import assert from "assert";

import {
    hashMessage,
    namehash, isValidName,
    solidityPacked, solidityPackedKeccak256, solidityPackedSha256,
    isError
} from "../index.js";

import { loadTests } from "./utils.js"

import type { TestCaseNamehash, TestCaseSolidityHash } from "./types.js";


//import { dnsEncode, isValidName, namehash } from "../index.js";

describe("Tests Namehash", function() {
    const tests = loadTests<TestCaseNamehash>("namehash");

    for (const test of tests) {
        if (!test.error) {
            it(`hashes ENS name: ${ JSON.stringify(test.name) }`, function() {
                const actual = namehash(test.ensName);

                assert.equal(actual, test.namehash, "namehash");

                // The empty string is not a valid ENS name
                if (test.ensName) {
                    assert.ok(isValidName(test.ensName), "isValidName");
                }
            });
        }
    }

    for (const test of tests) {
        if (test.error) {
            it(`correctly fails to hash ENS name: ${ test.error } ${ JSON.stringify(test.name) }`, function() {
                assert.throws(function() {
                    const actual = namehash(test.ensName);
                    console.log("Failed to throw", actual);
                }, (error) => {
                    return (isError(error, "INVALID_ARGUMENT") &&
                        error.argument === "name" && error.value === test.ensName);
                })

                // The empty string is not a valid ENS name
                if (test.ensName) {
                    assert.ok(!isValidName(test.ensName), "!isValidName");
                }
            });
        }
    }
});

/*
describe("Tests Bad ENS Names", function() {
    const badTests: Array<{ ensName: any, prefix: string }> = [
        { ensName: ".", prefix: "missing component" },
        { ensName:"..", prefix: "missing component" },
        { ensName:"ricmoo..eth", prefix: "missing component" },
        { ensName:"ricmoo...eth", prefix: "missing component" },
        { ensName:".foo", prefix: "missing component" },
        { ensName:"foo.", prefix: "missing component" },
        { ensName: 1234, prefix: "not a string" },
        { ensName: true, prefix: "not a string" },
    ];

    // The empty string is not a valid name, but has a valid namehash
    // (the zero hash) as it is the base case for recursion
    it("empty ENS name", function() {
        assert.ok(!isValidName(""), "!isValidName");
    });

    for (const { ensName, prefix } of badTests) {
        it(`fails on bad ENS name: ${ JSON.stringify(ensName) }`, function() {
            assert.ok(!isValidName(ensName), "!isValidName");
            assert.throws(() => {
                const result = namehash(ensName);
                console.log(result);
            }, (error) => {
                const errorPrefix = `invalid ENS name; ${ prefix }`;
                return (error.code === "INVALID_ARGUMENT" &&
                    error.argument === "name" && error.value === ensName &&
                    error.message.substring(0, errorPrefix.length) === errorPrefix);
            });
        });
    }
});

describe("Tests DNS Encoding", function() {
    const tests: Array<{ ensName: string, dnsEncoded: string}> = [
        { ensName: "", dnsEncoded: "0x00" },
        { ensName: "ricmoo.eth", dnsEncoded: "0x067269636d6f6f0365746800" },
    ];

    for (const { ensName, dnsEncoded } of tests) {
        it(`computes the DNS Encoding: ${ JSON.stringify(ensName) }`, function() {
            assert.equal(dnsEncode(ensName), dnsEncoded, "dnsEncoded");
        });
    }
});

describe("Tests DNS Names", function() {
    const badTests: Array<{ ensName: any, prefix: string}> = [
        { ensName: ".", prefix: "invalid DNS name; missing component" },
        { ensName: "foo..bar", prefix: "invalid DNS name; missing component" },
        { ensName: ".foo", prefix: "invalid DNS name; missing component" },
        { ensName: "foo.", prefix: "invalid DNS name; missing component" },
        { ensName: 1234, prefix: "invalid DNS name; not a string" },
        { ensName: true, prefix: "invalid DNS name; not a string" },
    ];

    for (const { ensName, prefix } of badTests) {
        it(`fails on bad DNS name: ${ JSON.stringify(ensName) }`, function() {
            assert.throws(() => {
                const result = dnsEncode(ensName);
                console.log(result);
            }, (error) => {
                return (error.code === "INVALID_ARGUMENT" &&
                    error.argument === "name" && error.value === ensName &&
                    error.message.substring(0, prefix.length) === prefix);
            });
        });
    }

    {
        const ensName = "foobar012345678901234567890123456789012345678901234567890123456789";
        const prefix = "too long";
        it(`fails on bad DNS name: ${ JSON.stringify(ensName) }`, function() {
            assert.throws(() => {
                const result = dnsEncode(ensName);
                console.log(result);
            }, (error) => {
                return (error.code === "INVALID_ARGUMENT" &&
                    error.argument === "value" && error.value === ensName &&
                    error.message.substring(0, prefix.length) === prefix);
            });
        });
    }

});
*/

describe("Test EIP-191 Personal Message Hash", function() {
    const tests = [
        {
            test: "hello-world",
            message: "Hello World",
            hash: "0xa1de988600a42c4b4ab089b619297c17d53cffae5d5120d82d8a92d0bb3b78f2"
        },
        {
            test: "binary-message",
            message: new Uint8Array([ 0x42, 0x43 ]),
            hash: "0x0d3abc18ec299cf9b42ba439ac6f7e3e6ec9f5c048943704e30fc2d9c7981438"
        },
        {
            test: "hex-looking-string",
            message: "0x4243",
            hash: "0x6d91b221f765224b256762dcba32d62209cf78e9bebb0a1b758ca26c76db3af4"
        }
    ];

    for (const test of tests) {
        it(`tests hashMessage: ${ test.test }`, function() {
            assert.equal(hashMessage(test.message), test.hash);
        });
    }
})

describe("Test Solidity Hash functions", function() {
    const tests = loadTests<TestCaseSolidityHash>("solidity-hashes");

    for (const test of tests) {
        it(`computes the solidity keccak256: ${ test.name }`, function() {
            assert.equal(solidityPackedKeccak256(test.types, test.values), test.keccak256);
        });
    }

    for (const test of tests) {
        it(`computes the solidity sha256: ${ test.name }`, function() {
            assert.equal(solidityPackedSha256(test.types, test.values), test.sha256);
        });
    }

    const badTypes = [
        { types: [ "uint5" ], values: [ 1 ] },
        { types: [ "bytes0" ], values: [ "0x" ] },
        { types: [ "blorb" ], values: [ false ] },
    ];

    for (const { types, values } of badTypes) {
        it("correctly fails on invalid type", function() {
            assert.throws(function() {
                const result = solidityPacked(types, values);
                console.log(result);
            }, function (error) {
                return (isError(error, "INVALID_ARGUMENT") && error.argument === "type");
            });
        });
    }
});