Added Pushover notification

README.md

@@ -120,7 +120,7 @@ Problems can be acknowledged if they are known problems that will not be current
 
 ## Notifications
 
-Smon has a couple of notification services (currently [[https://ntfy.sh|NTFY]] and script).
+Smon has a couple of notification services (currently [[https://ntfy.sh|NTFY]], [[https://pushover.net|Pushover]] and script).
 
 Services are added with a prio. The service with the lowest prio is tried first. \
 If sending through the service fails, the next service is tried and so on until one succeeds.
@@ -134,6 +134,10 @@ What is sent isn't configurable (for now). What is sent is:
 
 An URL is provided to the topic which should receive the notifications.
 
+## Pushover
+
+The user key and API key for the Pushover application is needed. Additionally, a device key can be specified as well.
+
 ## Script
 
 The script service is defined with a filename.
@@ -161,4 +165,4 @@ A couple of small notes on development.
 * Add theme to select tag in `/views/pages/configuration.gotmpl`.
 * Create `/static/less/theme-<theme-name>.less`.
 * Create `/static/less/<theme-name>.less`.
-* Copy a theme directory under `/static/images/` to the new name.
+* Copy a theme directory under `/static/images/` to the new name.

notification/factory.go

@@ -24,6 +24,16 @@ func ServiceFactory(t string, config []byte, prio int, ackURL string, logger *sl
 		}
 		ntfy.SetLogger(logger)
 		return ntfy, nil
+
+	case "PUSHOVER":
+		pushover, err := NewPushover(config, prio, ackURL)
+		if err != nil {
+			err = werr.Wrap(err).WithData(config)
+			return nil, err
+		}
+		pushover.SetLogger(logger)
+		return pushover, nil
+
 	case "SCRIPT":
 		script, err := NewScript(config, prio, ackURL)
 		if err != nil {
@@ -41,6 +51,8 @@ func NewInstance(typ string) Service {
 	switch typ {
 	case "NTFY":
 		return new(NTFY)
+	case "PUSHOVER":
+		return new(Pushover)
 	case "SCRIPT":
 		return new(Script)
 	}

