5 files changed, 270 insertions, 0 deletions
diff --git a/runner/js/indexer.go b/runner/js/indexer.go
new file mode 100644
index 0000000..8a2a6b2
--- /dev/null
+++ b/runner/js/indexer.go
@@ -0,0 +1,39 @@
+package js
+
+import (
+	"encoding/json"
+	"errors"
+	"github.com/ewy1/pik/model"
+	"io/fs"
+	"os"
+	"path/filepath"
+)
+
+type Package struct {
+	Scripts map[string]string `json:"scripts"`
+}
+
+func (n *js) Index(path string, f fs.FS, runners []model.Runner) ([]model.Target, error) {
+	p := &Package{}
+	// are there any other package.jsons? i hope not, because i don't know them
+	content, err := os.ReadFile(filepath.Join(path, "package.json"))
+	if errors.Is(err, fs.ErrNotExist) {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	err = json.Unmarshal(content, p)
+	if err != nil {
+		return nil, err
+	}
+
+	var targets []model.Target
+	if n.Npm == "" {
+		return nil, NoNpm
+	}
+	for k, s := range p.Scripts {
+		targets = append(targets, n.CreateRun(k, s))
+	}
+
+	return targets, nil
+}
diff --git a/runner/js/js.go b/runner/js/js.go
new file mode 100644
index 0000000..7c2af58
--- /dev/null
+++ b/runner/js/js.go
@@ -0,0 +1,106 @@
+package js
+
+import (
+	"errors"
+	"github.com/ewy1/pik/identity"
+	"github.com/ewy1/pik/model"
+	"github.com/ewy1/pik/runner"
+	"os/exec"
+	"path/filepath"
+	"slices"
+)
+
+var jsExtensions = []string{
+	".js",
+	".cjs",
+}
+
+var tsExtensions = []string{
+	".ts",
+}
+
+var extensions = append(jsExtensions, tsExtensions...)
+
+var managers = []string{
+	"pnpm",
+	"yarn",
+	"npm",
+}
+
+var jsInterpreters = []string{
+	"node",
+	"bun",
+}
+
+var tsInterpeters = []string{
+	"ts",
+	"ts-node",
+	"bun",
+}
+
+type js struct {
+	JsInterpreter string
+	TsInterpreter string
+	Npm           string
+}
+
+var Js = &js{}
+
+var UnsupportedFile = errors.New("unsupported file")
+var NoJsInterpreter = errors.New("no js interpreter found in $PATH")
+var NoTsInterpreter = errors.New("no ts interpreter found in $PATH")
+var NoNpm = errors.New("npm not found in $PATH")
+
+func (n *js) Interpreter(file string) (string, error) {
+	ext := filepath.Ext(file)
+	if slices.Contains(jsInterpreters, ext) {
+		if n.JsInterpreter == "" {
+			return "", NoJsInterpreter
+		}
+		return n.JsInterpreter, nil
+	}
+	if slices.Contains(tsInterpeters, ext) {
+		if n.TsInterpreter == "" {
+			return "", NoTsInterpreter
+		}
+		return n.TsInterpreter, nil
+	}
+	return "", UnsupportedFile
+}
+
+func (n *js) Init() error {
+	for _, p := range jsInterpreters {
+		if r, err := exec.LookPath(p); err != nil {
+			n.JsInterpreter = r
+		}
+	}
+	for _, p := range tsInterpeters {
+		if r, err := exec.LookPath(p); err != nil {
+			n.TsInterpreter = r
+		}
+	}
+
+	for _, m := range managers {
+		if r, err := exec.LookPath(m); err == nil {
+			n.Npm = r
+		}
+	}
+
+	return nil
+}
+
+var npmSub = []string{
+	"npm",
+}
+
+func (n *js) CreateRun(name, cmd string) model.Target {
+	return &Npm{
+		BaseTarget: runner.BaseTarget{
+			Identity: identity.New(cmd),
+			MyTags:   model.TagsFromFilename(cmd),
+			MySub:    npmSub,
+		},
