package nostr

import "testing"

func TestParseMetadata(t *testing.T) {
	cases := []struct {
		desc, in        string
		name, dn, dnAlt string
		username, nip05 string
	}{
		{
			desc: "snake_case display_name",
			in:   `{"name":"alice","display_name":"Alice","nip05":"alice@azzamo.net"}`,
			name: "alice", dn: "Alice", nip05: "alice@azzamo.net",
		},
		{
			desc:  "camelCase displayName preserved separately",
			in:    `{"displayName":"Alice"}`,
			dnAlt: "Alice",
		},
		{
			desc:     "deprecated username field exposed",
			in:       `{"username":"legacy"}`,
			username: "legacy",
		},
		{
			desc: "all fields together",
			in:   `{"name":"a","display_name":"A","displayName":"AA","username":"u","nip05":"a@x"}`,
			name: "a", dn: "A", dnAlt: "AA", username: "u", nip05: "a@x",
		},
	}
	for _, tc := range cases {
		md, err := ParseMetadata(tc.in)
		if err != nil {
			t.Fatalf("%s: parse error: %v", tc.desc, err)
		}
		if md.Name != tc.name {
			t.Errorf("%s: Name=%q want %q", tc.desc, md.Name, tc.name)
		}
		if md.DisplayName != tc.dn {
			t.Errorf("%s: DisplayName=%q want %q", tc.desc, md.DisplayName, tc.dn)
		}
		if md.DisplayNameAlt != tc.dnAlt {
			t.Errorf("%s: DisplayNameAlt=%q want %q", tc.desc, md.DisplayNameAlt, tc.dnAlt)
		}
		if md.Username != tc.username {
			t.Errorf("%s: Username=%q want %q", tc.desc, md.Username, tc.username)
		}
		if md.NIP05 != tc.nip05 {
			t.Errorf("%s: NIP05=%q want %q", tc.desc, md.NIP05, tc.nip05)
		}
	}
}

func TestParseMetadataInvalidJSON(t *testing.T) {
	if _, err := ParseMetadata("not json"); err == nil {
		t.Fatal("expected error for invalid JSON")
	}
}