/*
 * Jakefile
 * Objective-J
 *
 * Created by Francisco Tolmasky.
 * Copyright 2009, 280 North, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

require("../common.jake");

// Make sure we can use new functions in an in old javascript engines like Rhino
// This is only needed if new things are introduced in OldBrowserCompatibility.js
// as we are running in an already built Objective-J environment
require("./OldBrowserCompatibility");

/* var FILE = require("file"),
    OS = require("os"),
    stream = require("narwhal/term").stream; */

var path = require("path");
var fs = require("fs");
var terser = require("terser");

var walk = require("./acornwalk").acorn.walk;
acorn = {walk: walk};
acorn = require("./acorn").acorn;
var compiler = require("./ObjJAcornCompiler").ObjJCompiler;

const term = ObjectiveJ.term;

//$BUILD_CONFIGURATION_DIR = "../Build"
$BROWSER_FILE       = path.join("Browser", "Objective-J.js");

$BUILD_OBJECTIVE_J  = path.join($BUILD_CONFIGURATION_DIR, "Objective-J");
$BUILD_BROWSER_FILE = path.join($BUILD_OBJECTIVE_J, "Objective-J.js");

$INCLUDE_FLAGS      = ["'-I" + process.cwd() + "'"];
$DEBUG_FLAGS        = $CONFIGURATION === "Debug" ? ["-DDEBUG=1"] : [""];
$OBJECTIVEJ_FILES   = new FileList("*.js");

$BROWSER_FILES      = new FileList($BROWSER_FILE).include($OBJECTIVEJ_FILES);


filedir($BUILD_BROWSER_FILE, $BROWSER_FILES, async function(aTask)
{
    gcc($BROWSER_FILE,
        $BUILD_BROWSER_FILE,
        environmentFlags("Browser", "ObjJ").concat($INCLUDE_FLAGS, $DEBUG_FLAGS, ["-Wno-unused-but-set-variable"]), $CONFIGURATION !== "Debug");
});

$LICENSE        = path.join("CommonJS", "lib", "objective-j", "jake", "LICENSES", "LGPL-v2.1");
$BUILD_LICENSE  = path.join($BUILD_OBJECTIVE_J, "LICENSE");

filedir($BUILD_LICENSE, [$LICENSE], function()
{
    fs.copyFileSync($LICENSE, $BUILD_LICENSE);
});

new FileList("CommonJS/**/*").forEach( async function(aFilename)
{
    // . files should be left out of FileList...
    if (!fs.lstatSync(aFilename).isFile() || path.basename(aFilename).charAt(0) === ".")
        return;

    var buildFilename = path.join($BUILD_CJS_OBJECTIVE_J, path.relative("CommonJS/", aFilename));

    filedir (buildFilename, new FileList(aFilename).include($OBJECTIVEJ_FILES), function ()
    {
        if (path.extname(aFilename) !== ".js")
        {
            term.stream.print("Copying... \0green(" + aFilename +"\0)");
            cp(aFilename, buildFilename);
        }
        else
            gcc(aFilename,
                buildFilename,
                environmentFlags("CommonJS", "ObjJ").concat($INCLUDE_FLAGS, $DEBUG_FLAGS, ["-Wno-unused-but-set-variable"]), false);
    });

    // HACK: narwhal should copy permissions
    if (path.dirname(aFilename) === path.join("CommonJS", "bin"))
    {
        filedir (buildFilename, function ()
        {
            fs.chmodSync(buildFilename, 0o755);
        });
    }
    task ("build", buildFilename);
    CLOBBER.include(buildFilename);
});

task ("build", function() {
    setPackageMetadata(path.join($BUILD_CJS_OBJECTIVE_J, "package.json"));
});

$BUILD_CJS_OBJECTIVE_J_FRAMEWORK = path.join($BUILD_CJS_OBJECTIVE_J, "Frameworks", "Objective-J");

filedir($BUILD_CJS_OBJECTIVE_J_FRAMEWORK, function()
{
    cp_r($BUILD_OBJECTIVE_J, $BUILD_CJS_OBJECTIVE_J_FRAMEWORK);
});

CLOBBER.include($BUILD_OBJECTIVE_J);

function environmentFlags()
{
    var environments = Array.prototype.slice.call(arguments)

    return environments.map(function(anEnvironment) {
        return "-D" + anEnvironment.toUpperCase();
    }).concat("-DENVIRONMENTS=" + JSON.stringify(environments));
}

async function compressor(srcCode) {
    return (await terser.minify(srcCode)).code;
}

var headerText = fs.readFileSync("header.txt", { encoding: "utf8" });
async function gcc(inputFilePath, outputFilePath, flags, compress)
{
    term.stream.print("Building... \0green(" + outputFilePath +"\0)");
    var source = fs.readFileSync(inputFilePath, { charset : "utf8" }).toString();
    var compilerOptions = compiler.parseGccCompilerFlags(flags.join(" "));
    var acornOptions = compilerOptions.acornOptions || (compilerOptions.acornOptions = {});

    acornOptions.preprocessGetIncludeFile = function(filePath, isQuoted) {
        var includeContent = fs.readFileSync(filePath, { charset : "utf8" }).toString();
        return {include: includeContent, sourceFile: filePath};
    }

    var c = compiler.compile(source, inputFilePath, compilerOptions);
    var warnings = [],
        anyErrors = false;

    for (var i = 0; i < c.warningsAndErrors.length; i++)
    {
        var warning = c.warningsAndErrors[i],
            message = c.prettifyMessage(warning);

        // Set anyErrors to 'true' if there are any errors in the list
        anyErrors = anyErrors || warning.messageType === "ERROR";
        console.log(message);
    }

    if (anyErrors) throw "Compilation Error";
    var code = c.code();
    var contents = headerText + code;
    if (path.extname(inputFilePath) === ".js" && compress) {
        contents = await compressor(contents);
    }
    fs.writeFileSync(outputFilePath, contents, { encoding : "utf8" });
}

task("build", [$BUILD_BROWSER_FILE, $BUILD_LICENSE, $BUILD_CJS_OBJECTIVE_J_FRAMEWORK]);