package holder

import (
	"encoding/json"
	"errors"
	"strings"
	"testing"
)

// A publish is checked against the builder's reservation by the seat mesh-builds' verb reserved, asked with the package's name
// (design 47 §381, §478).
func reservedChecksAPublishAgainstTheReservation(t *testing.T) {
	for _, c := range []struct {
		name   string
		answer string
		err    error
		ok     bool
		why    string // part of the reason, or of the error
	}{
		{name: "the reserved version and digest", answer: `{"module":"mesh-image","version":"0.1.7","artifacts":[{"artifact":"mesh-image:image","digest":"sha256:aa"}]}`, ok: true},
		{name: "another artifact of it carries the digest", answer: `{"module":"mesh-image","version":"0.1.7","artifacts":[{"artifact":"mesh-image:aux"},{"artifact":"mesh-image:image","digest":"sha256:aa"}]}`, ok: true},
		{name: "another digest", answer: `{"module":"mesh-image","version":"0.1.7","artifacts":[{"artifact":"mesh-image:image","digest":"sha256:bb"}]}`, why: "another digest than sha256:aa"},
		{name: "another version reserved", answer: `{"module":"mesh-image","version":"0.1.8","artifacts":[]}`, why: "reserved 0.1.8 for registry/mesh-image, not 0.1.7"},
		{name: "the builder refused the name", err: errors.New("no entry carries registry/mesh-image"), why: "no entry carries registry/mesh-image"},
		{name: "an answer that is none", answer: `{"error":"x"}`, why: "answered no reservation"},
	} {
		asked := ""
		r := Reserved{Ask: func(address string, body any) (json.RawMessage, error) {
			b, _ := json.Marshal(body)
			asked = address + " " + string(b)
			return json.RawMessage(c.answer), c.err
		}}
		ok, why, err := r.Recorded("registry/mesh-image", "0.1.7", "sha256:aa")
		if asked != `seat:mesh-builds.reserved {"name":"registry/mesh-image","version":"0.1.7"}` {
			t.Fatalf("%s: asked %s", c.name, asked)
		}
		if c.ok {
			if !ok || err != nil {
				t.Errorf("%s: not accepted: %v %v", c.name, why, err)
			}
			continue
		}
		if ok || !strings.Contains(why+fmtErr(err), c.why) {
			t.Errorf("%s: ok=%v why=%q err=%v, want %q", c.name, ok, why, err, c.why)
		}
	}
}

func fmtErr(err error) string {
	if err == nil {
		return ""
	}
	return err.Error()
}