210 lines
7.0 KiB
Go
210 lines
7.0 KiB
Go
package main
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import (
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"net/http"
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"net/url"
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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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const (
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// stdInputMaxLen is the maximum allowed length for a standard input field.
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stdInputMaxLen = 200
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// defaultPerPage is the default number of results returned in an GET call.
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defaultPerPage = 20
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// maxPerPage is the maximum number of allowed for paginated records.
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maxPerPage = 100
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)
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type okResp struct {
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Data interface{} `json:"data"`
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}
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// pagination represents a query's pagination (limit, offset) related values.
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type pagination struct {
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PerPage int `json:"per_page"`
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Page int `json:"page"`
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Offset int `json:"offset"`
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Limit int `json:"limit"`
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}
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var reUUID = regexp.MustCompile("^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$")
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// registerHandlers registers HTTP handlers.
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func registerHandlers(e *echo.Echo) {
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e.GET("/", handleIndexPage)
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e.GET("/api/config.js", handleGetConfigScript)
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e.GET("/api/dashboard/stats", handleGetDashboardStats)
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e.GET("/api/subscribers/:id", handleGetSubscriber)
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e.GET("/api/subscribers/:id/export", handleExportSubscriberData)
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e.POST("/api/subscribers", handleCreateSubscriber)
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e.PUT("/api/subscribers/:id", handleUpdateSubscriber)
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e.POST("/api/subscribers/:id/optin", handleGetSubscriberSendOptin)
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e.PUT("/api/subscribers/blacklist", handleBlacklistSubscribers)
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e.PUT("/api/subscribers/:id/blacklist", handleBlacklistSubscribers)
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e.PUT("/api/subscribers/lists/:id", handleManageSubscriberLists)
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e.PUT("/api/subscribers/lists", handleManageSubscriberLists)
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e.DELETE("/api/subscribers/:id", handleDeleteSubscribers)
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e.DELETE("/api/subscribers", handleDeleteSubscribers)
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// Subscriber operations based on arbitrary SQL queries.
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// These aren't very REST-like.
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e.POST("/api/subscribers/query/delete", handleDeleteSubscribersByQuery)
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e.PUT("/api/subscribers/query/blacklist", handleBlacklistSubscribersByQuery)
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e.PUT("/api/subscribers/query/lists", handleManageSubscriberListsByQuery)
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e.GET("/api/subscribers", handleQuerySubscribers)
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e.GET("/api/import/subscribers", handleGetImportSubscribers)
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e.GET("/api/import/subscribers/logs", handleGetImportSubscriberStats)
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e.POST("/api/import/subscribers", handleImportSubscribers)
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e.DELETE("/api/import/subscribers", handleStopImportSubscribers)
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e.GET("/api/lists", handleGetLists)
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e.GET("/api/lists/:id", handleGetLists)
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e.POST("/api/lists", handleCreateList)
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e.PUT("/api/lists/:id", handleUpdateList)
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e.DELETE("/api/lists/:id", handleDeleteLists)
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e.GET("/api/campaigns", handleGetCampaigns)
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e.GET("/api/campaigns/running/stats", handleGetRunningCampaignStats)
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e.GET("/api/campaigns/:id", handleGetCampaigns)
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e.GET("/api/campaigns/:id/preview", handlePreviewCampaign)
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e.POST("/api/campaigns/:id/preview", handlePreviewCampaign)
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e.POST("/api/campaigns/:id/test", handleTestCampaign)
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e.POST("/api/campaigns", handleCreateCampaign)
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e.PUT("/api/campaigns/:id", handleUpdateCampaign)
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e.PUT("/api/campaigns/:id/status", handleUpdateCampaignStatus)
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e.DELETE("/api/campaigns/:id", handleDeleteCampaign)
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e.GET("/api/media", handleGetMedia)
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e.POST("/api/media", handleUploadMedia)
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e.DELETE("/api/media/:id", handleDeleteMedia)
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e.GET("/api/templates", handleGetTemplates)
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e.GET("/api/templates/:id", handleGetTemplates)
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e.GET("/api/templates/:id/preview", handlePreviewTemplate)
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e.POST("/api/templates/preview", handlePreviewTemplate)
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e.POST("/api/templates", handleCreateTemplate)
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e.PUT("/api/templates/:id", handleUpdateTemplate)
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e.PUT("/api/templates/:id/default", handleTemplateSetDefault)
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e.DELETE("/api/templates/:id", handleDeleteTemplate)
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// Subscriber facing views.
