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|
package config
import (
"fmt"
"io/ioutil"
"os"
"os/user"
"runtime"
"runtime/debug"
"strings"
"github.com/Necoro/feed2imap-go/pkg/log"
"github.com/Necoro/feed2imap-go/pkg/util"
)
// Convenience type for the non-mapped configuration options
// Mostly used for legacy options
type Map map[string]interface{}
// Global options, not feed specific
type GlobalOptions struct {
Timeout int `yaml:"timeout"`
DefaultEmail string `yaml:"default-email"`
Target string `yaml:"target"`
Parts []string `yaml:"parts"`
}
// Default global options
var DefaultGlobalOptions = GlobalOptions{
Timeout: 30,
DefaultEmail: username() + "@" + hostname(),
Target: "",
Parts: []string{"text", "html"},
}
// Per feed options
type Options struct {
MinFreq *int `yaml:"min-frequency"`
InclImages *bool `yaml:"include-images"`
Disable *bool `yaml:"disable"`
IgnHash *bool `yaml:"ignore-hash"`
AlwaysNew *bool `yaml:"always-new"`
NoTLS *bool `yaml:"tls-no-verify"`
}
func (opt *Options) mergeFrom(other Options) {
if opt.MinFreq == nil {
opt.MinFreq = other.MinFreq
}
if opt.InclImages == nil {
opt.InclImages = other.InclImages
}
if opt.IgnHash == nil {
opt.IgnHash = other.IgnHash
}
if opt.AlwaysNew == nil {
opt.AlwaysNew = other.AlwaysNew
}
if opt.Disable == nil {
opt.Disable = other.Disable
}
if opt.NoTLS == nil {
opt.NoTLS = other.NoTLS
}
}
// Default feed options
var DefaultFeedOptions Options
func init() {
one := 1
fal := false
DefaultFeedOptions = Options{
MinFreq: &one,
InclImages: &fal,
IgnHash: &fal,
AlwaysNew: &fal,
Disable: &fal,
NoTLS: &fal,
}
}
// Config holds the global configuration options and the configured feeds
type Config struct {
GlobalOptions `yaml:",inline"`
GlobalConfig Map `yaml:",inline"`
FeedOptions Options `yaml:"options"`
Feeds Feeds `yaml:"-"`
}
// WithDefault returns a configuration initialized with default values.
func WithDefault() *Config {
return &Config{
GlobalOptions: DefaultGlobalOptions,
FeedOptions: DefaultFeedOptions,
GlobalConfig: Map{},
Feeds: Feeds{},
}
}
// Validates the configuration against common mistakes
func (cfg *Config) Validate() error {
if cfg.Target == "" {
return fmt.Errorf("No target set!")
}
return nil
}
// Marks whether 'text' part should be included in mails
func (cfg *Config) WithPartText() bool {
return util.StrContains(cfg.Parts, "text")
}
// Marks whether 'html' part should be included in mails
func (cfg *Config) WithPartHtml() bool {
return util.StrContains(cfg.Parts, "html")
}
// Current feed2imap version
func Version() string {
bi, ok := debug.ReadBuildInfo()
if !ok {
return "(unknown)"
}
return bi.Main.Version
}
// Load configuration from file
func Load(path string) (*Config, error) {
log.Printf("Reading configuration file '%s'", path)
buf, err := ioutil.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("while reading '%s': %w", path, err)
}
cfg := WithDefault()
if err = cfg.parse(buf); err != nil {
return nil, fmt.Errorf("while parsing: %w", err)
}
cfg.pushFeedOptions()
return cfg, nil
}
func (cfg *Config) pushFeedOptions() {
for _, feed := range cfg.Feeds {
feed.Options.mergeFrom(cfg.FeedOptions)
}
}
func hostname() (hostname string) {
hostname, err := os.Hostname()
if err != nil {
hostname = "localhost"
}
return
}
func username() string {
u, err := user.Current()
switch {
case err != nil:
return "user"
case runtime.GOOS == "windows":
// the domain is attached -- remove it again
split := strings.Split(u.Username, "\\")
return split[len(split)-1]
default:
return u.Username
}
}
|
