81 lines
2 KiB
Go
81 lines
2 KiB
Go
package main
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import (
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"bytes"
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"errors"
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"log/slog"
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"os"
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"path"
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"path/filepath"
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"strings"
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"time"
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)
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// ReadFile returns raw contents of a file
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func ReadFile(filename string) ([]byte, error) {
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filename = "data/" + path.Clean(filename) + ".txt" // Does this sanitize the path?
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if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
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return nil, err
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}
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fileContents, err := os.ReadFile(filename)
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if err != nil {
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slog.Error("error reading file",
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"error", err,
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"file", filename)
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return nil, err
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}
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return fileContents, nil
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}
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// SaveFile Writes request's contents to a file
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func SaveFile(filename string, contents []byte) error {
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contents = bytes.TrimSpace(contents)
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filename = "data/" + filename + ".txt"
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if len(contents) == 0 { // Delete empty files
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err := os.Remove(filename)
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slog.Error("error deleting empty file",
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"error", err,
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"file", filename)
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return err
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}
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f, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)
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if err != nil {
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slog.Error("error opening/making file",
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"error", err,
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"file", filename)
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return err
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}
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if _, err := f.Write(contents); err != nil {
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slog.Error("error writing to file",
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"error", err,
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"file", filename)
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return err
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}
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return nil
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}
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// ListFiles returns slice of filenames in a directory without extensions or path
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func ListFiles(directory string) ([]string, error) {
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filenames, err := filepath.Glob("data/" + directory + "/*.txt")
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if err != nil {
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return nil, err
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}
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for i, file := range filenames {
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file, _ := strings.CutSuffix(filepath.Base(file), filepath.Ext(file))
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filenames[i] = file
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}
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return filenames, nil
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}
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// ReadToday runs ReadFile with today's date as filename
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func ReadToday() ([]byte, error) {
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return ReadFile("day/" + time.Now().In(Cfg.Timezone).Format(time.DateOnly))
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}
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// SaveToday runs SaveFile with today's date as filename
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func SaveToday(contents []byte) error {
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return SaveFile("day/"+time.Now().In(Cfg.Timezone).Format(time.DateOnly), contents)
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}
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