74 lines
1.5 KiB
Go
74 lines
1.5 KiB
Go
package main
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import (
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"archive/zip"
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"io"
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"log/slog"
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"net/http"
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"os"
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"path/filepath"
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)
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var ExportPath = "data/export.zip"
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// Export saves a .zip archive of the data folder to a file.
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func Export(filename string) error {
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file, err := os.Create(filename)
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if err != nil {
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slog.Error("error creating export archive", "error", err)
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return err
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}
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w := zip.NewWriter(file)
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walker := func(path string, info os.FileInfo, err error) error {
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if path == filename || filepath.Ext(path) == ".zip" { //Ignore export file itself and .zip archives
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return nil
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}
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slog.Debug("export crawling", "path", path)
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if err != nil {
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return err
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}
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if info.IsDir() {
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return nil
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}
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file, err := os.Open(path)
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if err != nil {
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return err
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}
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f, err := w.Create(path)
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if err != nil {
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return err
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}
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_, err = io.Copy(f, file)
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if err != nil {
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return err
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}
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return file.Close()
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}
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err = filepath.Walk("data/", walker)
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if err != nil {
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slog.Error("error walking files", "error", err)
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return err
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}
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err = w.Close()
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if err != nil {
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return err
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}
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return file.Close()
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}
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// GetExport returns a .zip archive with contents of the data folder.
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// As a side effect, it creates the file in there.
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func GetExport(w http.ResponseWriter, r *http.Request) {
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err := Export(ExportPath)
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if err != nil {
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slog.Error("error getting export archive", "error", err)
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http.Error(w, "could not export", http.StatusInternalServerError)
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return
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}
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http.ServeFile(w, r, "data/export.zip")
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}
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