+		Name: name,
+		Cmd:  cmd,
+	}
+}
diff --git a/runner/js/runner.go b/runner/js/runner.go
new file mode 100644
index 0000000..8b5f4f1
--- /dev/null
+++ b/runner/js/runner.go
@@ -0,0 +1,28 @@
+package js
+
+import (
+	"github.com/ewy1/pik/identity"
+	"github.com/ewy1/pik/model"
+	"github.com/ewy1/pik/runner"
+	"io/fs"
+	"path/filepath"
+	"slices"
+)
+
+func (n *js) Wants(fs fs.FS, file string, entry fs.DirEntry) (bool, error) {
+	ext := filepath.Ext(entry.Name())
+	return slices.Contains(extensions, ext), nil
+}
+
+func (n *js) CreateTarget(fs fs.FS, source string, file string, entry fs.DirEntry) (model.Target, error) {
+	ext := filepath.Ext(entry.Name())
+	typed := slices.Contains(tsExtensions, ext)
+	return &Script{
+		BaseTarget: runner.BaseTarget{
+			Identity: identity.New(entry.Name()),
+			MyTags:   model.TagsFromFilename(entry.Name()),
+			MySub:    runner.SubFromFile(file),
+		},
+		Typed: typed,
+	}, nil
+}
diff --git a/runner/js/target_npm.go b/runner/js/target_npm.go
new file mode 100644
index 0000000..8319fad
--- /dev/null
+++ b/runner/js/target_npm.go
@@ -0,0 +1,42 @@
+package js
+
+import (
+	"github.com/ewy1/pik/model"
+	"github.com/ewy1/pik/runner"
+	"os/exec"
+	"path/filepath"
+)
+
+type Npm struct {
+	runner.BaseTarget
+	Name string
+	Cmd  string
+}
+
+func (n *Npm) Icon() string {
+	return "\uE60B"
+}
+
+func (n *Npm) Description(src *model.HydratedSource) string {
+	return n.Cmd
+}
+
+func (n *Npm) Target() model.Target {
+	return n
+}
+
+func (n *Npm) Create(s *model.Source) *exec.Cmd {
+	return exec.Command(Js.Npm, "run", n.Name)
+}
+
+func (n *Npm) Label() string {
+	return n.Name
+}
+
+func (n *Npm) Hydrate(src *model.Source) (model.HydratedTarget, error) {
+	return n, nil
+}
+
+func (n *Npm) File(src *model.Source) string {
+	return filepath.Join(src.Path, "package.json")
+}
diff --git a/runner/js/target_script.go b/runner/js/target_script.go
new file mode 100644
index 0000000..6ad213d
--- /dev/null
+++ b/runner/js/target_script.go
@@ -0,0 +1,55 @@
+package js
+
+import (
+	"github.com/ewy1/pik/describe"
+	"github.com/ewy1/pik/model"
+	"github.com/ewy1/pik/runner"
+	"github.com/ewy1/pik/spool"
+	"os/exec"
+	"path/filepath"
+)
+
+type Script struct {
+	runner.BaseTarget
+	Typed bool
+}
+
+func (t *Script) Icon() string {
+	if t.Typed {
+		return "\uE628"
+	} else {
+		return "\uE60C"
+	}
+}
+
+func (t *Script) Description(src *model.HydratedSource) string {
+	d, err := describe.Describe(t, t.File(src.Source))
+	if err != nil {
+		_, _ = spool.Warn("%v\n", err)
+	}
+	return d
+}
+
+func (t *Script) Target() model.Target {
+	return t
+}
+
+func (t *Script) Create(s *model.Source) *exec.Cmd {
+	if t.Typed {
+		return exec.Command(Js.TsInterpreter, t.File(s))
+	} else {
+		return exec.Command(Js.JsInterpreter, t.File(s))
+	}
+}
+
+func (t *Script) Label() string {
+	return t.Identity.Full
+}
+
+func (t *Script) Hydrate(src *model.Source) (model.HydratedTarget, error) {
+	return t, nil
+}
+
+func (t *Script) File(src *model.Source) string {
+	return filepath.Join(src.Path, "package.json")
+}