#!/usr/bin/perl
use strict;

use constant THEMES_OUTDIR => './res/values-v21/';
use constant THEMES_LIST   => './res/values-v21/themes-list.xml';

my $THEMES = [
	{
		_name => 'standard',
		light => { colorAccent => '#ff3e677a', colorPrimary => '#ff37474f', colorPrimaryDark => '#ff263238', _bg => '#fff0f0f0' },
		dark  => { colorAccent => '#ff3e677a', colorPrimary => '#ff37474f', colorPrimaryDark => '#ff263238', _bg => '#ff2a2a2a' },
	},
	{
		_name => 'greyish',
		light => { colorAccent => '#ff212121', colorPrimary => '#ff212121', colorPrimaryDark => '#ff090909', _bg => '#fff0f0f0' },
		dark  => { colorAccent => '#ffececec', colorPrimary => '#ff212121', colorPrimaryDark => '#ff090909', _bg => '#ff2a2a2a' },
	},
	{
		_name => 'orange',
		light => { colorAccent => '#FFF57F17', colorPrimary => '#FFE65100', colorPrimaryDark => '#FFBF360C', _bg => '#fff0f0f0' },
		dark  => { colorAccent => '#FFF57F17', colorPrimary => '#FFE65100', colorPrimaryDark => '#FFBF360C', _bg => '#ff2a2a2a' },
	},
];

my $BUFF_TENTRIES = '';
my $BUFF_TVALS    = '';
my $BUFF_TSTYLES  = '';

my $THEME_ID = 0;
foreach my $theme_ref (@$THEMES) {
	my $theme_name = $theme_ref->{_name};
	my $theme_id = ($theme_name eq 'standard' ? '' : ucfirst($theme_name)."."); # standard has no prefix
	my $outfile  = THEMES_OUTDIR."/theme-$theme_name.xml";
	my $outbuff  = get_theme_xml($theme_ref, $theme_id);

	open(OUT, ">", $outfile) or die "Can not write to $outfile: $!\n";
	print OUT $outbuff;
	close(OUT);

	# use this loop to also populate the theme list output
	# assumes that get_theme_xml created two themes per definition (light and dark)
	foreach my $variant ('', 'Dark.') {
		my $tvvar = ($variant eq '' ? 'light' : 'dark');
		my $tvarr = join(",", map { $theme_ref->{$tvvar}->{$_} } qw(colorPrimaryDark _bg colorPrimary));
		$BUFF_TENTRIES  .= "\t\t<item>$variant".ucfirst($theme_name)."</item>\n";
		$BUFF_TVALS     .= "\t\t<item>".($THEME_ID).",$tvarr</item>\n";
		$BUFF_TSTYLES   .= "\t\t<item>\@style/${theme_id}${variant}VanillaBase</item>\n";
		$THEME_ID++;
	}
}


open(OUT, ">", THEMES_LIST) or die "Cannot write theme list: $!\n";
print OUT << "EOLIST";
<?xml version="1.0" encoding="utf-8"?>
<!-- THIS FILE IS AUTOGENERATED BY generate-themes.pl - DO NOT TOUCH! -->
<resources>
	<!-- human visible names of the themes -->
	<string-array name="theme_entries">
$BUFF_TENTRIES	</string-array>

	<!-- the value stored in the shared preferences for each theme -->
	<string-array name="theme_values">
$BUFF_TVALS	</string-array>

	<!-- the style id for each theme -->
	<integer-array name="theme_styles">
$BUFF_TSTYLES	</integer-array>
</resources>
EOLIST
close(OUT);






sub get_theme_xml {
	my($this, $tid) = @_;

my $DATA = << "EOF";
<?xml version="1.0" encoding="utf-8"?>
<!--

 *** THIS FILE WAS GENERATED BY 'generate-themes.pl' - DO NOT TOUCH ***

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program 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 General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see <http://www.gnu.org/licenses/>. 
-->

<resources>
	<style name="${tid}VanillaBase" parent="android:Theme.Material.Light.DarkActionBar">
		<item name="overlay_background_color">\@color/overlay_background_light</item>
		<item name="overlay_foreground_color">\@color/overlay_foreground_light</item>
		<item name="float_color">\@color/material_grey_400</item>
		<item name="tabs_background">$this->{light}->{colorPrimary}</item>
		<item name="now_playing_marker">$this->{light}->{colorAccent}</item>
		<item name="controls_normal">\@color/material_grey_600</item>
		<item name="controls_active">$this->{light}->{colorAccent}</item>
		<item name="android:colorAccent">$this->{light}->{colorAccent}</item>
		<item name="android:colorPrimary">$this->{light}->{colorPrimary}</item>
		<item name="android:colorPrimaryDark">$this->{light}->{colorPrimaryDark}</item>
	</style>

	<style name="${tid}Playback" parent="${tid}VanillaBase">
		<item name="android:actionBarStyle">\@style/Universal.PlaybackActionBar</item>
	</style>

	<style name="${tid}BackActionBar" parent="${tid}VanillaBase">
		<item name="android:actionBarStyle">\@style/Universal.PlaybackActionBar</item>
	</style>

	<style name="${tid}Library" parent="${tid}VanillaBase">
		<item name="android:windowActionBar">false</item>
		<item name="android:windowNoTitle">true</item>
	</style>

	<style name="${tid}PopupDialog" parent="android:Theme.Material.Light.Dialog.MinWidth">
		<item name="controls_normal">\@color/material_grey_600</item>
		<item name="controls_active">$this->{light}->{colorAccent}</item>
	</style>

	<!-- dark theme -->
	<style name="${tid}Dark.VanillaBase" parent="android:Theme.Material">
		<item name="overlay_background_color">\@color/overlay_background_dark</item>
		<item name="overlay_foreground_color">\@color/overlay_foreground_dark</item>
		<item name="float_color">\@color/material_grey_900</item>
		<item name="tabs_background">$this->{dark}->{colorPrimary}</item>
		<item name="now_playing_marker">$this->{dark}->{colorAccent}</item>
		<item name="controls_normal">\@color/material_grey_600</item>
		<item name="controls_active">$this->{dark}->{colorAccent}</item>
		<item name="android:colorAccent">$this->{dark}->{colorAccent}</item>
		<item name="android:colorPrimary">$this->{dark}->{colorPrimary}</item>
		<item name="android:colorPrimaryDark">$this->{dark}->{colorPrimaryDark}</item>
	</style>

	<style name="${tid}Dark.Playback" parent="${tid}Dark.VanillaBase">
		<item name="android:actionBarStyle">\@style/Universal.PlaybackActionBar</item>
	</style>

	<style name="${tid}Dark.BackActionBar" parent="${tid}Dark.VanillaBase">
		<item name="android:actionBarStyle">\@style/Universal.PlaybackActionBar</item>
	</style>

	<style name="${tid}Dark.Library" parent="${tid}Dark.VanillaBase">
		<item name="android:windowActionBar">false</item>
		<item name="android:windowNoTitle">true</item>
	</style>

	<style name="${tid}Dark.PopupDialog" parent="android:Theme.Material.Dialog.MinWidth">
		<item name="controls_normal">\@color/material_grey_600</item>
		<item name="controls_active">$this->{dark}->{colorAccent}</item>
	</style>

</resources>
EOF
	return $DATA
}