import * as child_process from "child_process";
import * as fs from "fs";
import { join } from "path";
import { assert } from "tsafe/assert";
import { transformCodebase } from "../src/bin/tools/transformCodebase";
import chalk from "chalk";
import { WELL_KNOWN_DIRECTORY_BASE_NAME } from "../src/bin/shared/constants";

console.log(chalk.cyan("Building Keycloakify..."));

const startTime = Date.now();

if (fs.existsSync(join("dist", "bin", "main.original.js"))) {
    fs.renameSync(
        join("dist", "bin", "main.original.js"),
        join("dist", "bin", "main.js")
    );

    fs.readdirSync(join("dist", "bin")).forEach(fileBasename => {
        if (/[0-9]\.index.js/.test(fileBasename) || fileBasename.endsWith(".node")) {
            fs.rmSync(join("dist", "bin", fileBasename));
        }
    });
}

run(`npx tsc -p ${join("src", "bin", "tsconfig.json")}`);

if (
    !fs
        .readFileSync(join("dist", "bin", "main.js"))
        .toString("utf8")
        .includes("__nccwpck_require__")
) {
    fs.cpSync(join("dist", "bin", "main.js"), join("dist", "bin", "main.original.js"));
}

run(`npx ncc build ${join("dist", "bin", "main.js")} -o ${join("dist", "ncc_out")}`);

transformCodebase({
    srcDirPath: join("dist", "ncc_out"),
    destDirPath: join("dist", "bin"),
    transformSourceCode: ({ fileRelativePath, sourceCode }) => {
        if (fileRelativePath === "index.js") {
            return {
                newFileName: "main.js",
                modifiedSourceCode: sourceCode
            };
        }

        return { modifiedSourceCode: sourceCode };
    }
});

fs.rmSync(join("dist", "ncc_out"), { recursive: true });

{
    let hasBeenPatched = false;

    fs.readdirSync(join("dist", "bin")).forEach(fileBasename => {
        if (fileBasename !== "main.js" && !fileBasename.endsWith(".index.js")) {
            return;
        }

        const { hasBeenPatched: hasBeenPatched_i } = patchDeprecatedBufferApiUsage(
            join("dist", "bin", fileBasename)
        );

        if (hasBeenPatched_i) {
            hasBeenPatched = true;
        }
    });

    assert(hasBeenPatched);
}

fs.chmodSync(
    join("dist", "bin", "main.js"),
    fs.statSync(join("dist", "bin", "main.js")).mode |
        fs.constants.S_IXUSR |
        fs.constants.S_IXGRP |
        fs.constants.S_IXOTH
);

run(`npx tsc -p ${join("src", "tsconfig.json")}`);
run(`npx tsc-alias -p ${join("src", "tsconfig.json")}`);

if (fs.existsSync(join("dist", "vite-plugin", "index.original.js"))) {
    fs.renameSync(
        join("dist", "vite-plugin", "index.original.js"),
        join("dist", "vite-plugin", "index.js")
    );
}

run(`npx tsc -p ${join("src", "vite-plugin", "tsconfig.json")}`);

if (
    !fs
        .readFileSync(join("dist", "vite-plugin", "index.js"))
        .toString("utf8")
        .includes("__nccwpck_require__")
) {
    fs.cpSync(
        join("dist", "vite-plugin", "index.js"),
        join("dist", "vite-plugin", "index.original.js")
    );
}

run(
    `npx ncc build ${join("dist", "vite-plugin", "index.js")} -o ${join(
        "dist",
        "ncc_out"
    )}`
);

fs.readdirSync(join("dist", "ncc_out")).forEach(fileBasename => {
    assert(!fileBasename.endsWith(".index.js"));
    assert(!fileBasename.endsWith(".node"));
});

transformCodebase({
    srcDirPath: join("dist", "ncc_out"),
    destDirPath: join("dist", "vite-plugin"),
    transformSourceCode: ({ fileRelativePath, sourceCode }) => {
        assert(fileRelativePath === "index.js");

        return { modifiedSourceCode: sourceCode };
    }
});

fs.rmSync(join("dist", "ncc_out"), { recursive: true });

{
    const { hasBeenPatched } = patchDeprecatedBufferApiUsage(
        join("dist", "vite-plugin", "index.js")
    );

    assert(hasBeenPatched);
}

for (const dirBasename of [
    "src",
    WELL_KNOWN_DIRECTORY_BASE_NAME.RESOURCES,
    WELL_KNOWN_DIRECTORY_BASE_NAME.ACCOUNT_V1
]) {
    const destDirPath = join("dist", dirBasename);

    fs.rmSync(destDirPath, { recursive: true, force: true });

    fs.cpSync(dirBasename, destDirPath, { recursive: true });
}

transformCodebase({
    srcDirPath: join("stories"),
    destDirPath: join("dist", "stories"),
    transformSourceCode: ({ fileRelativePath, sourceCode }) => {
        if (!fileRelativePath.endsWith(".stories.tsx")) {
            return undefined;
        }

        return { modifiedSourceCode: sourceCode };
    }
});

console.log(chalk.green(`✓ built in ${((Date.now() - startTime) / 1000).toFixed(2)}s`));

function run(command: string) {
    console.log(chalk.grey(`$ ${command}`));

    child_process.execSync(command, { stdio: "inherit" });
}

function patchDeprecatedBufferApiUsage(filePath: string) {
    const before = fs.readFileSync(filePath).toString("utf8");

    const after = before.replace(
        `var buffer = new Buffer(toRead);`,
        `var buffer = Buffer.allocUnsafe ? Buffer.allocUnsafe(toRead) : new Buffer(toRead);`
    );

    fs.writeFileSync(filePath, Buffer.from(after, "utf8"));

    const hasBeenPatched = after !== before;

    return { hasBeenPatched };
}