adobe/brackets

module.exports = function( grunt ) {

var path = require( "path" );

grunt.registerMultiTask( "copy", "Copy files to destination folder and replace @VERSION with pkg.version", function() {
    function replaceVersion( source ) {
        return source.replace( /@VERSION/g, grunt.config( "pkg.version" ) );
    }
    function copyFile( src, dest ) {
        if ( /(js|css)$/.test( src ) ) {
            grunt.file.copy( src, dest, {
                process: replaceVersion
            });
        } else {
            grunt.file.copy( src, dest );
        }
    }
    var files = grunt.file.expandFiles( this.file.src ),
        target = this.file.dest + "/",
        strip = this.data.strip,
        renameCount = 0,
        fileName;
    if ( typeof strip === "string" ) {
        strip = new RegExp( "^" + grunt.template.process( strip, grunt.config() ).replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" ) );
    }
    files.forEach(function( fileName ) {
        var targetFile = strip ? fileName.replace( strip, "" ) : fileName;
        copyFile( fileName, target + targetFile );
    });
    grunt.log.writeln( "Copied " + files.length + " files." );
    for ( fileName in this.data.renames ) {
        renameCount += 1;
        copyFile( fileName, target + grunt.template.process( this.data.renames[ fileName ], grunt.config() ) );
    }
    if ( renameCount ) {
        grunt.log.writeln( "Renamed " + renameCount + " files." );
    }
});


grunt.registerMultiTask( "zip", "Create a zip file for release", function() {
    // TODO switch back to adm-zip for better cross-platform compability once it actually works
    // 0.1.3 works, but result can't be unzipped
    // its also a lot slower then zip program, probably due to how its used...
    // var files = grunt.file.expandFiles( "dist/" + this.file.src + "/**/*" );
    // grunt.log.writeln( "Creating zip file " + this.file.dest );

    //var AdmZip = require( "adm-zip" );
    //var zip = new AdmZip();
    //files.forEach(function( file ) {
    //    grunt.verbose.writeln( "Zipping " + file );
    //    // rewrite file names from dist folder (created by build), drop the /dist part
    //    zip.addFile(file.replace(/^dist/, "" ), fs.readFileSync( file ) );
    //});
    //zip.writeZip( "dist/" + this.file.dest );
    //grunt.log.writeln( "Wrote " + files.length + " files to " + this.file.dest );

    var done = this.async(),
        dest = this.file.dest,
        src = grunt.template.process( this.file.src, grunt.config() );
    grunt.utils.spawn({
        cmd: "zip",
        args: [ "-r", dest, src ],
        opts: {
            cwd: 'dist'
        }
    }, function( err, result ) {
        if ( err ) {
            grunt.log.error( err );
            done();
            return;
        }
        grunt.log.writeln( "Zipped " + dest );
        done();
    });
});

grunt.registerMultiTask( "md5", "Create list of md5 hashes for CDN uploads", function() {
    // remove dest file before creating it, to make sure itself is not included
    if ( path.existsSync( this.file.dest ) ) {
        fs.unlinkSync( this.file.dest );
    }
    var crypto = require( "crypto" ),
        dir = this.file.src + "/",
        hashes = [];
    grunt.file.expandFiles( dir + "**/*" ).forEach(function( fileName ) {
        var hash = crypto.createHash( "md5" );
        hash.update( grunt.file.read( fileName, "ascii" ) );
        hashes.push( fileName.replace( dir, "" ) + " " + hash.digest( "hex" ) );
    });
    grunt.file.write( this.file.dest, hashes.join( "\n" ) + "\n" );
    grunt.log.writeln( "Wrote " + this.file.dest + " with " + hashes.length + " hashes" );
});

