<?php
/**
 * Facebook-Post mit Tagesbild generieren.
 *
 * Aufruf: php facebook-post.php [YYYY-MM-DD] [--publish]
 *
 * @package dgt-verkehrsmonitor
 */

if ( PHP_SAPI !== 'cli' ) {
	exit( 'Nur per CLI.' );
}

require_once dirname( __DIR__, 4 ) . '/wp-load.php';

global $wpdb;

$date = isset( $argv[1] ) ? $argv[1] : gmdate( 'Y-m-d', strtotime( '-1 day' ) );

$t_inc = dgt_vm_table( 'incidents' );
$t_ds  = dgt_vm_table( 'daily_stats' );
$t_ss  = dgt_vm_table( 'substance_stats' );

$stats = $wpdb->get_row( $wpdb->prepare(
	"SELECT * FROM {$t_ds} WHERE stat_date = %s AND bundesland = '_all'",
	$date
) );

if ( ! $stats || ! $stats->total ) {
	fwrite( STDERR, "Keine Daten für {$date}.\n" );
	exit( 1 );
}

$subs = $wpdb->get_results( $wpdb->prepare(
	"SELECT substanz, anzahl FROM {$t_ss} WHERE stat_date = %s AND bundesland = '_all' ORDER BY anzahl DESC",
	$date
) );

$bl_ranking = $wpdb->get_results( $wpdb->prepare(
	"SELECT bundesland, total FROM {$t_ds} WHERE stat_date = %s AND bundesland != '_all' ORDER BY total DESC LIMIT 5",
	$date
) );

$top_bak = $wpdb->get_row( $wpdb->prepare(
	"SELECT ai_headline, bak_wert, stadt FROM {$t_inc} WHERE source_date = %s AND status = 'publiziert' AND bak_wert IS NOT NULL ORDER BY bak_wert DESC LIMIT 1",
	$date
) );

$date_de = strftime_de( $date );

/* ─── Bild generieren ─────────────────────────────────── */

$w = 1200;
$h = 800;
$img = imagecreatetruecolor( $w, $h );
imagealphablending( $img, true );
imagesavealpha( $img, true );

// ─── Farben (invertiert: dunkler Hintergrund) ──────
$c_bg      = imagecolorallocate( $img, 11, 22, 40 );
$c_white   = imagecolorallocate( $img, 255, 255, 255 );
$c_dark    = imagecolorallocate( $img, 255, 255, 255 );
$c_teal    = imagecolorallocate( $img, 42, 157, 143 );
$c_teal_dk = imagecolorallocate( $img, 28, 110, 100 );
$c_red     = imagecolorallocate( $img, 239, 68, 68 );
$c_green   = imagecolorallocate( $img, 52, 180, 120 );
$c_amber   = imagecolorallocate( $img, 245, 178, 30 );
$c_blue    = imagecolorallocate( $img, 80, 155, 230 );
$c_muted   = imagecolorallocate( $img, 148, 163, 184 );
$c_card_sh = imagecolorallocatealpha( $img, 0, 0, 0, 60 );
$c_card_bg = imagecolorallocatealpha( $img, 30, 41, 59, 0 );
$c_glass   = imagecolorallocatealpha( $img, 40, 55, 80, 50 );
$c_bar     = imagecolorallocate( $img, 30, 41, 59 );

// ─── Fonts ──────
$f_black = '/usr/share/fonts/truetype/lato/Lato-Black.ttf';
$f_bold  = '/usr/share/fonts/truetype/lato/Lato-Bold.ttf';
$f_semi  = '/usr/share/fonts/truetype/lato/Lato-Semibold.ttf';
$f_med   = '/usr/share/fonts/truetype/lato/Lato-Medium.ttf';
$f_reg   = '/usr/share/fonts/truetype/lato/Lato-Regular.ttf';
$f_it    = '/usr/share/fonts/truetype/lato/Lato-Italic.ttf';

// ─── Hintergrund ──────
imagefill( $img, 0, 0, $c_bg );

