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|
package yaml
import (
"errors"
"fmt"
"io"
"os"
"strings"
"sync"
"time"
"airlines/pkg/airports"
"airlines/pkg/model"
"github.com/schollz/progressbar/v3"
"gopkg.in/yaml.v3"
)
type FareInfo struct {
Class string `yaml:"CLASS" json:"class"`
Fare string `yaml:"FARE" json:"fare"`
}
type Flight struct {
FF map[string]FareInfo `yaml:"FF" json:"ff"`
From string `yaml:"FROM" json:"from"`
Status string `yaml:"STATUS" json:"status"`
To string `yaml:"TO" json:"to"`
}
type Schedule struct {
data map[string]map[string]Flight
}
func ParseSchedule(r io.Reader) (*Schedule, error) {
s := &Schedule{
data: make(map[string]map[string]Flight),
}
dec := yaml.NewDecoder(r)
// dec.KnownFields(true) // strict field checking
if err := dec.Decode(&s.data); err != nil {
return nil, err
}
for date, flights := range s.data {
if flights == nil {
s.data[date] = map[string]Flight{}
}
}
return s, nil
}
func UnmarshallYaml(path string) (*Schedule, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
sched, err := ParseSchedule(f)
if err != nil {
return nil, err
}
// for date, flights := range sched.data {
// fmt.Printf("Date: %s (flights: %d)\n", date, len(flights))
// for flightNo, fl := range flights {
// fmt.Printf(" %s: %s -> %s, %s\n", flightNo, fl.From, fl.To, fl.Status)
// for ffKey, fi := range fl.FF {
// fmt.Printf(" FF %s: class=%s fare=%s\n", ffKey, fi.Class, fi.Fare)
// }
// }
// }
// if b, err := json.MarshalIndent(sched, "", " "); err == nil {
// fmt.Println("\nAs JSON:")
// fmt.Println(string(b))
// }
return sched, nil
}
func createFlight(num, from, to, date string, cardID uint64) (*model.Flight, error) {
f := &model.Flight{
Number: num,
From: from,
To: to,
}
ap, _ := airports.LookupIATA(f.From)
f.FromCoords.Lat = ap.Latitude
f.FromCoords.Long = ap.Longitude
d, err := time.Parse("2006-01-02", strings.TrimSpace(date))
if err != nil {
return nil, fmt.Errorf("invalid Date %q: %w", date, err)
}
loc := model.TzFromAirportRecord(ap)
departLocal := time.Date(d.Year(), d.Month(), d.Day(), 0, 0, 0, 0, loc)
f.Date = departLocal.UTC()
ap, _ = airports.LookupIATA(f.To)
f.ToCoords.Lat = ap.Latitude
f.ToCoords.Long = ap.Longitude
return f, nil
}
func createCard(info string) (*model.Card, error) {
prefix, number, _ := model.ParseCardLine(info)
if prefix == "" && number == 0 {
return nil, errors.New("bad card id")
}
return &model.Card{
Prefix: prefix,
Number: number,
}, nil
}
func (s *Schedule) DumpToDb(store model.Store) error {
// var err error
count := int64(0)
for i := range s.data {
count += int64(len(s.data[i]))
}
bar := progressbar.Default(count, "dumping yaml flights")
for date := range s.data {
for flightID, flightInfo := range s.data[date] {
// fmt.Printf("%+v %+v %+v\n", date, flightID, flightInfo)
var wg sync.WaitGroup
sem := make(chan struct{}, 8)
for cardID := range flightInfo.FF {
wg.Add(1)
sem <- struct{}{}
go func() {
defer func() { <-sem }()
defer wg.Done()
defer bar.Add(1)
card, err := createCard(cardID)
if err != nil {
fmt.Println(err)
// return
}
if card != nil {
card, err = store.SaveCard(card)
if err != nil {
fmt.Println(err)
// return
}
}
f, err := createFlight(flightID, flightInfo.From, flightInfo.To, date, card.ID)
if err != nil {
fmt.Println(err)
return
}
if card != nil {
f.UserID = card.UserID
}
if f != nil {
_, err = store.SaveFlight(f)
if err != nil {
fmt.Println(err)
return
}
}
}()
}
wg.Wait()
}
}
return nil
}
|
