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Add support for sending 'opt-in' campaigns. 

- Campaigns now have a `type` property (regular, opt-in)
- Opt-in campaigns work for double opt-in lists and e-mail
  subscribers who haven't confirmed their subscriptions.
- Lists UI shows a 'Send opt-in campaign' optin that
  automatically creates an opt-in campaign for the list
  with a default message body that can be tweaked before
  sending the campaign.
- Primary usecase is to send opt-in campaigns to subscribers
  who are added via bulk import.

This is a breaking change. Adds a new Postgres enum type
`campaign_type` and a new column `type` to the campaigns table.
This commit is contained in:
Kailash Nadh 2020-02-03 13:18:26 +05:30
parent 9a890c77ab
commit 022b35c4a7
11 changed files with 185 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

98
campaigns.go
View File

@ -1,10 +1,13 @@
package main
import (
"bytes"
"database/sql"
"errors"
"fmt"
"html/template"
"net/http"
"net/url"
"regexp"
"strconv"
"strings"
@ -33,6 +36,8 @@ type campaignReq struct {
// This is only relevant to campaign test requests.
SubscriberEmails pq.StringArray `json:"subscribers"`
Type string `json:"type"`
}
type campaignStats struct {
@ -191,9 +196,20 @@ func handleCreateCampaign(c echo.Context) error {
return err
}
// If the campaign's 'opt-in', prepare a default message.
if o.Type == models.CampaignTypeOptin {
op, err := makeOptinCampaignMessage(o, app)
if err != nil {
return err
}
o = op
}
// Validate.
if err := validateCampaignFields(o, app); err != nil {
if c, err := validateCampaignFields(o, app); err != nil {
return echo.NewHTTPError(http.StatusBadRequest, err.Error())
} else {
o = c
}
if !app.Manager.HasMessenger(o.MessengerID) {
@ -205,6 +221,7 @@ func handleCreateCampaign(c echo.Context) error {
var newID int
if err := app.Queries.CreateCampaign.Get(&newID,
uuid.NewV4(),
o.Type,
o.Name,
o.Subject,
o.FromEmail,
@ -228,7 +245,6 @@ func handleCreateCampaign(c echo.Context) error {
// Hand over to the GET handler to return the last insertion.
c.SetParamNames("id")
c.SetParamValues(fmt.Sprintf("%d", newID))
return handleGetCampaigns(c)
}
@ -265,8 +281,10 @@ func handleUpdateCampaign(c echo.Context) error {
return err
}
if err := validateCampaignFields(o, app); err != nil {
if c, err := validateCampaignFields(o, app); err != nil {
return echo.NewHTTPError(http.StatusBadRequest, err.Error())
} else {
o = c
}
res, err := app.Queries.UpdateCampaign.Exec(cm.ID,
@ -457,8 +475,10 @@ func handleTestCampaign(c echo.Context) error {
return err
}
// Validate.
if err := validateCampaignFields(req, app); err != nil {
if c, err := validateCampaignFields(req, app); err != nil {
return echo.NewHTTPError(http.StatusBadRequest, err.Error())
} else {
req = c
}
if len(req.SubscriberEmails) == 0 {
return echo.NewHTTPError(http.StatusBadRequest, "No subscribers to target.")
@ -524,37 +544,39 @@ func sendTestMessage(sub *models.Subscriber, camp *models.Campaign, app *App) er
}
// validateCampaignFields validates incoming campaign field values.
func validateCampaignFields(c campaignReq, app *App) error {
if !regexFromAddress.Match([]byte(c.FromEmail)) {
func validateCampaignFields(c campaignReq, app *App) (campaignReq, error) {
if c.FromEmail == "" {
c.FromEmail = app.Constants.FromEmail
} else if !regexFromAddress.Match([]byte(c.FromEmail)) {
if !govalidator.IsEmail(c.FromEmail) {
return errors.New("invalid `from_email`")
return c, errors.New("invalid `from_email`")
}
}
if !govalidator.IsByteLength(c.Name, 1, stdInputMaxLen) {
return errors.New("invalid length for `name`")
return c, errors.New("invalid length for `name`")
}
if !govalidator.IsByteLength(c.Subject, 1, stdInputMaxLen) {
return errors.New("invalid length for `subject`")
return c, errors.New("invalid length for `subject`")
}
// if !govalidator.IsByteLength(c.Body, 1, bodyMaxLen) {
// return errors.New("invalid length for `body`")
// return c,errors.New("invalid length for `body`")
// }
// If there's a "send_at" date, it should be in the future.
if c.SendAt.Valid {
if c.SendAt.Time.Before(time.Now()) {
return errors.New("`send_at` date should be in the future")
return c, errors.New("`send_at` date should be in the future")
}
}
camp := models.Campaign{Body: c.Body, TemplateBody: tplTag}
if err := c.CompileTemplate(app.Manager.TemplateFuncs(&camp)); err != nil {
return fmt.Errorf("Error compiling campaign body: %v", err)
return c, fmt.Errorf("Error compiling campaign body: %v", err)
}
return nil
return c, nil
}
// isCampaignalMutable tells if a campaign's in a state where it's
@ -564,3 +586,53 @@ func isCampaignalMutable(status string) bool {
status == models.CampaignStatusCancelled ||
status == models.CampaignStatusFinished
}
// makeOptinCampaignMessage makes a default opt-in campaign message body.
func makeOptinCampaignMessage(o campaignReq, app *App) (campaignReq, error) {
if len(o.ListIDs) == 0 {
return o, echo.NewHTTPError(http.StatusBadRequest, "Invalid list IDs.")
}
// Fetch double opt-in lists from the given list IDs.
var lists []models.List
err := app.Queries.GetListsByOptin.Select(&lists, models.ListOptinDouble, pq.Int64Array(o.ListIDs), nil)
if err != nil {
app.Logger.Printf("error fetching lists for optin: %s", pqErrMsg(err))
return o, echo.NewHTTPError(http.StatusInternalServerError,
"Error fetching optin lists.")
}
// No opt-in lists.
if len(lists) == 0 {
return o, echo.NewHTTPError(http.StatusBadRequest,
"No opt-in lists found to create campaign.")
}
// Construct the opt-in URL with list IDs.
var (
listIDs = url.Values{}
listNames = make([]string, 0, len(lists))
)
for _, l := range lists {
listIDs.Add("l", l.UUID)
listNames = append(listNames, l.Name)
}
// optinURLFunc := template.URL("{{ OptinURL }}?" + listIDs.Encode())
optinURLAttr := template.HTMLAttr(fmt.Sprintf(`href="{{ OptinURL }}%s"`, listIDs.Encode()))
// Prepare sample opt-in message for the campaign.
var b bytes.Buffer
if err := app.NotifTpls.ExecuteTemplate(&b, "optin-campaign", struct {
Lists []models.List
OptinURLAttr template.HTMLAttr
}{lists, optinURLAttr}); err != nil {
app.Logger.Printf("error compiling 'optin-campaign' template: %v", err)
return o, echo.NewHTTPError(http.StatusInternalServerError,
"Error compiling opt-in campaign template.")
}
o.Name = "Opt-in campaign " + strings.Join(listNames, ", ")
o.Subject = "Confirm your subscription(s)"
o.Body = b.String()
return o, nil
}