// ─── Polizeibild (oben rechts) ──────
$hero_path = dirname( __DIR__, 4 ) . '/wp-content/uploads/2026/06/verkehrsmonitor-deutschland.webp';
if ( function_exists( 'imagecreatefromwebp' ) && file_exists( $hero_path ) ) {
	$hero = @imagecreatefromwebp( $hero_path );
	if ( $hero ) {
		$hw = imagesx( $hero );
		$hh = imagesy( $hero );
		$tw = 520;
		$th = (int) ( $hh * $tw / $hw );
		if ( $th > 300 ) {
			$th = 300;
			$tw = (int) ( $hw * $th / $hh );
		}
		imagecopyresampled( $img, $hero, $w - $tw, 0, 0, 0, $tw, $th, $hw, $hh );
		imagedestroy( $hero );
		for ( $i = 0; $i < 250; $i++ ) {
			$x   = $w - $tw + $i;
			$alp = (int) ( 127 * $i / 250 );
			$fc  = imagecolorallocatealpha( $img, 11, 22, 40, $alp );
			imageline( $img, $x, 0, $x, $th, $fc );
		}
	}
}

// ─── Deko-Blasen ──────
$bc1 = imagecolorallocatealpha( $img, 42, 157, 143, 70 );
$bc2 = imagecolorallocatealpha( $img, 42, 157, 143, 85 );
imagefilledellipse( $img, 628, 20, 16, 16, $bc1 );
imagefilledellipse( $img, 648, 38, 10, 10, $bc2 );
imagefilledellipse( $img, 640, 10, 7, 7, $bc2 );
imagefilledellipse( $img, 660, 26, 12, 12, $bc1 );
imagefilledellipse( $img, 622, 42, 6, 6, $bc2 );
imagefilledellipse( $img, 652, 52, 5, 5, $bc2 );

// ─── Header ──────
imagettftext( $img, 18, 0, 40, 40, $c_teal, $f_black, 'VERKEHRSMONITOR DEUTSCHLAND' );
imagettftext( $img, 14, 0, 40, 65, $c_muted, $f_reg, $date_de );

// ─── Hauptzahl mit Icon ──────
$mcx = 95;
$mcy = 148;
imagefilledellipse( $img, $mcx, $mcy, 82, 82, $c_teal );
// Flasche.
imagefilledrectangle( $img, $mcx - 4, $mcy - 22, $mcx + 0, $mcy - 12, $c_white );
imagefilledrectangle( $img, $mcx - 9, $mcy - 12, $mcx + 5, $mcy + 14, $c_white );
imagefilledellipse( $img, $mcx - 2, $mcy + 14, 14, 5, $c_white );
// Glas.
imagefilledrectangle( $img, $mcx + 10, $mcy - 6, $mcx + 22, $mcy + 14, $c_white );
imagefilledrectangle( $img, $mcx + 8, $mcy - 8, $mcx + 24, $mcy - 5, $c_white );

$num_str = (string) $stats->total;
imagettftext( $img, 72, 0, 150, 180, $c_dark, $f_black, $num_str );
$nb = imagettfbbox( 72, 0, $f_black, $num_str );
$nr = 160 + $nb[2];

imagettftext( $img, 28, 0, $nr, 135, $c_dark, $f_black, 'Alkohol- &' );
imagettftext( $img, 28, 0, $nr, 168, $c_dark, $f_black, 'Drogenfahrten' );
imagettftext( $img, 17, 0, $nr, 195, $c_teal, $f_semi, 'gestern in Deutschland' );

// ─── 4 Stat-Karten ──────
$cy = 220;
$ch = 115;
$cw = 265;
$cg = 18;

$stat_cards = array(
	array( 'ic' => $c_red,   'n' => $stats->alkohol,     'l' => 'Alkohol',       's' => 'Fahrten unter Alkoholeinfluss', 't' => 'bottle' ),
	array( 'ic' => $c_green, 'n' => $stats->drogen,      'l' => 'Drogen',        's' => 'Fahrten unter Drogeneinfluss', 't' => 'leaf' ),
	array( 'ic' => $c_amber, 'n' => $stats->unfaelle,    'l' => 'Unfälle',       's' => 'mit Alkohol oder Drogen', 't' => 'car' ),
	array( 'ic' => $c_blue,  'n' => $stats->fs_entzogen, 'l' => 'Führerscheine', 's' => 'wurden entzogen', 't' => 'card' ),
);

foreach ( $stat_cards as $i => $sc ) {
	$cx = 30 + $i * ( $cw + $cg );
	// Schatten.
	imagefilledroundedrect( $img, $cx + 3, $cy + 3, $cx + $cw + 3, $cy + $ch + 3, 14, $c_card_sh );
	// Karte (Glas-Effekt).
	imagefilledroundedrect( $img, $cx, $cy, $cx + $cw, $cy + $ch, 14, $c_card_bg );
	// Glas-Highlight oben.
	imagefilledroundedrect( $img, $cx, $cy, $cx + $cw, $cy + 40, 14, $c_glass );

