import { execSync } from "child_process";
import { join as pathJoin, relative as pathRelative } from "path";
import { getThisCodebaseRootDirPath } from "../src/bin/tools/getThisCodebaseRootDirPath";
import * as fs from "fs";
import * as os from "os";

const singletonDependencies: string[] = ["react", "@types/react"];

const rootDirPath = getThisCodebaseRootDirPath();

//NOTE: This is only required because of: https://github.com/garronej/ts-ci/blob/c0e207b9677523d4ec97fe672ddd72ccbb3c1cc4/README.md?plain=1#L54-L58
fs.writeFileSync(
    pathJoin(rootDirPath, "dist", "package.json"),
    Buffer.from(
        JSON.stringify(
            (() => {
                const packageJsonParsed = JSON.parse(
                    fs
                        .readFileSync(pathJoin(rootDirPath, "package.json"))
                        .toString("utf8")
                );

                return {
                    ...packageJsonParsed,
                    main: packageJsonParsed["main"]?.replace(/^dist\//, ""),
                    types: packageJsonParsed["types"]?.replace(/^dist\//, ""),
                    module: packageJsonParsed["module"]?.replace(/^dist\//, ""),
                    exports: !("exports" in packageJsonParsed)
                        ? undefined
                        : Object.fromEntries(
                              Object.entries(packageJsonParsed["exports"]).map(
                                  ([key, value]) => [
                                      key,
                                      (value as string).replace(/^\.\/dist\//, "./")
                                  ]
                              )
                          )
                };
            })(),
            null,
            2
        ),
        "utf8"
    )
);

const commonThirdPartyDeps = (() => {
    // For example [ "@emotion" ] it's more convenient than
    // having to list every sub emotion packages (@emotion/css @emotion/utils ...)
    // in singletonDependencies
    const namespaceSingletonDependencies: string[] = [];

    return [
        ...namespaceSingletonDependencies
            .map(namespaceModuleName =>
                fs
                    .readdirSync(
                        pathJoin(rootDirPath, "node_modules", namespaceModuleName)
                    )
                    .map(submoduleName => `${namespaceModuleName}/${submoduleName}`)
            )
            .reduce((prev, curr) => [...prev, ...curr], []),
        ...singletonDependencies
    ];
})();

const yarnGlobalDirPath = pathJoin(rootDirPath, ".yarn_home");

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

const execYarnLink = (params: { targetModuleName?: string; cwd: string }) => {
    const { targetModuleName, cwd } = params;

    const cmd = [
        "yarn",
        "link",
        ...(targetModuleName !== undefined ? [targetModuleName] : ["--no-bin-links"])
    ].join(" ");

    console.log(`$ cd ${pathRelative(rootDirPath, cwd) || "."} && ${cmd}`);

    execSync(cmd, {
        cwd,
        env: {
            ...process.env,
            ...(os.platform() === "win32"
                ? { USERPROFILE: yarnGlobalDirPath }
                : { HOME: yarnGlobalDirPath })
        }
    });
};

const testAppPaths = (() => {
    const [, , ...testAppNames] = process.argv;

    return testAppNames
        .map(testAppName => {
            const testAppPath = pathJoin(rootDirPath, "..", testAppName);

            if (fs.existsSync(testAppPath)) {
                return testAppPath;
            }

            console.warn(
                `Skipping ${testAppName} since it cant be found here: ${testAppPath}`
            );

            return undefined;
        })
        .filter((path): path is string => path !== undefined);
})();

if (testAppPaths.length === 0) {
    console.error("No test app to link into!");
    process.exit(-1);
}

testAppPaths.forEach(testAppPath => execSync("yarn install", { cwd: testAppPath }));

console.log("=== Linking common dependencies ===");

const total = commonThirdPartyDeps.length;
let current = 0;

commonThirdPartyDeps.forEach(commonThirdPartyDep => {
    current++;

    console.log(`${current}/${total} ${commonThirdPartyDep}`);

    const localInstallPath = pathJoin(
        ...[
            rootDirPath,
            "node_modules",
            ...(commonThirdPartyDep.startsWith("@")
                ? commonThirdPartyDep.split("/")
                : [commonThirdPartyDep])
        ]
    );

    execYarnLink({ cwd: localInstallPath });
});

commonThirdPartyDeps.forEach(commonThirdPartyDep =>
    testAppPaths.forEach(testAppPath =>
        execYarnLink({
            cwd: testAppPath,
            targetModuleName: commonThirdPartyDep
        })
    )
);

console.log("=== Linking in house dependencies ===");

execYarnLink({ cwd: pathJoin(rootDirPath, "dist") });

testAppPaths.forEach(testAppPath =>
    execYarnLink({
        cwd: testAppPath,
        targetModuleName: JSON.parse(
            fs.readFileSync(pathJoin(rootDirPath, "package.json")).toString("utf8")
        )["name"]
    })
);

export {};