(digits) == 3 {
h := int(digits[0] - '0')
m := int(digits[1]-'0')*10 + int(digits[2]-'0')
if h < 24 && m < 60 {
return fmt.Sprintf("%02d:%02d", h, m)
}
return ""
}
if len(digits) == 4 {
h := int(digits[0]-'0')*10 + int(digits[1]-'0')
m := int(digits[2]-'0')*10 + int(digits[3]-'0')
if h < 24 && m < 60 {
return fmt.Sprintf("%02d:%02d", h, m)
}
return ""
}
return ""
}
func createFlight(cols map[string]int, data []string) (*model.Flight, error) {
f := &model.Flight{}
f.From = strings.TrimSpace(data[cols["From"]])
f.To = strings.TrimSpace(data[cols["Dest"]])
f.Number = strings.TrimSpace(data[cols["FlightCodeSh"]])
f.Code = strings.TrimSpace(data[cols["Code"]])
d, err := time.Parse("2006-01-02 15:04", strings.TrimSpace(data[cols["DepartDate"]])+" "+NormalizeTime(strings.TrimSpace(data[cols["DepartTime"]])))
if err != nil {
return nil, fmt.Errorf("invalid Date %q: %w", strings.TrimSpace(data[cols["DepartDate"]])+" "+NormalizeTime(strings.TrimSpace(data[cols["DepartTime"]])), err)
}
ap, _ := airports.LookupIATA(f.From)
f.FromCoords.Lat = ap.Latitude
f.FromCoords.Long = ap.Longitude
loc := model.TzFromAirportRecord(ap)
departLocal := time.Date(d.Year(), d.Month(), d.Day(), d.Hour(), d.Minute(), 0, 0, loc)
f.Date = departLocal.UTC()
f.HasTime = strings.TrimSpace(data[cols["DepartTime"]]) != ""
ap, _ = airports.LookupIATA(f.To)
f.ToCoords.Lat = ap.Latitude
f.ToCoords.Long = ap.Longitude
return f, nil
}
func (dat *csvData) DumpToDb(store model.Store) {
bar := progressbar.Default(int64(len(dat.data)-1), "dumping csv data")
cols := map[string]int{}
for i, col := range dat.data[0] {
cols[col] = i
}
var wg sync.WaitGroup
sem := make(chan struct{}, 8)
for i := 1; i < len(dat.data); i++ {
sem <- struct{}{}
wg.Add(1)
go func() {
defer func() { <-sem }()
defer wg.Done()
defer bar.Add(1)
var u *model.User
var err error
if dat.ignoreNonLatinUsers {
goto skipUser
}
u, err = createUser(cols, dat.data[i])
if err != nil {
fmt.Println(err)
// return
}
u, err = store.SaveUser(u)
if err != nil {
fmt.Println(err)
// return
}
skipUser:
c, err := createCard(cols, dat.data[i])
if err != nil {
// fmt.Println(err)
// return
}
if c != nil {
if u != nil {
c.UserID = u.ID
}
c, err = store.SaveCard(c)
if err != nil {
// fmt.Println(err)
// return
}
}
f, err := createFlight(cols, dat.data[i])
if err != nil {
fmt.Println(err)
return
}
if f != nil {
if u != nil {
f.UserID = u.ID
}
if c != nil {
f.CardID = c.ID
}
_, err = store.SaveFlight(f)
if err != nil {
fmt.Println(err)
// return
}
}
}()
}
}
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