Add/edit notifications

main.go

@@ -25,6 +25,7 @@ import (
 	"slices"
 	"sort"
 	"strconv"
+	"strings"
 	"time"
 )
 
@@ -152,6 +153,8 @@ func main() { // {{{
 	service.Register("/configuration", false, false, pageConfiguration)
 	service.Register("/configuration/theme", false, false, actionConfigurationTheme)
 	service.Register("/configuration/timezone", false, false, actionConfigurationTimezone)
+	service.Register("/configuration/notification", false, false, pageConfigurationNotification)
+	service.Register("/configuration/notification/update/{prio}", false, false, actionConfigurationNotificationUpdate)
 	service.Register("/entry/{datapoint}", false, false, actionEntryDatapoint)
 
 	go nodataLoop()
@@ -379,9 +382,9 @@ func getPage(layout, page string) (tmpl *template.Template, err error) { // {{{
 	filenames = append(filenames, componentFilenames...)
 	logger.Info("template", "op", "parse", "layout", layout, "page", page, "filenames", filenames)
 	if flagDev {
-		tmpl, err = template.New("main.gotmpl").Funcs(funcMap).ParseFS(os.DirFS("."), filenames...)
+		tmpl, err = template.New(layout+".gotmpl").Funcs(funcMap).ParseFS(os.DirFS("."), filenames...)
 	} else {
-		tmpl, err = template.New("main.gotmpl").Funcs(funcMap).ParseFS(viewFS, filenames...)
+		tmpl, err = template.New(layout+".gotmpl").Funcs(funcMap).ParseFS(viewFS, filenames...)
 	}
 	if err != nil {
 		err = werr.Wrap(err).Log()
@@ -1037,6 +1040,8 @@ func pageConfiguration(w http.ResponseWriter, r *http.Request, _ *session.T) { /
 		CONFIG: smonConfig.Settings,
 		Data: map[string]any{
 			"Areas":                areas,
+			"NotificationServices": notificationManager.Services(),
+			"AvailableServices":    notification.AvailableServices(),
 		},
 	}
 
@@ -1071,3 +1076,105 @@ func actionConfigurationTimezone(w http.ResponseWriter, r *http.Request, _ *sess
 	w.Header().Add("Location", "/configuration")
 	w.WriteHeader(302)
 } // }}}
+func pageConfigurationNotification(w http.ResponseWriter, r *http.Request, _ *session.T) { // {{{
+	// This function is either receiving a type when creating a new service,
+	// or a prio when editing an existing.
+	notificationType := r.URL.Query().Get("type")
+	prioStr := r.URL.Query().Get("prio")
+
+	var service notification.Service
+	if notificationType != "" {
+		// Create a new instance of the selected notification type.
+		service = notification.GetInstance(notificationType)
+	} else {
+		// Find the existing service for editing.
+		prio, err := strconv.Atoi(prioStr)
+		if err != nil {
+			httpError(w, werr.Wrap(err).Log())
+			return
+		}
+		service = *notificationManager.GetService(prio)
+	}
+
+	if service == nil {
+		data := struct {
+			typ  string
+			prio string
+		}{notificationType, prioStr}
+		err := fmt.Errorf("Invalid service")
+		pageError(w, "/configuration", werr.Wrap(err).WithData(data).Log())
+		return
+	}
+
+	// Make it easier for the user by initiating the prio field
+	// for new notifications to the highest prio + 1.
+	if notificationType != "" {
+		prio := 0
+		for _, svc := range notificationManager.Services() {
+			prio = max(prio, svc.GetPrio()+1)
+		}
+		service.SetPrio(prio)
+	}
+
+	page := Page{
+		LAYOUT: "notification",
+		PAGE:   "notification/" + strings.ToLower(service.GetType()),
+		CONFIG: smonConfig.Settings,
+		Data: map[string]any{
+			"Service": service,
+		},
+	}
+
+	page.Render(w, r)
+} // }}}
+func actionConfigurationNotificationUpdate(w http.ResponseWriter, r *http.Request, _ *session.T) { // {{{
+	prioStr := r.PathValue("prio")
+	prio, err := strconv.Atoi(prioStr)
+	if err != nil {
+		pageError(w, "/configuration", werr.Wrap(err).Log())
+		return
+	}
+
+	// prio -1 means a new service, not existing in database.
+	var svc *notification.Service
+	if prio == -1 {
+		emptyService := notification.GetInstance(r.PostFormValue("type"))
+		svc = &emptyService
+	} else {
+		svc = notificationManager.GetService(prio)
+		if svc == nil {
+			pageError(w, "/configuration", werr.New("Service with prio %d not found", prio).Log())
+			return
+		}
+	}
+
+	// The service is given all data to give it a chance to
+	// validate and throwing errors.
+	err = r.ParseForm()
+	if err != nil {
+		pageError(w, "/configuration", werr.Wrap(err).Log())
+		return
+	}
+
+	err = (*svc).Update(r.PostForm)
+	if err != nil {
+		pageError(w, "/configuration", werr.Wrap(err).Log())
+		return
+	}
+
+	var created bool
+	created, err = UpdateNotificationService(*svc)
+	if err != nil {
+		pageError(w, "/configuration", werr.Wrap(err).Log())
+		return
+	}
+
+	(*svc).Commit()
+
+	if created {
+		notificationManager.AddService(*svc)
+	}
+
+	w.Header().Add("Location", "/configuration")
+	w.WriteHeader(302)
+} // }}}

