196 lines
3.8 KiB
Go
196 lines
3.8 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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"html/template"
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"log"
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"net/http"
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"regexp"
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"strings"
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"github.com/davecgh/go-spew/spew"
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"github.com/stapelberg/qrbill"
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)
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var (
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fieldNameRe = regexp.MustCompile(`<br>( )*([^:]+):`)
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stringLiteralRe = regexp.MustCompile(`"([^"]*)"`)
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parenRe = regexp.MustCompile(`\(([^)]+)\) `)
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)
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var tmpl = template.Must(template.New("").Parse(`<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>QR Bill HTML Debug Page</title>
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<style type="text/css">
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.fieldname { font-weight: bold; }
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.stringliteral { color: blue; }
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#spews { display: flex; }
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#spews div { border: 1px solid black; margin: 1em; padding: 1em; }
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.qrch { font-family: monospace; }
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th { text-align: left; }
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#params tr td:nth-child(2) { color: blue; }
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#params tr td:nth-child(1)::before { content: "&"; }
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#params tr td:nth-child(1)::after { content: "="; }
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</style>
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</head>
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<body>
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<div id="spews">
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<div class="qrch">
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<h1>URL parameters</h1>
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<table id="params">
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<tr>
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<th>Parameter</th>
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<th>Value</th>
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</tr>
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<tr>
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<td>criban</td>
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<td>{{ .Criban }}</td>
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</tr>
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<tr>
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<td>crname</td>
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<td>{{ .Crname }}</td>
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</tr>
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<tr>
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<td>craddr1</td>
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<td>{{ .Craddr1 }}</td>
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</tr>
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<tr>
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<td>craddr2</td>
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<td>{{ .Craddr2 }}</td>
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</tr>
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<tr>
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<td>crpost</td>
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<td>{{ .Crpost }}</td>
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</tr>
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<tr>
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<td>crcity</td>
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<td>{{ .Crcity }}</td>
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</tr>
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<tr>
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<td>crcountry</td>
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<td>{{ .Crcountry }}</td>
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</tr>
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<tr>
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<td>udname</td>
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<td>{{ .Udname }}</td>
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</tr>
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<tr>
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<td>udaddr1</td>
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<td>{{ .Udaddr1 }}</td>
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</tr>
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<tr>
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<td>udaddr2</td>
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<td>{{ .Udaddr2 }}</td>
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</tr>
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<tr>
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<td>udpost</td>
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<td>{{ .Udpost }}</td>
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</tr>
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<tr>
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<td>udcity</td>
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<td>{{ .Udcity }}</td>
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</tr>
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<tr>
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<td>udcountry</td>
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<td>{{ .Udcountry }}</td>
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</tr>
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<tr>
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<td>message</td>
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<td>{{ .Message }}</td>
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</tr>
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</table>
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</div>
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`))
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func debugHTML(w http.ResponseWriter, r *http.Request, prefix string, qrch *qrbill.QRCH) {
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w.Header().Add("Content-Type", "text/html; charset=utf-8")
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var buf bytes.Buffer
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err := tmpl.Execute(&buf, struct {
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Criban string
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Crname string
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Craddr1 string
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Craddr2 string
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Crpost string
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Crcity string
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Crcountry string
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Udname string
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Udaddr1 string
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Udaddr2 string
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Udpost string
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Udcity string
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Udcountry string
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Message string
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}{
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Criban: r.FormValue("criban"),
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Crname: r.FormValue("crname"),
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Craddr1: r.FormValue("craddr1"),
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Craddr2: r.FormValue("craddr2"),
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Crpost: r.FormValue("crpost"),
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Crcity: r.FormValue("crcity"),
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Crcountry: r.FormValue("crcountry"),
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Udname: r.FormValue("udname"),
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Udaddr1: r.FormValue("udaddr1"),
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Udaddr2: r.FormValue("udaddr2"),
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Udpost: r.FormValue("udpost"),
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Udcity: r.FormValue("udcity"),
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Udcountry: r.FormValue("udcountry"),
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Message: r.FormValue("message"),
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})
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if err != nil {
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log.Printf("%s %s", prefix, err)
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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fmt.Fprintf(w, "%s", buf.String())
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spew := func(vars ...interface{}) string {
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sp := spew.Sdump(vars...)
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sp = strings.ReplaceAll(sp, "\n", "<br>")
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sp = strings.ReplaceAll(sp, " ", " ")
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sp = parenRe.ReplaceAllString(sp, "")
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sp = stringLiteralRe.ReplaceAllStringFunc(sp, func(stringLiteral string) string {
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return `<span class="stringliteral">` + stringLiteral + "</span>"
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})
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sp = fieldNameRe.ReplaceAllStringFunc(sp, func(fieldName string) string {
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return `<span class="fieldname">` + fieldName + "</span>"
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})
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return sp
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}
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fmt.Fprintf(w, `<div class="qrch"><h1>input</h1>%s</div>`, spew(qrch))
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fmt.Fprintf(w, `<div class="qrch"><h1>validated</h1>%s</div>`, spew(qrch.Validate()))
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r.URL.Path = "/qr"
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v := r.URL.Query()
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v.Set("format", "png")
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r.URL.RawQuery = v.Encode()
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fmt.Fprintf(w, `<div class="qrch"><h1>QR Bill</h1><img src="%s" width="200" height="200"></div>`, r.URL.String())
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}
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