Added preview component with preview support for campaigns and templates

campaigns.go

@@ -89,26 +89,26 @@ func handlePreviewCampaign(c echo.Context) error {
 	var (
 		app   = c.Get("app").(*App)
 		id, _ = strconv.Atoi(c.Param("id"))
-		camps models.Campaigns
+		body  = c.FormValue("body")
+
+		camp models.Campaign
 	)
 
 	if id < 1 {
 		return echo.NewHTTPError(http.StatusBadRequest, "Invalid ID.")
 	}
 
-	err := app.Queries.GetCampaigns.Select(&camps, id, "", 0, 1)
+	err := app.Queries.GetCampaignForPreview.Get(&camp, id)
 	if err != nil {
-		return echo.NewHTTPError(http.StatusInternalServerError,
+		if err == sql.ErrNoRows {
-			fmt.Sprintf("Error fetching campaign: %s", pqErrMsg(err)))
-	} else if len(camps) == 0 {
 			return echo.NewHTTPError(http.StatusBadRequest, "Campaign not found.")
 		}
 
-	var (
+		return echo.NewHTTPError(http.StatusInternalServerError,
-		camp = camps[0]
+			fmt.Sprintf("Error fetching campaign: %s", pqErrMsg(err)))
-		sub  models.Subscriber
+	}
-	)
 
+	var sub models.Subscriber
 	// Get a random subscriber from the campaign.
 	if err := app.Queries.GetOneCampaignSubscriber.Get(&sub, camp.ID); err != nil {
 		if err == sql.ErrNoRows {
@@ -126,7 +126,10 @@ func handlePreviewCampaign(c echo.Context) error {
 	}
 
 	// Compile the template.
-	tpl, err := runner.CompileMessageTemplate(`{{ template "content" . }}`, camp.Body)
+	if body == "" {
+		body = camp.Body
+	}
+	tpl, err := runner.CompileMessageTemplate(camp.TemplateBody, body)
 	if err != nil {
 		return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("Error compiling template: %v", err))
 	}

frontend/my/src/Campaign.js

@@ -2,6 +2,7 @@ import React from "react"
 import { Modal, Tabs, Row, Col, Form, Switch, Select, Radio, Tag, Input, Button, Icon, Spin, DatePicker, Popconfirm, notification } from "antd"
 import * as cs from "./constants"
 import Media from "./Media"
+import ModalPreview from "./ModalPreview"
 
 import moment from 'moment'
 import ReactQuill from "react-quill"
@@ -352,6 +353,7 @@ class Campaign extends React.PureComponent {
         record: {},
         contentType: "richtext",
         messengers: [],
+        previewRecord: null,
         body: "",
         currentTab: "form",
         editor: null,
@@ -405,6 +407,10 @@ class Campaign extends React.PureComponent {
         this.setState({ currentTab: tab })
     }
 
+    handlePreview = (record) => {
+        this.setState({ previewRecord: record })
+    }
+
     render() {
         return (
             <section className="content campaign">
@@ -457,7 +463,7 @@ class Campaign extends React.PureComponent {
                             formDisabled={ this.state.formDisabled }
                         />
                         <div className="content-actions">
-                            <p><Button icon="search">Preview</Button></p>
+                            <p><Button icon="search"  onClick={() => this.handlePreview(this.state.record)}>Preview</Button></p>
                         </div>
                     </Tabs.TabPane>
                 </Tabs>
@@ -471,8 +477,19 @@ class Campaign extends React.PureComponent {
                             insertMedia: this.state.editor ? this.state.editor.insertMedia : null,
                             onCancel: this.toggleMedia,
                             onOk: this.toggleMedia
-                    } } />
+                        }} />
                 </Modal>
+
+                { this.state.previewRecord &&
+                    <ModalPreview
+                        title={ this.state.previewRecord.name }
+                        body={ this.state.body }
+                        previewURL={ cs.Routes.PreviewCampaign.replace(":id", this.state.previewRecord.id) }
+                        onCancel={() => {
+                            this.setState({ previewRecord: null })
+                        }}
+                    />
+                }
             </section>
         )
     }

frontend/my/src/Campaigns.js

@@ -4,6 +4,7 @@ import { Row, Col, Button, Table, Icon, Tooltip, Tag, Popconfirm, Progress, Moda
 import dayjs from "dayjs"
 import relativeTime from 'dayjs/plugin/relativeTime' 
 