notification/factory.go

@@ -6,6 +6,12 @@ import (
 
 	// Standard
 	"log/slog"
+	"slices"
+	"strings"
+)
+
+var (
+	allServices []Service
 )
 
 func ServiceFactory(t string, config []byte, prio int, ackURL string, logger *slog.Logger) (Service, error) {
@@ -30,3 +36,25 @@ func ServiceFactory(t string, config []byte, prio int, ackURL string, logger *sl
 
 	return nil, werr.New("Unknown notification service, '%s'", t).WithCode("002-0000")
 }
+
+func GetInstance(typ string) Service {
+	for _, svc := range allServices {
+		if strings.ToLower(svc.GetType()) == strings.ToLower(typ) {
+			return svc
+		}
+	}
+	return nil
+}
+
+func AvailableServices() []Service {
+	slices.SortFunc(allServices, func(a, b Service) int {
+		if a.GetType() < b.GetType() {
+			return -1
+		}
+		if a.GetType() > b.GetType() {
+			return 1
+		}
+		return 0
+	})
+	return allServices
+}

notification/ntfy.go

@@ -11,6 +11,9 @@ import (
 	"io"
 	"log/slog"
 	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
 )
 
 type NTFY struct {
@@ -18,6 +21,13 @@ type NTFY struct {
 	Prio           int
 	AcknowledgeURL string
 	logger         *slog.Logger
+
+	exists  bool
+	updated Service
+}
+
+func init() {
+	allServices = append(allServices, &NTFY{})
 }
 
 func NewNTFY(config []byte, prio int, ackURL string) (instance *NTFY, err error) {
@@ -44,6 +54,22 @@ func (ntfy *NTFY) GetPrio() int {
 	return ntfy.Prio
 }
 
+func (ntfy *NTFY) SetPrio(prio int) {
+	ntfy.Prio = prio
+}
+
+func (ntfy *NTFY) SetExists(exists bool) {
+	ntfy.exists = exists
+}
+
+func (ntfy NTFY) Exists() bool {
+	return ntfy.exists
+}
+
+func (ntfy *NTFY) String() string {
+	return ntfy.URL
+}
+
 func (ntfy NTFY) Send(problemID int, msg []byte) (err error) {
 	var req *http.Request
 	var res *http.Response
@@ -81,3 +107,40 @@ func (ntfy NTFY) Send(problemID int, msg []byte) (err error) {
 
 	return
 }
+
+func (ntfy *NTFY) Update(values url.Values) (err error) {
+	updated := NTFY{}
+	ntfy.updated = &updated
+
+	updated.Prio, err = strconv.Atoi(values.Get("prio"))
+	if err != nil {
+		return werr.Wrap(err)
+	}
+
+	givenURL := values.Get("url")
+	if strings.TrimSpace(givenURL) == "" {
+		return werr.New("URL cannot be empty")
+	}
+	updated.URL = strings.TrimSpace(givenURL)
+	return
+}
+
+func (ntfy *NTFY) Updated() Service {
+	return ntfy.updated
+}
+
+func (ntfy *NTFY) Commit() {
+	updatedNTFY := ntfy.updated.(*NTFY)
+	ntfy.Prio = updatedNTFY.Prio
+	ntfy.URL = updatedNTFY.URL
+}
+
+func (ntfy NTFY) JSON() []byte {
+	data := struct {
+		URL string `json:"url"`
+	}{
+		ntfy.URL,
+	}
+	j, _ := json.Marshal(data)
+	return j
+}

notification/pkg.go

@@ -6,6 +6,7 @@ import (
 
 	// Standard
 	"log/slog"
+	"net/url"
 	"slices"
 )
 