// only needed for 1.8
grunt.registerTask( "download_docs", function() {
    function capitalize(value) {
        return value[0].toUpperCase() + value.slice(1);
    }
    // should be grunt.config("pkg.version")?
    var version = "1.8",
        docsDir = "dist/docs",
        files = "draggable droppable resizable selectable sortable accordion autocomplete button datepicker dialog progressbar slider tabs position"
        .split(" ").map(function(widget) {
            return {
                url: "http://docs.jquery.com/action/render/UI/API/" + version + "/" + capitalize(widget),
                dest: docsDir + '/' + widget + '.html'
            };
        });
    files = files.concat("animate addClass effect hide removeClass show switchClass toggle toggleClass".split(" ").map(function(widget) {
        return {
            url: "http://docs.jquery.com/action/render/UI/Effects/" + widget,
            dest: docsDir + '/' + widget + '.html'
        };
    }));
    files = files.concat("Blind Clip Drop Explode Fade Fold Puff Slide Scale Bounce Highlight Pulsate Shake Size Transfer".split(" ").map(function(widget) {
        return {
            url: "http://docs.jquery.com/action/render/UI/Effects/" + widget,
            dest: docsDir + '/effect-' + widget.toLowerCase() + '.html'
        };
    }));
    grunt.file.mkdir( "dist/docs" );
    grunt.utils.async.forEach( files, function( file, done ) {
        var out = fs.createWriteStream( file.dest );
        out.on( "close", done );
        request( file.url ).pipe( out );
    }, this.async() );
});

grunt.registerTask( "download_themes", function() {
    // var AdmZip = require('adm-zip');
    var done = this.async(),
        themes = grunt.file.read( "build/themes" ).split(","),
        requests = 0;
    grunt.file.mkdir( "dist/tmp" );
    themes.forEach(function( theme, index ) {
        requests += 1;
        grunt.file.mkdir( "dist/tmp/" + index );
        var zipFileName = "dist/tmp/" + index + ".zip",
            out = fs.createWriteStream( zipFileName );
        out.on( "close", function() {
            grunt.log.writeln( "done downloading " + zipFileName );
            // TODO AdmZip produces "crc32 checksum failed", need to figure out why
            // var zip = new AdmZip(zipFileName);
            // zip.extractAllTo('dist/tmp/' + index + '/');
            // until then, using cli unzip...
            grunt.utils.spawn({
                cmd: "unzip",
                args: [ "-d", "dist/tmp/" + index, zipFileName ]
            }, function( err, result ) {
                grunt.log.writeln( "Unzipped " + zipFileName + ", deleting it now" );
                fs.unlinkSync( zipFileName );
                requests -= 1;
                if (requests === 0) {
                    done();
                }
            });
        });
        request( "http://ui-dev.jquery.com/download/?" + theme ).pipe( out );
    });
});

grunt.registerTask( "copy_themes", function() {
    // each package includes the base theme, ignore that
    var filter = /themes\/base/,
        files = grunt.file.expandFiles( "dist/tmp/*/development-bundle/themes/**/*" ).filter(function( file ) {
            return !filter.test( file );
        }),
        // TODO the grunt.template.process call shouldn't be necessary
        target = "dist/" + grunt.template.process( grunt.config( "files.themes" ), grunt.config() ) + "/",
        distFolder = "dist/" + grunt.template.process( grunt.config( "files.dist" ), grunt.config() );
    files.forEach(function( fileName ) {
        var targetFile = fileName.replace( /dist\/tmp\/\d+\/development-bundle\//, "" ).replace( "jquery-ui-.custom", "jquery-ui" );
        grunt.file.copy( fileName, target + targetFile );
    });

    // copy minified base theme from regular release
    files = grunt.file.expandFiles( distFolder + "/themes/base/**/*" );
    files.forEach(function( fileName ) {
        grunt.file.copy( fileName, target + fileName.replace( distFolder, "" ) );
    });
});

grunt.registerTask( "clean", function() {
    require( "rimraf" ).sync( "dist" );
});

grunt.registerTask( "authors", function() {
    var done = this.async();

    grunt.utils.spawn({
        cmd: "git",
        args: [ "log", "--pretty=%an <%ae>" ]
    }, function( err, result ) {
        if ( err ) {
            grunt.log.error( err );
            return done( false );
        }

        var authors,
            tracked = {};
        authors = result.split( "\n" ).reverse().filter(function( author ) {
            var first = !tracked[ author ];
            tracked[ author ] = true;
            return first;
        }).join( "\n" );
        grunt.log.writeln( authors );
        done();
    });
});

};