package main

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

func catalogue(t *testing.T, files map[string]string) string {
	t.Helper()
	root := t.TempDir()
	for p, c := range files {
		full := filepath.Join(root, p)
		if err := os.MkdirAll(filepath.Dir(full), 0o755); err != nil {
			t.Fatal(err)
		}
		if err := os.WriteFile(full, []byte(c), 0o644); err != nil {
			t.Fatal(err)
		}
	}
	return root
}

const owner = `{"module":"power","resources":[{"id":"d","type":"directory","path":"/run/mesh-power"}]}`

func TestAModuleReadingAnothersStateIsFound(t *testing.T) {
	root := catalogue(t, map[string]string{
		"modules/power/module.json":       owner,
		"modules/power/cmd/power/draw.go": `const f = "/run/mesh-power/draw"`,
		"modules/bar/module.json":         `{"module":"bar","resources":[{"id":"x","type":"file","path":"/etc/x","content":"cat /run/mesh-power/draw"}]}`,
		"modules/other/module.json":       `{"module":"other"}`,
		"modules/other/files/bin/read":    "#!/bin/sh\ncat /run/mesh-power\n",
		"modules/other/README.md":         "it once read /run/mesh-power/draw",
		"modules/other/cmd/x/x_test.go":   `"/run/mesh-power"`,
		"modules/near/module.json":        `{"module":"near","resources":[{"id":"y","type":"file","path":"/etc/y","content":"/run/mesh-power-other/x"}]}`,
	})
	found, err := Check(root)
	if err != nil {
		t.Fatal(err)
	}
	var got []string
	for _, f := range found {
		got = append(got, f.Module+" "+f.File)
	}
	want := []string{"bar modules/bar/module.json", "other modules/other/files/bin/read"}
	if strings.Join(got, "|") != strings.Join(want, "|") {
		t.Fatalf("found %v, want %v", got, want)
	}
	if !strings.Contains(found[0].String(), "power's") {
		t.Fatalf("%s", found[0])
	}
}

func TestACatalogueWhereEachKeepsToItsOwnIsClean(t *testing.T) {
	root := catalogue(t, map[string]string{
		"modules/power/module.json":       owner,
		"modules/power/cmd/power/draw.go": `const f = "/run/mesh-power/draw"`,
	})
	if found, err := Check(root); err != nil || len(found) != 0 {
		t.Fatalf("%v %v", found, err)
	}
}