form: add pre-signup card

same as the post-signup card, but shown on the sidebar.

api-messages.go

@@ -169,6 +169,7 @@ func (app *appContext) GetCustomMessageTemplate(gc *gin.Context) {
 		case "UserPage":
 		case "UserLogin":
 		case "PostSignupCard":
+		case "PreSignupCard":
 			// These don't have any example content
 			msg = nil
 		}

customcontent.go

@@ -352,9 +352,31 @@ var customContent = map[string]CustomContentInfo{
 			"myAccountURL",
 		),
 		Placeholders: defaultVals(map[string]any{
-			"myAccountURL": "https://sub2.test.url/my/account",
+			"myAccountURL": "https://example.url/my/account",
 		}),
 	},
+	"PreSignupCard": {
+		Name:        "PreSignupCard",
+		ContentType: CustomCard,
+		DisplayName: func(dict *Lang, lang string) string {
+			if _, ok := dict.Admin[lang]; !ok {
+				lang = dict.chosenAdminLang
+			}
+			return dict.Admin[lang].Strings["preSignupCard"]
+		},
+		Description: func(dict *Lang, lang string) string {
+			if _, ok := dict.Admin[lang]; !ok {
+				lang = dict.chosenAdminLang
+			}
+			return dict.Admin[lang].Strings["preSignupCardDescription"]
+		},
+		Variables: []string{
+			"myAccountURL",
+		},
+		Placeholders: map[string]any{
+			"myAccountURL": "https://example.url/my/account",
+		},
+	},
 }
 
 var EmptyCustomContent = CustomContentInfo{

html/form.html

@@ -125,6 +125,11 @@
                         {{ if .fromUser }}
                             <aside class="col aside sm ~positive mb-4" id="invite-from-user" data-from="{{ .fromUser }}">{{ .strings.invitedBy }}</aside>
                         {{ end }}
+                        {{ if .preSignupCard }}
+                            <div class="card @low dark:~d_neutral break-words content">
+                                {{ .preSignupCardContent }}
+                            </div>
+                        {{ end }}
                         <div class="card ~neutral @low mb-4">
                             <span class="label supra">{{ .strings.passwordRequirementsHeader }}</span>
                             <ul>

lang/admin/en-us.json

@@ -155,6 +155,8 @@
         "userPagePage": "User Page: Page",
         "postSignupCard": "Post-signup help card",
         "postSignupCardDescription": "Card shown to user after signing up. Overrides \"Success Message\". Overriden by \"Auto redirect on success\" setting.",
+        "preSignupCard": "Pre-signup help card",
+        "preSignupCardDescription": "Optional card shown on the sign-up page.",
         "buildTime": "Build Time",  
         "builtBy": "Built By",
         "buildTags": "Build Tags",

views.go

@@ -831,6 +831,25 @@ func (app *appContext) InviteProxy(gc *gin.Context) {
 			[]byte(templated), nil, markdownRenderer),
 		)
 	}
+	if msg, ok := app.storage.GetCustomContentKey("PreSignupCard"); ok && msg.Enabled {
+		cci := customContent["PreSignupCard"]
+		data["preSignupCard"] = true
+		// We don't template here, since the username is only known after login.
+		templated, err := templateEmail(
+			msg.Content,
+			cci.Variables,
+			cci.Conditionals,
+			map[string]any{
+				"myAccountURL": userPageAddress,
+			},
+		)
+		if err != nil {
+			app.err.Printf(lm.FailedConstructCustomContent, "PreSignupCard", err)
+		}
+		data["preSignupCardContent"] = template.HTML(markdown.ToHTML(
+			[]byte(templated), nil, markdownRenderer),
+		)
+	}
 
 	// if discordEnabled {
 	// 	pin := ""