/*
 * 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
 */

var FILE = require("file"),
    OS = require("os");

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


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

var OBJECTIVE_J_FILES = new FileList(
    "Runtime/constants.js",
    "Runtime/utilities.js",
    "Runtime/json2.js",
    "Runtime/runtime.js",
    "Runtime/dictionary.js",
    "Runtime/plist.js",
    "Runtime/file.js",
    "Runtime/exception.js",
    "Runtime/preprocess.js",
    "Runtime/evaluate.js",
    "Runtime/bootstrap.js"
);

if ($CONFIGURATION === "Debug")
    OBJECTIVE_J_FILES.include("Runtime/debug.js");

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

filedir($BUILD_BROWSER_FILE, OBJECTIVE_J_FILES, function(aTask)
{
    build_product(aTask.name(), environmentFlags("ObjJ") + " -DPLATFORM_USERAGENT");
});

filedir($BUILD_CJS_FILE, OBJECTIVE_J_FILES, function(aTask)
{
    flags = environmentFlags("CommonJS", "ObjJ");
    flags += ' -DRHINO'

    build_product(aTask.name(), flags)
});

$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)
{
    if (!FILE.isFile(aFilename))
        return;

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

    filedir (buildFilename, [aFilename], function ()
    {
        cp(aFilename, buildFilename);
    });

    if (FILE.dirname(aFilename) === FILE.join("CommonJS", "bin"))
    {
        filedir (buildFilename, function ()
        {
            FILE.chmod(buildFilename, 0755);
        });
    }

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

$BUILD_CJS_OBJECTIVE_J_FRAMEWORK = FILE.join($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()
{
    return "-DENVIRONMENTS=\"[" + Array.prototype.map.apply(arguments, [function(anEnvironment) {
        return "\\\"" + anEnvironment + "\\\"";
    }]).join(", ") + "]\"";
}

function build_product(path, flags)
{
    var sources = OBJECTIVE_J_FILES.filter(function(aName) { return !!aName.match(/\.js$/); });

    var productOut = FILE.open(path, "w", { charset : "UTF-8" });
    
    FILE.open("Runtime/header.txt", "r", { charset : "UTF-8" })
        .copy(productOut)
        .close();
    
    var preprocessor = OS.popen("gcc " + flags + " -E -x c -P -");
    
    sources.forEach(function(source) {
        FILE.open(source, "r", { charset : "UTF-8" })
            .copy(preprocessor.stdin)
            .close();
    });
    
    preprocessor.stdin.close();
    preprocessor.stdout.copy(productOut);
        
    productOut.close();
    
    var code = preprocessor.wait();
    
    // this is equivalent to the above, but less cross platform:
    //OS.system(["cp", "Runtime/header.txt", path]);
    //var code = OS.system("cat " + sources.map(OS.enquote).join(' ') + " | gcc " + flags + " -E -x c -P - >> " + OS.enquote(path));
    
    if (code !== 0) {
        FILE.remove(path);
        OS.exit(1);
    }
    //    rake abort if ($? != 0)
}

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