import assert from "assert";
import { loadTests } from "./utils.js";
import type { TestCaseTransaction, TestCaseTransactionTx } from "./types.js";


import { isError, Transaction } from "../index.js";


const BN_0 = BigInt(0);

describe("Tests Unsigned Transaction Serializing", function() {
    const tests = loadTests<TestCaseTransaction>("transactions");

    for (const test of tests) {
        it(`serialized unsigned legacy transaction: ${ test.name }`, function() {
            const txData = Object.assign({ }, test.transaction, {
                type: 0,
                accessList: undefined,
                maxFeePerGas: undefined,
                maxPriorityFeePerGas: undefined
            });

            // Use the testcase sans the chainId for a legacy test
            if (txData.chainId != null && parseInt(txData.chainId) != 0) { txData.chainId = "0x00"; }

            const tx = Transaction.from(txData);
            assert.equal(tx.unsignedSerialized, test.unsignedLegacy, "unsignedLegacy");
        });
    }

    for (const test of tests) {
        // Unsupported parameters for EIP-155; i.e. unspecified chain ID
        if (!test.unsignedEip155) { continue; }
        it(`serialized unsigned EIP-155 transaction: ${ test.name }`, function() {
            const txData = Object.assign({ }, test.transaction, {
                type: 0,
                accessList: undefined,
                maxFeePerGas: undefined,
                maxPriorityFeePerGas: undefined
            });

            const tx = Transaction.from(txData);
            assert.equal(tx.unsignedSerialized, test.unsignedEip155, "unsignedEip155");
        });
    }

    for (const test of tests) {
        it(`serialized unsigned Berlin transaction: ${ test.name }`, function() {
            const txData = Object.assign({ }, test.transaction, {
                type: 1,
                maxFeePerGas: undefined,
                maxPriorityFeePerGas: undefined
            });

            const tx = Transaction.from(txData);
            assert.equal(tx.unsignedSerialized, test.unsignedBerlin, "unsignedBerlin");
        });
    }

    for (const test of tests) {
        it(`serialized unsigned London transaction: ${ test.name }`, function() {
            const txData = Object.assign({ }, test.transaction, { type: 2 });
            const tx = Transaction.from(txData);
            assert.equal(tx.unsignedSerialized, test.unsignedLondon, "unsignedLondon");
        });
    }
});

describe("Tests Signed Transaction Serializing", function() {
    const tests = loadTests<TestCaseTransaction>("transactions");

    for (const test of tests) {
        it(`serialized signed legacy transaction: ${ test.name }`, function() {
            const txData = Object.assign({ }, test.transaction, {
                type: 0,
                accessList: undefined,
                maxFeePerGas: undefined,
                maxPriorityFeePerGas: undefined,
                signature: test.signatureLegacy
            });

            // Use the testcase sans the chainId for a legacy test
            if (txData.chainId != null && parseInt(txData.chainId) != 0) { txData.chainId = "0x00"; }

            const tx = Transaction.from(txData);
            assert.equal(tx.serialized, test.signedLegacy, "signedLegacy");
        });
    }

    for (const test of tests) {
        if (!test.unsignedEip155) { continue; }
        it(`serialized signed EIP-155 transaction: ${ test.name }`, function() {
            const txData = Object.assign({ }, test.transaction, {
                type: 0,
                accessList: undefined,
                maxFeePerGas: undefined,
                maxPriorityFeePerGas: undefined,
                signature: test.signatureEip155
             });

            const tx = Transaction.from(txData);
            assert.equal(tx.serialized, test.signedEip155, "signedEip155");
        });
    }

    for (const test of tests) {
        it(`serialized signed Berlin transaction: ${ test.name }`, function() {
            const txData = Object.assign({ }, test.transaction, {
                type: 1,
                maxFeePerGas: undefined,
                maxPriorityFeePerGas: undefined
            }, { signature: test.signatureBerlin });

            const tx = Transaction.from(txData);
            assert.equal(tx.serialized, test.signedBerlin, "signedBerlin");
        });
    }

    for (const test of tests) {
        it(`serialized signed London transaction: ${ test.name }`, function() {
            const txData = Object.assign({ }, test.transaction, {
                type: 2,
                signature: test.signatureLondon
            });

            const tx = Transaction.from(txData);
            assert.equal(tx.serialized, test.signedLondon, "signedLondon");
        });
    }
});

function assertTxUint(actual: null | bigint, _expected: undefined | string, name: string): void {
    const expected = (_expected != null ? BigInt(_expected): null);
    assert.equal(actual, expected, name);
}

