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package main
import (
"flag"
"fmt"
"os"
"github.com/Necoro/feed2imap-go/internal/feed"
"github.com/Necoro/feed2imap-go/internal/imap"
"github.com/Necoro/feed2imap-go/pkg/config"
"github.com/Necoro/feed2imap-go/pkg/log"
"github.com/Necoro/feed2imap-go/pkg/version"
)
// flags
var (
cfgFile string = "config.yml"
cacheFile string = "feed.cache"
printVersion bool = false
dryRun bool = false
buildCache bool = false
verbose bool = false
debug bool = false
)
func init() {
flag.StringVar(&cfgFile, "f", cfgFile, "configuration file")
flag.StringVar(&cacheFile, "c", cacheFile, "cache file")
flag.BoolVar(&printVersion, "version", printVersion, "print version and exit")
flag.BoolVar(&dryRun, "dry-run", dryRun, "do everything short of uploading and writing the cache")
flag.BoolVar(&buildCache, "build-cache", buildCache, "only (re)build the cache; useful after migration or when the cache is lost or corrupted")
flag.BoolVar(&verbose, "v", verbose, "enable verbose output")
flag.BoolVar(&debug, "d", debug, "enable debug output")
}
func processFeed(feed *feed.Feed, client *imap.Client, dryRun bool) {
msgs, err := feed.Messages()
if err != nil {
log.Errorf("Processing items of feed %s: %s", feed.Name, err)
return
}
if dryRun || len(msgs) == 0 {
feed.MarkSuccess()
return
}
folder := client.NewFolder(feed.Target)
if err = client.EnsureFolder(folder); err != nil {
log.Errorf("Creating folder of feed %s: %s", feed.Name, err)
return
}
if err = msgs.Upload(client, folder, feed.Reupload); err != nil {
log.Errorf("Uploading messages of feed %s: %s", feed.Name, err)
return
}
log.Printf("Uploaded %d messages to '%s' @ %s", len(msgs), feed.Name, folder)
feed.MarkSuccess()
}
func run() error {
flag.Parse()
if printVersion {
println("Feed2Imap-Go, " + version.FullVersion())
return nil
}
if debug {
log.SetDebug()
} else if verbose {
log.SetVerbose()
}
log.Printf("Starting up (%s)...", version.FullVersion())
cfg, err := config.Load(cfgFile)
if err != nil {
return err
}
if err = cfg.Validate(); err != nil {
return fmt.Errorf("Configuration invalid: %w", err)
}
state, err := feed.NewState(cfg)
if err != nil {
return err
}
err = state.LoadCache(cacheFile, buildCache)
if err != nil {
return err
}
state.RemoveUndue()
if state.NumFeeds() == 0 {
log.Print("Nothing to do, exiting.")
// nothing to do
return nil
}
if success := state.Fetch(); success == 0 {
return fmt.Errorf("No successful feed fetch.")
}
state.Filter()
var c *imap.Client
if !dryRun && !buildCache {
if c, err = imap.Connect(cfg.Target); err != nil {
return err
}
defer c.Disconnect()
}
if buildCache {
state.Foreach((*feed.Feed).MarkSuccess)
} else {
state.ForeachGo(func(f *feed.Feed) {
processFeed(f, c, dryRun)
})
}
if !dryRun {
if err = state.StoreCache(cacheFile); err != nil {
return err
}
}
return nil
}
func main() {
if err := run(); err != nil {
log.Error(err)
os.Exit(1)
}
}
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