refactor(commands): separate commands and its core into two folders (#32)

- I think it would be better if one for commands only, one for the spec
handling core logic so people won't be confused by the core logic inside
the commands folder (cleaner I guess)
- Regen docs

tests/spec/filegen_test.go

@@ -0,0 +1,96 @@
+package tests
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/versenilvis/iris/spec"
+)
+
+func TestFileGenerator(t *testing.T) {
+	// Setup mock files
+	tmp := t.TempDir()
+	_ = os.MkdirAll(filepath.Join(tmp, "src"), 0755)
+	_ = os.WriteFile(filepath.Join(tmp, "main.go"), []byte(""), 0644)
+	_ = os.WriteFile(filepath.Join(tmp, "README.md"), []byte(""), 0644)
+	_ = os.WriteFile(filepath.Join(tmp, ".hidden"), []byte(""), 0644)
+	_ = os.WriteFile(filepath.Join(tmp, "src/utils.go"), []byte(""), 0644)
+
+	oldWd, _ := os.Getwd()
+	_ = os.Chdir(tmp)
+	defer func() { _ = os.Chdir(oldWd) }()
+
+
+	t.Run("dirOnly shows only dirs", func(t *testing.T) {
+		gen := spec.FileGenerator("/")
+		results := gen([]string{"cd", ""}, "cd ", "")
+		for _, r := range results {
+			if !strings.HasSuffix(r.Cmd, "/") {
+				t.Errorf("Expected only directories, got %q", r.Cmd)
+			}
+		}
+	})
+
+
+	t.Run("Filter extension", func(t *testing.T) {
+		gen := spec.FileGenerator(".go")
+		results := gen([]string{"ls", ""}, "ls ", "")
+		foundMain := false
+		for _, r := range results {
+			if r.Cmd == "main.go" {
+				foundMain = true
+			}
+			if r.Cmd == "README.md" {
+				t.Errorf("Did not expect README.md when filtering for .go")
+			}
+		}
+		if !foundMain {
+			t.Errorf("FileGenerator(\".go\") did not suggest main.go")
+		}
+	})
+
+
+	t.Run("Nested path", func(t *testing.T) {
+		gen := spec.FileGenerator()
+		results := gen([]string{"ls", "src/u"}, "ls src/u", "src/u")
+		foundUtils := false
+		for _, r := range results {
+			if r.Cmd == "src/utils.go" {
+				foundUtils = true
+			}
+		}
+		if !foundUtils {
+			t.Errorf("Did not find src/utils.go for nested path src/u")
+		}
+	})
+
+
+	t.Run("Deep scan 1 level", func(t *testing.T) {
+		gen := spec.FileGenerator()
+		results := gen([]string{"ls", "src/"}, "ls src/", "src/")
+		foundUtils := false
+		for _, r := range results {
+			if r.Cmd == "src/utils.go" {
+				foundUtils = true
+			}
+		}
+		if !foundUtils {
+			t.Errorf("Deep scan did not find src/utils.go")
+		}
+	})
+
+
+
+
+	t.Run("Hidden files are skipped", func(t *testing.T) {
+		gen := spec.FileGenerator()
+		results := gen([]string{"ls", ""}, "ls ", "")
+		for _, r := range results {
+			if strings.HasPrefix(r.Cmd, ".") {
+				t.Errorf("Hidden file %q should be skipped", r.Cmd)
+			}
+		}
+	})
+}