81 lines
2 KiB
Go
81 lines
2 KiB
Go
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package main
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import (
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"html/template"
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"io"
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"net/http"
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"regexp"
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"strconv"
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"github.com/labstack/echo"
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)
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type Template struct {
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templates *template.Template
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}
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type publicTpl struct {
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Title string
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Description string
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}
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type unsubTpl struct {
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publicTpl
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Blacklisted bool
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}
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type errorTpl struct {
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publicTpl
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ErrorTitle string
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ErrorMessage string
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}
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var regexValidUUID = regexp.MustCompile("^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-4[a-fA-F0-9]{3}-[8|9|aA|bB][a-fA-F0-9]{3}-[a-fA-F0-9]{12}$")
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func (t *Template) Render(w io.Writer, name string, data interface{}, c echo.Context) error {
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// fmt.Println(t.templates.ExecuteTemplate(os.Stdout, name, nil))
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return t.templates.ExecuteTemplate(w, name, data)
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}
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// handleUnsubscribePage unsubscribes a subscriber and renders a view.
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func handleUnsubscribePage(c echo.Context) error {
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var (
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app = c.Get("app").(*App)
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campUUID = c.Param("campUUID")
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subUUID = c.Param("subUUID")
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blacklist, _ = strconv.ParseBool(c.FormValue("blacklist"))
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out = unsubTpl{}
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)
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out.Blacklisted = blacklist
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out.Title = "Unsubscribe from mailing list"
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if !regexValidUUID.MatchString(campUUID) ||
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!regexValidUUID.MatchString(subUUID) {
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err := errorTpl{}
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err.Title = "Invalid request"
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err.ErrorTitle = err.Title
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err.ErrorMessage = "The unsubscription request contains invalid IDs. Please make sure to follow the correct link."
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return c.Render(http.StatusBadRequest, "error", err)
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}
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// Unsubscribe.
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res, err := app.Queries.Unsubscribe.Exec(campUUID, subUUID, blacklist)
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if err != nil {
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app.Logger.Printf("Error unsubscribing : %v", err)
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return echo.NewHTTPError(http.StatusBadRequest, "Subscription doesn't exist")
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}
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num, err := res.RowsAffected()
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if num == 0 {
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err := errorTpl{}
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err.Title = "Invalid subscription"
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err.ErrorTitle = err.Title
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err.ErrorMessage = "Looks like you are not subscribed to this mailing list."
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return c.Render(http.StatusBadRequest, "error", err)
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}
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return c.Render(http.StatusOK, "unsubscribe", out)
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}
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