package mapping

import (
	"os/exec"
	"strings"
	"testing"
)

// The bridge translates values and nothing else: no network, no filesystem, no
// clock, no configuration. Every one of those is a caller's to supply, which is
// what lets this package be reasoned about and tested without a Gitea anywhere.
//
// Two imports and no more: internal/issue for what an issue is, and
// internal/wire for the shapes on the other side. wire is allowed precisely
// because it is inert — shapes and identifiers over the standard library, with
// a layering test of its own — so naming a payload here costs nothing and
// reaches nowhere.
//
// DIRECT imports, not the dependency walk internal/issue does. The domain
// reaches os through internal/project and that is the domain's business; what
// this test is about is what this package itself reaches for. A transport that
// grew a helper here — or a lookup that quietly opened a config file — is what
// it catches.
func TestTheBridgeTranslatesAndNothingElse(t *testing.T) {
	forbidden := map[string]string{
		"net/http":  "an HTTP call belongs in the transport",
		"net":       "an HTTP call belongs in the transport",
		"os":        "a pure function reads no file and no environment",
		"os/exec":   "nothing here shells out",
		"io/ioutil": "a pure function reads no file",
		"time":      "the clock is the caller's; a timestamp arrives as a string",
		"git.noodles.cam/claude-skills/marketplace/cli/internal/gitea":   "the transport imports this package, never the reverse",
		"git.noodles.cam/claude-skills/marketplace/cli/internal/config":  "credentials and repositories are the transport's",
		"git.noodles.cam/claude-skills/marketplace/cli/internal/project": "nothing here resolves a path",
	}

	out, err := exec.Command("go", "list", "-f", `{{join .Imports "\n"}}`, ".").Output()
	if err != nil {
		t.Fatalf("go list: %v", err)
	}
	for _, dep := range strings.Fields(string(out)) {
		if why, bad := forbidden[dep]; bad {
			t.Errorf("mapping imports %s — %s", dep, why)
		}
	}
}