package planhands

import (
	"os"
	"path/filepath"
	"strings"
	"testing"
)

// A line that takes a plan existing for its module handed is refused and named; one that asks Hands, one marked "not
// handing" and any test file pass; and the real catalogue is clean.
func TestNoModuleTakesAPlanExistingForItsModuleHanded(t *testing.T) {
	root := t.TempDir()
	for f, body := range map[string]string{
		"modules/vault/own.go":         "if a.Provisioning != nil {\n",
		"modules/client/plan.go":       "if len(a.Provisioning) == 0 {\n",
		"modules/vault/rule.go":        "return a.Provisioning != nil && a.Provisioning.Hands(), nil\n",
		"modules/client/binds.go":      "if a.Provisioning != nil { // binds, not handing\n",
		"modules/vault/own_test.go":    "if a.Provisioning == nil {\n",
		"modules/client/notgo/plan.md": "if a.Provisioning == nil {\n",
	} {
		p := filepath.Join(root, f)
		if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
			t.Fatal(err)
		}
		if err := os.WriteFile(p, []byte(body), 0o644); err != nil {
			t.Fatal(err)
		}
	}
	got, err := Problems(root)
	if err != nil {
		t.Fatal(err)
	}
	if len(got) != 2 || !strings.HasPrefix(got[0], "modules/client/plan.go:1:") || !strings.HasPrefix(got[1], "modules/vault/own.go:1:") {
		t.Fatalf("refused %v, wanted the client's and the vault's existence tests alone", got)
	}
	real, err := Problems(filepath.Join("..", ".."))
	if err != nil {
		t.Fatal(err)
	}
	if len(real) > 0 {
		t.Errorf("a module takes a plan existing for its module handed; ask catalogue.Plan.Hands, or mark a line that reads "+
			"only who binds whom \"not handing\":\n%s", strings.Join(real, "\n"))
	}
}