var cp = require("child_process");

var fse = require("fs-extra");

var path = require("path");

const libssh2VendorDirectory = path.resolve(__dirname, "..", "vendor", "libssh2");

const libssh2ConfigureScript = path.join(libssh2VendorDirectory, "configure");

const libssh2StaticConfigDirectory = path.resolve(__dirname, "..", "vendor", "static_config", "libssh2");

module.exports = function retrieveExternalDependencies() {

console.info("[nodegit] Configuring libssh2.");

// Copy Windows / Mac preconfigured files

if (process.platform === "win32" || process.platform === "darwin") {

return fse.copy(

path.join(libssh2StaticConfigDirectory, process.platform),

path.join(libssh2VendorDirectory, "src")

);

}

// Run the `configure` script on Linux

return new Promise(function(resolve, reject) {

var newEnv = {};

Object.keys(process.env).forEach(function(key) {

newEnv[key] = process.env[key];

});

cp.exec(

libssh2ConfigureScript,

{

cwd: libssh2VendorDirectory,

env: newEnv

},

function(err, stdout, stderr) {

if (err) {

console.error(err);

console.error(stderr);

reject(err, stderr);

}

else {

resolve(stdout);

}

}

);

});

};

// Called on the command line

if (require.main === module) {

module.exports();

}