@@ -13,7 +14,15 @@ type Service interface {
 	SetLogger(*slog.Logger)
 	GetPrio() int
 	GetType() string
+	SetPrio(int)
+	SetExists(bool) // Exists in database
+	Exists() bool   // Exists in database
+	String() string
 	Send(int, []byte) error
+	Update(url.Values) error
+	Updated() Service
+	Commit()
+	JSON() []byte
 }
 
 type Manager struct {
@@ -28,6 +37,7 @@ func NewManager(logger *slog.Logger) (nm Manager) {
 }
 
 func (nm *Manager) AddService(service Service) {
+	service.SetExists(true)
 	nm.services = append(nm.services, service)
 	slices.SortFunc(nm.services, func(a, b Service) int {
 		if a.GetPrio() < b.GetPrio() {
@@ -40,6 +50,16 @@ func (nm *Manager) AddService(service Service) {
 	})
 }
 
+func (nm *Manager) GetService(prio int) *Service {
+	for _, svc := range nm.services {
+		if svc.GetPrio() == prio {
+			return &svc
+		}
+	}
+
+	return nil
+}
+
 func (nm *Manager) Send(problemID int, msg []byte, fn func(*Service, error)) (err error) {
 	for i, service := range nm.services {
 		nm.logger.Info("notification", "service", service.GetType(), "prio", service.GetPrio())
@@ -61,3 +81,7 @@ func (nm *Manager) Send(problemID int, msg []byte, fn func(*Service, error)) (er
 
 	return
 }
+
+func (nm *Manager) Services() (services []Service) {
+	return nm.services
+}

notification/script.go

@@ -7,6 +7,7 @@ import (
 	// Standard
 	"encoding/json"
 	"log/slog"
+	"net/url"
 	"os/exec"
 	"strconv"
 	"strings"
@@ -17,6 +18,13 @@ type Script struct {
 	Prio           int
 	AcknowledgeURL string
 	logger         *slog.Logger
+
+	exists  bool
+	updated Service
+}
+
+func init() {
+	allServices = append(allServices, &Script{})
 }
 
 func NewScript(config []byte, prio int, ackURL string) (instance *Script, err error) {
@@ -43,6 +51,22 @@ func (script *Script) GetPrio() int {
 	return script.Prio
 }
 
+func (script *Script) SetPrio(prio int) {
+	script.Prio = prio
+}
+
+func (script *Script) SetExists(exists bool) {
+	script.exists = exists
+}
+
+func (script Script) Exists() bool {
+	return script.exists
+}
+
+func (script *Script) String() string {
+	return script.Filename
+}
+
 func (script Script) Send(problemID int, msg []byte) (err error) {
 	var errbuf strings.Builder
 	cmd := exec.Command(script.Filename, strconv.Itoa(problemID), script.AcknowledgeURL, string(msg))
@@ -68,3 +92,40 @@ func (script Script) Send(problemID int, msg []byte) (err error) {
 
 	return
 }
+
+func (script *Script) Update(values url.Values) (err error) {
+	updated := Script{}
+	updated.Prio, err = strconv.Atoi(values.Get("prio"))
+	if err != nil {
+		return werr.Wrap(err)
+	}
+
+	givenFilename := values.Get("filename")
+	if strings.TrimSpace(givenFilename) == "" {
+		return werr.New("Filename cannot be empty")
+	}
+	updated.Filename = strings.TrimSpace(givenFilename)
+
+	script.updated = &updated
+	return
+}
+
+func (script *Script) Updated() Service {
+	return script.updated
+}
+
+func (script *Script) Commit() {
+	updated := script.updated.(*Script)
+	script.Prio = updated.Prio
+	script.Filename = updated.Filename
+}
+
+func (script Script) JSON() []byte {
+	data := struct {
+		Filename string `json:"filename"`
+	}{
+		script.Filename,
+	}
+	j, _ := json.Marshal(data)
+	return j
+}

notification_manager.go

@@ -3,6 +3,7 @@ package main
 import (
 	// External
 	werr "git.gibonuddevalla.se/go/wrappederror"
+	"github.com/lib/pq"
 