17
email-templates/subscriber-optin-campaign.html Normal file
View File

@ -0,0 +1,17 @@
{{ define "optin-campaign" }}
<p>Hi {{`{{ .Subscriber.FirstName }}`}},</p>
<p>You have been added to the following mailing lists:</p>
<ul>
{{ range $i, $l := .Lists }}
{{ if eq .Type "public" }}
<li>{{ .Name }}</li>
{{ else }}
<li>Private list</li>
{{ end }}
{{ end }}
</ul>
<p>
<a class="button" {{ .OptinURLAttr }} class="button">Confirm subscription(s)</a>
</p>
{{ end }}

19
frontend/src/Campaign.js
View File

@ -259,6 +259,7 @@ class TheFormDef extends React.PureComponent {
values.tags = []
}
values.type = cs.CampaignTypeRegular
values.body = this.props.body
values.content_type = this.props.contentType
@ -398,14 +399,14 @@ class TheFormDef extends React.PureComponent {
}
});
} else {
// eslint-disable-next-line radix
const id = parseInt(p.list_id)
if (id) {
subLists.push(id)
// eslint-disable-next-line radix
const id = parseInt(p.list_id)
if (id) {
subLists.push(id)
}
}
}
}
}
if (this.record) {
this.props.pageTitle(record.name + " / Campaigns")
@ -469,7 +470,8 @@ class TheFormDef extends React.PureComponent {
})(
<Select disabled={this.props.formDisabled} mode="multiple">
{this.props.data[cs.ModelLists].hasOwnProperty("results") &&
[...this.props.data[cs.ModelLists].results].map((v, i) => (
[...this.props.data[cs.ModelLists].results].map((v) =>
(record.type !== cs.CampaignTypeOptin || v.optin === cs.ListOptinDouble) && (
<Select.Option value={v["id"]} key={v["id"]}>
{v["name"]}
</Select.Option>
@ -684,6 +686,11 @@ class Campaign extends React.PureComponent {
>
{this.state.record.status}
</Tag>
{this.state.record.type === cs.CampaignStatusOptin && (
<Tag className="campaign-type" color="geekblue">
{this.state.record.type}
</Tag>
)}
{this.state.record.name}
</h1>
<span className="text-tiny text-grey">

