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package ifttt
import (
"errors"
"fmt"
"net/url"
"github.com/nicholas-fedor/shoutrrr/pkg/format"
"github.com/nicholas-fedor/shoutrrr/pkg/services/standard"
"github.com/nicholas-fedor/shoutrrr/pkg/types"
)
const (
Scheme = "ifttt" // Scheme identifies this service in configuration URLs.
DefaultMessageValue = 2 // Default value field (1-3) for the notification message
DisabledValue = 0 // Value to disable title assignment
MinValueField = 1 // Minimum valid value field (Value1)
MaxValueField = 3 // Maximum valid value field (Value3)
MinLength = 1 // Minimum length for required fields like Events and WebHookID
)
var (
ErrInvalidMessageValue = errors.New(
"invalid value for messagevalue: only values 1-3 are supported",
)
ErrInvalidTitleValue = errors.New(
"invalid value for titlevalue: only values 1-3 or 0 (for disabling) are supported",
)
ErrTitleMessageConflict = errors.New("titlevalue cannot use the same number as messagevalue")
ErrMissingEvents = errors.New("events missing from config URL")
ErrMissingWebhookID = errors.New("webhook ID missing from config URL")
)
// Config holds settings for the IFTTT notification service.
type Config struct {
standard.EnumlessConfig
WebHookID string `required:"true" url:"host"`
Events []string `required:"true" key:"events"`
Value1 string ` key:"value1" optional:""`
Value2 string ` key:"value2" optional:""`
Value3 string ` key:"value3" optional:""`
UseMessageAsValue uint8 ` key:"messagevalue" default:"2" desc:"Sets the corresponding value field to the notification message"`
UseTitleAsValue uint8 ` key:"titlevalue" default:"0" desc:"Sets the corresponding value field to the notification title"`
Title string ` key:"title" default:"" desc:"Notification title, optionally set by the sender"`
}
// GetURL generates a URL from the current configuration values.
func (config *Config) GetURL() *url.URL {
resolver := format.NewPropKeyResolver(config)
return config.getURL(&resolver)
}
// SetURL updates the configuration from a URL representation.
func (config *Config) SetURL(url *url.URL) error {
resolver := format.NewPropKeyResolver(config)
return config.setURL(&resolver, url)
}
func (config *Config) getURL(resolver types.ConfigQueryResolver) *url.URL {
return &url.URL{
Host: config.WebHookID,
Path: "/",
Scheme: Scheme,
RawQuery: format.BuildQuery(resolver),
}
}
func (config *Config) setURL(resolver types.ConfigQueryResolver, url *url.URL) error {
if config.UseMessageAsValue == DisabledValue {
config.UseMessageAsValue = DefaultMessageValue
}
config.WebHookID = url.Hostname()
for key, vals := range url.Query() {
if err := resolver.Set(key, vals[0]); err != nil {
return fmt.Errorf("setting config property %q from URL query: %w", key, err)
}
}
if config.UseMessageAsValue > MaxValueField || config.UseMessageAsValue < MinValueField {
return ErrInvalidMessageValue
}
if config.UseTitleAsValue > MaxValueField {
return ErrInvalidTitleValue
}
if config.UseTitleAsValue != DisabledValue &&
config.UseTitleAsValue == config.UseMessageAsValue {
return ErrTitleMessageConflict
}
if url.String() != "ifttt://dummy@dummy.com" {
if len(config.Events) < MinLength {
return ErrMissingEvents
}
if len(config.WebHookID) < MinLength {
return ErrMissingWebhookID
}
}
return nil
}
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