 	// Internal
 	"smon/notification"
@@ -67,6 +68,54 @@ func InitNotificationManager() (nm notification.Manager, err error) { // {{{
 
 	return
 } // }}}
+func UpdateNotificationService(svc notification.Service) (created bool, err error) { // {{{
+	if svc.Exists() {
+		_, err = service.Db.Conn.Exec(
+			`
+			UPDATE public.notification
+			SET
+				prio=$2,
+				configuration=$3
+			WHERE
+				prio=$1
+			`,
+			svc.GetPrio(),
+			svc.Updated().GetPrio(),
+			svc.Updated().JSON(),
+		)
+	} else {
+		_, err = service.Db.Conn.Exec(
+			`
+			INSERT INTO public.notification(prio, configuration, service)
+			VALUES($1, $2, $3)
+
+			`,
+			svc.Updated().GetPrio(),
+			svc.Updated().JSON(),
+			svc.GetType(),
+		)
+		created = true
+	}
+
+	if err != nil {
+		// Check if this is just a duplicated prio, which isn't allowed.
+		pgErr, isPgErr := err.(*pq.Error)
+		if isPgErr && pgErr.Code == "23505" {
+			return false, werr.New("Prio %d is already used by another service", svc.GetPrio())
+		}
+
+		return false, werr.Wrap(err).WithData(
+			struct {
+				Prio          int
+				Configuration []byte
+			}{
+				svc.GetPrio(),
+				svc.JSON(),
+			},
+		)
+	}
+	return
+} // }}}
 
 func AcknowledgeNotification(uuid string) (err error) { // {{{
 	/*

static/css/default_light/configuration.css

@@ -24,3 +24,20 @@
 #areas .area .section.configuration img {
   height: 16px;
 }
+#services {
+  display: grid;
+  grid-template-columns: repeat(3, min-content);
+  gap: 10px 24px;
+  background-color: #2979b8;
+  width: min-content;
+  padding: 16px;
+  border-top-left-radius: 8px;
+  border-top-right-radius: 8px;
+  margin-top: 16px;
+}
+#services .header {
+  font-weight: bold;
+}
+#services div {
+  white-space: nowrap;
+}

static/css/default_light/default_light.css

@@ -43,7 +43,8 @@ button:focus {
 #datapoints,
 #problems-list,
 #acknowledged-list,
-#values {
+#values,
+#services {
   background-color: #fff !important;
   border: 1px solid #ddd;
   box-shadow: 5px 5px 8px 0px rgba(0, 0, 0, 0.25);

static/css/default_light/gruvbox.css

@@ -4,3 +4,9 @@ body {
 #areas .area {
   box-shadow: 5px 5px 15px 0px rgba(0, 0, 0, 0.5);
 }
+#page-error {
+  border: unset;
+  color: #fff;
+  background-color: #a00;
+  text-align: center;
+}

static/css/gruvbox/configuration.css

@@ -24,3 +24,20 @@
 #areas .area .section.configuration img {
   height: 16px;
 }
+#services {
+  display: grid;
+  grid-template-columns: repeat(3, min-content);
+  gap: 10px 24px;
+  background-color: #333;
+  width: min-content;
+  padding: 16px;
+  border-top-left-radius: 8px;
+  border-top-right-radius: 8px;
+  margin-top: 16px;
+}
+#services .header {
+  font-weight: bold;
+}
+#services div {
+  white-space: nowrap;
+}

static/css/gruvbox/default_light.css

@@ -43,7 +43,8 @@ button:focus {
 #datapoints,
 #problems-list,
 #acknowledged-list,
-#values {
+#values,
+#services {
   background-color: #fff !important;
   border: 1px solid #ddd;
   box-shadow: 5px 5px 8px 0px rgba(0, 0, 0, 0.25);

static/css/gruvbox/gruvbox.css

@@ -4,3 +4,9 @@ body {
 #areas .area {
   box-shadow: 5px 5px 15px 0px rgba(0, 0, 0, 0.5);
 }
+#page-error {
+  border: unset;
+  color: #fff;
+  background-color: #a00;
+  text-align: center;
+}

static/less/configuration.less

@@ -36,3 +36,23 @@
 		}
 	}
 }
+
+#services {
+	display: grid;
+	grid-template-columns: repeat(3, min-content);
+	gap: 10px 24px;
+	background-color: @bg3;
+	width: min-content;
+	padding: 16px;
+	border-top-left-radius: 8px;
+	border-top-right-radius: 8px;
+	margin-top: 16px;
+
+	.header {
+		font-weight: bold;
+	}
+
+	div {
+		white-space: nowrap;
+	}
+}

static/less/default_light.less

@@ -58,7 +58,7 @@ button {
 	}
 }
 
-#datapoints, #problems-list, #acknowledged-list, #values {
+#datapoints, #problems-list, #acknowledged-list, #values, #services {
 	background-color: #fff !important;
 	border: 1px solid #ddd;
 	box-shadow: 5px 5px 8px 0px rgba(0,0,0,0.25);