+import ModalPreview from "./ModalPreview"
 import * as cs from "./constants"
 
 class Campaigns extends React.PureComponent {
@@ -15,6 +16,7 @@ class Campaigns extends React.PureComponent {
         queryParams: "",
         stats: {},
         record: null,
+        previewRecord: null,
         cloneName: "",
         modalWaiting: false
     }
@@ -110,10 +112,16 @@ class Campaigns extends React.PureComponent {
             title: "",
             dataIndex: "actions",
             className: "actions",
-            width: "10%",
+            width: "20%",
             render: (text, record) => {
                 return (
                     <div className="actions">
+                        <Tooltip title="Preview campaign" placement="bottom">
+                            <a role="button" onClick={() => {
+                                this.handlePreview(record)
+                            }}><Icon type="search" /></a>
+                        </Tooltip>
+
                         <Tooltip title="Clone campaign" placement="bottom">
                             <a role="button" onClick={() => {
                                 let r = { ...record, lists: record.lists.map((i) => { return i.id }) }
@@ -352,6 +360,10 @@ class Campaigns extends React.PureComponent {
         })
     }
 
+    handlePreview = (record) => {
+        this.setState({ previewRecord: record })
+    }
+
     render() {
         const pagination = {
             ...this.paginationOptions,
@@ -377,18 +389,15 @@ class Campaigns extends React.PureComponent {
                     pagination={ pagination }
                 />
 
-                { this.state.record &&
+                { this.state.previewRecord &&
-                    <Modal visible={ this.state.record } width="500px"
+                    <ModalPreview
-                        className="clone-campaign-modal"
+                        title={ this.state.previewRecord.name }
-                        title={ "Clone " + this.state.record.name}
+                        previewURL={ cs.Routes.PreviewCampaign.replace(":id", this.state.previewRecord.id) }
-                        okText="Clone"
+                        onCancel={() => {
-                        confirmLoading={ this.state.modalWaiting }
+                            this.setState({ previewRecord: null })
-                        onCancel={ this.handleToggleCloneForm }
+                        }}
-                        onOk={() => { this.handleCloneCampaign({ ...this.state.record, name: this.state.cloneName }) }}>
+                    />
-                            <Input autoFocus defaultValue={ this.state.record.name } style={{ width: "100%" }} onChange={(e) => {
+                }
-                                this.setState({ cloneName: e.target.value })
-                            }} />
-                    </Modal> }
             </section>
         )
     }

frontend/my/src/ModalPreview.js

@@ -0,0 +1,54 @@
+import React from "react"
+import { Modal } from "antd"
+import * as cs from "./constants"
+
+class ModalPreview extends React.PureComponent {
+    makeForm(body) {
+        let form = document.createElement("form")
+        form.method = cs.MethodPost
+        form.action = this.props.previewURL
+        form.target = "preview-iframe"
+
+        let input = document.createElement("input")
+        input.type = "hidden"
+        input.name = "body"
+        input.value = body
+        form.appendChild(input)
+        document.body.appendChild(form)
+        form.submit()
+    }
+
+    render () {
+        return (
+            <Modal visible={ true } title={ this.props.title }
+                className="preview-modal"
+                width="90%"
+                height={ 900 }
+                onCancel={ this.props.onCancel }
+                onOk={ this.props.onCancel }>
+                <div className="preview-iframe-container">
+                    <iframe title={ this.props.title ? this.props.title : "Preview" }
+                        name="preview-iframe"
+                        id="preview-iframe"
+                        className="preview-iframe"
+                        ref={(o) => {
+                            if(o) {
+                                // When the DOM reference for the iframe is ready,
+                                // see if there's a body to post with the form hack.
+                                if(this.props.body !== undefined
+                                    && this.props.body !== null) {
+                                    this.makeForm(this.props.body)
+                                }
+                            }
+                        }}
+                        src={ this.props.previewURL ? this.props.previewURL : "about:blank" }>
+                    </iframe>
+ 
+                </div>
+            </Modal>
+
+        )
+    }
+}
+
+export default ModalPreview

frontend/my/src/Templates.js

@@ -1,13 +1,16 @@
 import React from "react"
 import { Row, Col, Modal, Form, Input, Button, Table, Icon, Tooltip, Tag, Popconfirm, Spin, notification } from "antd"
 
