#!/usr/bin/env python3

def write_init_vh(filename, initbits):
    with open(filename, "w") as f:
        for i in range(16):
            print("localparam [255:0] INIT_%X = {" % i, file=f)
            for k in range(32):
                print("  %s%s" % (", ".join(["INIT[%4dpre { line-height: 125%; margin: 0; }
td.linenos pre { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
span.linenos { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
td.linenos pre.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight { background: #ffffff; }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
var path = require('path');

var packagejs = require('./package.json');
var conf = require('./conf.js');

// Sorted alphabetically!
var babelify = require('babelify');
var envify = require('envify/custom');
var browserify = require('browserify');
var gulp = require("gulp");
var eslint = require('gulp-eslint');
var less = require("gulp-less");
var livereload = require("gulp-livereload");
var cleanCSS = require('gulp-clean-css');
var notify = require("gulp-notify");
var peg = require("gulp-peg");
var plumber = require("gulp-plumber");
var rename = require("gulp-rename");
var sourcemaps = require('gulp-sourcemaps');
var gutil = require("gulp-util");
var _ = require('lodash');
var uglifyify = require('uglifyify');
var buffer = require('vinyl-buffer');
var source = require('vinyl-source-stream');
var watchify = require('watchify');

var vendor_packages = _.difference(
    _.union(
        _.keys(packagejs.dependencies),
        conf.js.vendor_includes
    ),
    conf.js.vendor_excludes
);

var handleError = {errorHandler: notify.onError("Error: <%= error.message %>")};

/*
 * Sourcemaps are a wonderful way to develop directly from the chrome devtools.
 * However, generating correct sourcemaps is a huge PITA, especially on Windows.
 * Fixing this upstream is tedious as apparently nobody really cares and
 * a single misbehaving transform breaks everything.
 * Thus, we just manually fix all paths.
 */
function fixSourceMaps(file) {
    file.sourceMap.sources = file.sourceMap.sources.map(function (x) {
        return path.relative(".", x).split(path.sep).join('/');
    });
    return "/";
}
// Browserify fails for paths starting with "..".
function fixBrowserifySourceMaps(file) {
    file.sourceMap.sources = file.sourceMap.sources.map((x) => {
        return x.replace("src/js/node_modules", "node_modules");
    });
    return fixSourceMaps(file);
}
function fixLessSourceMaps(file) {
    file.sourceMap.sources = file.sourceMap.sources.map((x) => {
        if(!x.startsWith("..")){
            return "../src/css/" + x;
        }
        return x.replace("src/js/node_modules", "node_modules");
    });
    return fixSourceMaps(file);
}

function styles(files, dev){
    return gulp.src(files)
        .pipe(dev ? plumber(handleError) : gutil.noop())
        .pipe(sourcemaps.init())
        .pipe(less())
        .pipe(dev ? gutil.noop() : cleanCSS())
        .pipe(sourcemaps.write(".", {sourceRoot: fixLessSourceMaps}))
        .pipe(gulp.dest(conf.static))
        .pipe(livereload({auto: false}));
}
gulp.task("styles-app-dev", function () {
    styles(conf.css.app, true);
});
gulp.task("styles-vendor-dev", function () {
    styles(conf.css.vendor, true);
});
gulp.task("styles-app-prod", function () {
    styles(conf.css.app, false);
});
gulp.task("styles-vendor-prod", function () {
    styles(conf.css.app, false);
});


function buildScript(bundler, filename, dev) {
    if (dev) {
        bundler = watchify(bundler);
    } else {
        bundler = bundler.transform(envify({ _: 'purge', NODE_ENV: 'production' }), { global: true });
        bundler = bundler.transform({global: true}, uglifyify);
    }

    function rebundle() {
        return bundler.bundle()
            .on('error', function(error) {
                gutil.log(error + '\n' + error.codeFrame);
                this.emit('end');
            })
            .pipe(dev ? plumber(handleError) : gutil.noop())
            .pipe(source('bundle.js'))
            .pipe(buffer())
            .pipe(sourcemaps.init({loadMaps: true}))
            .pipe(rename(filename))
            .pipe(sourcemaps.write('.', {sourceRoot: fixBrowserifySourceMaps}))
            .pipe(gulp.dest(conf.static))
            .pipe(livereload({auto: false}));
    }

    // listen for an update and run rebundle
    bundler.on('update', rebundle);
    bundler.on('log', gutil.log);
    bundler.on('error', gutil.log);

    // run it once the first time buildScript is called
    return rebundle();
}

function vendor_stream(dev) {
    var bundler = browserify({
        entries: [],
        debug: true,
        cache: {}, // required for watchify
        packageCache: {} // required for watchify
    });
    for (var vp of vendor_packages) {
        bundler.require(vp);
    }
    return buildScript(bundler, "vendor.js", dev);
}
gulp.task("scripts-vendor-dev", function () {
    return vendor_stream(true);
});
gulp.task("scripts-vendor-prod", function () {
    return vendor_stream(false);
});

function app_stream(dev) {
    var bundler = browserify({
        entries: [conf.js.app],
        debug: true,
        extensions: ['.jsx'],
        cache: {}, // required for watchify
        packageCache: {} // required for watchify
    });
    for (var vp of vendor_packages) {
        bundler.external(vp);
    }
    bundler = bundler.transform(babelify);
    return buildScript(bundler, "app.js", dev);
}
gulp.task('scripts-app-dev', function () {
    return app_stream(true);
});
gulp.task('scripts-app-prod', function () {
    return app_stream(false);
});


gulp.task("eslint", function () {
    return gulp.src(conf.js.eslint)
        .pipe(plumber(handleError))
        .pipe(eslint())
        .pipe(eslint.format())
});

gulp.task("copy", function () {
    return gulp.src(conf.copy, {base: conf.src})
        .pipe(gulp.dest(conf.static));
});


gulp.task('templates', function(){
    return gulp.src(conf.templates, {base: conf.src})
        .pipe(gulp.dest(conf.dist));
});

gulp.task("peg", function () {
    return gulp.src(conf.peg, {base: conf.src})
        .pipe(plumber(handleError))
        .pipe(peg())
        .pipe(gulp.dest("src/"));
});

gulp.task(
    "dev",
    [
        "copy",
        "styles-vendor-dev",
        "styles-app-dev",
        "scripts-vendor-dev",
        "peg",
        "scripts-app-dev",
        "templates"
    ]
);
gulp.task(
    "prod",
    [
        "copy",
        "styles-vendor-prod",
        "styles-app-prod",
        "scripts-vendor-prod",
        "peg",
        "scripts-app-prod",
        "templates"
    ]
);

gulp.task("default", ["dev"], function () {
    livereload.listen({auto: true});
    gulp.watch(["src/css/vendor*"], ["styles-vendor-dev"]);
    gulp.watch(["src/css/**"], ["styles-app-dev"]);

    gulp.watch(conf.templates, ["templates"]);
    gulp.watch(conf.peg, ["peg"]);
    gulp.watch(["src/js/**"], ["eslint"]);
    // other JS is handled by watchify.
    gulp.watch(conf.copy, ["copy"]);
});