package findtender

import (
	"encoding/json"
	"os"
	"reflect"
	"testing"
)

// TestRoundTrip decodes a release package that uses several extensions and
// checks that re-encoding it loses nothing. Numeric IDs are the one expected
// change: ID always encodes as a string.
func TestRoundTrip(t *testing.T) {
	in, err := os.ReadFile("testdata/release-package.json")
	if err != nil {
		t.Fatal(err)
	}
	var pkg ReleasePackage
	if err := json.Unmarshal(in, &pkg); err != nil {
		t.Fatal(err)
	}

	r := pkg.Releases[0]
	if got := r.Tender.Items[0].ID; got != "1" {
		t.Errorf("numeric item id: got %q, want \"1\"", got)
	}
	if !*r.Tender.Lots[0].Suitability.SME {
		t.Error("lot suitability lost")
	}
	if got := r.Contracts[0].Implementation.PerformanceFailures[0].ID; got != "PF1" {
		t.Errorf("performance failure: got %q", got)
	}

	out, err := json.Marshal(pkg)
	if err != nil {
		t.Fatal(err)
	}
	var want, got any
	json.Unmarshal(in, &want)
	json.Unmarshal(out, &got)
	// Normalise the one numeric ID in the fixture before comparing.
	want.(map[string]any)["releases"].([]any)[0].(map[string]any)["tender"].(map[string]any)["items"].([]any)[0].(map[string]any)["id"] = "1"
	if !reflect.DeepEqual(want, got) {
		t.Fatalf("round trip changed the data:\n%s", out)
	}
}