/
files.go
120 lines (98 loc) · 2.1 KB
/
files.go
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package main
import (
"bufio"
"errors"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"os"
"path/filepath"
)
var (
ErrNoToken = errors.New("cannot find .token")
)
func (app *App) downloadPhoto(p *photo) (string, error) {
downloadPath := filepath.Join(app.config.ConfigPath, p.ID+"."+app.opts.Extension)
qs := url.Values{
"fm": []string{app.opts.Extension},
"q": []string{fmt.Sprintf("%d", app.opts.Quality)},
"w": []string{app.opts.ScreenWidth},
}
downloadURL, err := joinURLWithQuery(p.URLs.Raw, qs)
if err != nil {
return "", err
}
r, err := http.Get(downloadURL)
if err != nil {
return "", err
}
defer r.Body.Close()
f, err := os.Create(downloadPath)
if err != nil {
return "", err
}
defer f.Close()
_, err = io.Copy(f, r.Body)
if err != nil {
return "", err
}
return downloadPath, nil
}
func (app *App) cleanUnusedFiles(toPreserve string) error {
files, err := os.ReadDir(app.config.ConfigPath)
if err != nil {
return err
}
for _, f := range files {
if f.Name() != toPreserve && f.Name() != ".token" && f.Name() != "credits.txt" {
os.Remove(filepath.Join(app.config.ConfigPath, f.Name()))
}
}
return nil
}
func (app *App) saveTime() error {
out, err := os.Create(filepath.Join(app.config.ConfigPath, app.getCurrentDaytime()))
if err != nil {
return err
}
defer out.Close()
return nil
}
func (app *App) saveCredits(p *photo) error {
f, err := os.Create(filepath.Join(app.config.ConfigPath, "credits.txt"))
if err != nil {
return err
}
defer f.Close()
w := bufio.NewWriter(f)
ls := []string{
"Photo by " + p.User.Name,
p.User.Links.HTML,
}
for _, l := range ls {
_, err := w.WriteString(l + "\n")
if err != nil {
return err
}
}
w.Flush()
return nil
}
func (app *App) showCredits() error {
c, err := ioutil.ReadFile(filepath.Join(app.config.ConfigPath, "credits.txt"))
if err != nil {
return err
}
fmt.Fprintln(os.Stdout, string(c))
return nil
}
func (app *App) shouldRefresh() bool {
f, err := os.Open(filepath.Join(app.config.ConfigPath, app.getCurrentDaytime()))
if err != nil {
return true
}
defer f.Close()
return false
}