9
frontend/src/Campaigns.js
View File

@ -104,7 +104,14 @@ class Campaigns extends React.PureComponent {
const out = []
out.push(
<div className="name" key={`name-${record.id}`}>
<Link to={`/campaigns/${record.id}`}>{text}</Link>
<Link to={`/campaigns/${record.id}`}>{text}</Link>{" "}
{record.type === cs.CampaignStatusOptin && (
<Tooltip title="Opt-in campaign" placement="top">
<Tag className="campaign-type" color="geekblue">
{record.type}
</Tag>
</Tooltip>
)}
<br />
<span className="text-tiny">{record.subject}</span>
</div>

41
frontend/src/Lists.js
View File

@ -269,7 +269,7 @@ class Lists extends React.PureComponent {
{record.optin === cs.ListOptinDouble && (
<p className="text-small">
<Tooltip title="Send a campaign to unconfirmed subscribers to opt-in">
<Link to={`/campaigns/new?list_id=${record.id}`}>
<Link onClick={ e => { e.preventDefault(); this.makeOptinCampaign(record)} } to={`/campaigns/new?type=optin&list_id=${record.id}`}>
<Icon type="rocket" /> Send opt-in campaign
</Link>
</Tooltip>
@ -396,6 +396,45 @@ class Lists extends React.PureComponent {
})
}
makeOptinCampaign = record => {
this.props
.modelRequest(
cs.ModelCampaigns,
cs.Routes.CreateCampaign,
cs.MethodPost,
{
type: cs.CampaignTypeOptin,
name: "Optin: "+ record.name,
subject: "Confirm your subscriptions",
messenger: "email",
content_type: cs.CampaignContentTypeRichtext,
lists: [record.id]
}
)
.then(resp => {
notification["success"]({
placement: cs.MsgPosition,
message: "Opt-in campaign created",
description: "Opt-in campaign created"
})
// Redirect to the newly created campaign.
this.props.route.history.push({
pathname: cs.Routes.ViewCampaign.replace(
":id",
resp.data.data.id
)
})
})
.catch(e => {
notification["error"]({
placement: cs.MsgPosition,
message: "Error",
description: e.message
})
})
}
handleHideForm = () => {
this.setState({ formType: null })
}

6
frontend/src/constants.js
View File

@ -45,6 +45,12 @@ export const CampaignStatusRunning = "running"
export const CampaignStatusPaused = "paused"
export const CampaignStatusFinished = "finished"
export const CampaignStatusCancelled = "cancelled"
export const CampaignStatusRegular = "regular"
export const CampaignStatusOptin = "optin"
export const CampaignTypeRegular = "regular"
export const CampaignTypeOptin = "optin"
export const CampaignContentTypeRichtext = "richtext"
export const CampaignContentTypeHTML = "html"
export const CampaignContentTypePlain = "plain"

3
models/models.go
View File

@ -35,6 +35,8 @@ const (
CampaignStatusPaused = "paused"
CampaignStatusFinished = "finished"
CampaignStatusCancelled = "cancelled"
CampaignTypeRegular = "regular"
CampaignTypeOptin = "optin"
// List.
ListTypePrivate = "private"
@ -152,6 +154,7 @@ type Campaign struct {
CampaignMeta
UUID string `db:"uuid" json:"uuid"`
Type string `db:"type" json:"type"`
Name string `db:"name" json:"name"`
Subject string `db:"subject" json:"subject"`
FromEmail string `db:"from_email" json:"from_email"`

