feat: inital commit

- added template subcmd which generates frc project templates

cmd/template/store.go

@@ -0,0 +1,145 @@
+package template
+
+import (
+	"context"
+	"errors"
+	"io/fs"
+	"log/slog"
+	"net/http"
+	"os"
+	"path/filepath"
+	"rph/state"
+
+	"github.com/charmbracelet/bubbles/progress"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/mholt/archives"
+)
+
+const dataFile = "templates.bin"
+const zipFile = "templates.zip"
+
+func saveArchiveVersion(version string) error {
+	return os.WriteFile(
+		filepath.Join(state.CachePath, dataFile),
+		[]byte(version),
+		0644,
+	)
+}
+
+func LoadArchiveVersion() (string, error) {
+	data, err := os.ReadFile(filepath.Join(state.CachePath, dataFile))
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}
+
+func downloadFile(url string) error {
+	var progressBar = true
+
+	// Create the file
+	out, err := os.Create(filepath.Join(state.CachePath, zipFile))
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	// Get the data
+	resp, err := http.Get(url)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+
+	if resp.ContentLength <= 0 {
+		slog.Warn("Can't parse content length, no progress bar will be shown.")
+		progressBar = false
+	}
+
+	var p *tea.Program
+	pw := &progressWriter{
+		total:  int(resp.ContentLength),
+		file:   out,
+		reader: resp.Body,
+		onProgress: func(ratio float64) {
+			p.Send(progressMsg(ratio))
+		},
+	}
+
+	m := downloadModel{
+		pw:       pw,
+		progress: progress.New(progress.WithDefaultGradient()),
+	}
+	p = tea.NewProgram(m)
+
+	// start the download
+	go pw.Start()
+
+	if progressBar {
+		if _, err := p.Run(); err != nil {
+			slog.Error("Error starting the progress bar", "error", err)
+		}
+	}
+
+	return err
+}
+
+func OpenArchive(ctx context.Context) (fsys fs.FS, err error) {
+	fsys, err = archives.FileSystem(ctx, filepath.Join(state.CachePath, zipFile), nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return fsys, nil
+}
+
+func GetLangs() ([]string, error) {
+	var langs []string
+	fsys, err := OpenArchive(context.Background())
+	if err != nil {
+		slog.Error("Failed to open archive", "err", err)
+		return nil, err
+	}
+
+	entries, err := fs.ReadDir(fsys, ".")
+	if err != nil {
+		slog.Error("No files found in fsys", "err", err)
+		return nil, err
+	}
+
+	for _, entry := range entries {
+		if entry.IsDir() {
+			langs = append(langs, entry.Name())
+		}
+	}
+
+	return langs, nil
+}
+
+func GetProjects(lang string) ([]string, error) {
+	var projects []string
+	if lang == "" {
+		return nil, errors.New("lang must be set")
+	}
+
+	fsys, err := OpenArchive(context.Background())
+	if err != nil {
+		slog.Error("Failed to open archive", "err", err)
+		return nil, err
+	}
+
+	entries, err := fs.ReadDir(fsys, filepath.Join(".", lang))
+	if err != nil {
+		slog.Error("No files found in fsys", "err", err)
+		return nil, err
+	}
+
+	for _, entry := range entries {
+		if entry.IsDir() {
+			projects = append(projects, entry.Name())
+		}
+	}
+
+	return projects, nil
+}