static/less/gruvbox.less

@@ -9,3 +9,10 @@ body {
 		box-shadow: 5px 5px 15px 0px rgba(0,0,0,0.5);
 	}
 }
+
+#page-error {
+	border: unset;
+	color: #fff;
+	background-color: #a00;
+	text-align: center;
+}

views/layouts/notification.gotmpl

@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+	<head>
+		<meta charset="UTF-8">
+		<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
+		{{ template "fonts" }}
+		<link rel="stylesheet" type="text/css" href="/css/{{ .VERSION }}/{{ .CONFIG.THEME }}/main.css">
+		<link rel="stylesheet" type="text/css" href="/css/{{ .VERSION }}/{{ .CONFIG.THEME }}/{{ .CONFIG.THEME }}.css">
+	</head>
+	<body>
+		<div id="page-error" class="{{ if ne .ERROR "" }}show{{ end }}">
+			<div class="close" onclick="console.log(this.parentElement.classList.remove('show'))">✖</div>
+			{{ .ERROR }}
+		</div>
+		<div id="page">
+			{{ block "page" . }}{{ end }}
+		</div>
+	</body>
+</html>

views/pages/configuration.gotmpl

@@ -62,6 +62,12 @@
 				return
 			location.href = `/section/delete/${id}`
 		}
+
+		function newNotification() {
+			const select = document.getElementById('notification-create-type')
+			const nType = select.value
+			location.href = `/configuration/notification?type=${nType}`
+		}
 	</script>
 
 	{{ block "page_label" . }}{{end}}
@@ -108,4 +114,24 @@
 		<button style="margin-left: 8px;">Update</button>
 	</form>
 
+	<h1>Notifications</h1>
+	<select id="notification-create-type">
+	{{ range .Data.AvailableServices }}
+		<option>{{ .GetType }}</option>
+	{{ end }}
+	</select>
+	<button onclick="newNotification()">Create</button>
+
+	<div id="services">
+		<div class="header">Prio</div>
+		<div class="header">Type</div>
+		<div class="header">Target</div>
+		<div class="line"></div>
+		{{ range .Data.NotificationServices }}
+		<div><a href="/configuration/notification?prio={{ .GetPrio }}">{{ .GetPrio }}</a></div>
+		<div><a href="/configuration/notification?prio={{ .GetPrio }}">{{ .GetType }}</a></div>
+		<div><a href="/configuration/notification?prio={{ .GetPrio }}">{{ .String }}</a></div>
+		{{ end }}
+	</div>
+
 {{ end }}

views/pages/notification/ntfy.gotmpl

@@ -0,0 +1,34 @@
+{{ define "page" }}
+<h1>NTFY</h1>
+<style>
+.grid {
+	display: grid;
+	grid-template-columns: min-content 1fr;
+	grid-gap: 8px 16px;
+	align-items: center;
+	margin-top: 32px;
+}
+
+input[type=number] {
+	width: 64px;
+	padding: 4px;
+}
+
+button {
+	margin-top: 16px;
+}
+</style>
+
+<form action="/configuration/notification/update/{{ if .Data.Service.Exists }}{{ .Data.Service.GetPrio }}{{ else }}-1{{ end }}" method="post">
+	<input type="hidden" name="type" value="NTFY">
+	<div class="grid">
+		<div>Prio:</div>
+		<input type="number" min=0 name="prio" value="{{ .Data.Service.GetPrio }}">
+
+		<div>URL:</div>
+		<input type="text" name="url" value="{{ .Data.Service.URL }}" style="width: 100%">
+
+		<button style="grid-column: 1 / -1; width: min-content;">OK</button>
+	</div>
+</form>
+{{ end }}

views/pages/notification/script.gotmpl

@@ -0,0 +1,34 @@
+{{ define "page" }}
+<h1>Script</h1>
+<style>
+.grid {
+	display: grid;
+	grid-template-columns: min-content 1fr;
+	grid-gap: 8px 16px;
+	align-items: center;
+	margin-top: 32px;
+}
+
+input[type=number] {
+	width: 64px;
+	padding: 4px;
+}
+
+button {
+	margin-top: 16px;
+}
+</style>
+
+<form action="/configuration/notification/update/{{ .Data.Service.GetPrio }}" method="post">
+<input type="hidden" name="type" value="Script">
+	<div class="grid">
+		<div>Prio:</div>
+		<input type="number" min=0 name="prio" value="{{ .Data.Service.GetPrio }}">
+
+		<div>Filename:</div>
+		<input type="text" name="filename" value="{{ .Data.Service.Filename }}" style="width: 100%">
+
+		<button style="grid-column: 1 / -1; width: min-content;">OK</button>
+	</div>
+</form>
+{{ end }}