	// Icon-Kreis.
	$icx = $cx + 38;
	$icy = $cy + 48;
	imagefilledellipse( $img, $icx, $icy, 48, 48, $sc['ic'] );
	draw_card_icon( $img, $icx, $icy, $sc['t'], $c_white );

	// Zahl.
	imagettftext( $img, 38, 0, $cx + 72, $cy + 58, $c_dark, $f_black, (string) $sc['n'] );
	// Label.
	imagettftext( $img, 14, 0, $cx + 72, $cy + 78, $sc['ic'], $f_bold, $sc['l'] );
	// Sub.
	imagettftext( $img, 10, 0, $cx + 15, $cy + 102, $c_muted, $f_reg, $sc['s'] );
}

// ─── Promille-Balken ──────
$py  = 355;
$ph  = 46;
$bw  = 555;

if ( $stats->max_bak ) {
	// Balken 1: Höchster Promillewert.
	imagefilledroundedrect( $img, 30, $py, 30 + $bw, $py + $ph, 10, $c_bar );
	draw_trend_arrow( $img, 50, $py + 23, $c_teal );
	imagettftext( $img, 12, 0, 75, $py + 29, $c_muted, $f_reg, 'Höchster Promillewert' );
	$bak_s = number_format( (float) $stats->max_bak, 2, ',', '.' ) . ' ‰';
	$bb    = imagettfbbox( 24, 0, $f_black, $bak_s );
	imagettftext( $img, 24, 0, 30 + $bw - 22 - $bb[2], $py + 33, $c_teal, $f_black, $bak_s );

	// Balken 2: Durchschnitt.
	if ( $stats->avg_bak ) {
		$bx2 = 30 + $bw + 25;
		imagefilledroundedrect( $img, $bx2, $py, $bx2 + $bw, $py + $ph, 10, $c_bar );
		draw_trend_arrow( $img, $bx2 + 20, $py + 23, $c_teal );
		imagettftext( $img, 12, 0, $bx2 + 45, $py + 29, $c_muted, $f_reg, 'Durchschnittlicher Promillewert' );
		$avg_s = number_format( (float) $stats->avg_bak, 2, ',', '.' ) . ' ‰';
		$ab    = imagettfbbox( 24, 0, $f_black, $avg_s );
		imagettftext( $img, 24, 0, $bx2 + $bw - 22 - $ab[2], $py + 33, $c_teal, $f_black, $avg_s );
	}
}

// ─── Top Bundesländer ──────
$bly = 460;
imagettftext( $img, 16, 0, 40, $bly, $c_teal, $f_black, 'TOP BUNDESLÄNDER' );

$bl_names = array(
	'nordrhein-westfalen'    => 'NRW',
	'baden-wuerttemberg'     => 'Baden-Württemberg',
	'bayern'                 => 'Bayern',
	'niedersachsen'          => 'Niedersachsen',
	'hessen'                 => 'Hessen',
	'rheinland-pfalz'        => 'Rheinland-Pfalz',
	'hamburg'                => 'Hamburg',
	'berlin'                 => 'Berlin',
	'sachsen'                => 'Sachsen',
	'thueringen'             => 'Thüringen',
	'schleswig-holstein'     => 'Schleswig-Holstein',
	'brandenburg'            => 'Brandenburg',
	'sachsen-anhalt'         => 'Sachsen-Anhalt',
	'mecklenburg-vorpommern' => 'Meckl.-Vorpommern',
	'saarland'               => 'Saarland',
	'bremen'                 => 'Bremen',
);

