package chain

import (
	"encoding/hex"
	"testing"

	"git.smesh.lol/nostrino/pkg/crypto/chainhash"
)

func TestParseProfile(t *testing.T) {
	rawHeader := Regtest.GenesisHeader.Serialize()
	header := hex.EncodeToString(rawHeader[:])
	raw := `{
		"name": "xbt",
		"magic": "fabfb5da",
		"genesis_header": "` + header + `",
		"genesis_hash": "` + Regtest.GenesisHash.String() + `",
		"p2p_port": "19444",
		"bech32_hrp": "xbt",
		"coin_type": 7332,
		"checkpoint": {
			"height": 100,
			"block_hash": "` + chainhash.DoubleHashH([]byte("b")).String() + `",
			"filter_header": "` + chainhash.DoubleHashH([]byte("f")).String() + `"
		}
	}`
	p, err := ParseProfile([]byte(raw))
	if err != nil {
		t.Fatalf("parse: %v", err)
	}
	if p.Name != "xbt" || p.Magic != 0xfabfb5da || p.Bech32HRP != "xbt" || p.CoinType != 7332 {
		t.Fatalf("profile %#v", p)
	}
	if p.Checkpoint == nil || p.Checkpoint.Height != 100 {
		t.Fatalf("checkpoint %#v", p.Checkpoint)
	}
	if p.GenesisHash != Regtest.GenesisHash {
		t.Fatal("genesis hash mismatch")
	}
}

func TestParseProfileRejectsMismatch(t *testing.T) {
	rawHeader := Regtest.GenesisHeader.Serialize()
	header := hex.EncodeToString(rawHeader[:])
	bad := `{
		"name": "bad",
		"magic": "fabfb5da",
		"genesis_header": "` + header + `",
		"genesis_hash": "` + chainhash.DoubleHashH([]byte("other")).String() + `"
	}`
	if _, err := ParseProfile([]byte(bad)); err == nil {
		t.Fatal("accepted a genesis header that does not match its hash")
	}
	if _, err := ParseProfile([]byte(`{"name":"x","magic":"zz","genesis_header":"00","genesis_hash":"00"}`)); err == nil {
		t.Fatal("accepted malformed hex")
	}
}