#!/usr/bin/env objj

require("narwhal").ensureEngine("rhino");

@import <Foundation/Foundation.j>

@import "../lib/cappuccino/objj-analysis-tools.j"

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

var stream = require("term").stream;
var parser = new (require("args").Parser)();

parser.usage("INPUT_PROJECT OUTPUT_PROJECT");
parser.help("Combine a Cappuccino application into a single JavaScript file.");

parser.option("-m", "--main", "main")
    .def("main.j")
    .set()
    .help("The relative path (from INPUT_PROJECT) to the main file (default: 'main.j')");

parser.option("-F", "--framework", "frameworks")
    .def(["Frameworks"])
    .push()
    .help("Add a frameworks directory, relative to INPUT_PROJECT (default: ['Frameworks'])");

parser.option("-f", "--force", "force")
    .def(false)
    .set(true)
    .help("Force overwriting OUTPUT_PROJECT if it exists");

parser.option("--index", "index")
    .def("index.html")
    .set()
    .help("The root HTML file to modify (default: index.html)");

parser.option("-v", "--verbose", "verbose")
   .def(false)
   .set(true)
   .help("Verbose logging");

parser.helpful();

function main(args)
{
    var options = parser.parse(args);

    if (options.args.length < 2) {
        parser.printUsage(options);
        return;
    }

    var rootPath = FILE.path(options.args[0]).join("").absolute();
    var outputPath = FILE.path(options.args[1]).join("").absolute();

    if (outputPath.exists()) {
        if (options.force) {
            // FIXME: why doesn't this work?!
            //outputPath.rmtree();
            OS.system(["rm", "-rf", outputPath]);
        } else {
            stream.print("\0red(OUTPUT_PROJECT " + outputPath + " exists. Use -f to overwrite.\0)");
            OS.exit(1);
        }
    }

    var mainPath = String(rootPath.join(options.main));
    var frameworks = options.frameworks.map(function(framework) { return rootPath.join(framework); });
    var environment = "Browser";

    stream.print("\0yellow("+Array(81).join("=")+"\0)");
    stream.print("Application root:    \0green(" + rootPath + "\0)");
    stream.print("Output directory:    \0green(" + outputPath + "\0)");

    stream.print("\0yellow("+Array(81).join("=")+"\0)");
    stream.print("Main file:           \0green(" + mainPath + "\0)");
    stream.print("Frameworks:          \0green(" + frameworks + "\0)");
    stream.print("Environment:         \0green(" + environment + "\0)");

    var flattener = new ObjectiveJFlattener(rootPath);

    flattener.setIncludePaths(frameworks);
    flattener.setEnvironments([environment, "ObjJ"]);

    flattener.load(mainPath);
    flattener.finishLoading();

    var root = flattener.require("objective-j").StaticResource.root;

    // FIXME: shouldn't have to do this manually
    var components = rootPath.split("/").slice(1, -1);
    var node = root;
    while (components.length) {
        node = node._children[components.shift()];
    }
    applicationRoot = node;

    print(applicationRoot.toString());

    var applicationJS = flattener.buildApplicationJS(applicationRoot);

    FILE.copyTree(rootPath, outputPath);

    outputPath.join("Application.js").write(applicationJS);

    rewriteMainHTML(outputPath.join(options.index));
}

// ObjectiveJFlattener inherits from ObjectiveJRuntimeAnalyzer
function ObjectiveJFlattener(rootPath) {
    ObjectiveJRuntimeAnalyzer.apply(this, arguments);

    this.resourceBuffer = [];
    this.bundleBuffer = [];
    this.functionsBuffer = [];

    this._outputBundles = {};
}

ObjectiveJFlattener.prototype = Object.create(ObjectiveJRuntimeAnalyzer.prototype);

ObjectiveJFlattener.prototype.buildApplicationJS = function(applicationRoot) {
    print(applicationRoot);

    this.serializeStaticResources(applicationRoot);
    this.serializeStaticFileExecutables();

    var buffer = []

    buffer.push("(function(){");

    buffer.push(this.bundleBuffer.join("\n"));

    buffer.push("var nodeStack = [];");
    buffer.push("var applicationRoot = ObjectiveJ.StaticResource.root.nodeAtSubPath(ObjectiveJ.StaticResource.cwd, YES);");
    buffer.push("var currentNode = null;");
    buffer.push("var newNode;");

    buffer.push(this.resourceBuffer.join("\n"));

    buffer.push("})();");

    buffer.push(this.functionsBuffer.join("\n"));

    buffer.push("ObjectiveJ.bootstrap();");

