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package importer
import (
"context"
"fmt"
"log/slog"
"os"
"os/exec"
"path"
"searchix/internal/file"
"searchix/internal/search"
"strconv"
"strings"
"github.com/pkg/errors"
)
type ChannelImporter struct {
DataPath string
Source *Source
SourceFile string
Logger *slog.Logger
indexPath string
}
func (i *ChannelImporter) FetchIfNeeded(parent context.Context) (bool, error) {
ctx, cancel := context.WithTimeout(parent, i.Source.FetchTimeout)
defer cancel()
dest := i.DataPath
before, err := os.Readlink(dest)
if file.NeedNotExist(err) != nil {
return false, errors.WithMessagef(err, "could not call readlink on file %s", dest)
}
i.Logger.Debug("stat before", "name", before)
args := []string{
"--no-build-output",
"--timeout",
strconv.Itoa(int(i.Source.FetchTimeout.Seconds() - 1)),
fmt.Sprintf("<%s/%s>", i.Source.Channel, i.Source.ImportPath),
"--attr",
i.Source.Attribute,
"--out-link",
dest,
}
i.Logger.Debug("nix-build command", "args", args)
cmd := exec.CommandContext(ctx, "nix-build", args...)
out, err := cmd.Output()
if err != nil {
return false, errors.WithMessage(err, "failed to run nix-build (--dry-run)")
}
i.Logger.Debug("nix-build", "output", strings.TrimSpace(string(out)))
outPath := path.Join(dest, i.Source.OutputPath)
i.Logger.Debug(
"checking output path",
"outputPath",
outPath,
"dest",
dest,
"source",
i.Source.OutputPath,
)
after, err := os.Readlink(dest)
if err := file.NeedNotExist(err); err != nil {
return false, errors.WithMessagef(
err,
"failed to stat output file from nix-build, filename: %s",
outPath,
)
}
i.Logger.Debug("stat after", "name", after)
return before != after, nil
}
func (i *ChannelImporter) Import(parent context.Context, indexer *search.WriteIndex) (bool, error) {
if i.Source.OutputPath == "" {
return false, errors.New("no output path specified")
}
filename := path.Join(i.DataPath, i.SourceFile, i.Source.OutputPath)
i.Logger.Debug("preparing import run", "revision", i.Source.Repo.Revision, "filename", filename)
return processOptions(parent, indexer, &importConfig{
IndexPath: i.indexPath,
Source: i.Source,
Filename: filename,
Logger: i.Logger,
})
}
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