package ruleerrors

import (
	"errors"
	"fmt"
	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
	"testing"

	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
)

func TestNewErrMissingTxOut(t *testing.T) {
	outer := NewErrMissingTxOut(
		[]*externalapi.DomainOutpoint{
			{
				TransactionID: *externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{255, 255, 255}),
				Index:         5,
			},
		})
	expectedOuterErr := "ErrMissingTxOut: missing the following outpoint: [(ffffff0000000000000000000000000000000000000000000000000000000000: 5)]"
	inner := &ErrMissingTxOut{}
	if !errors.As(outer, inner) {
		t.Fatal("TestWrapInRuleError: Outer should contain ErrMissingTxOut in it")
	}

	if len(inner.MissingOutpoints) != 1 {
		t.Fatalf("TestWrapInRuleError: Expected len(inner.MissingOutpoints) 1, found: %d", len(inner.MissingOutpoints))
	}
	if inner.MissingOutpoints[0].Index != 5 {
		t.Fatalf("TestWrapInRuleError: Expected 5. found: %d", inner.MissingOutpoints[0].Index)
	}

	rule := &RuleError{}
	if !errors.As(outer, rule) {
		t.Fatal("TestWrapInRuleError: Outer should contain RuleError in it")
	}
	if rule.message != "ErrMissingTxOut" {
		t.Fatalf("TestWrapInRuleError: Expected message = 'ErrMissingTxOut', found: '%s'", rule.message)
	}
	if errors.Is(rule.inner, inner) {
		t.Fatal("TestWrapInRuleError: rule.inner should contain the ErrMissingTxOut in it")
	}

	if outer.Error() != expectedOuterErr {
		t.Fatalf("TestWrapInRuleError: Expected %s. found: %s", expectedOuterErr, outer.Error())
	}
}

func TestNewErrInvalidTransactionsInNewBlock(t *testing.T) {
	tx := &externalapi.DomainTransaction{Fee: 1337}
	txID := consensushashing.TransactionID(tx)
	outer := NewErrInvalidTransactionsInNewBlock([]InvalidTransaction{{tx, ErrNoTxInputs}})
	//TODO: Implement Stringer for `DomainTransaction`
	expectedOuterErr := fmt.Sprintf("ErrInvalidTransactionsInNewBlock: [(%s: ErrNoTxInputs)]", txID)
	inner := &ErrInvalidTransactionsInNewBlock{}
	if !errors.As(outer, inner) {
		t.Fatal("TestNewErrInvalidTransactionsInNewBlock: Outer should contain ErrInvalidTransactionsInNewBlock in it")
	}

	if len(inner.InvalidTransactions) != 1 {
		t.Fatalf("TestNewErrInvalidTransactionsInNewBlock: Expected len(inner.MissingOutpoints) 1, found: %d", len(inner.InvalidTransactions))
	}
	if inner.InvalidTransactions[0].Error != ErrNoTxInputs {
		t.Fatalf("TestNewErrInvalidTransactionsInNewBlock: Expected ErrNoTxInputs. found: %v", inner.InvalidTransactions[0].Error)
	}
	if inner.InvalidTransactions[0].Transaction.Fee != 1337 {
		t.Fatalf("TestNewErrInvalidTransactionsInNewBlock: Expected 1337. found: %v", inner.InvalidTransactions[0].Transaction.Fee)
	}

	rule := &RuleError{}
	if !errors.As(outer, rule) {
		t.Fatal("TestNewErrInvalidTransactionsInNewBlock: Outer should contain RuleError in it")
	}
	if rule.message != "ErrInvalidTransactionsInNewBlock" {
		t.Fatalf("TestNewErrInvalidTransactionsInNewBlock: Expected message = 'ErrInvalidTransactionsInNewBlock', found: '%s'", rule.message)
	}
	if errors.Is(rule.inner, inner) {
		t.Fatal("TestNewErrInvalidTransactionsInNewBlock: rule.inner should contain the ErrInvalidTransactionsInNewBlock in it")
	}

	if outer.Error() != expectedOuterErr {
		t.Fatalf("TestNewErrInvalidTransactionsInNewBlock: Expected %s. found: %s", expectedOuterErr, outer.Error())
	}
}