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e.GET("/subscription/:campUUID/:subUUID", validateUUID(subscriberExists(handleSubscriptionPage),
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"campUUID", "subUUID"))
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e.POST("/subscription/:campUUID/:subUUID", validateUUID(subscriberExists(handleSubscriptionPage),
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"campUUID", "subUUID"))
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e.GET("/subscription/optin/:subUUID", validateUUID(subscriberExists(handleOptinPage), "subUUID"))
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e.POST("/subscription/optin/:subUUID", validateUUID(subscriberExists(handleOptinPage), "subUUID"))
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e.POST("/subscription/export/:subUUID", validateUUID(subscriberExists(handleSelfExportSubscriberData),
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"subUUID"))
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e.POST("/subscription/wipe/:subUUID", validateUUID(subscriberExists(handleWipeSubscriberData),
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"subUUID"))
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e.GET("/link/:linkUUID/:campUUID/:subUUID", validateUUID(handleLinkRedirect,
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"linkUUID", "campUUID", "subUUID"))
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e.GET("/campaign/:campUUID/:subUUID/px.png", validateUUID(handleRegisterCampaignView,
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"campUUID", "subUUID"))
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// Static views.
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e.GET("/lists", handleIndexPage)
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e.GET("/subscribers", handleIndexPage)
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e.GET("/subscribers/lists/:listID", handleIndexPage)
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e.GET("/subscribers/import", handleIndexPage)
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e.GET("/campaigns", handleIndexPage)
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e.GET("/campaigns/new", handleIndexPage)
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e.GET("/campaigns/media", handleIndexPage)
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e.GET("/campaigns/templates", handleIndexPage)
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e.GET("/campaigns/:campignID", handleIndexPage)
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}
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// handleIndex is the root handler that renders the login page if there's no
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// authenticated session, or redirects to the dashboard, if there's one.
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func handleIndexPage(c echo.Context) error {
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app := c.Get("app").(*App)
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b, err := app.FS.Read("/frontend/index.html")
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
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}
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c.Response().Header().Set("Content-Type", "text/html")
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return c.String(http.StatusOK, string(b))
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}
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// validateUUID middleware validates the UUID string format for a given set of params.
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func validateUUID(next echo.HandlerFunc, params ...string) echo.HandlerFunc {
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return func(c echo.Context) error {
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for _, p := range params {
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if !reUUID.MatchString(c.Param(p)) {
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return c.Render(http.StatusBadRequest, "message",
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makeMsgTpl("Invalid request", "",
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`One or more UUIDs in the request are invalid.`))
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}
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}
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return next(c)
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}
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}
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// subscriberExists middleware checks if a subscriber exists given the UUID
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// param in a request.
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func subscriberExists(next echo.HandlerFunc, params ...string) echo.HandlerFunc {
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return func(c echo.Context) error {
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var (
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app = c.Get("app").(*App)
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subUUID = c.Param("subUUID")
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)
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var exists bool
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if err := app.Queries.SubscriberExists.Get(&exists, 0, subUUID); err != nil {
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app.Logger.Printf("error checking subscriber existence: %v", err)
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return c.Render(http.StatusInternalServerError, "message",
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makeMsgTpl("Error", "",
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`Error processing request. Please retry.`))
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}
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if !exists {
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return c.Render(http.StatusBadRequest, "message",
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makeMsgTpl("Not found", "",
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`Subscription not found.`))
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}
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return next(c)
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}
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}
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// getPagination takes form values and extracts pagination values from it.
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func getPagination(q url.Values) pagination {
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var (
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page, _ = strconv.Atoi(q.Get("page"))
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perPage = defaultPerPage
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)
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pp := q.Get("per_page")
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if pp == "all" {
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// No limit.
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perPage = 0
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} else {
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ppi, _ := strconv.Atoi(pp)
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if ppi > 0 && ppi <= maxPerPage {
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perPage = ppi
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}
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}
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if page < 1 {
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page = 0
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} else {
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page--
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}
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return pagination{
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Page: page + 1,
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PerPage: perPage,
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Offset: page * perPage,
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Limit: perPage,
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}
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}
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