notification/pushover.go

@@ -0,0 +1,183 @@
+package notification
+
+import (
+	// External
+	werr "git.gibonuddevalla.se/go/wrappederror"
+
+	// Standard
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log/slog"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+type Pushover struct {
+	UserKey    string `json:"user_key"`
+	APIKey     string `json:"api_key"`
+	DeviceName string `json:"device_name"`
+
+	Prio           int
+	AcknowledgeURL string
+	logger         *slog.Logger
+
+	exists  bool
+	updated Service
+}
+
+func init() {
+	allServices = append(allServices, &Pushover{})
+}
+
+func NewPushover(config []byte, prio int, ackURL string) (instance *Pushover, err error) {
+	instance = new(Pushover)
+	err = json.Unmarshal(config, &instance)
+	if err != nil {
+		err = werr.Wrap(err).WithData(config)
+		return
+	}
+	instance.Prio = prio
+	instance.AcknowledgeURL = ackURL
+	return instance, nil
+}
+
+func (po *Pushover) SetLogger(l *slog.Logger) {
+	po.logger = l
+}
+
+func (po *Pushover) GetType() string {
+	return "PUSHOVER"
+}
+
+func (po *Pushover) GetPrio() int {
+	return po.Prio
+}
+
+func (po *Pushover) SetPrio(prio int) {
+	po.Prio = prio
+}
+
+func (po *Pushover) SetExists(exists bool) {
+	po.exists = exists
+}
+
+func (po Pushover) Exists() bool {
+	return po.exists
+}
+
+func (po *Pushover) String() string {
+	return fmt.Sprintf("%s, %s", po.UserKey, po.APIKey)
+}
+
+func (po Pushover) Send(problemID int, msg []byte) (err error) {
+	var req *http.Request
+	var res *http.Response
+
+	pushoverRequest, _ := json.Marshal(map[string]string{
+		"token":   po.APIKey,
+		"user":    po.UserKey,
+		"device":  po.DeviceName,
+		"message": string(msg),
+	})
+
+	req, err = http.NewRequest("POST", "https://api.pushover.net/1/messages.json", bytes.NewReader(pushoverRequest))
+	if err != nil {
+		err = werr.Wrap(err).WithData(struct {
+			UserKey string
+			APIKey  string
+			Msg     []byte
+		}{
+			po.UserKey,
+			po.APIKey,
+			msg,
+		},
+		)
+		return
+	}
+
+	//ackURL := fmt.Sprintf("http, OK, %s/notification/ack?problemID=%d", po.AcknowledgeURL, problemID)
+	req.Header.Add("Content-Type", "application/json")
+	res, err = http.DefaultClient.Do(req)
+	if err != nil {
+		err = werr.Wrap(err)
+		return
+	}
+
+	body, _ := io.ReadAll(res.Body)
+	poResp := struct {
+		Status int
+		Errors []string
+	}{}
+	err = json.Unmarshal(body, &poResp)
+	if err != nil {
+		err = werr.Wrap(err).WithData(body)
+		return
+	}
+
+	if poResp.Status != 1 {
+		err = werr.New("%s", strings.Join(poResp.Errors, ", "))
+		return
+	}
+
+	if res.StatusCode != 200 {
+		err = werr.New("Invalid Pushover response").WithData(body)
+		return
+	}
+
+	return
+}
+
+func (po *Pushover) Update(values url.Values) (err error) {
+	updated := Pushover{}
+	po.updated = &updated
+
+	updated.Prio, err = strconv.Atoi(values.Get("prio"))
+	if err != nil {
+		return werr.Wrap(err)
+	}
+
+	givenAPIKey := values.Get("api_key")
+	if strings.TrimSpace(givenAPIKey) == "" {
+		return werr.New("API key cannot be empty")
+	}
+	updated.APIKey = strings.TrimSpace(givenAPIKey)
+
+	givenUserKey := values.Get("user_key")
+	if strings.TrimSpace(givenUserKey) == "" {
+		return werr.New("User key cannot be empty")
+	}
+	updated.UserKey = strings.TrimSpace(givenUserKey)
+
+	updated.DeviceName = strings.TrimSpace(values.Get("device_name"))
+	return
+}
+
+func (po *Pushover) Updated() Service {
+	return po.updated
+}
+
+func (po *Pushover) Commit() {
+	updatedPushover := po.updated.(*Pushover)
+	po.Prio = updatedPushover.Prio
+	po.APIKey = updatedPushover.APIKey
+	po.UserKey = updatedPushover.UserKey
+	po.DeviceName = updatedPushover.DeviceName
+}
+
+func (po Pushover) JSON() []byte {
+	data := struct {
+		APIKey     string `json:"api_key"`
+		UserKey    string `json:"user_key"`
+		DeviceName string `json:"device_name"`
+	}{
+		po.APIKey,
+		po.UserKey,
+		po.DeviceName,
+	}
+	j, _ := json.Marshal(data)
+	return j
+}

sql/00025.sql

@@ -0,0 +1 @@
+ALTER TYPE notification_type ADD VALUE 'PUSHOVER';

views/pages/notification/pushover.gotmpl

@@ -0,0 +1,44 @@
+{{ define "page" }}
+<h1>Pushover</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;
+}
+
+div.grid > div {
+	white-space: nowrap;
+}
+</style>
+
+<form action="/configuration/notification/update/{{ if .Data.Service.Exists }}{{ .Data.Service.GetPrio }}{{ else }}-1{{ end }}" method="post">
+	<input type="hidden" name="type" value="PUSHOVER">
+	<div class="grid">
+		<div>Prio:</div>
+		<input type="number" min=0 name="prio" value="{{ .Data.Service.GetPrio }}">
+
+		<div>User key:</div>
+		<input type="text" name="user_key" value="{{ .Data.Service.UserKey }}" style="width: 100%">
+
+		<div>API (application) key:</div>
+		<input type="text" name="api_key" value="{{ .Data.Service.APIKey }}" style="width: 100%">
+
+		<div>Device name (optional):</div>
+		<input type="text" name="device_name" value="{{ .Data.Service.DeviceName }}" style="width: 100%">
+
+		<button style="grid-column: 1 / -1; width: min-content;">OK</button>
+	</div>
+</form>
+{{ end }}