98 lines
3.1 KiB
Go
98 lines
3.1 KiB
Go
package main
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import (
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"fmt"
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"io"
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"log"
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"os"
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"sync"
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"time"
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)
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type RssFeed struct {
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Url string
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Id string
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LastSeen time.Time
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fileMutex sync.Mutex
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}
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func (f *RssFeed) UpdateLastSeen() error {
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log.Printf("[%s]: Updating last seen time", f.Id)
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lastSeen, err := f.ReadLastSeen()
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if err != nil {
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return fmt.Errorf("failed to read lastseen file for feed %s: %w", f.Id, err)
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}
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f.LastSeen = lastSeen
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log.Printf("[%s]: Last seen time updated to: %s", f.Id, f.LastSeen)
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return nil
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}
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func (f *RssFeed) ReadLastSeen() (time.Time, error) {
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f.fileMutex.Lock()
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defer f.fileMutex.Unlock()
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lastSeen := time.Now()
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log.Printf("[%s]: Attempting to open lastseen file...", f.Id)
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lastSeenFile, err := os.Open("lastseen" + f.Id)
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if err != nil {
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if os.IsNotExist(err) {
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log.Printf("[%s]: lastseen file does not exist, creating a new one...", f.Id)
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lastSeenFile, err = os.Create("lastseen" + f.Id)
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if err != nil {
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return lastSeen, fmt.Errorf("failed to create lastseen file: %w", err)
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}
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log.Printf("[%s]: Writing current time to lastseen file...", f.Id)
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lastSeenFile.Write([]byte(lastSeen.Format(time.RFC3339)))
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lastSeenFile.Sync()
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log.Printf("[%s]: Successfully created lastseen file with current time.", f.Id)
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return lastSeen, nil
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} else {
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log.Printf("[%s]: Error opening lastseen file: %v", f.Id, err)
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return lastSeen, fmt.Errorf("failed to read lastseen file: %w", err)
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}
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}
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log.Printf("[%s]: Reading contents of lastseen file...", f.Id)
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lastSeenBytes, err := io.ReadAll(lastSeenFile)
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if err != nil {
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log.Printf("[%s]: Error reading lastseen file: %v", f.Id, err)
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return lastSeen, fmt.Errorf("failed to read lastseen file: %w", err)
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}
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log.Printf("[%s]: Parsing lastseen time...", f.Id)
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lastSeen, err = time.Parse(time.RFC3339, string(lastSeenBytes))
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if err != nil {
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log.Printf("[%s]: Error parsing lastseen file: %v", f.Id, err)
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return lastSeen, fmt.Errorf("failed to parse lastseen file: %w", err)
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}
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lastSeenFile.Close()
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log.Printf("[%s]: Last seen time read: %s", f.Id, lastSeen)
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return lastSeen, nil
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}
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func (f *RssFeed) WriteLastSeen(when time.Time) error {
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f.fileMutex.Lock()
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defer f.fileMutex.Unlock()
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log.Printf("[%s]: Attempting to create lastseen file...", f.Id)
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lastSeenFile, err := os.Create("lastseen" + f.Id)
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if err != nil {
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log.Printf("[%s]: Error creating lastseen file: %v", f.Id, err)
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return fmt.Errorf("failed to create lastseen file: %w", err)
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}
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log.Printf("[%s]: Successfully created lastseen file: lastseen%s", f.Id, f.Id)
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log.Printf("[%s]: Writing last seen time to file: %s", f.Id, when.Format(time.RFC3339))
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_, err = lastSeenFile.Write([]byte(when.Format(time.RFC3339)))
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if err != nil {
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log.Printf("[%s]: Error writing to lastseen file: %v", f.Id, err)
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return fmt.Errorf("failed to write to lastseen file: %w", err)
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}
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log.Printf("[%s]: Successfully wrote last seen time to file.", f.Id)
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err = lastSeenFile.Close()
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if err != nil {
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log.Printf("[%s]: Error closing lastseen file: %v", f.Id, err)
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return fmt.Errorf("failed to close lastseen file: %w", err)
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}
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log.Printf("[%s]: Lastseen file closed successfully.", f.Id)
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return nil
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}
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