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Railway_ticket.go
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Railway_ticket.go
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package main
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"os"
"strconv"
"time"
"./query_parser"
"./stationname_parser"
"github.com/tealeg/xlsx"
)
const (
configFile = "./config.json"
stationNamesFile = "./stationname_parser/station_name.js"
queryUrlPattern = "https://kyfw.12306.cn/otn/lcxxcx/query?purpose_codes=ADULT&queryDate=%s&from_station=%s&to_station=%s"
excelFileName = "record.xlsx"
refreshInterval = 2 * time.Minute
)
type Config struct {
StationTrainCodes []string
FromStationName,
ToStationName,
Date,
Type string
}
func readConfigFile() []*Config {
f, err := ioutil.ReadFile(configFile)
if err != nil {
log.Fatal("readConfigFile", err)
return nil
}
var configs []*Config
dec := json.NewDecoder(bytes.NewReader(f))
for {
var c Config
if err := dec.Decode(&c); err == io.EOF {
break
} else if err != nil {
log.Fatal("readConfigFile2", err)
}
configs = append(configs, &c)
}
return configs
}
func httpGet(url string) (string, error) {
response, err := http.Get(url)
if err != nil {
log.Fatal("httpGet", err)
return "", err
}
defer response.Body.Close()
body, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Fatal("httpGet2", err)
return "", err
}
return string(body), nil
}
func buildQueryUrl(from, to, date string) string {
queryUrl := fmt.Sprintf(queryUrlPattern,
date,
from,
to)
log.Println("query url", queryUrl)
return queryUrl
}
func getAvailableSeats(typeName string, query *query_parser.QueryResponse) string {
switch typeName {
case "商务座":
return query.SwzNum
case "特等座":
return query.TzNum
case "一等座":
return query.ZyNum
case "二等座":
return query.ZeNum
case "软卧":
return query.RwNum
case "硬卧":
return query.YwNum
case "无座":
return query.WzNum
default:
return ""
}
}
func main() {
// Read config
configs := readConfigFile()
if configs == nil {
log.Fatal("main no config")
}
// Read station names&codes
file, err := os.Open(stationNamesFile)
if err != nil {
log.Fatal("open station names file", err)
}
// Open record file
excelFile, err := xlsx.OpenFile(excelFileName)
if err != nil {
excelFile = xlsx.NewFile()
}
stationNames := stationname_parser.ParseStations(file)
c := time.Tick(refreshInterval)
for {
for _, config := range configs {
fromStationCode := stationNames[config.FromStationName]
toStationCode := stationNames[config.ToStationName]
queryBytes, err := httpGet(buildQueryUrl(
fromStationCode,
toStationCode,
config.Date))
//queryBytes, err := ioutil.ReadFile("./query.json")
queries := query_parser.ParseQuery(string(queryBytes))
if err != nil {
log.Fatal("main", err)
}
for _, query := range queries {
for _, v := range config.StationTrainCodes {
// variety of trains
if v == query.StationTrainCode {
sheetName := v + "|" + config.FromStationName +
"-" + config.ToStationName
sheet, err := excelFile.AddSheet(sheetName)
if err != nil {
sheet = excelFile.Sheet[sheetName]
}
row := sheet.AddRow()
cell_formattedTime := row.AddCell()
cell_unixTime := row.AddCell()
cell_val := row.AddCell()
cell_formattedTime.Value = time.Now().Format(
"2006-01-02 15:04:05")
cell_unixTime.SetDateTime(time.Now())
val, err := strconv.Atoi(
getAvailableSeats(config.Type, query))
if err != nil {
log.Fatal("main atoi", err)
}
cell_val.SetInt(val)
excelFile.Save(excelFileName)
log.Println(query.StationTrainCode,
query.FromStationName,
query.ToStationName,
getAvailableSeats(config.Type, query))
}
}
}
excelFile.Save(excelFileName)
}
<-c // delay
}
}