+import ModalPreview from "./ModalPreview"
 import Utils from "./utils"
 import * as cs from "./constants"
 
 class CreateFormDef extends React.PureComponent {
     state = {
         confirmDirty: false,
-        modalWaiting: false
+        modalWaiting: false,
+        previewName: "",
+        previewBody: ""
     }
 
     // Handle create / edit form submission.
@@ -50,6 +53,10 @@ class CreateFormDef extends React.PureComponent {
         this.setState({ confirmDirty: this.state.confirmDirty || !!value })
     }
 
+    handlePreview = (name, body) => {
+        this.setState({ previewName: name, previewBody: body })
+    }
+
     render() {
         const { formType, record, onClose } = this.props
         const { getFieldDecorator } = this.props.form
@@ -64,6 +71,7 @@ class CreateFormDef extends React.PureComponent {
         }
 
         return (
+            <div>
                 <Modal visible={ true } title={ formType === cs.FormCreate ? "Add template" : record.name }
                     okText={ this.state.form === cs.FormCreate ? "Add" : "Save" }
                     width="90%"
@@ -82,10 +90,14 @@ class CreateFormDef extends React.PureComponent {
                             </Form.Item>
                             <Form.Item {...formItemLayout} name="body" label="Raw HTML">
                                 {getFieldDecorator("body", { initialValue: record.body ? record.body : "", rules: [{ required: true }] })(
-                                <Input.TextArea autosize={{ minRows: 10, maxRows: 30 }}>
+                                    <Input.TextArea autosize={{ minRows: 10, maxRows: 30 }} />
-                                </Input.TextArea>
                                 )}
                             </Form.Item>
+                            <Form.Item {...formItemLayout} colon={ false } label="&nbsp;">
+                                <Button icon="search"  onClick={ () => 
+                                    this.handlePreview(this.props.form.getFieldValue("name"), this.props.form.getFieldValue("body"))
+                                }>Preview</Button>
+                            </Form.Item>
                         </Form>
                     </Spin>
                     <Row>
@@ -95,6 +107,18 @@ class CreateFormDef extends React.PureComponent {
                         </Col>
                     </Row>
                 </Modal>
+
+                { this.state.previewBody &&
+                    <ModalPreview
+                        title={ this.state.previewName ? this.state.previewName : "Template preview" }
+                        previewURL={ cs.Routes.PreviewTemplate }
+                        body={ this.state.previewBody }
+                        onCancel={() => {
+                            this.setState({ previewBody: null, previewName: null })
+                        }}
+                    />
+                }
+            </div>
         )
     }
 }
@@ -243,17 +267,15 @@ class Templates extends React.PureComponent {
                     fetchRecords = { this.fetchRecords }
                 />
 
-                <Modal visible={ this.state.previewRecord !== null } title={ this.state.previewRecord ? this.state.previewRecord.name : "" }
+                { this.state.previewRecord &&
-                    className="template-preview-modal"
+                    <ModalPreview
-                    width="90%"
+                        title={ this.state.previewRecord.name }
-                    height={ 900 }
+                        previewURL={ cs.Routes.PreviewTemplate.replace(":id", this.state.previewRecord.id) }
-                    onOk={ () => { this.setState({ previewRecord: null }) } }>
+                        onCancel={() => {
-                    { this.state.previewRecord !== null &&
+                            this.setState({ previewRecord: null })
-                        <iframe title="Template preview"
+                        }}
-                                className="template-preview"
+                    />
-                                src={ cs.Routes.PreviewTemplate.replace(":id", this.state.previewRecord.id) }>
+                }
-                        </iframe> }
-                </Modal>
             </section>
         )
     }

frontend/my/src/constants.js

@@ -60,6 +60,7 @@ export const Routes = {
 
     GetSubscribers: "/api/subscribers",
     GetSubscribersByList: "/api/subscribers/lists/:listID",
+    PreviewCampaign: "/api/campaigns/:id/preview",
     CreateSubscriber: "/api/subscribers",
     UpdateSubscriber: "/api/subscribers/:id",
     DeleteSubscriber: "/api/subscribers/:id",
@@ -81,6 +82,7 @@ export const Routes = {
 