    return buffer.join("\n");
}

ObjectiveJFlattener.prototype.serializeStaticFileExecutables = function() {
    this.require("objective-j").FileExecutable.allFileExecutables().forEach(function(aFileExecutable) {
        var deps = aFileExecutable.fileDependencies().map(function(dependency) {
            return "new ObjectiveJ.FileDependency("+JSON.stringify(dependency.path())+","+JSON.stringify(dependency.isLocal())+")"
        }).join(",");

        var func = aFileExecutable._function.toString();
        // HACK
        func = func.replace(", require, exports, module, system, print, window", "");

        this.functionsBuffer.push("var path = ObjectiveJ.StaticResource.cwd + "+JSON.stringify("/"+this.rootPath.relative(aFileExecutable.path()))+";");
        this.functionsBuffer.push("new ObjectiveJ.FileExecutable(path,"+
            "new ObjectiveJ.Executable(null, ["+deps+"], path, "+func+"));");
    }, this);
}

ObjectiveJFlattener.prototype.serializeStaticResources = function(node, depth) {
    depth = depth || 0;

    //print(Array(depth+1).join(" ") + node);

    var bundle = this.context.global.CFBundle.bundleContainingPath(node.path());
    if (!bundle) {
        stream.print("\0yellow(Warning:\0) No bundle for path: \0cyan("+node.path()+"\0)");
    }
    else if (!this._outputBundles[bundle.path()]) {
        this._outputBundles[bundle.path()] = bundle;
        stream.print("Writing bundle: \0cyan("+bundle.path()+"\0)");
        print(bundle.infoDictionary())

        this.bundleBuffer.push("var bundle = new CFBundle("+JSON.stringify(this.rootPath.relative(bundle.path()).toString())+");");
        this.bundleBuffer.push("bundle._loadStatus = " + (1<<4) + ";");
        if (bundle.infoDictionary()) {
            this.bundleBuffer.push("bundle._infoDictionary = CFPropertyList.propertyListFromString(" +
                JSON.stringify(CPPropertyListCreateData(bundle.infoDictionary()).rawString()) + ");");
        }
    }

    // not the root node:
    if (depth > 0) {
        this.resourceBuffer.push("newNode = new ObjectiveJ.StaticResource(" +
            JSON.stringify(node.name()) +
            ", currentNode, " +
            JSON.stringify(node.isDirectory()) + ", " +
            JSON.stringify(node.isResolved()) + ");");
    } else {
        this.resourceBuffer.push("newNode = applicationRoot;");
    }

    // var contents = node.contents();
    // if (contents) {
    //     this.resourceBuffer.push("newNode._contents = " + JSON.stringify(contents) + ";");
    // }

    if (!node.children())
        return;

    this.resourceBuffer.push("nodeStack.push(currentNode);");
    this.resourceBuffer.push("currentNode = newNode;");

    var children = node.children();
    for (var name in children) {
        this.serializeStaticResources(children[name], depth+1);
    }

    this.resourceBuffer.push("currentNode = nodeStack.pop();");
}

// "$1" is the matching indentation
var scriptTagsBefore = '$1<script type = "text/javascript">\n$1    OBJJ_AUTO_BOOTSTRAP = false;\n$1</script>';
var scriptTagsAfter  = '$1<script type = "text/javascript" src = "Application.js"></script>';

function rewriteMainHTML(indexHTMLPath) {
    if (indexHTMLPath.isFile()) {
        var indexHTML = indexHTMLPath.read();

        // attempt to find Objective-J script tag and add ours
        var newIndexHTML = indexHTML.replace(/([ \t]+)<script[^>]+Objective-J\.js[^>]+>(?:\s*<\/script>)?/,
            scriptTagsBefore+'\n$&\n'+scriptTagsAfter);

        if (newIndexHTML !== indexHTML) {
            stream.print("\0green(Modified: "+indexHTMLPath+".\0)");
            indexHTMLPath.write(newIndexHTML);
            return;
        }
    } else {
        stream.print("\0yellow(Warning: "+indexHTMLPath+" does not exist. Specify an alternate index HTML file with the --index option.\0)");
    }

    stream.print("\0yellow(Warning: Unable to automatically modify "+indexHTMLPath + ".\0)");
    stream.print("\nAdd the following before the Objective-J script tag:");
    stream.print(scriptTagsBefore.replace(/\$1/g, "    "));
    stream.print("\nAdd the following after the Objective-J script tag:");
    stream.print(scriptTagsAfter.replace(/\$1/g, "    "));
}