Adding upstream version 0.8.9.

Signed-off-by: Daniel Baumann <daniel@debian.org>

pkg/services/mattermost/mattermost_config.go

@@ -0,0 +1,121 @@
+package mattermost
+
+import (
+	"errors"
+	"fmt"
+	"net/url"
+	"strings"
+
+	"github.com/nicholas-fedor/shoutrrr/pkg/format"
+	"github.com/nicholas-fedor/shoutrrr/pkg/services/standard"
+	"github.com/nicholas-fedor/shoutrrr/pkg/types"
+)
+
+// Scheme is the identifying part of this service's configuration URL.
+const Scheme = "mattermost"
+
+// Static errors for configuration validation.
+var (
+	ErrNotEnoughArguments = errors.New(
+		"the apiURL does not include enough arguments, either provide 1 or 3 arguments (they may be empty)",
+	)
+)
+
+// ErrorMessage represents error events within the Mattermost service.
+type ErrorMessage string
+
+// Config holds all configuration information for the Mattermost service.
+type Config struct {
+	standard.EnumlessConfig
+	UserName   string `desc:"Override webhook user"                                             optional:"" url:"user"`
+	Icon       string `desc:"Use emoji or URL as icon (based on presence of http(s):// prefix)" optional:""                 default:""   key:"icon,icon_emoji,icon_url"`
+	Title      string `desc:"Notification title, optionally set by the sender (not used)"                                   default:""   key:"title"`
+	Channel    string `desc:"Override webhook channel"                                          optional:"" url:"path2"`
+	Host       string `desc:"Mattermost server host"                                                        url:"host,port"`
+	Token      string `desc:"Webhook token"                                                                 url:"path1"`
+	DisableTLS bool   `                                                                                                     default:"No" key:"disabletls"`
+}
+
+// CreateConfigFromURL creates a new Config instance from a URL representation.
+func CreateConfigFromURL(url *url.URL) (*Config, error) {
+	config := &Config{}
+	if err := config.SetURL(url); err != nil {
+		return nil, err
+	}
+
+	return config, nil
+}
+
+// GetURL returns a URL representation of the Config's current field values.
+func (c *Config) GetURL() *url.URL {
+	resolver := format.NewPropKeyResolver(c)
+
+	return c.getURL(&resolver) // Pass pointer to resolver
+}
+
+// SetURL updates the Config from a URL representation of its field values.
+func (c *Config) SetURL(url *url.URL) error {
+	resolver := format.NewPropKeyResolver(c)
+
+	return c.setURL(&resolver, url) // Pass pointer to resolver
+}
+
+// getURL constructs a URL from the Config's fields using the provided resolver.
+func (c *Config) getURL(resolver types.ConfigQueryResolver) *url.URL {
+	paths := []string{"", c.Token, c.Channel}
+	if c.Channel == "" {
+		paths = paths[:2]
+	}
+
+	var user *url.Userinfo
+	if c.UserName != "" {
+		user = url.User(c.UserName)
+	}
+
+	return &url.URL{
+		User:       user,
+		Host:       c.Host,
+		Path:       strings.Join(paths, "/"),
+		Scheme:     Scheme,
+		ForceQuery: false,
+		RawQuery:   format.BuildQuery(resolver),
+	}
+}
+
+// setURL updates the Config from a URL using the provided resolver.
+func (c *Config) setURL(resolver types.ConfigQueryResolver, url *url.URL) error {
+	c.Host = url.Host
+	c.UserName = url.User.Username()
+
+	if err := c.parsePath(url); err != nil {
+		return err
+	}
+
+	for key, vals := range url.Query() {
+		if err := resolver.Set(key, vals[0]); err != nil {
+			return fmt.Errorf("setting query parameter %q to %q: %w", key, vals[0], err)
+		}
+	}
+
+	return nil
+}
+
+// parsePath extracts Token and Channel from the URL path and validates arguments.
+func (c *Config) parsePath(url *url.URL) error {
+	path := strings.Split(strings.Trim(url.Path, "/"), "/")
+	isDummy := url.String() == "mattermost://dummy@dummy.com"
+
+	if !isDummy && (len(path) < 1 || path[0] == "") {
+		return ErrNotEnoughArguments
+	}
+
+	if len(path) > 0 && path[0] != "" {
+		c.Token = path[0]
+	}
+
+	if len(path) > 1 && path[1] != "" {
+		c.Channel = path[1]
+	}
+
+	return nil
+}