     GetTemplates: "/api/templates",
     PreviewTemplate: "/api/templates/:id/preview",
+    PreviewNewTemplate: "/api/templates/preview",
     CreateTemplate: "/api/templates",
     UpdateTemplate: "/api/templates/:id",
     SetDefaultTemplate: "/api/templates/:id/default",

frontend/my/src/index.css

@@ -253,12 +253,15 @@ td.actions {
 .templates .template-body {
   margin-top: 30px;
 }
-  .template-preview {
+  .preview-iframe-container {
+    min-height: 500px;
+  }
+  .preview-iframe {
     border: 0;
     width: 100%;
     height: 100%;
     min-height: 500px;
   }
-  .template-preview-modal .ant-modal-footer button:first-child {
+  .preview-modal .ant-modal-footer button:first-child {
     display: none;
   }

main.go

@@ -103,6 +103,7 @@ func registerHandlers(e *echo.Echo) {
 	e.GET("/api/campaigns/messengers", handleGetCampaignMessengers)
 	e.GET("/api/campaigns/:id", handleGetCampaigns)
 	e.GET("/api/campaigns/:id/preview", handlePreviewCampaign)
+	e.POST("/api/campaigns/:id/preview", handlePreviewCampaign)
 	e.POST("/api/campaigns", handleCreateCampaign)
 	e.PUT("/api/campaigns/:id", handleUpdateCampaign)
 	e.PUT("/api/campaigns/:id/status", handleUpdateCampaignStatus)
@@ -115,6 +116,7 @@ func registerHandlers(e *echo.Echo) {
 	e.GET("/api/templates", handleGetTemplates)
 	e.GET("/api/templates/:id", handleGetTemplates)
 	e.GET("/api/templates/:id/preview", handlePreviewTemplate)
+	e.POST("/api/templates/preview", handlePreviewTemplate)
 	e.POST("/api/templates", handleCreateTemplate)
 	e.PUT("/api/templates/:id", handleUpdateTemplate)
 	e.PUT("/api/templates/:id/default", handleTemplateSetDefault)

queries.go

@@ -27,6 +27,7 @@ type Queries struct {
 
 	CreateCampaign           *sqlx.Stmt `query:"create-campaign"`
 	GetCampaigns             *sqlx.Stmt `query:"get-campaigns"`
+	GetCampaignForPreview    *sqlx.Stmt `query:"get-campaign-for-preview"`
 	GetCampaignStats         *sqlx.Stmt `query:"get-campaign-stats"`
 	NextCampaigns            *sqlx.Stmt `query:"next-campaigns"`
 	NextCampaignSubscribers  *sqlx.Stmt `query:"next-campaign-subscribers"`

queries.sql

@@ -161,8 +161,7 @@ ORDER BY created_at DESC OFFSET $3 LIMIT $4;
 SELECT campaigns.*, COALESCE(templates.body, (SELECT body FROM templates WHERE is_default = true LIMIT 1)) AS template_body
 FROM campaigns
 LEFT JOIN templates ON (templates.id = campaigns.template_id)
-WHERE (status='running' OR (status='scheduled' AND campaigns.send_at >= NOW()))
+WHERE campaigns.id = $1;
-AND NOT(campaigns.id = ANY($1::INT[]))
 
 -- name: get-campaign-stats
 SELECT id, status, to_send, sent, started_at, updated_at

subscribers.go

@@ -49,7 +49,6 @@ func handleGetSubscriber(c echo.Context) error {
 		id, _ = strconv.Atoi(c.Param("id"))
 	)
 
-	// Fetch one list.
 	if id < 1 {
 		return echo.NewHTTPError(http.StatusBadRequest, "Invalid subscriber ID.")
 	}

templates.go

@@ -66,9 +66,12 @@ func handlePreviewTemplate(c echo.Context) error {
 	var (
 		app   = c.Get("app").(*App)
 		id, _ = strconv.Atoi(c.Param("id"))
+		body  = c.FormValue("body")
+
 		tpls []models.Template
 	)
 
+	if body == "" {
 		if id < 1 {
 			return echo.NewHTTPError(http.StatusBadRequest, "Invalid ID.")
 		}
@@ -82,10 +85,11 @@ func handlePreviewTemplate(c echo.Context) error {
 		if len(tpls) == 0 {
 			return echo.NewHTTPError(http.StatusBadRequest, "Template not found.")
 		}
-	t := tpls[0]
+		body = tpls[0].Body
+	}
 
 	// Compile the template.
-	tpl, err := runner.CompileMessageTemplate(t.Body, dummyTpl)
+	tpl, err := runner.CompileMessageTemplate(body, dummyTpl)
 	if err != nil {
 		return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("Error compiling template: %v", err))
 	}