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repo_init.go
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repo_init.go
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package main
import (
"context"
"errors"
"fmt"
"github.com/charmbracelet/log"
"go.abhg.dev/gs/internal/git"
"go.abhg.dev/gs/internal/must"
"go.abhg.dev/gs/internal/spice"
"go.abhg.dev/gs/internal/spice/state"
"go.abhg.dev/gs/internal/spice/state/storage"
"go.abhg.dev/gs/internal/text"
"go.abhg.dev/gs/internal/ui"
)
type repoInitCmd struct {
Trunk string `placeholder:"BRANCH" predictor:"branches" help:"Name of the trunk branch"`
Remote string `placeholder:"NAME" predictor:"remotes" help:"Name of the remote to push changes to"`
Reset bool `help:"Forget all information about the repository"`
}
func (*repoInitCmd) Help() string {
return text.Dedent(`
A trunk branch is required.
This is the branch that changes will be merged into.
A prompt will ask for one if not provided with --trunk.
Most branch stacking operations are local
and do not require a network connection.
For operations that push or pull commits, a remote is required.
A prompt will ask for one during initialization
if not provided with --remote.
Re-run the command on an already initialized repository
to change the trunk or remote.
If the trunk branch is changed on re-initialization,
existing branches stacked on the old trunk
will be updated to point to the new trunk.
Re-run with --reset to discard all stored information
and untrack all branches.
`)
}
func (cmd *repoInitCmd) Run(
ctx context.Context,
log *log.Logger,
view ui.View,
repo *git.Repository,
) error {
guesser := spice.Guesser{
Select: func(op spice.GuessOp, opts []string, selected string) (string, error) {
if !ui.Interactive(view) {
return "", errNoPrompt
}
var msg, desc string
switch op {
case spice.GuessRemote:
msg = "Please select a remote"
desc = "Merged changes will be pushed to this remote"
case spice.GuessTrunk:
msg = "Please select the trunk branch"
desc = "Changes will be merged into this branch"
default:
must.Failf("unknown guess operation: %v", op)
}
var result string
prompt := ui.NewSelect[string]().
WithValue(&result).
With(ui.ComparableOptions(selected, opts...)).
WithTitle(msg).
WithDescription(desc)
if err := ui.Run(view, prompt); err != nil {
return "", err
}
return result, nil
},
}
if cmd.Remote == "" {
var err error
cmd.Remote, err = guesser.GuessRemote(ctx, repo)
if err != nil {
return fmt.Errorf("guess remote: %w", err)
}
if cmd.Remote == "" {
log.Warn("No remotes found. Commands that require a remote will fail.")
} else {
log.Infof("Using remote: %v", cmd.Remote)
}
}
if cmd.Trunk == "" {
var err error
cmd.Trunk, err = guesser.GuessTrunk(ctx, repo, cmd.Remote)
if err != nil {
return fmt.Errorf("guess trunk: %w", err)
}
}
must.NotBeBlankf(cmd.Trunk, "trunk branch must have been set")
_, err := state.InitStore(ctx, state.InitStoreRequest{
DB: newRepoStorage(repo, log),
Trunk: cmd.Trunk,
Remote: cmd.Remote,
Reset: cmd.Reset,
})
if err != nil {
return fmt.Errorf("initialize storage: %w", err)
}
log.Info("Initialized repository", "trunk", cmd.Trunk)
return nil
}
const (
_dataRef = "refs/spice/data"
_authorName = "git-spice"
_authorEmail = "git-spice@localhost"
)
func newRepoStorage(repo storage.GitRepository, log *log.Logger) *storage.DB {
return storage.NewDB(storage.NewGitBackend(storage.GitConfig{
Repo: repo,
Ref: _dataRef,
AuthorName: _authorName,
AuthorEmail: _authorEmail,
Log: log,
}))
}
// ensureStore will open the spice data store in the provided Git repository,
// initializing it with `gs repo init` if it hasn't already been initialized.
//
// This allows nearly any other command to work without initialization
// by auto-initializing the repository at that time.
func ensureStore(
ctx context.Context,
repo *git.Repository,
log *log.Logger,
view ui.View,
) (*state.Store, error) {
db := newRepoStorage(repo, log)
store, err := state.OpenStore(ctx, db, log)
if err == nil {
return store, nil
}
if errors.Is(err, state.ErrUninitialized) {
log.Info("Repository not initialized. Initializing.")
if err := (&repoInitCmd{}).Run(ctx, log, view, repo); err != nil {
return nil, fmt.Errorf("auto-initialize: %w", err)
}
// Assume initialization was a success.
return state.OpenStore(ctx, db, log)
}
return nil, fmt.Errorf("open store: %w", err)
}
func ensureRemote(
ctx context.Context,
repo spice.GitRepository,
store *state.Store,
log *log.Logger,
view ui.View,
) (string, error) {
remote, err := store.Remote()
if err == nil {
return remote, nil
}
if !errors.Is(err, state.ErrNotExist) {
return "", fmt.Errorf("get remote: %w", err)
}
// No remote was specified at init time.
// Guess or prompt for one and update the store.
log.Warn("No remote was specified at init time")
remote, err = (&spice.Guesser{
Select: func(_ spice.GuessOp, opts []string, selected string) (string, error) {
if !ui.Interactive(view) {
return "", errNoPrompt
}
result := selected
prompt := ui.NewSelect[string]().
WithValue(&result).
With(ui.ComparableOptions(selected, opts...)).
WithTitle("Please select a remote").
WithDescription("Changes will be pushed to this remote")
if err := ui.Run(view, prompt); err != nil {
return "", err
}
return result, nil
},
}).GuessRemote(ctx, repo)
if err != nil {
return "", fmt.Errorf("guess remote: %w", err)
}
if err := store.SetRemote(ctx, remote); err != nil {
return "", fmt.Errorf("set remote: %w", err)
}
// TODO: this should also update the Forge associated with the spice.Service.
log.Infof("Changed repository remote to %s", remote)
return remote, nil
}