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// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
package notify
import (
"encoding/json"
"errors"
"log"
"os"
"path/filepath"
)
// Timeouts are the balloon lifetimes in seconds per urgency, used only when a
// client leaves the choice to the server. 0 means never expires.
type Timeouts struct {
Low int `json:"low"`
Normal int `json:"normal"`
Critical int `json:"critical"`
}
// Config is the daemon's share of ~/.config/notifyd/config.json. The file
// also carries the balloon shell's keys (placement, DND, mute); they are not
// declared here and the decoder ignores them.
type Config struct {
Timeouts Timeouts `json:"timeouts"`
LiveCap int `json:"liveCap"`
HistoryCap int `json:"historyCap"`
}
// DefaultConfig is the behaviour before the file existed.
func DefaultConfig() Config {
return Config{Timeouts: Timeouts{Low: 10, Normal: 10, Critical: 0}, LiveCap: 20, HistoryCap: 20}
}
// ConfigPath is $XDG_CONFIG_HOME/notifyd/config.json, ~/.config when unset.
func ConfigPath() string {
dir, err := os.UserConfigDir()
if err != nil {
dir = filepath.Join(homeDir(), ".config")
}
return filepath.Join(dir, "notifyd", "config.json")
}
// LoadConfig never fails: a hand typo must not stop the daemon. A missing
// file or broken JSON is the defaults; a key of the wrong type keeps its
// default while the rest of the file applies, which is what encoding/json
// does on an UnmarshalTypeError. Out-of-range values clamp.
func LoadConfig(path string) Config {
def := DefaultConfig()
data, err := os.ReadFile(path)
if err != nil {
if !errors.Is(err, os.ErrNotExist) {
log.Printf("notifyd: config: %v", err)
}
return def
}
c := def
if err := json.Unmarshal(data, &c); err != nil {
var typeErr *json.UnmarshalTypeError
if !errors.As(err, &typeErr) {
log.Printf("notifyd: config %s: %v, using defaults", path, err)
return def
}
log.Printf("notifyd: config %s: %v", path, err)
}
c.LiveCap = clamp(c.LiveCap, 1, 100)
c.HistoryCap = clamp(c.HistoryCap, 1, 100)
if c.Timeouts.Low < 0 {
c.Timeouts.Low = def.Timeouts.Low
}
if c.Timeouts.Normal < 0 {
c.Timeouts.Normal = def.Timeouts.Normal
}
if c.Timeouts.Critical < 0 {
c.Timeouts.Critical = def.Timeouts.Critical
}
return c
}
func clamp(v, lo, hi int) int {
return min(max(v, lo), hi)
}
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