package restic

import (
	"reflect"
	"testing"
)

var TestStrings = []struct {
	id   string
	data string
}{
	{"c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2", "foobar"},
	{"248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1", "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"},
	{"cc5d46bdb4991c6eae3eb739c9c8a7a46fe9654fab79c47b4fe48383b5b25e1c", "foo/bar"},
	{"4e54d2c721cbdb730f01b10b62dec622962b36966ec685880effa63d71c808f2", "foo/../../baz"},
}

func TestID(t *testing.T) {
	for _, test := range TestStrings {
		id, err := ParseID(test.id)
		if err != nil {
			t.Error(err)
		}

		id2, err := ParseID(test.id)
		if err != nil {
			t.Error(err)
		}
		if !id.Equal(id2) {
			t.Errorf("ID.Equal() does not work as expected")
		}

		// test json marshalling
		buf, err := id.MarshalJSON()
		if err != nil {
			t.Error(err)
		}
		want := `"` + test.id + `"`
		if string(buf) != want {
			t.Errorf("string comparison failed, wanted %q, got %q", want, string(buf))
		}

		var id3 ID
		err = id3.UnmarshalJSON(buf)
		if err != nil {
			t.Fatalf("error for %q: %v", buf, err)
		}
		if !reflect.DeepEqual(id, id3) {
			t.Error("ids are not equal")
		}
	}
}

func TestIDUnmarshal(t *testing.T) {
	var tests = []struct {
		s     string
		valid bool
	}{
		{`"`, false},
		{`""`, false},
		{`'`, false},
		{`"`, false},
		{`"c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4"`, false},
		{`"c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f"`, false},
		{`"c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2"`, true},
	}

	wantID, err := ParseID("c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2")
	if err != nil {
		t.Fatal(err)
	}

	for _, test := range tests {
		t.Run("", func(t *testing.T) {
			id := &ID{}
			err := id.UnmarshalJSON([]byte(test.s))
			if test.valid && err != nil {
				t.Fatal(err)
			}
			if !test.valid && err == nil {
				t.Fatalf("want error for invalid value, got nil")
			}

			if test.valid && !id.Equal(wantID) {
				t.Fatalf("wrong ID returned, want %s, got %s", wantID, id)
			}
		})
	}
}