diff options
Diffstat (limited to 'main.go')
| -rw-r--r-- | main.go | 34 |
1 files changed, 21 insertions, 13 deletions
@@ -16,15 +16,17 @@ var cfgFile = flag.String("f", "config.yml", "configuration file") var cacheFile = flag.String("c", "feed.cache", "cache file") var verbose = flag.Bool("v", false, "enable verbose output") var debug = flag.Bool("d", false, "enable debug output") +var dryRun = flag.Bool("dry-run", false, "do everything short of uploading and writing the cache") +var buildCache = flag.Bool("build-cache", false, "only (re)build the cache; useful after migration or when the cache is lost or corrupted") -func processFeed(feed *feed.Feed, cfg *config.Config, client *imap.Client) { +func processFeed(feed *feed.Feed, cfg *config.Config, client *imap.Client, dryRun bool) { mails, err := feed.ToMails(cfg) if err != nil { log.Errorf("Processing items of feed %s: %s", feed.Name, err) return } - if len(mails) == 0 { + if dryRun || len(mails) == 0 { feed.MarkSuccess() return } @@ -66,7 +68,7 @@ func run() error { state := feed.NewState(cfg) - err = state.LoadCache(*cacheFile) + err = state.LoadCache(*cacheFile, *buildCache) if err != nil { return err } @@ -89,19 +91,25 @@ func run() error { return fmt.Errorf("parsing 'target': %w", err) } - c, err := imap.Connect(imapUrl) - if err != nil { - return err - } + var c *imap.Client + if !*dryRun && !*buildCache { + if c, err = imap.Connect(imapUrl); err != nil { + return err + } - defer c.Disconnect() + defer c.Disconnect() + } - state.ForeachGo(func(f *feed.Feed) { - processFeed(f, cfg, c) - }) + if !*buildCache { + state.ForeachGo(func(f *feed.Feed) { + processFeed(f, cfg, c, *dryRun) + }) + } - if err = state.StoreCache(*cacheFile); err != nil { - return err + if !*dryRun { + if err = state.StoreCache(*cacheFile); err != nil { + return err + } } return nil |