Dmitry VerkhoturovandUmputun
9df2b2a9ed
* move email unsubscription page outside of API and make it HTML * make separate HTML template for SendErrorHTML * fix error template name * add test for SendErrorHTML, introduce MustExecute function * fix content check in test of TestSendErrorHTML * fix logging test to be more generic and not depend on line numbers
111 lines
3.9 KiB
Go
111 lines
3.9 KiB
Go
package rest
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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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"io"
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"net/http"
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"net/url"
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"runtime"
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"strings"
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"github.com/go-chi/render"
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log "github.com/go-pkgz/lgr"
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"github.com/go-pkgz/rest"
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)
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// All error codes for UI mapping and translation
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const (
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ErrInternal = 0 // any internal error
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ErrCommentNotFound = 1 // can't find comment
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ErrDecode = 2 // failed to unmarshal incoming request
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ErrNoAccess = 3 // rejected by auth
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ErrCommentValidation = 4 // validation failed
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ErrPostNotFound = 5 // can't find post
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ErrSiteNotFound = 6 // can't find site
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ErrUserBlocked = 7 // user blocked
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ErrReadOnly = 8 // write failed on read only
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ErrCommentRejected = 9 // general error on rejected comment change
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ErrCommentEditExpired = 10 // too late for edit
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ErrCommentEditChanged = 11 // parent comment cannot be changed
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ErrVoteRejected = 12 // general error on vote rejected
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ErrVoteSelf = 13 // vote for own comment
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ErrVoteDbl = 14 // already voted for the comment
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ErrVoteMax = 15 // too many votes for the comment
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ErrVoteMinScore = 16 // min score reached for the comment
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ErrActionRejected = 17 // general error for rejected actions
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ErrAssetNotFound = 18 // requested file not found
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)
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const errorHtml = `<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width"/>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
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</head>
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<body>
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<div style="text-align: center; font-family: Arial, sans-serif; font-size: 18px;">
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<h1 style="position: relative; color: #4fbbd6; margin-top: 0.2em;">Remark42</h1>
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<p style="position: relative; max-width: 20em; margin: 0 auto 1em auto; line-height: 1.4em;">{{.Error}}: {{.Details}}.</p>
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</div>
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</body>
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</html>
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`
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// errTmplData store data for error message
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type errTmplData struct {
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Error string
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Details string
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}
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// SendErrorHTML makes html body with provided template and responds with provided http status code,
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// error code is not included in render as it is intended for UI developers and not for the users
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func SendErrorHTML(w http.ResponseWriter, r *http.Request, httpStatusCode int, err error, details string, errCode int) {
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// MustExecute behaves like template.Execute, but panics if an error occurs.
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MustExecute := func(tmpl *template.Template, wr io.Writer, data interface{}) {
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if err := tmpl.Execute(wr, data); err != nil {
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panic(err)
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}
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}
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tmpl := template.Must(template.New("error").Parse(errorHtml))
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log.Printf("[WARN] %s", errDetailsMsg(r, httpStatusCode, err, details, errCode))
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render.Status(r, httpStatusCode)
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msg := bytes.Buffer{}
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MustExecute(tmpl, &msg, errTmplData{
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Error: err.Error(),
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Details: details,
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})
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render.HTML(w, r, msg.String())
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}
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// SendErrorJSON makes {error: blah, details: blah} json body and responds with error code
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func SendErrorJSON(w http.ResponseWriter, r *http.Request, httpStatusCode int, err error, details string, errCode int) {
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log.Printf("[WARN] %s", errDetailsMsg(r, httpStatusCode, err, details, errCode))
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render.Status(r, httpStatusCode)
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render.JSON(w, r, rest.JSON{"error": err.Error(), "details": details, "code": errCode})
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}
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func errDetailsMsg(r *http.Request, httpStatusCode int, err error, details string, errCode int) string {
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uinfoStr := ""
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if user, e := GetUserInfo(r); e == nil {
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uinfoStr = user.Name + "/" + user.ID + " - "
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}
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q := r.URL.String()
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if qun, e := url.QueryUnescape(q); e == nil {
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q = qun
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}
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srcFileInfo := ""
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if pc, file, line, ok := runtime.Caller(2); ok {
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fnameElems := strings.Split(file, "/")
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funcNameElems := strings.Split(runtime.FuncForPC(pc).Name(), "/")
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srcFileInfo = fmt.Sprintf("[%s:%d %s]", strings.Join(fnameElems[len(fnameElems)-3:], "/"),
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line, funcNameElems[len(funcNameElems)-1])
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}
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return fmt.Sprintf("%s - %v - %d (%d) - %s%s - %s",
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details, err, httpStatusCode, errCode, uinfoStr, q, srcFileInfo)
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}
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