function assertTxEqual(actual: Transaction, expected: TestCaseTransactionTx): void {
    assert.equal(actual.to, expected.to, "to");
    assert.equal(actual.nonce, expected.nonce, "nonce");

    assertTxUint(actual.gasLimit, expected.gasLimit, "gasLimit");

    assertTxUint(actual.gasPrice, expected.gasPrice, "gasPrice");
    assertTxUint(actual.maxFeePerGas, expected.maxFeePerGas, "maxFeePerGas");
    assertTxUint(actual.maxPriorityFeePerGas, expected.maxPriorityFeePerGas, "maxPriorityFeePerGas");

    assert.equal(actual.data, expected.data, "data");
    assertTxUint(actual.value, expected.value, "value");

    if (expected.accessList) {
        assert.equal(JSON.stringify(actual.accessList), JSON.stringify(expected.accessList), "accessList");
    } else {
        assert.equal(actual.accessList, null, "accessList:!null");
    }

    assertTxUint(actual.chainId, expected.chainId, "chainId");
}

function addDefault(tx: any, key: string, defaultValue: any): void {
    if (tx[key] == null) { tx[key] = defaultValue; }
}

function addDefaults(tx: any): any {
    tx = Object.assign({ }, tx);
    addDefault(tx, "nonce", 0);
    addDefault(tx, "gasLimit", BN_0);
    addDefault(tx, "gasPrice", BN_0);
    addDefault(tx, "maxFeePerGas", BN_0);
    addDefault(tx, "maxPriorityFeePerGas", BN_0);
    addDefault(tx, "value", BN_0);
    addDefault(tx, "data", "0x");
    addDefault(tx, "accessList", [ ]);
    addDefault(tx, "chainId", BN_0);
    return tx;
}

describe("Tests Unsigned Transaction Parsing", function() {
    const tests = loadTests<TestCaseTransaction>("transactions");

    for (const test of tests) {
        it(`parses unsigned legacy transaction: ${ test.name }`, function() {
            const tx = Transaction.from(test.unsignedLegacy);

            const expected = addDefaults(test.transaction);
            expected.maxFeePerGas = null;
            expected.maxPriorityFeePerGas = null;
            expected.accessList = null;
            expected.chainId = BN_0;

            assertTxEqual(tx, expected);
        });
    }

    for (const test of tests) {
        if (!test.unsignedEip155) { continue; }
        it(`parses unsigned EIP-155 transaction: ${ test.name }`, function() {
            const tx = Transaction.from(test.unsignedEip155);

            const expected = addDefaults(test.transaction);
            expected.maxFeePerGas = null;
            expected.maxPriorityFeePerGas = null;
            expected.accessList = null;

            assertTxEqual(tx, expected);
        });
    }

    for (const test of tests) {
        it(`parses unsigned Berlin transaction: ${ test.name }`, function() {
            const tx = Transaction.from(test.unsignedBerlin);

            const expected = addDefaults(test.transaction);
            expected.maxFeePerGas = null;
            expected.maxPriorityFeePerGas = null;

            assertTxEqual(tx, expected);
        });
    }

    for (const test of tests) {
        it(`parses unsigned London transaction: ${ test.name }`, function() {
            const tx = Transaction.from(test.unsignedLondon);

            const expected = addDefaults(test.transaction);
            expected.gasPrice = null;

            assertTxEqual(tx, expected);
        });
    }
});

describe("Tests Signed Transaction Parsing", function() {
    const tests = loadTests<TestCaseTransaction>("transactions");

    for (const test of tests) {
        it(`parses signed legacy transaction: ${ test.name }`, function() {
            let tx = Transaction.from(test.signedLegacy);

            const expected = addDefaults(test.transaction);
            expected.maxFeePerGas = null;
            expected.maxPriorityFeePerGas = null;
            expected.accessList = null;
            expected.chainId = BN_0;

            for (let i = 0; i < 2; i++) {
                assertTxEqual(tx, expected);

                assert.equal(tx.typeName, "legacy", "typeName");
                assert.equal(tx.isLegacy(), true, "isLegacy");
                assert.equal(tx.isBerlin(), false, "isBerlin");
                assert.equal(tx.isLondon(), false, "isLondon");

                assert.ok(!!tx.signature, "signature:!null")
                assert.equal(tx.signature.r, test.signatureLegacy.r, "signature.r");
                assert.equal(tx.signature.s, test.signatureLegacy.s, "signature.s");
                assert.equal(BigInt(tx.signature.v), BigInt(test.signatureLegacy.v), "signature.v");

                tx = tx.clone();
            }
        });
    }

    for (const test of tests) {
        if (!test.unsignedEip155) { continue; }
        it(`parses signed EIP-155 transaction: ${ test.name }`, function() {
            let tx = Transaction.from(test.signedEip155);