8
public.go
View File

@ -138,19 +138,17 @@ func handleOptinPage(c echo.Context) error {
}
// Get lists by UUIDs.
if err := app.Queries.GetListsByUUID.Select(&out.Lists, pq.StringArray(out.ListUUIDs)); err != nil {
if err := app.Queries.GetListsByOptin.Select(&out.Lists, models.ListOptinDouble, nil, pq.StringArray(out.ListUUIDs)); err != nil {
app.Logger.Printf("error fetching lists for optin: %s", pqErrMsg(err))
return c.Render(http.StatusInternalServerError, "message",
makeMsgTpl("Error", "",
`Error fetching lists. Please retry.`))
makeMsgTpl("Error", "", `Error fetching lists. Please retry.`))
}
} else {
// Otherwise, get the list of all unconfirmed lists for the subscriber.
if err := app.Queries.GetSubscriberLists.Select(&out.Lists, 0, subUUID, models.SubscriptionStatusUnconfirmed); err != nil {
app.Logger.Printf("error fetching lists for optin: %s", pqErrMsg(err))
return c.Render(http.StatusInternalServerError, "message",
makeMsgTpl("Error", "",
`Error fetching lists. Please retry.`))
makeMsgTpl("Error", "", `Error fetching lists. Please retry.`))
}
}

1
queries.go
View File

@ -43,7 +43,6 @@ type Queries struct {
CreateList *sqlx.Stmt `query:"create-list"`
GetLists *sqlx.Stmt `query:"get-lists"`
GetListsByOptin *sqlx.Stmt `query:"get-lists-by-optin"`
GetListsByUUID *sqlx.Stmt `query:"get-lists-by-uuid"`
UpdateList *sqlx.Stmt `query:"update-list"`
UpdateListsDate *sqlx.Stmt `query:"update-lists-date"`
DeleteLists *sqlx.Stmt `query:"delete-lists"`

9
queries.sql
View File

@ -295,10 +295,11 @@ SELECT COUNT(*) OVER () AS total, lists.*, COUNT(subscriber_lists.subscriber_id)
GROUP BY lists.id ORDER BY lists.created_at OFFSET $2 LIMIT (CASE WHEN $3 = 0 THEN NULL ELSE $3 END);
-- name: get-lists-by-optin
SELECT * FROM lists WHERE optin=$1::list_optin AND id = ANY($2::INT[]) ORDER BY name;
-- name: get-lists-by-uuid
SELECT * FROM lists WHERE uuid = ANY($1::UUID[]) ORDER BY name;
-- Can have a list of IDs or a list of UUIDs.
SELECT * FROM lists WHERE optin=$1::list_optin AND
(CASE WHEN $2::INT[] IS NOT NULL THEN id = ANY($2::INT[])
WHEN $3::UUID[] IS NOT NULL THEN uuid = ANY($3::UUID[])
END) ORDER BY name;
-- name: create-list
INSERT INTO lists (uuid, name, type, optin, tags) VALUES($1, $2, $3, $4, $5) RETURNING id;

5
schema.sql
View File

@ -3,6 +3,7 @@ DROP TYPE IF EXISTS list_optin CASCADE; CREATE TYPE list_optin AS ENUM ('single'
DROP TYPE IF EXISTS subscriber_status CASCADE; CREATE TYPE subscriber_status AS ENUM ('enabled', 'disabled', 'blacklisted');
DROP TYPE IF EXISTS subscription_status CASCADE; CREATE TYPE subscription_status AS ENUM ('unconfirmed', 'confirmed', 'unsubscribed');
DROP TYPE IF EXISTS campaign_status CASCADE; CREATE TYPE campaign_status AS ENUM ('draft', 'running', 'scheduled', 'paused', 'cancelled', 'finished');
DROP TYPE IF EXISTS campaign_type CASCADE; CREATE TYPE campaign_type AS ENUM ('regular', 'optin');
DROP TYPE IF EXISTS content_type CASCADE; CREATE TYPE content_type AS ENUM ('richtext', 'html', 'plain');
-- subscribers
@ -79,6 +80,10 @@ CREATE TABLE campaigns (
status campaign_status NOT NULL DEFAULT 'draft',
tags VARCHAR(100)[],
-- The subscription statuses of subscribers to which a campaign will be sent.
-- For opt-in campaigns, this will be 'unsubscribed'.
type campaign_type DEFAULT 'regular',
-- The ID of the messenger backend used to send this campaign.
messenger TEXT NOT NULL,
template_id INTEGER REFERENCES templates(id) ON DELETE SET DEFAULT DEFAULT 1,