/*
 * 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");

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

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

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

$INCLUDE_FLAGS      = ["-I" + FILE.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, $BROWSER_FILES, function(aTask)
{
    gcc($BROWSER_FILE, 
        $BUILD_BROWSER_FILE, 
        environmentFlags("Browser", "ObjJ").concat($INCLUDE_FLAGS, $DEBUG_FLAGS), $CONFIGURATION !== "Debug");
});

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

filedir($BUILD_LICENSE, [$LICENSE], function()
{
    FILE.copy($LICENSE, $BUILD_LICENSE);
});

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

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

    filedir (buildFilename, new FileList(aFilename).include($OBJECTIVEJ_FILES), function ()
    {
        if (FILE.extension(aFilename) !== ".js")
        {
            stream.print("Copying... \0green(" + aFilename +"\0)");
            cp(aFilename, buildFilename);
        }
        else
            gcc(aFilename,
                buildFilename,
                environmentFlags("CommonJS", "ObjJ").concat($INCLUDE_FLAGS, $DEBUG_FLAGS), false);
    });

    // HACK: narwhal should copy permissions
    if (FILE.dirname(aFilename) === FILE.join("CommonJS", "bin"))
    {
        filedir (buildFilename, function ()
        {
            FILE.chmod(buildFilename, 0755);
        });
    }

    task ("build", buildFilename);
    CLOBBER.include(buildFilename);
});

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

$BUILD_CJS_OBJECTIVE_J_FRAMEWORK = FILE.join($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=" + OS.enquote(JSON.stringify(environments)));
}

var SHRINKSAFE = require("minify/shrinksafe");
function compressor(code) {
    return SHRINKSAFE.compress(code, { charset : "UTF-8", useServer : true });
}

function gcc(inputFilePath, outputFilePath, flags, compress)
{
    stream.print("Building... \0green(" + outputFilePath +"\0)");

    // GCC preprocess the file.
    var cmd = ["gcc", "-E", "-x", "c", "-P"].concat(flags, inputFilePath).join(" ");
    var gcc = OS.popen(cmd, { charset:"UTF-8" });

    var contents = FILE.read("header.txt", { charset : "UTF-8" });
    contents += gcc.stdout.read();

    if (FILE.extension(inputFilePath) === ".js" && compress)
        contents = compressor(contents);

    FILE.write(outputFilePath, contents, { charset : "UTF-8" });
}

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