105 lines
2.2 KiB
Go
105 lines
2.2 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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"io"
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"log"
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"net/http"
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"net/url"
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"os"
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"strings"
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"text/template"
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"time"
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)
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var ledgerTpl *template.Template
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var htmlTpl *template.Template
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const LEDGER_FILE = "test.txt"
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type TxData struct {
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Name string
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Date string
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Amount string
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Account string
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}
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func init() {
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ledgerTpl = template.Must(template.ParseGlob("tx/*.txt"))
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log.Println(ledgerTpl.DefinedTemplates())
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htmlTpl = template.Must(template.ParseGlob("templates/*.html"))
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}
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func main() {
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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htmlTpl.ExecuteTemplate(w, "index.html", ledgerTpl)
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})
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http.HandleFunc("/new", func(w http.ResponseWriter, r *http.Request) {
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if err := r.ParseForm(); err != nil {
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http.Error(w, err.Error(), 400)
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return
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}
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fmt.Println(r.Form)
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tx, err := newTx(r.Form)
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if err != nil {
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http.Error(w, err.Error(), 400)
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log.Println(err, r.Form)
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return
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}
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if err := htmlTpl.ExecuteTemplate(w, "new.html", struct {
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Tx string
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}{tx}); err != nil {
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http.Error(w, err.Error(), 500)
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}
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})
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http.HandleFunc("/submit", func(w http.ResponseWriter, r *http.Request) {
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if err := r.ParseForm(); err != nil {
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http.Error(w, err.Error(), 400)
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return
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}
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tx := r.FormValue("tx")
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if err := appendToFile(tx); err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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if err := htmlTpl.ExecuteTemplate(w, "success.html", struct {
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Tx string
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}{tx}); err != nil {
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http.Error(w, err.Error(), 500)
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}
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})
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log.Println("Listen on http://localhost:8000")
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log.Fatal(http.ListenAndServe(":8000", nil))
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}
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func newTx(params url.Values) (result string, err error) {
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name := params.Get("action")
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data := TxData{
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Date: time.Now().Format("2006/01/02"),
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Amount: params.Get("amount"),
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Account: params.Get("account"),
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Name: params.Get("name"),
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}
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var buf bytes.Buffer
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err = ledgerTpl.ExecuteTemplate(&buf, name, data)
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return buf.String(), nil
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}
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func appendToFile(tx string) (err error) {
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f, err := os.OpenFile(LEDGER_FILE, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
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if err != nil {
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return err
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}
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defer f.Close()
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buf := strings.NewReader(strings.ReplaceAll(tx, "\r", "")) // Remove CR generated from browser
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_, err = io.Copy(f, buf)
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return err
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}
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