$max_bl = $bl_ranking ? (int) $bl_ranking[0]->total : 1;
$bly   += 35;

foreach ( $bl_ranking as $i => $bl ) {
	$name  = isset( $bl_names[ $bl->bundesland ] ) ? $bl_names[ $bl->bundesland ] : $bl->bundesland;
	$bar_w = max( 12, (int) ( ( $bl->total / $max_bl ) * 280 ) );
	imagettftext( $img, 13, 0, 40, $bly + 5, $c_dark, $f_bold, ( $i + 1 ) . '.' );
	imagettftext( $img, 13, 0, 68, $bly + 5, $c_dark, $f_reg, $name );
	imagefilledroundedrect( $img, 245, $bly - 10, 245 + $bar_w, $bly + 10, 5, $c_teal );
	imagettftext( $img, 13, 0, 255 + $bar_w, $bly + 5, $c_dark, $f_bold, (string) $bl->total );
	$bly += 34;
}

// ─── QR-Code ──────
$qx = 940;
$qy = 475;
$qs = 170;

$qr_cache = dirname( __DIR__ ) . '/assets/qr-verkehrsmonitor.png';
if ( ! file_exists( $qr_cache ) ) {
	$qr_api  = 'https://api.qrserver.com/v1/create-qr-code/?size=300x300&format=png&data=';
	$qr_data = @file_get_contents( $qr_api . urlencode( 'https://www.drogentest-online.de/verkehrsmonitor/' ) );
	if ( $qr_data ) {
		$assets_dir = dirname( __DIR__ ) . '/assets';
		if ( ! is_dir( $assets_dir ) ) {
			mkdir( $assets_dir, 0755, true );
		}
		file_put_contents( $qr_cache, $qr_data );
	}
}

if ( file_exists( $qr_cache ) ) {
	$qr_img = @imagecreatefrompng( $qr_cache );
	if ( $qr_img ) {
		imagefilledroundedrect( $img, $qx - 10, $qy - 10, $qx + $qs + 10, $qy + $qs + 10, 10, $c_white );
		imagecopyresampled( $img, $qr_img, $qx, $qy, 0, 0, $qs, $qs, imagesx( $qr_img ), imagesy( $qr_img ) );
		imagedestroy( $qr_img );
	}
}

imagettftext( $img, 20, 0, $qx + 10, $qy - 30, $c_dark, $f_it, 'Mehr Infos' );

// ─── Footer ──────
$fy = $h - 65;
$fh = 50;
imagefilledroundedrect( $img, 15, $fy, $w - 15, $fy + $fh, 12, $c_teal );

// Icon links.
imagefilledellipse( $img, 52, $fy + 25, 28, 28, $c_teal_dk );
imagefilledrectangle( $img, 46, $fy + 17, 58, $fy + 33, $c_white );
imageline( $img, 46, $fy + 22, 58, $fy + 22, $c_teal_dk );
imageline( $img, 46, $fy + 27, 58, $fy + 27, $c_teal_dk );

imagettftext( $img, 12, 0, 75, $fy + 30, $c_white, $f_reg, 'Mehr Statistiken, Ratgeber & Hilfe' );

// URL (dunkler Pill).
$url_text = 'drogentest-online.de/verkehrsmonitor';
$url_bb   = imagettfbbox( 13, 0, $f_bold, $url_text );
$url_w    = $url_bb[2] - $url_bb[0] + 36;
$url_x    = (int) ( ( $w - $url_w ) / 2 );
imagefilledroundedrect( $img, $url_x, $fy + 6, $url_x + $url_w, $fy + $fh - 6, 8, $c_teal_dk );
imagettftext( $img, 13, 0, $url_x + 18, $fy + 32, $c_white, $f_bold, $url_text );

imagettftext( $img, 11, 0, $w - 285, $fy + 30, $c_white, $f_reg, 'Quelle: Polizeiberichte - KI Analyse' );

// ─── Speichern ──────
$out_dir = dirname( __DIR__ ) . '/assets';
if ( ! is_dir( $out_dir ) ) {
	mkdir( $out_dir, 0755, true );
}
$out_path = $out_dir . '/fb-post-' . $date . '.png';
imagepng( $img, $out_path, 5 );
imagedestroy( $img );

echo "Bild: {$out_path}\n\n";

/* ─── Post-Text ───────────────────────────────────────── */

$emoji_warn = "\xE2\x9A\xA0\xEF\xB8\x8F";
$emoji_bar  = "\xF0\x9F\x93\x8A";
$emoji_car  = "\xF0\x9F\x9A\x97";
$emoji_link = "\xF0\x9F\x94\x97";
$emoji_beer = "\xF0\x9F\x8D\xBA";
$emoji_pill = "\xF0\x9F\x92\x8A";