            const expected = addDefaults(test.transaction);
            expected.maxFeePerGas = null;
            expected.maxPriorityFeePerGas = null;
            expected.accessList = null;

            for (let i = 0; i < 2; i++) {
                assertTxEqual(tx, expected);

                assert.equal(tx.typeName, "legacy", "typeName");
                assert.equal(tx.isLegacy(), true, "isLegacy");
                assert.equal(tx.isBerlin(), false, "isBerlin");
                assert.equal(tx.isLondon(), false, "isLondon");

                assert.ok(!!tx.signature, "signature:!null")
                assert.equal(tx.signature.r, test.signatureEip155.r, "signature.r");
                assert.equal(tx.signature.s, test.signatureEip155.s, "signature.s");
                assert.equal(tx.signature.networkV, BigInt(test.signatureEip155.v), "signature.v");

                tx = tx.clone();
            }
        });
    }

    for (const test of tests) {
        it(`parses signed Berlin transaction: ${ test.name }`, function() {
            let tx = Transaction.from(test.signedBerlin);

            const expected = addDefaults(test.transaction);
            expected.maxFeePerGas = null;
            expected.maxPriorityFeePerGas = null;

            for (let i = 0; i < 2; i++) {
                assertTxEqual(tx, expected);

                assert.equal(tx.typeName, "eip-2930", "typeName");
                assert.equal(tx.isLegacy(), false, "isLegacy");
                assert.equal(tx.isBerlin(), true, "isBerlin");
                assert.equal(tx.isLondon(), false, "isLondon");

                assert.ok(!!tx.signature, "signature:!null")
                assert.equal(tx.signature.r, test.signatureBerlin.r, "signature.r");
                assert.equal(tx.signature.s, test.signatureBerlin.s, "signature.s");
                assert.equal(tx.signature.yParity, parseInt(test.signatureBerlin.v), "signature.v");

                tx = tx.clone();
            }
        });
    }

    for (const test of tests) {
        it(`parses signed London transaction: ${ test.name }`, function() {
            let tx = Transaction.from(test.signedLondon);

            const expected = addDefaults(test.transaction);
            expected.gasPrice = null;

            for (let i = 0; i < 2; i++) {
                assertTxEqual(tx, expected);

                assert.equal(tx.typeName, "eip-1559", "typeName");
                assert.equal(tx.isLegacy(), false, "isLegacy");
                assert.equal(tx.isBerlin(), false, "isBerlin");
                assert.equal(tx.isLondon(), true, "isLondon");

                assert.ok(!!tx.signature, "signature:!null")
                assert.equal(tx.signature.r, test.signatureLondon.r, "signature.r");
                assert.equal(tx.signature.s, test.signatureLondon.s, "signature.s");
                assert.equal(tx.signature.yParity, parseInt(test.signatureLondon.v), "signature.v");

                // Test cloning
                tx = tx.clone();
            }
        });
    }
});

describe("Tests Transaction Parameters", function() {
    const badData: Array<{ name: string, data: string, argument: string, message?: string }> = [
        {
            name: "accessList=0x09",
            data: "0x02c9010203040580070809",
            message: "invalid access list",
            argument: "accessList"
        },
        {
            name: "accessList=[0x09]",
            data: "0x02ca0102030405800708c109",
            message: "invalid address-slot set",
            argument: "accessList"
        },
        {
            name: "accessList=[0x09,0x10]",
            data: "0x02cb0102030405800708c20910",
            message: "invalid address-slot set",
            argument: "accessList"
        },
        {
            name: "accessList=[0x09,[HASH]] (bad address)",
            data: "0x02ed0102030405800708e4e309e1a024412927c99a717115f5308c0ebd11136659b3cb6291abb4a8f87e9856a12538",
            message: "invalid address",
            argument: "accessList"
        },
        {
            name: "accessList=[ADDR,[0x09]] (bad slot)",
            data: "0x02e10102030405800708d8d794939d33ff01840e9eeeb67525ec2f7035af41a4b1c109",
            message: "invalid slot",
            argument: "accessList"
        }
    ];

    for (const { name, data, argument, message } of badData) {
        it (`correctly fails on bad accessList: ${ name }`, function() {
            assert.throws(() => {
                // The access list is a single value: 0x09 instead of
                // structured data
                const result = Transaction.from(data);
                console.log(result);
            }, (error: any) => {
                return (isError(error, "INVALID_ARGUMENT") &&
                    error.argument === argument &&
                    (message == null || error.message.startsWith(message)));
            });
        });

    }
});