48 lines
969 B
Go
48 lines
969 B
Go
package main
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import (
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"math/rand"
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"os"
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"regexp"
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)
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func getRandomFile(dir string) (path string, filename string, error error) {
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files, err := os.ReadDir(dir)
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if err != nil {
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return "", "", err
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}
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// for _, file := range files { fmt.Println(file.Name(), file.IsDir())
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// }
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var randomIndex int
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var randomImg os.DirEntry
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for {
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randomIndex = rand.Intn(len(files))
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randomImg = files[randomIndex]
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//re-roll if you get a directory
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if files[randomIndex].IsDir() == false {
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break
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}
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//re-roll if not a recognised image type
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isImage, _ := regexp.Match(".jpg$|.jpeg$|.png$|.bmp$|.webp$", []byte(randomImg.Name()))
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if isImage {
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break
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}
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}
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return dir + "/" + randomImg.Name(), randomImg.Name(), nil
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}
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func fileExistsInCache(filename string) (bool, error) {
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files, err := os.ReadDir("images")
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if err != nil {
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return false, err
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}
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for _, file := range files {
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if file.Name() == filename {
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return true, nil
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}
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}
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return false, nil
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}
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