$text  = "{$emoji_warn} {$stats->total} Alkohol- und Drogenfahrten in Deutschland – {$date_de}\n\n";
$text .= "{$emoji_bar} Die Zahlen des Tages:\n";
$text .= "{$emoji_beer} {$stats->alkohol} Alkoholfahrten\n";
$text .= "{$emoji_pill} {$stats->drogen} Drogenfahrten\n";
$text .= "{$emoji_car} {$stats->unfaelle} Unfälle\n";
$text .= "🪪 {$stats->fs_entzogen} Führerscheine entzogen\n\n";

if ( $stats->max_bak ) {
	$text .= "Höchster Promillewert: " . number_format( (float) $stats->max_bak, 2, ',', '.' ) . " ‰";
	if ( $top_bak && $top_bak->stadt ) {
		$text .= " ({$top_bak->stadt})";
	}
	$text .= "\n";
}
if ( $stats->avg_bak ) {
	$text .= "Durchschnitt: " . number_format( (float) $stats->avg_bak, 2, ',', '.' ) . " ‰\n";
}

$text .= "\n";

if ( $stats->ai_fazit ) {
	$fazit = $stats->ai_fazit;
	if ( preg_match( '/\*\*.*?\*\*\s*\n+(.*)/s', $fazit, $fm ) ) {
		$fazit = trim( $fm[1] );
	}
	$fazit = preg_replace( '/\*\*/', '', $fazit );
	if ( mb_strlen( $fazit ) > 500 ) {
		$fazit = mb_substr( $fazit, 0, 500 );
		$last_dot = mb_strrpos( $fazit, '.' );
		if ( $last_dot !== false && $last_dot > 200 ) {
			$fazit = mb_substr( $fazit, 0, $last_dot + 1 );
		} else {
			$last_space = mb_strrpos( $fazit, ' ' );
			$fazit = mb_substr( $fazit, 0, $last_space ) . ' …';
		}
	}
	$text .= $fazit . "\n\n";
}

$text .= "{$emoji_link} Alle Details & interaktive Karte:\nhttps://www.drogentest-online.de/verkehrsmonitor/\n\n";
$text .= "#Verkehrssicherheit #Alkoholfahrt #Drogenfahrt #Drogentest #Promille #Verkehrsmonitor";

echo "─── FACEBOOK-POST ─────────────────────────────────\n\n";
echo $text;
echo "\n\n────────────────────────────────────────────────────\n";

/* ─── Facebook veröffentlichen ───────────────────────── */

$publish = in_array( '--publish', $argv, true );

if ( $publish ) {
	$config_file = dirname( __DIR__ ) . '/.fb-config';
	if ( ! file_exists( $config_file ) ) {
		fwrite( STDERR, "Fehler: {$config_file} nicht gefunden.\n" );
		exit( 1 );
	}

	$config = array();
	foreach ( file( $config_file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES ) as $line ) {
		if ( strpos( $line, '=' ) !== false ) {
			list( $k, $v ) = explode( '=', $line, 2 );
			$config[ trim( $k ) ] = trim( $v );
		}
	}

	$page_id = $config['PAGE_ID'] ?? '';
	$token   = $config['ACCESS_TOKEN'] ?? '';

	if ( ! $page_id || ! $token ) {
		fwrite( STDERR, "Fehler: PAGE_ID oder ACCESS_TOKEN fehlt in .fb-config.\n" );
		exit( 1 );
	}

	$url = "https://graph.facebook.com/v21.0/{$page_id}/photos";

	$ch = curl_init();
	curl_setopt_array( $ch, array(
		CURLOPT_URL            => $url,
		CURLOPT_POST           => true,
		CURLOPT_RETURNTRANSFER => true,
		CURLOPT_POSTFIELDS     => array(
			'source'       => new CURLFile( $out_path, 'image/png' ),
			'message'      => $text,
			'access_token' => $token,
		),
	) );

	$response = curl_exec( $ch );
	$http     = curl_getinfo( $ch, CURLINFO_HTTP_CODE );
	curl_close( $ch );

	$result = json_decode( $response, true );

	if ( $http === 200 && isset( $result['id'] ) ) {
		echo "\n✓ Facebook-Post veröffentlicht! ID: {$result['id']}\n";
	} else {
		$err = $result['error']['message'] ?? $response;
		fwrite( STDERR, "\nFehler beim Posten (HTTP {$http}): {$err}\n" );
		exit( 1 );
	}
} else {
	echo "\nHinweis: Mit --publish wird der Post automatisch auf Facebook veröffentlicht.\n";
}

/* ─── Hilfsfunktionen ─────────────────────────────────── */

function strftime_de( $date ) {
	$ts   = strtotime( $date );
	$days = array( 'Sonntag', 'Montag', 'Dienstag', 'Mittwoch', 'Donnerstag', 'Freitag', 'Samstag' );
	$day  = $days[ (int) date( 'w', $ts ) ];
	return $day . ', ' . date( 'd.m.Y', $ts );
}

function imagefilledroundedrect( $img, $x1, $y1, $x2, $y2, $r, $color ) {
	imagefilledrectangle( $img, $x1 + $r, $y1, $x2 - $r, $y2, $color );
	imagefilledrectangle( $img, $x1, $y1 + $r, $x2, $y2 - $r, $color );
	imagefilledellipse( $img, $x1 + $r, $y1 + $r, $r * 2, $r * 2, $color );
	imagefilledellipse( $img, $x2 - $r, $y1 + $r, $r * 2, $r * 2, $color );
	imagefilledellipse( $img, $x1 + $r, $y2 - $r, $r * 2, $r * 2, $color );
	imagefilledellipse( $img, $x2 - $r, $y2 - $r, $r * 2, $r * 2, $color );
}

function draw_trend_arrow( $img, $x, $y, $color ) {
	imagesetthickness( $img, 2 );
	imageline( $img, $x, $y + 6, $x + 14, $y - 6, $color );
	imageline( $img, $x + 8, $y - 6, $x + 14, $y - 6, $color );
	imageline( $img, $x + 14, $y - 6, $x + 14, $y + 1, $color );
	imagesetthickness( $img, 1 );
}

function draw_card_icon( $img, $cx, $cy, $type, $fg ) {
	switch ( $type ) {
		case 'bottle':
			imagefilledrectangle( $img, $cx - 3, $cy - 14, $cx + 1, $cy - 7, $fg );
			imagefilledrectangle( $img, $cx - 7, $cy - 7, $cx + 5, $cy + 12, $fg );
			imagefilledellipse( $img, $cx - 1, $cy + 12, 12, 4, $fg );
			break;
		case 'leaf':
			imagefilledellipse( $img, $cx, $cy - 3, 18, 22, $fg );
			$bg = imagecolorallocatealpha( $img, 42, 157, 100, 0 );
			imageline( $img, $cx, $cy - 14, $cx, $cy + 10, $bg );
			imageline( $img, $cx - 7, $cy - 5, $cx + 7, $cy + 3, $bg );
			imageline( $img, $cx + 7, $cy - 5, $cx - 7, $cy + 3, $bg );
			break;
		case 'car':
			imagefilledrectangle( $img, $cx - 12, $cy - 4, $cx + 12, $cy + 5, $fg );
			imagefilledrectangle( $img, $cx - 8, $cy - 10, $cx + 8, $cy - 4, $fg );
			imagefilledellipse( $img, $cx - 7, $cy + 7, 7, 7, $fg );
			imagefilledellipse( $img, $cx + 7, $cy + 7, 7, 7, $fg );
			break;
		case 'card':
			imagefilledrectangle( $img, $cx - 11, $cy - 8, $cx + 11, $cy + 8, $fg );
			$bg = imagecolorallocatealpha( $img, 58, 130, 200, 0 );
			imagefilledellipse( $img, $cx - 4, $cy - 2, 7, 7, $bg );
			imagefilledrectangle( $img, $cx + 2, $cy - 4, $cx + 9, $cy - 2, $bg );
			imagefilledrectangle( $img, $cx + 2, $cy, $cx + 9, $cy + 2, $bg );
			imagefilledrectangle( $img, $cx + 2, $cy + 4, $cx + 9, $cy + 6, $bg );
			break;
	}
}